/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:27:36,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:27:36,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:27:36,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:27:36,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:27:36,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:27:36,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:27:36,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:27:36,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:27:36,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:27:36,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:27:36,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:27:36,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:27:36,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:27:36,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:27:36,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:27:36,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:27:36,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:27:36,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:27:36,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:27:36,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:27:36,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:27:36,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:27:36,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:27:36,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:27:36,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:27:36,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:27:36,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:27:36,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:27:36,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:27:36,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:27:36,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:27:36,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:27:36,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:27:36,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:27:36,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:27:36,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:27:36,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:27:36,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:27:36,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:27:36,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:27:36,500 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:27:36,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:27:36,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:27:36,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:27:36,515 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:27:36,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:27:36,516 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:27:36,516 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:27:36,516 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:27:36,516 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:27:36,516 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:27:36,516 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:27:36,517 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:27:36,517 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:27:36,517 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:27:36,517 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:27:36,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:27:36,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:27:36,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:27:36,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:27:36,518 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:27:36,518 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:27:36,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:27:36,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:27:36,519 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:27:36,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:27:36,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:27:36,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:27:36,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:27:36,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:27:36,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:27:36,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:27:36,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:27:36,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:27:36,704 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:27:36,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:27:36,773 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_pcbJNY/tmp/f7ba8391236a408b9fecbb90f2f790dd/FLAG9407fa4d2 [2020-07-01 12:27:37,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:27:37,112 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:27:37,113 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-07-01 12:27:37,119 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_pcbJNY/tmp/f7ba8391236a408b9fecbb90f2f790dd/FLAG9407fa4d2 [2020-07-01 12:27:37,510 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_pcbJNY/tmp/f7ba8391236a408b9fecbb90f2f790dd [2020-07-01 12:27:37,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:27:37,523 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:27:37,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:27:37,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:27:37,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:27:37,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a067a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37, skipping insertion in model container [2020-07-01 12:27:37,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:27:37,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:27:37,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:27:37,807 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:27:37,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:27:37,841 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:27:37,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37 WrapperNode [2020-07-01 12:27:37,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:27:37,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:27:37,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:27:37,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:27:37,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:27:37,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:27:37,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:27:37,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:27:37,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... [2020-07-01 12:27:37,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:27:37,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:27:37,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:27:37,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:27:37,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:27:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 12:27:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-01 12:27:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:27:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:27:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 12:27:38,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:27:38,293 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-01 12:27:38,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:27:38 BoogieIcfgContainer [2020-07-01 12:27:38,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:27:38,298 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:27:38,298 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:27:38,302 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:27:38,303 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:27:38" (1/1) ... [2020-07-01 12:27:38,319 INFO L313 BlockEncoder]: Initial Icfg 48 locations, 55 edges [2020-07-01 12:27:38,320 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:27:38,321 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:27:38,322 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:27:38,322 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:27:38,324 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:27:38,325 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:27:38,325 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:27:38,353 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:27:38,386 INFO L200 BlockEncoder]: SBE split 22 edges [2020-07-01 12:27:38,390 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 