/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_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:00:40,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:00:40,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:00:40,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:00:40,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:00:40,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:00:41,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:00:41,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:00:41,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:00:41,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:00:41,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:00:41,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:00:41,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:00:41,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:00:41,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:00:41,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:00:41,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:00:41,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:00:41,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:00:41,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:00:41,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:00:41,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:00:41,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:00:41,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:00:41,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 19:00:41,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:00:41,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:00:41,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:00:41,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:00:41,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:00:41,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:00:41,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:00:41,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:00:41,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:00:41,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:00:41,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:00:41,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 19:00:41,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:00:41,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:00:41,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:00:41,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:00:41,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:00:41,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:00:41,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:00:41,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:00:41,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:00:41,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:00:41,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:00:41,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:00:41,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:00:41,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:00:41,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:00:41,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:00:41,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:00:41,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:00:41,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:00:41,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:00:41,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:00:41,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:00:41,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:00:41,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:00:41,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:00:41,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:00:41,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:00:41,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:00:41,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:00:41,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:00:41,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:00:41,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:00:41,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:00:41,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:00:41,435 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:00:41,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2020-10-11 19:00:41,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1beceaaba/675924fd15cf45d09c4732315dec8d35/FLAG345113386 [2020-10-11 19:00:42,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:00:42,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2020-10-11 19:00:42,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1beceaaba/675924fd15cf45d09c4732315dec8d35/FLAG345113386 [2020-10-11 19:00:42,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1beceaaba/675924fd15cf45d09c4732315dec8d35 [2020-10-11 19:00:42,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:00:42,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:00:42,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:42,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:00:42,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:00:42,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:42" (1/1) ... [2020-10-11 19:00:42,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f4bb4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:42, skipping insertion in model container [2020-10-11 19:00:42,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:42" (1/1) ... [2020-10-11 19:00:42,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:00:42,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:00:43,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:43,142 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:00:43,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:43,632 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:00:43,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43 WrapperNode [2020-10-11 19:00:43,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:43,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:43,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:00:43,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:00:43,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:43,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:00:43,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:00:43,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:00:43,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (1/1) ... [2020-10-11 19:00:43,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:00:43,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:00:43,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:00:43,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:00:43,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (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 [2020-10-11 19:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 19:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 19:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:00:43,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-11 19:00:43,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-11 19:00:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:00:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:00:43,838 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 19:00:44,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:00:44,370 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-11 19:00:44,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:00:44 BoogieIcfgContainer [2020-10-11 19:00:44,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:00:44,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:00:44,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:00:44,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:00:44,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:00:42" (1/3) ... [2020-10-11 19:00:44,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394c715c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:00:44, skipping insertion in model container [2020-10-11 19:00:44,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:43" (2/3) ... [2020-10-11 19:00:44,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394c715c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:00:44, skipping insertion in model container [2020-10-11 19:00:44,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:00:44" (3/3) ... [2020-10-11 19:00:44,380 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2020-10-11 19:00:44,391 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:00:44,400 