/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:26:07,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:26:07,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:26:07,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:26:07,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:26:07,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:26:07,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:26:07,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:26:07,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:26:07,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:26:07,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:26:07,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:26:07,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:26:07,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:26:07,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:26:07,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:26:07,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:26:07,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:26:07,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:26:07,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:26:07,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:26:07,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:26:07,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:26:07,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:26:07,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:26:07,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:26:07,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:26:07,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:26:07,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:26:07,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:26:07,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:26:07,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:26:07,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:26:07,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:26:07,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:26:07,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:26:07,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:26:07,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:26:07,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:26:07,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:26:07,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:26:07,134 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:26:07,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:26:07,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:26:07,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:26:07,150 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:26:07,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:26:07,150 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:26:07,150 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:26:07,150 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:26:07,151 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:26:07,151 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:26:07,151 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:26:07,151 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:26:07,151 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:26:07,152 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:26:07,152 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:26:07,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:26:07,152 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:26:07,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:26:07,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:26:07,153 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:26:07,153 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:26:07,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:26:07,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:26:07,153 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:26:07,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:26:07,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:26:07,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:26:07,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:26:07,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:26:07,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:26:07,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:26:07,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:26:07,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:26:07,336 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:26:07,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:26:07,401 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_D8sDyz/tmp/ec07d0a2c7f647a0b0e7559631275fa1/FLAG87dbb6dbe [2020-07-01 12:26:07,730 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:26:07,731 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:26:07,731 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-07-01 12:26:07,738 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_D8sDyz/tmp/ec07d0a2c7f647a0b0e7559631275fa1/FLAG87dbb6dbe [2020-07-01 12:26:08,157 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_D8sDyz/tmp/ec07d0a2c7f647a0b0e7559631275fa1 [2020-07-01 12:26:08,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:26:08,169 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:26:08,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:26:08,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:26:08,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:26:08,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7542bf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08, skipping insertion in model container [2020-07-01 12:26:08,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:26:08,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:26:08,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:26:08,447 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:26:08,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:26:08,481 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:26:08,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08 WrapperNode [2020-07-01 12:26:08,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:26:08,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:26:08,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:26:08,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:26:08,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:26:08,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:26:08,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:26:08,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:26:08,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:26:08,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:26:08,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:26:08,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:26:08,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (1/1) ... No working directory specified, using /export/starexec/sandbox/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 12:26:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 12:26:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:26:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:26:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 12:26:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-01 12:26:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-01 12:26:08,869 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:26:08,869 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 12:26:08,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:26:08 BoogieIcfgContainer [2020-07-01 12:26:08,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:26:08,874 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:26:08,874 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:26:08,876 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:26:08,877 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:26:08" (1/1) ... [2020-07-01 12:26:08,891 INFO L313 BlockEncoder]: Initial Icfg 30 locations, 38 edges [2020-07-01 12:26:08,893 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:26:08,894 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:26:08,894 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:26:08,895 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:26:08,897 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:26:08,898 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:26:08,898 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:26:08,924 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:26:08,948 INFO L200 BlockEncoder]: SBE split 10 edges [2020-07-01 12:26:08,953 INFO L70 emoveInfeasibleEdges]: Removed 3 edges and 0 locations because of local infeasibility [2020-07-01 12:26:08,955 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:26:08,990 INFO L100 BaseMinimizeStates]: Removed 16 edges and 8 locations by large block encoding [2020-07-01 12:26:08,992 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:26:08,994 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:26:08,994 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:26:08,994 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:26:08,995 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:26:08,995 INFO L313 BlockEncoder]: Encoded RCFG 20 locations, 36 edges [2020-07-01 12:26:08,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:26:08 BasicIcfg [2020-07-01 12:26:08,996 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:26:08,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:26:08,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:26:09,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:26:09,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:26:08" (1/4) ... [2020-07-01 12:26:09,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1026dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:26:09, skipping insertion in model container [2020-07-01 12:26:09,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:26:08" (2/4) ... [2020-07-01 12:26:09,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1026dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:26:09, skipping insertion in model container [2020-07-01 12:26:09,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:26:08" (3/4) ... [2020-07-01 12:26:09,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1026dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:26:09, skipping insertion in model container [2020-07-01 12:26:09,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:26:08" (4/4) ... [2020-07-01 12:26:09,005 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:26:09,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:26:09,023 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-07-01 12:26:09,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-07-01 12:26:09,060 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:26:09,060 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:26:09,060 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:26:09,061 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:26:09,061 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:26:09,061 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:26:09,061 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:26:09,061 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:26:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-01 12:26:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:26:09,082 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:26:09,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:26:09,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:26:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:26:09,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1674118285, now seen corresponding path program 1 times [2020-07-01 12:26:09,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:26:09,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306958328] [2020-07-01 