12:27:38,392 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:27:38,443 INFO L100 BaseMinimizeStates]: Removed 22 edges and 11 locations by large block encoding [2020-07-01 12:27:38,446 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:27:38,448 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:27:38,448 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:27:38,448 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:27:38,449 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:27:38,449 INFO L313 BlockEncoder]: Encoded RCFG 36 locations, 73 edges [2020-07-01 12:27:38,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:27:38 BasicIcfg [2020-07-01 12:27:38,450 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:27:38,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:27:38,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:27:38,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:27:38,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:27:37" (1/4) ... [2020-07-01 12:27:38,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300070e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:27:38, skipping insertion in model container [2020-07-01 12:27:38,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:27:37" (2/4) ... [2020-07-01 12:27:38,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300070e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:27:38, skipping insertion in model container [2020-07-01 12:27:38,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:27:38" (3/4) ... [2020-07-01 12:27:38,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300070e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:27:38, skipping insertion in model container [2020-07-01 12:27:38,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:27:38" (4/4) ... [2020-07-01 12:27:38,459 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:27:38,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:27:38,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-07-01 12:27:38,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-07-01 12:27:38,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:27:38,515 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:27:38,515 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:27:38,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:27:38,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:27:38,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:27:38,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:27:38,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:27:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-01 12:27:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 12:27:38,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:38,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 12:27:38,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:38,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:38,544 INFO L82 PathProgramCache]: Analyzing trace with hash 7804023, now seen corresponding path program 1 times [2020-07-01 12:27:38,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:38,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494194071] [2020-07-01 12:27:38,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:38,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494194071] [2020-07-01 12:27:38,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:38,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:27:38,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751287412] [2020-07-01 12:27:38,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:27:38,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:38,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:27:38,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:27:38,746 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-01 12:27:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:38,917 INFO L93 Difference]: Finished difference Result 63 states and 127 transitions. [2020-07-01 12:27:38,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:27:38,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 12:27:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:38,932 INFO L225 Difference]: With dead ends: 63 [2020-07-01 12:27:38,933 INFO L226 Difference]: Without dead ends: 36 [2020-07-01 12:27:38,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:27:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-01 12:27:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-01 12:27:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-01 12:27:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2020-07-01 12:27:38,976 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 4 [2020-07-01 12:27:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:38,977 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2020-07-01 12:27:38,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:27:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2020-07-01 12:27:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 12:27:38,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:38,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 12:27:38,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 12:27:38,979 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:38,980 INFO L82 PathProgramCache]: Analyzing trace with hash 7804024, now seen corresponding path program 1 times [2020-07-01 12:27:38,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:38,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678046159] [2020-07-01 12:27:38,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678046159] [2020-07-01 12:27:39,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:39,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:27:39,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658533489] [2020-07-01 12:27:39,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 12:27:39,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:39,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:27:39,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:27:39,013 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 4 states. [2020-07-01 12:27:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:39,125 INFO L93 Difference]: Finished difference Result 36 states and 69 transitions. [2020-07-01 12:27:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:27:39,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-01 12:27:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:39,126 INFO L225 Difference]: With dead ends: 36 [2020-07-01 12:27:39,127 INFO L226 Difference]: Without dead ends: 34 [2020-07-01 12:27:39,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:27:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-01 12:27:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-07-01 12:27:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-01 12:27:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 67 transitions. [2020-07-01 12:27:39,134 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 67 transitions. Word has length 4 [2020-07-01 12:27:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:39,134 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 67 transitions. [2020-07-01 12:27:39,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 12:27:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 67 transitions. [2020-07-01 12:27:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 12:27:39,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:39,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 12:27:39,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 12:27:39,136 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 7804021, now seen corresponding path program 1 times [2020-07-01 12:27:39,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:39,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171841211] [2020-07-01 12:27:39,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:39,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171841211] [2020-07-01 12:27:39,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:39,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:27:39,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698590931] [2020-07-01 12:27:39,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:27:39,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:39,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:27:39,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:27:39,165 INFO L87 Difference]: Start difference. First operand 34 states and 67 transitions. Second operand 3 states. [2020-07-01 