MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 08:28:39,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 08:28:39,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 08:28:39,572 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 08:28:39,573 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 08:28:39,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 08:28:39,575 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 08:28:39,577 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 08:28:39,578 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 08:28:39,579 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 08:28:39,580 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 08:28:39,580 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 08:28:39,581 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 08:28:39,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 08:28:39,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 08:28:39,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 08:28:39,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 08:28:39,586 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 08:28:39,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 08:28:39,589 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 08:28:39,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 08:28:39,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 08:28:39,593 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 08:28:39,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 08:28:39,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 08:28:39,595 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 08:28:39,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 08:28:39,596 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 08:28:39,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 08:28:39,597 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 08:28:39,598 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 08:28:39,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 08:28:39,599 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 08:28:39,600 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 08:28:39,600 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 08:28:39,600 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 08:28:39,601 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 08:28:39,602 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 08:28:39,602 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 08:28:39,603 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 08:28:39,618 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 08:28:39,618 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 08:28:39,620 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 08:28:39,620 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 08:28:39,620 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 08:28:39,621 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:28:39,621 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 08:28:39,621 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 08:28:39,621 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 08:28:39,621 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 08:28:39,621 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 08:28:39,622 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 08:28:39,622 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 08:28:39,622 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 08:28:39,622 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:28:39,622 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 08:28:39,623 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 08:28:39,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 08:28:39,623 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 08:28:39,623 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 08:28:39,623 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 08:28:39,623 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 08:28:39,624 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 08:28:39,624 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 08:28:39,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:28:39,624 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 08:28:39,624 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 08:28:39,625 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 08:28:39,625 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 08:28:39,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 08:28:39,667 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 08:28:39,670 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 08:28:39,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 08:28:39,672 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 08:28:39,673 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:28:39,735 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/4ac48f4776be43969901568a52ef2790/FLAGbd75263f5 !SESSION 2020-06-22 08:28:37.221 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-22 08:28:39.998 !MESSAGE Indexed 'FLAGbd75263f5' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-22 08:28:40,082 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 08:28:40,083 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:28:40,089 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/4ac48f4776be43969901568a52ef2790/FLAGbd75263f5 [2020-06-22 08:28:40,522 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/4ac48f4776be43969901568a52ef2790 [2020-06-22 08:28:40,533 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 08:28:40,534 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 08:28:40,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 08:28:40,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 08:28:40,539 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 08:28:40,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40, skipping insertion in model container [2020-06-22 08:28:40,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 08:28:40,569 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 08:28:40,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:28:40,815 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 08:28:40,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:28:40,850 INFO L195 MainTranslator]: Completed translation [2020-06-22 08:28:40,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40 WrapperNode [2020-06-22 08:28:40,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 08:28:40,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 08:28:40,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 08:28:40,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 08:28:40,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 08:28:40,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 08:28:40,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 08:28:40,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 08:28:40,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 08:28:40,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 08:28:40,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 08:28:40,921 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 08:28:40,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (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 [2020-06-22 08:28:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-06-22 08:28:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 08:28:40,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 08:28:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-06-22 08:28:41,222 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 08:28:41,222 INFO L286 CfgBuilder]: Removed 8 assue(true) statements. [2020-06-22 08:28:41,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41 BoogieIcfgContainer [2020-06-22 08:28:41,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 08:28:41,224 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 08:28:41,225 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 08:28:41,227 