12:26:09,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:26:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:26:09,255 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 12:26:09,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306958328] [2020-07-01 12:26:09,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:26:09,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:26:09,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795906424] [2020-07-01 12:26:09,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:26:09,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:26:09,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:26:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:26:09,280 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-07-01 12:26:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:26:09,438 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2020-07-01 12:26:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:26:09,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-01 12:26:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:26:09,453 INFO L225 Difference]: With dead ends: 53 [2020-07-01 12:26:09,454 INFO L226 Difference]: Without dead ends: 37 [2020-07-01 12:26:09,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 12:26:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-01 12:26:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2020-07-01 12:26:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-01 12:26:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 39 transitions. [2020-07-01 12:26:09,497 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 39 transitions. Word has length 7 [2020-07-01 12:26:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:26:09,497 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 39 transitions. [2020-07-01 12:26:09,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:26:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 39 transitions. [2020-07-01 12:26:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:26:09,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:26:09,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:26:09,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 12:26:09,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:26:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:26:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1674088494, now seen corresponding path program 1 times [2020-07-01 12:26:09,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:26:09,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614043684] [2020-07-01 12:26:09,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:26:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:26:09,537 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 12:26:09,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614043684] [2020-07-01 12:26:09,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:26:09,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:26:09,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372398026] [2020-07-01 12:26:09,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:26:09,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:26:09,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:26:09,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:26:09,541 INFO L87 Difference]: Start difference. First operand 21 states and 39 transitions. Second operand 3 states. [2020-07-01 12:26:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:26:09,594 INFO L93 Difference]: Finished difference Result 37 states and 66 transitions. [2020-07-01 12:26:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:26:09,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-01 12:26:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:26:09,595 INFO L225 Difference]: With dead ends: 37 [2020-07-01 12:26:09,596 INFO L226 Difference]: Without dead ends: 21 [2020-07-01 12:26:09,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 12:26:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-01 12:26:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-01 12:26:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-01 12:26:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2020-07-01 12:26:09,601 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 7 [2020-07-01 12:26:09,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:26:09,601 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2020-07-01 12:26:09,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:26:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2020-07-01 12:26:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:26:09,602 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:26:09,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:26:09,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 12:26:09,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:26:09,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:26:09,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1674028912, now seen corresponding path program 1 times [2020-07-01 12:26:09,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:26:09,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127643178] [2020-07-01 12:26:09,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:26:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:26:09,633 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 12:26:09,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127643178] [2020-07-01 12:26:09,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:26:09,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:26:09,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081855585] [2020-07-01 12:26:09,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:26:09,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:26:09,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:26:09,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:26:09,635 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 3 states. [2020-07-01 12:26:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:26:09,679 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2020-07-01 12:26:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:26:09,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-01 12:26:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:26:09,681 INFO L225 Difference]: With dead ends: 21 [2020-07-01 12:26:09,681 INFO L226 Difference]: Without dead ends: 17 [2020-07-01 12:26:09,681 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 12:26:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-01 12:26:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-01 12:26:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 12:26:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2020-07-01 12:26:09,685 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 7 [2020-07-01 12:26:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:26:09,685 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2020-07-01 12:26:09,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:26:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2020-07-01 12:26:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:26:09,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:26:09,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:26:09,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 12:26:09,687 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:26:09,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:26:09,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1674028910, now seen corresponding path program 1 times [2020-07-01 12:26:09,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:26:09,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465062406] [2020-07-01 12:26:09,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:26:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:26:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:26:09,733 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:26:09,734 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-01 12:26:09,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 12:26:09,753 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 12:26:09,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:26:09 BasicIcfg [2020-07-01 12:26:09,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:26:09,757 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:26:09,757 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:26:09,760 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:26:09,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:26:09,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:26:09,761 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:26:09,761 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:26:09,761 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:26:09,761 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:26:09,763 INFO L168 Benchmark]: Toolchain (without parser) took 1593.57 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 556.3 MB in the beginning and 551.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,764 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 578.0 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:26:09,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.30 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 556.3 MB in the beginning and 654.0 MB in the end (delta: -97.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.29 ms. Allocated memory is still 691.0 MB. Free memory was 654.0 MB in the beginning and 652.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,766 INFO L168 Benchmark]: Boogie Preprocessor took 26.11 ms. Allocated memory is still 691.0 MB. Free memory was 652.6 MB in the beginning and 651.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,766 INFO L168 Benchmark]: RCFGBuilder took 323.56 ms. Allocated memory is still 691.0 MB. Free memory was 651.3 MB in the beginning and 627.6 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,767 INFO L168 Benchmark]: BlockEncodingV2 took 122.20 ms. Allocated memory is still 691.0 MB. Free memory was 627.6 MB in the beginning and 619.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,768 INFO L168 Benchmark]: TraceAbstraction took 758.94 ms. Allocated memory is still 691.0 MB. Free memory was 618.1 MB in the beginning and 553.2 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,768 INFO L168 Benchmark]: BuchiAutomizer took 4.24 ms. Allocated memory is still 691.0 MB. Free memory was 553.2 MB in the beginning and 551.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:26:09,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 30 locations, 38 edges - StatisticsResult: Encoded RCFG 20 locations, 36 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 578.0 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 312.30 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 556.3 MB in the beginning and 654.0 MB in the end (delta: -97.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 40.29 ms. Allocated memory is still 691.0 MB. Free memory was 654.0 MB in the beginning and 652.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 26.11 ms. Allocated memory is still 691.0 MB. Free memory was 652.6 MB in the beginning and 651.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 323.56 ms. Allocated memory is still 691.0 MB. Free memory was 651.3 MB in the beginning and 627.6 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 122.20 ms. Allocated memory is still 691.0 MB. Free memory was 627.6 MB in the beginning and 619.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 758.94 ms. Allocated memory is still 691.0 MB. Free memory was 618.1 MB in the beginning and 553.2 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.24 ms. Allocated memory is still 691.0 MB. Free memory was 553.2 MB in the beginning and 551.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int i, j; [L6] int val; [L7] int length = __VERIFIER_nondet_int(); [L8] COND FALSE !(length < 1) [L9] int *arr = alloca(length); [L10] COND FALSE !(!arr) [L11] i=0 [L11] COND TRUE i