12:27:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:39,271 INFO L93 Difference]: Finished difference Result 34 states and 67 transitions. [2020-07-01 12:27:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:27:39,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 12:27:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:39,272 INFO L225 Difference]: With dead ends: 34 [2020-07-01 12:27:39,272 INFO L226 Difference]: Without dead ends: 32 [2020-07-01 12:27:39,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:27:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-01 12:27:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-01 12:27:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-01 12:27:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 63 transitions. [2020-07-01 12:27:39,321 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 63 transitions. Word has length 4 [2020-07-01 12:27:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:39,321 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 63 transitions. [2020-07-01 12:27:39,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:27:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 63 transitions. [2020-07-01 12:27:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-01 12:27:39,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:39,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:27:39,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 12:27:39,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash 276195753, now seen corresponding path program 1 times [2020-07-01 12:27:39,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:39,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338738335] [2020-07-01 12:27:39,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:39,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338738335] [2020-07-01 12:27:39,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:39,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-01 12:27:39,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134793411] [2020-07-01 12:27:39,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-01 12:27:39,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:39,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-01 12:27:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-01 12:27:39,417 INFO L87 Difference]: Start difference. First operand 32 states and 63 transitions. Second operand 6 states. [2020-07-01 12:27:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:39,910 INFO L93 Difference]: Finished difference Result 107 states and 227 transitions. [2020-07-01 12:27:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-01 12:27:39,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-07-01 12:27:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:39,913 INFO L225 Difference]: With dead ends: 107 [2020-07-01 12:27:39,913 INFO L226 Difference]: Without dead ends: 105 [2020-07-01 12:27:39,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-01 12:27:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-01 12:27:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 30. [2020-07-01 12:27:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-01 12:27:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 59 transitions. [2020-07-01 12:27:39,922 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 59 transitions. Word has length 8 [2020-07-01 12:27:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:39,922 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 59 transitions. [2020-07-01 12:27:39,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-01 12:27:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 59 transitions. [2020-07-01 12:27:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-01 12:27:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:39,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:27:39,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 12:27:39,924 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash 276195755, now seen corresponding path program 1 times [2020-07-01 12:27:39,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:39,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794822391] [2020-07-01 12:27:39,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:40,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794822391] [2020-07-01 12:27:40,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:40,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-01 12:27:40,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235586535] [2020-07-01 12:27:40,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-01 12:27:40,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:40,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-01 12:27:40,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-01 12:27:40,035 INFO L87 Difference]: Start difference. First operand 30 states and 59 transitions. Second operand 7 states. [2020-07-01 12:27:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:40,697 INFO L93 Difference]: Finished difference Result 149 states and 307 transitions. [2020-07-01 12:27:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-01 12:27:40,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-07-01 12:27:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:40,699 INFO L225 Difference]: With dead ends: 149 [2020-07-01 12:27:40,700 INFO L226 Difference]: Without dead ends: 147 [2020-07-01 12:27:40,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-01 12:27:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-07-01 12:27:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 37. [2020-07-01 12:27:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-01 12:27:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 70 transitions. [2020-07-01 12:27:40,711 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 70 transitions. Word has length 8 [2020-07-01 12:27:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:40,711 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 70 transitions. [2020-07-01 12:27:40,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-01 12:27:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 70 transitions. [2020-07-01 12:27:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-01 12:27:40,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:40,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:27:40,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-01 12:27:40,712 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 304824906, now seen corresponding path program 1 times [2020-07-01 12:27:40,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:40,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041026771] [2020-07-01 12:27:40,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:40,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041026771] [2020-07-01 12:27:40,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:40,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-01 12:27:40,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658268335] [2020-07-01 12:27:40,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-01 12:27:40,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-01 12:27:40,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-01 12:27:40,789 INFO L87 Difference]: Start difference. First operand 37 states and 70 transitions. Second operand 7 states. [2020-07-01 12:27:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:40,973 INFO L93 Difference]: Finished difference Result 60 states and 118 transitions. [2020-07-01 12:27:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-01 12:27:40,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-07-01 12:27:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:40,975 INFO L225 Difference]: With dead ends: 60 [2020-07-01 12:27:40,975 INFO L226 Difference]: Without dead ends: 58 [2020-07-01 12:27:40,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-01 12:27:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-01 12:27:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-07-01 12:27:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-01 12:27:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 64 transitions. [2020-07-01 12:27:40,982 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 64 transitions. Word has length 8 [2020-07-01 12:27:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:40,982 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 64 transitions. [2020-07-01 12:27:40,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-01 12:27:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 64 transitions. [2020-07-01 