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-11 19:00:44,401 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:00:44,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,427 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,427 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,432 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,432 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,432 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:44,458 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 19:00:44,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:00:44,479 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:00:44,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:00:44,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:00:44,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:00:44,480 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:00:44,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:00:44,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:00:44,494 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 178 flow [2020-10-11 19:00:44,533 INFO L129 PetriNetUnfolder]: 5/96 cut-off events. [2020-10-11 19:00:44,534 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:00:44,538 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 5/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-10-11 19:00:44,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 85 transitions, 178 flow [2020-10-11 19:00:44,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2020-10-11 19:00:44,552 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2020-10-11 19:00:44,552 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:00:44,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:44,553 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] [2020-10-11 19:00:44,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:44,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1989124765, now seen corresponding path program 1 times [2020-10-11 19:00:44,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:44,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372327039] [2020-10-11 19:00:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:00:45,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372327039] [2020-10-11 19:00:45,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:45,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:45,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027825693] [2020-10-11 19:00:45,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:45,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:45,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:45,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:45,382 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2020-10-11 19:00:45,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 150 flow. Second operand 5 states. [2020-10-11 19:00:45,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:45,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2020-10-11 19:00:45,386 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:45,464 INFO L129 PetriNetUnfolder]: 6/92 cut-off events. [2020-10-11 19:00:45,464 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:00:45,465 INFO L80 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 92 events. 6/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 148 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 66. Up to 17 conditions per place. [2020-10-11 19:00:45,467 INFO L132 encePairwiseOnDemand]: 71/85 looper letters, 15 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2020-10-11 19:00:45,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 204 flow [2020-10-11 19:00:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 19:00:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 19:00:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 414 transitions. [2020-10-11 19:00:45,484 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6957983193277311 [2020-10-11 19:00:45,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 414 transitions. [2020-10-11 19:00:45,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 414 transitions. [2020-10-11 19:00:45,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:45,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 414 transitions. [2020-10-11 19:00:45,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 19:00:45,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 19:00:45,505 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 19:00:45,507 INFO L185 Difference]: Start difference. First operand has 74 places, 72 transitions, 150 flow. Second operand 7 states and 414 transitions. [2020-10-11 19:00:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 204 flow [2020-10-11 19:00:45,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 19:00:45,518 INFO L241 Difference]: Finished difference. Result has 77 places, 70 transitions, 174 flow [2020-10-11 19:00:45,521 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2020-10-11 19:00:45,522 INFO L341 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2020-10-11 19:00:45,522 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 174 flow [2020-10-11 19:00:45,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:45,523 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:45,523 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] [2020-10-11 19:00:45,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:00:45,524 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:45,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1891934240, now seen corresponding path program 1 times [2020-10-11 19:00:45,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:45,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351022279] [2020-10-11 19:00:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:00:45,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351022279] [2020-10-11 19:00:45,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:45,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:45,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528441857] [2020-10-11 19:00:45,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:45,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:45,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:45,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:45,941 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2020-10-11 19:00:45,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 174 flow. Second operand 5 states. [2020-10-11 19:00:45,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:45,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2020-10-11 19:00:45,943 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:45,999 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2020-10-11 19:00:46,000 INFO L130 PetriNetUnfolder]: For 12/15 co-relation queries the response was YES. [2020-10-11 19:00:46,000 INFO L80 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 90 events. 6/90 cut-off events. For 12/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 138 event pairs, 2 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 17. Up to 18 conditions per place. [2020-10-11 19:00:46,001 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 17 selfloop transitions, 4 changer transitions 6/69 dead transitions. [2020-10-11 19:00:46,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 224 flow [2020-10-11 19:00:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:00:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:00:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2020-10-11 19:00:46,005 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2020-10-11 19:00:46,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 354 transitions. [2020-10-11 19:00:46,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 354 transitions. [2020-10-11 19:00:46,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:46,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 354 transitions. [2020-10-11 19:00:46,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:00:46,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:00:46,008 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:00:46,009 INFO L185 Difference]: Start difference. First operand has 77 places, 70 transitions, 174 flow. Second operand 6 states and 354 transitions. [2020-10-11 19:00:46,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 224 flow [2020-10-11 19:00:46,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 204 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-11 19:00:46,013 INFO L241 Difference]: Finished difference. Result has 75 places, 62 transitions, 144 flow [2020-10-11 19:00:46,013 