/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:27:55,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:27:55,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:27:55,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:27:55,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:27:55,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:27:55,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:27:55,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:27:55,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:27:55,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:27:55,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:27:55,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:27:55,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:27:55,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:27:55,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:27:55,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:27:55,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:27:55,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:27:55,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:27:55,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:27:55,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:27:55,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:27:55,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:27:55,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:27:55,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 18:27:55,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:27:55,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:27:55,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:27:55,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:27:55,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:27:55,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:27:55,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:27:55,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:27:55,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:27:55,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:27:55,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:27:55,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:27:55,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:27:55,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:27:55,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:27:55,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:27:55,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:27:55,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:27:55,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:27:55,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:27:55,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:27:55,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:27:55,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:27:55,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:27:55,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:27:55,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:27:55,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:27:55,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:27:55,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:27:55,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:27:55,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:27:55,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:27:55,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:27:55,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:27:55,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:27:55,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:27:55,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:27:55,233 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:27:55,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:27:55,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:27:55,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:27:55,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:27:55,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:27:55,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:27:55,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:27:55,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:27:55,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:27:55,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2020-10-09 18:27:55,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9cbe01d7/0af75dcce1604d3d8bfd00662f19edc6/FLAGe3e12d02d [2020-10-09 18:27:56,203 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:27:56,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2020-10-09 18:27:56,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9cbe01d7/0af75dcce1604d3d8bfd00662f19edc6/FLAGe3e12d02d [2020-10-09 18:27:56,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9cbe01d7/0af75dcce1604d3d8bfd00662f19edc6 [2020-10-09 18:27:56,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:27:56,492 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:27:56,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:27:56,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:27:56,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:27:56,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:27:56" (1/1) ... [2020-10-09 18:27:56,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7361a193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:56, skipping insertion in model container [2020-10-09 18:27:56,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:27:56" (1/1) ... [2020-10-09 18:27:56,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:27:56,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:27:57,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:27:57,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:27:57,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:27:57,692 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:27:57,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57 WrapperNode [2020-10-09 18:27:57,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:27:57,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:27:57,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:27:57,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:27:57,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:27:57,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:27:57,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:27:57,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:27:57,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... [2020-10-09 18:27:57,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:27:57,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:27:57,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:27:57,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:27:57,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:27:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:27:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 18:27:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 18:27:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-09 18:27:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:27:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:27:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:27:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-09 18:27:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-09 18:27:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:27:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 18:27:57,876 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:27:58,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:27:58,416 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-09 18:27:58,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:27:58 BoogieIcfgContainer [2020-10-09 18:27:58,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:27:58,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:27:58,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:27:58,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:27:58,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:27:56" (1/3) ... [2020-10-09 18:27:58,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e3e524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:27:58, skipping insertion in model container [2020-10-09 18:27:58,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:27:57" (2/3) ... [2020-10-09 18:27:58,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e3e524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:27:58, skipping insertion in model container [2020-10-09 18:27:58,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:27:58" (3/3) ... [2020-10-09 18:27:58,431 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2020-10-09 18:27:58,443 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:27:58,452 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-09 18:27:58,454 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:27:58,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,494 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,494 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,500 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,501 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:27:58,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 18:27:58,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:27:58,545 