12:27:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-01 12:27:40,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:40,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:27:40,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-01 12:27:40,984 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1011313216, now seen corresponding path program 1 times [2020-07-01 12:27:40,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:40,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268848842] [2020-07-01 12:27:40,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:27:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:27:41,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268848842] [2020-07-01 12:27:41,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:27:41,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:27:41,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770242209] [2020-07-01 12:27:41,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-01 12:27:41,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:27:41,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 12:27:41,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-01 12:27:41,036 INFO L87 Difference]: Start difference. First operand 33 states and 64 transitions. Second operand 5 states. [2020-07-01 12:27:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:27:41,181 INFO L93 Difference]: Finished difference Result 38 states and 69 transitions. [2020-07-01 12:27:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 12:27:41,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-01 12:27:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:27:41,182 INFO L225 Difference]: With dead ends: 38 [2020-07-01 12:27:41,182 INFO L226 Difference]: Without dead ends: 37 [2020-07-01 12:27:41,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-01 12:27:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-01 12:27:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-01 12:27:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-01 12:27:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 68 transitions. [2020-07-01 12:27:41,189 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 68 transitions. Word has length 11 [2020-07-01 12:27:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:27:41,189 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 68 transitions. [2020-07-01 12:27:41,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-01 12:27:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 68 transitions. [2020-07-01 12:27:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-01 12:27:41,190 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:27:41,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:27:41,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-01 12:27:41,191 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-07-01 12:27:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:27:41,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1011313215, now seen corresponding path program 1 times [2020-07-01 12:27:41,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:27:41,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593060140] [2020-07-01 12:27:41,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:27:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:27:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:27:41,249 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:27:41,250 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-01 12:27:41,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-01 12:27:41,279 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 12:27:41,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:27:41 BasicIcfg [2020-07-01 12:27:41,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:27:41,282 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:27:41,282 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:27:41,285 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:27:41,285 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:27:41,285 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:27:41,286 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:27:41,286 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:27:41,286 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:27:41,286 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:27:41,288 INFO L168 Benchmark]: Toolchain (without parser) took 3765.08 ms. Allocated memory was 649.6 MB in the beginning and 738.2 MB in the end (delta: 88.6 MB). Free memory was 556.3 MB in the beginning and 537.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 107.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,289 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:27:41,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.87 ms. Allocated memory was 649.6 MB in the beginning and 668.5 MB in the end (delta: 18.9 MB). Free memory was 556.3 MB in the beginning and 630.4 MB in the end (delta: -74.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.30 ms. Allocated memory is still 668.5 MB. Free memory was 630.4 MB in the beginning and 627.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,291 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 668.5 MB. Free memory was 627.7 MB in the beginning and 626.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,291 INFO L168 Benchmark]: RCFGBuilder took 382.05 ms. Allocated memory is still 668.5 MB. Free memory was 626.4 MB in the beginning and 597.5 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,292 INFO L168 Benchmark]: BlockEncodingV2 took 152.51 ms. Allocated memory is still 668.5 MB. Free memory was 597.5 MB in the beginning and 585.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,293 INFO L168 Benchmark]: TraceAbstraction took 2829.94 ms. Allocated memory was 668.5 MB in the beginning and 738.2 MB in the end (delta: 69.7 MB). Free memory was 584.0 MB in the beginning and 537.5 MB in the end (delta: 46.5 MB). Peak memory consumption was 116.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:27:41,293 INFO L168 Benchmark]: BuchiAutomizer took 4.18 ms. Allocated memory is still 738.2 MB. Free memory is still 537.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:27:41,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 48 locations, 55 edges - StatisticsResult: Encoded RCFG 36 locations, 73 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 318.87 ms. Allocated memory was 649.6 MB in the beginning and 668.5 MB in the end (delta: 18.9 MB). Free memory was 556.3 MB in the beginning and 630.4 MB in the end (delta: -74.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 43.30 ms. Allocated memory is still 668.5 MB. Free memory was 630.4 MB in the beginning and 627.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 668.5 MB. Free memory was 627.7 MB in the beginning and 626.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 382.05 ms. Allocated memory is still 668.5 MB. Free memory was 626.4 MB in the beginning and 597.5 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 152.51 ms. Allocated memory is still 668.5 MB. Free memory was 597.5 MB in the beginning and 585.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. * TraceAbstraction took 2829.94 ms. Allocated memory was 668.5 MB in the beginning and 738.2 MB in the end (delta: 69.7 MB). Free memory was 584.0 MB in the beginning and 537.5 MB in the end (delta: 46.5 MB). Peak memory consumption was 116.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.18 ms. Allocated memory is still 738.2 MB. Free memory is still 537.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L12] int length = __VERIFIER_nondet_int(); [L13] COND FALSE !(length < 1) [L16] char* nondetString = (char*) malloc(length * sizeof(char)); [L17] nondetString[length-1] = '\0' [L18] return nondetString; [L12] int length = __VERIFIER_nondet_int(); [L13] COND TRUE length < 1 [L14] length = 1 [L16] char* nondetString = (char*) malloc(length * sizeof(char)); [L17] nondetString[length-1] = '\0' [L18] return nondetString; [L27] const char *sc1; [L28] const char *s; [L29] int c; [L30] sc1 = s1 [L30] EXPR \read(*sc1) [L30] COND FALSE !(*sc1 != '\0') [L38] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 1230 SDslu, 538 SDs, 0 SdLazy, 1208 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 212 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1845 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 12:27:34.267 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_pcbJNY/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:27:41.529 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check