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2020-10-11 19:00:46,014 INFO L341 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2020-10-11 19:00:46,014 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 144 flow [2020-10-11 19:00:46,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:46,015 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:46,015 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] [2020-10-11 19:00:46,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:00:46,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:46,016 INFO L82 PathProgramCache]: Analyzing trace with hash -440006597, now seen corresponding path program 1 times [2020-10-11 19:00:46,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:46,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024721793] [2020-10-11 19:00:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:00:46,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024721793] [2020-10-11 19:00:46,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:46,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:46,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028013961] [2020-10-11 19:00:46,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:46,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:46,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:46,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:46,299 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2020-10-11 19:00:46,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 144 flow. Second operand 5 states. [2020-10-11 19:00:46,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:46,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2020-10-11 19:00:46,300 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:46,374 INFO L129 PetriNetUnfolder]: 5/119 cut-off events. [2020-10-11 19:00:46,375 INFO L130 PetriNetUnfolder]: For 9/12 co-relation queries the response was YES. [2020-10-11 19:00:46,375 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 119 events. 5/119 cut-off events. For 9/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 290 event pairs, 0 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 32. Up to 12 conditions per place. [2020-10-11 19:00:46,376 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 16 selfloop transitions, 16 changer transitions 0/74 dead transitions. [2020-10-11 19:00:46,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 244 flow [2020-10-11 19:00:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 19:00:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 19:00:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-10-11 19:00:46,379 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6955882352941176 [2020-10-11 19:00:46,379 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-10-11 19:00:46,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-10-11 19:00:46,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:46,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-10-11 19:00:46,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 19:00:46,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 19:00:46,383 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 19:00:46,383 INFO L185 Difference]: Start difference. First operand has 75 places, 62 transitions, 144 flow. Second operand 8 states and 473 transitions. [2020-10-11 19:00:46,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 244 flow [2020-10-11 19:00:46,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 19:00:46,387 INFO L241 Difference]: Finished difference. Result has 75 places, 72 transitions, 224 flow [2020-10-11 19:00:46,387 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2020-10-11 19:00:46,387 INFO L341 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2020-10-11 19:00:46,388 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 224 flow [2020-10-11 19:00:46,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:46,388 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:46,388 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] [2020-10-11 19:00:46,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:00:46,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:46,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1775474631, now seen corresponding path program 1 times [2020-10-11 19:00:46,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:46,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662281886] [2020-10-11 19:00:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:00:46,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:00:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:00:46,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:00:46,469 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 19:00:46,469 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 19:00:46,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:00:46,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:00:46 BasicIcfg [2020-10-11 19:00:46,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 19:00:46,512 INFO L168 Benchmark]: Toolchain (without parser) took 4165.29 ms. Allocated memory was 250.6 MB in the beginning and 368.6 MB in the end (delta: 118.0 MB). Free memory was 203.2 MB in the beginning and 198.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:46,513 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 19:00:46,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1286.20 ms. Allocated memory was 250.6 MB in the beginning and 354.4 MB in the end (delta: 103.8 MB). Free memory was 203.2 MB in the beginning and 320.8 MB in the end (delta: -117.6 MB). Peak memory consumption was 109.2 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:46,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.32 ms. Allocated memory is still 354.4 MB. Free memory was 320.8 MB in the beginning and 317.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:46,515 INFO L168 Benchmark]: Boogie Preprocessor took 42.39 ms. Allocated memory is still 354.4 MB. Free memory was 317.3 MB in the beginning and 313.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:46,516 INFO L168 Benchmark]: RCFGBuilder took 609.89 ms. Allocated memory is still 354.4 MB. Free memory was 313.9 MB in the beginning and 273.6 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:46,517 INFO L168 Benchmark]: TraceAbstraction took 2136.30 ms. Allocated memory was 354.4 MB in the beginning and 368.6 MB in the end (delta: 14.2 MB). Free memory was 273.6 MB in the beginning and 198.0 MB in the end (delta: 75.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:46,522 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1286.20 ms. Allocated memory was 250.6 MB in the beginning and 354.4 MB in the end (delta: 103.8 MB). Free memory was 203.2 MB in the beginning and 320.8 MB in the end (delta: -117.6 MB). Peak memory consumption was 109.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 85.32 ms. Allocated memory is still 354.4 MB. Free memory was 320.8 MB in the beginning and 317.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 42.39 ms. Allocated memory is still 354.4 MB. Free memory was 317.3 MB in the beginning and 313.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. * RCFGBuilder took 609.89 ms. Allocated memory is still 354.4 MB. Free memory was 313.9 MB in the beginning and 273.6 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2136.30 ms. Allocated memory was 354.4 MB in the beginning and 368.6 MB in the end (delta: 14.2 MB). Free memory was 273.6 MB in the beginning and 198.0 MB in the end (delta: 75.6 MB). Peak memory consumption was 89.8 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={3:0}] [L1684] 0 pthread_mutex_t mutex; VAL [mutex={2:0}, t1={3:0}] [L1685] 0 int pdev; VAL [mutex={2:0}, pdev=0, t1={3:0}] [L1694] 0 pdev = 1 VAL [mutex={2:0}, pdev=1, t1={3:0}] [L1682] COND FALSE 0 !(!expression) VAL [mutex={2:0}, pdev=1, t1={3:0}] [L1696] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={2:0}, pdev=1, t1={3:0}] [L1697] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={2:0}, pdev=1, t1={3:0}] [L1698] 0 pdev = 2 VAL [arg={0:0}, mutex={2:0}, pdev=2, t1={3:0}] [L1688] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={2:0}, pdev=6, t1={3:0}] [L1682] COND TRUE 0 !expression VAL [arg={0:0}, arg={0:0}, mutex={2:0}, pdev=6, t1={3:0}] [L1682] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, mutex={2:0}, pdev=6, t1={3:0}] - 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: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 137 SDslu, 170 SDs, 0 SdLazy, 260 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred 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, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...