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:27:58,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:27:58,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:27:58,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:27:58,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:27:58,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:27:58,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:27:58,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 178 flow [2020-10-09 18:27:58,622 INFO L129 PetriNetUnfolder]: 6/104 cut-off events. [2020-10-09 18:27:58,622 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-09 18:27:58,631 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 6/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2020-10-09 18:27:58,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 85 transitions, 178 flow [2020-10-09 18:27:58,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 75 transitions, 156 flow [2020-10-09 18:27:58,653 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2020-10-09 18:27:58,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:27:58,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:27:58,656 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:27:58,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:27:58,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:27:58,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2117655968, now seen corresponding path program 1 times [2020-10-09 18:27:58,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:27:58,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512619937] [2020-10-09 18:27:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:27:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:27:58,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 18:27:58,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:27:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:27:58,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:27:58,959 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:27:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:27:58,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512619937] [2020-10-09 18:27:58,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:27:58,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-09 18:27:58,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944688933] [2020-10-09 18:27:58,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 18:27:58,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:27:59,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 18:27:59,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 18:27:59,332 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 85 [2020-10-09 18:27:59,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 156 flow. Second operand 5 states. [2020-10-09 18:27:59,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:27:59,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 85 [2020-10-09 18:27:59,337 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:27:59,448 INFO L129 PetriNetUnfolder]: 5/97 cut-off events. [2020-10-09 18:27:59,448 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-09 18:27:59,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 97 events. 5/97 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 0 based on Foata normal form. 5/101 useless extension candidates. Maximal degree in co-relation 52. Up to 24 conditions per place. [2020-10-09 18:27:59,451 INFO L132 encePairwiseOnDemand]: 72/85 looper letters, 18 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2020-10-09 18:27:59,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 216 flow [2020-10-09 18:27:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:27:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:27:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2020-10-09 18:27:59,478 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.746218487394958 [2020-10-09 18:27:59,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 444 transitions. [2020-10-09 18:27:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 444 transitions. [2020-10-09 18:27:59,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:27:59,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 444 transitions. [2020-10-09 18:27:59,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:27:59,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:27:59,511 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:27:59,513 INFO L185 Difference]: Start difference. First operand has 75 places, 75 transitions, 156 flow. Second operand 7 states and 444 transitions. [2020-10-09 18:27:59,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 216 flow [2020-10-09 18:27:59,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 18:27:59,535 INFO L241 Difference]: Finished difference. Result has 80 places, 74 transitions, 191 flow [2020-10-09 18:27:59,538 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2020-10-09 18:27:59,539 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2020-10-09 18:27:59,539 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 191 flow [2020-10-09 18:27:59,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 18:27:59,540 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:27:59,541 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:27:59,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:27:59,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:27:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:27:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash 635554302, now seen corresponding path program 1 times [2020-10-09 18:27:59,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:27:59,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528760584] [2020-10-09 18:27:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:27:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:27:59,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 18:27:59,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:27:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:27:59,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:27:59,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:27:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:27:59,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528760584] [2020-10-09 18:27:59,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:27:59,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-09 18:27:59,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505726150] [2020-10-09 18:27:59,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 18:27:59,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:27:59,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 18:27:59,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 18:28:00,107 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 85 [2020-10-09 18:28:00,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 191 flow. Second operand 5 states. [2020-10-09 18:28:00,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:28:00,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 85 [2020-10-09 18:28:00,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:28:00,171 INFO L129 PetriNetUnfolder]: 5/95 cut-off events. [2020-10-09 18:28:00,171 INFO L130 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2020-10-09 18:28:00,172 INFO L80 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 95 events. 5/95 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 70. Up to 30 conditions per place. [2020-10-09 18:28:00,172 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 19 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2020-10-09 18:28:00,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 241 flow [2020-10-09 18:28:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:28:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:28:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 437 transitions. [2020-10-09 18:28:00,175 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7344537815126051 [2020-10-09 18:28:00,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 437 transitions. [2020-10-09 18:28:00,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 437 transitions. [2020-10-09 18:28:00,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:28:00,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 437 transitions. [2020-10-09 18:28:00,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:28:00,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:28:00,179 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:28:00,180 INFO L185 Difference]: Start difference. First operand has 80 places, 74 transitions, 191 flow. Second operand 7 states and 437 transitions. [2020-10-09 18:28:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 241 flow [2020-10-09 18:28:00,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 18:28:00,183 INFO L241 Difference]: Finished difference. Result has 82 places, 73 transitions, 200 flow [2020-10-09 18:28:00,184 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2020-10-09 18:28:00,185 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2020-10-09 18:28:00,185 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 200 flow [2020-10-09 18:28:00,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 