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 08:28:41,228 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,244 INFO L313 BlockEncoder]: Initial Icfg 21 locations, 25 edges [2020-06-22 08:28:41,246 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 08:28:41,247 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 08:28:41,247 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 08:28:41,247 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:28:41,249 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 08:28:41,250 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 08:28:41,250 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 08:28:41,269 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 08:28:41,289 INFO L200 BlockEncoder]: SBE split 8 edges [2020-06-22 08:28:41,294 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 08:28:41,296 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:28:41,337 INFO L100 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2020-06-22 08:28:41,340 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-22 08:28:41,341 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 08:28:41,342 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:28:41,342 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 08:28:41,342 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 08:28:41,343 INFO L313 BlockEncoder]: Encoded RCFG 14 locations, 23 edges [2020-06-22 08:28:41,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:28:41 BasicIcfg [2020-06-22 08:28:41,343 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 08:28:41,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 08:28:41,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 08:28:41,348 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 08:28:41,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 08:28:40" (1/4) ... [2020-06-22 08:28:41,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb5257e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (2/4) ... [2020-06-22 08:28:41,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb5257e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41" (3/4) ... [2020-06-22 08:28:41,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb5257e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:28:41" (4/4) ... [2020-06-22 08:28:41,352 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:28:41,361 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 08:28:41,369 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-06-22 08:28:41,386 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-06-22 08:28:41,415 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:28:41,416 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 08:28:41,416 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 08:28:41,416 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:28:41,416 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:28:41,416 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:28:41,416 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 08:28:41,417 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:28:41,417 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 08:28:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-06-22 08:28:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-06-22 08:28:41,437 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:41,438 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-06-22 08:28:41,439 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION]=== [2020-06-22 08:28:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:41,444 INFO L82 PathProgramCache]: Analyzing trace with hash 126780, now seen corresponding path program 1 times [2020-06-22 08:28:41,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:41,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:41,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:41,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:28:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:28:41,581 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2020-06-22 08:28:41,604 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-06-22 08:28:41,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:28:41 BasicIcfg [2020-06-22 08:28:41,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 08:28:41,608 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 08:28:41,608 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 08:28:41,611 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 08:28:41,611 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:41,611 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:41,611 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:41,612 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:41,612 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:41,612 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 08:28:41,612 INFO L168 Benchmark]: Toolchain (without parser) took 1078.84 ms. Allocated memory was 649.6 MB in the beginning and 697.8 MB in the end (delta: 48.2 MB). Free memory was 566.0 MB in the beginning and 610.5 MB in the end (delta: -44.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,615 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 591.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:28:41,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.84 ms. Allocated memory was 649.6 MB in the beginning and 697.8 MB in the end (delta: 48.2 MB). Free memory was 564.9 MB in the beginning and 663.0 MB in the end (delta: -98.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 697.8 MB. Free memory was 663.0 MB in the beginning and 660.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,617 INFO L168 Benchmark]: Boogie Preprocessor took 24.99 ms. Allocated memory is still 697.8 MB. Free memory was 660.8 MB in the beginning and 658.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,618 INFO L168 Benchmark]: RCFGBuilder took 303.69 ms. Allocated memory is still 697.8 MB. Free memory was 658.7 MB in the beginning and 638.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,618 INFO L168 Benchmark]: BlockEncodingV2 took 119.06 ms. Allocated memory is still 697.8 MB. Free memory was 638.6 MB in the beginning and 631.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,619 INFO L168 Benchmark]: TraceAbstraction took 262.67 ms. Allocated memory is still 697.8 MB. Free memory was 631.0 MB in the beginning and 611.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:41,620 INFO L168 Benchmark]: BuchiAutomizer took 4.40 ms. Allocated memory is still 697.8 MB. Free memory is still 610.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:28:41,624 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 21 locations, 25 edges - StatisticsResult: Encoded RCFG 14 locations, 23 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 591.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 315.84 ms. Allocated memory was 649.6 MB in the beginning and 697.8 MB in the end (delta: 48.2 MB). Free memory was 564.9 MB in the beginning and 663.0 MB in the end (delta: -98.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 697.8 MB. Free memory was 663.0 MB in the beginning and 660.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 24.99 ms. Allocated memory is still 697.8 MB. Free memory was 660.8 MB in the beginning and 658.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 303.69 ms. Allocated memory is still 697.8 MB. Free memory was 658.7 MB in the beginning and 638.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 119.06 ms. Allocated memory is still 697.8 MB. Free memory was 638.6 MB in the beginning and 631.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 50.3 GB. * TraceAbstraction took 262.67 ms. Allocated memory is still 697.8 MB. Free memory was 631.0 MB in the beginning and 611.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.40 ms. Allocated memory is still 697.8 MB. Free memory is still 610.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 6 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 08:28:41.853 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check