18:28:00,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:28:00,185 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:28:00,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:28:00,397 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:28:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:28:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash -869917500, now seen corresponding path program 1 times [2020-10-09 18:28:00,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:28:00,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854327580] [2020-10-09 18:28:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:28:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:28:00,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 18:28:00,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:28:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:28:00,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:28:00,523 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:28:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:28:00,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854327580] [2020-10-09 18:28:00,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:28:00,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-09 18:28:00,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663171667] [2020-10-09 18:28:00,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 18:28:00,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:28:00,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 18:28:00,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 18:28:00,671 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 85 [2020-10-09 18:28:00,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 200 flow. Second operand 5 states. [2020-10-09 18:28:00,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:28:00,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 85 [2020-10-09 18:28:00,672 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:28:00,735 INFO L129 PetriNetUnfolder]: 4/120 cut-off events. [2020-10-09 18:28:00,735 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2020-10-09 18:28:00,736 INFO L80 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 120 events. 4/120 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 263 event pairs, 0 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 157. Up to 22 conditions per place. [2020-10-09 18:28:00,737 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 18 selfloop transitions, 11 changer transitions 11/84 dead transitions. [2020-10-09 18:28:00,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 306 flow [2020-10-09 18:28:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 18:28:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-09 18:28:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 506 transitions. [2020-10-09 18:28:00,740 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7441176470588236 [2020-10-09 18:28:00,740 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 506 transitions. [2020-10-09 18:28:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 506 transitions. [2020-10-09 18:28:00,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:28:00,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 506 transitions. [2020-10-09 18:28:00,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-09 18:28:00,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-09 18:28:00,744 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-09 18:28:00,744 INFO L185 Difference]: Start difference. First operand has 82 places, 73 transitions, 200 flow. Second operand 8 states and 506 transitions. [2020-10-09 18:28:00,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 306 flow [2020-10-09 18:28:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 281 flow, removed 3 selfloop flow, removed 5 redundant places. [2020-10-09 18:28:00,749 INFO L241 Difference]: Finished difference. Result has 88 places, 70 transitions, 214 flow [2020-10-09 18:28:00,749 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=214, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2020-10-09 18:28:00,750 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2020-10-09 18:28:00,750 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 214 flow [2020-10-09 18:28:00,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 18:28:00,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:28:00,750 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:28:00,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:28:00,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:28:00,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:28:00,961 INFO L82 PathProgramCache]: Analyzing trace with hash -107921470, now seen corresponding path program 1 times [2020-10-09 18:28:00,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:28:00,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000488491] [2020-10-09 18:28:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:28:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 18:28:01,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 18:28:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 18:28:01,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 18:28:01,138 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-10-09 18:28:01,139 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 18:28:01,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:28:01,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:28:01 BasicIcfg [2020-10-09 18:28:01,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:28:01,397 INFO L168 Benchmark]: Toolchain (without parser) took 4904.33 ms. Allocated memory was 252.7 MB in the beginning and 370.7 MB in the end (delta: 118.0 MB). Free memory was 205.4 MB in the beginning and 182.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 141.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,398 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1199.88 ms. Allocated memory was 252.7 MB in the beginning and 358.1 MB in the end (delta: 105.4 MB). Free memory was 205.4 MB in the beginning and 327.0 MB in the end (delta: -121.6 MB). Peak memory consumption was 109.3 MB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.97 ms. Allocated memory is still 358.1 MB. Free memory was 327.0 MB in the beginning and 322.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,400 INFO L168 Benchmark]: Boogie Preprocessor took 46.04 ms. Allocated memory is still 358.1 MB. Free memory was 322.7 MB in the beginning and 320.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,401 INFO L168 Benchmark]: RCFGBuilder took 612.68 ms. Allocated memory is still 358.1 MB. Free memory was 320.6 MB in the beginning and 281.6 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,402 INFO L168 Benchmark]: TraceAbstraction took 2974.48 ms. Allocated memory was 358.1 MB in the beginning and 370.7 MB in the end (delta: 12.6 MB). Free memory was 281.6 MB in the beginning and 182.2 MB in the end (delta: 99.4 MB). Peak memory consumption was 112.0 MB. Max. memory is 14.2 GB. [2020-10-09 18:28:01,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1199.88 ms. Allocated memory was 252.7 MB in the beginning and 358.1 MB in the end (delta: 105.4 MB). Free memory was 205.4 MB in the beginning and 327.0 MB in the end (delta: -121.6 MB). Peak memory consumption was 109.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 65.97 ms. Allocated memory is still 358.1 MB. Free memory was 327.0 MB in the beginning and 322.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 46.04 ms. Allocated memory is still 358.1 MB. Free memory was 322.7 MB in the beginning and 320.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.2 GB. * RCFGBuilder took 612.68 ms. Allocated memory is still 358.1 MB. Free memory was 320.6 MB in the beginning and 281.6 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2974.48 ms. Allocated memory was 358.1 MB in the beginning and 370.7 MB in the end (delta: 12.6 MB). Free memory was 281.6 MB in the beginning and 182.2 MB in the end (delta: 99.4 MB). Peak memory consumption was 112.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1682]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1683] 0 pthread_t t1; VAL [t1={2:0}] [L1684] 0 pthread_mutex_t mutex; VAL [mutex={4:0}, t1={2:0}] [L1685] 0 int pdev; VAL [mutex={4:0}, pdev=0, t1={2:0}] [L1694] 0 pdev = 1 VAL [mutex={4:0}, pdev=1, t1={2:0}] [L1682] COND FALSE 0 !(!expression) VAL [mutex={4:0}, pdev=1, t1={2:0}] [L1696] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={4:0}, pdev=1, t1={2:0}] [L1697] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, t1={2:0}] [L1698] 0 return 0; VAL [arg={0:0}, mutex={4:0}, pdev=1, t1={2:0}] [L1715] COND FALSE 0 !(module_init()!=0) VAL [arg={0:0}, mutex={4:0}, pdev=1, t1={2:0}] [L1706] 0 void *status; VAL [arg={0:0}, mutex={4:0}, pdev=1, t1={2:0}] [L1707] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, t1={2:0}] [L1688] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={2:0}] [L1682] COND TRUE 0 !expression VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={2:0}] [L1682] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 115 SDslu, 133 SDs, 0 SdLazy, 201 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 7440 SizeOfPredicates, 9 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! Received shutdown request...