/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:27:21,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:27:21,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:27:21,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:27:21,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:27:21,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:27:21,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:27:21,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:27:21,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:27:21,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:27:21,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:27:21,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:27:21,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:27:21,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:27:21,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:27:21,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:27:21,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:27:21,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:27:21,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:27:21,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:27:21,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:27:21,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:27:21,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:27:21,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:27:21,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:27:21,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:27:21,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:27:21,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:27:21,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 00:27:21,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:27:21,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:27:21,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:27:21,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:27:21,452 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:27:21,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:27:21,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:27:21,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:27:21,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:27:21,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:27:21,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:27:21,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:27:21,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:27:21,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:27:21,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:27:21,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:27:21,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:27:21,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:27:21,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:27:21,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:27:21,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:27:21,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:27:21,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:27:21,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:27:21,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:27:21,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:27:21,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:27:21,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:27:21,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:27:21,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:27:21,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:27:21,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:27:21,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:27:21,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:27:21,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-16 00:27:21,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d98bbda2/476e4f5d2a7a4da3b74c40260d3ba50a/FLAGcc086b50e [2020-10-16 00:27:22,340 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:27:22,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-16 00:27:22,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d98bbda2/476e4f5d2a7a4da3b74c40260d3ba50a/FLAGcc086b50e [2020-10-16 00:27:22,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d98bbda2/476e4f5d2a7a4da3b74c40260d3ba50a [2020-10-16 00:27:22,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:27:22,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:27:22,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:27:22,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:27:22,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:27:22,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:27:22" (1/1) ... [2020-10-16 00:27:22,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb5cac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:22, skipping insertion in model container [2020-10-16 00:27:22,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:27:22" (1/1) ... [2020-10-16 00:27:22,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:27:22,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:27:23,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:27:23,291 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:27:23,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:27:23,468 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:27:23,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23 WrapperNode [2020-10-16 00:27:23,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:27:23,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:27:23,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:27:23,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:27:23,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:27:23,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:27:23,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:27:23,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:27:23,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (1/1) ... [2020-10-16 00:27:23,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:27:23,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:27:23,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:27:23,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:27:23,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (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 [2020-10-16 00:27:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 00:27:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:27:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:27:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:27:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:27:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:27:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 00:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:27:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:27:23,624 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 00:27:24,413 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:27:24,414 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 00:27:24,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:27:24 BoogieIcfgContainer [2020-10-16 00:27:24,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:27:24,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:27:24,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:27:24,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:27:24,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:27:22" (1/3) ... [2020-10-16 00:27:24,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd6756d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:27:24, skipping insertion in model container [2020-10-16 00:27:24,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:23" (2/3) ... [2020-10-16 00:27:24,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd6756d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:27:24, skipping insertion in model container [2020-10-16 00:27:24,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:27:24" (3/3) ... [2020-10-16 00:27:24,426 INFO L111 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2020-10-16 00:27:24,438 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:27:24,446 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:27:24,447 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:27:24,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,477 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,477 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,478 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:24,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 00:27:24,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:27:24,527 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:27:24,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:27:24,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:27:24,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:27:24,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:27:24,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:27:24,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:27:24,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-16 00:27:24,573 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 00:27:24,573 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:24,579 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-16 00:27:24,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 54 transitions, 113 flow [2020-10-16 00:27:24,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 109 flow [2020-10-16 00:27:24,588 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:27:24,591 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 53 transitions, 109 flow [2020-10-16 00:27:24,594 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 53 transitions, 109 flow [2020-10-16 00:27:24,594 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 109 flow [2020-10-16 00:27:24,609 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 00:27:24,610 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:24,610 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-16 00:27:24,612 INFO L117 LiptonReduction]: Number of co-enabled transitions 704 [2020-10-16 00:27:27,020 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 00:27:27,114 INFO L132 LiptonReduction]: Checked pairs total: 2268 [2020-10-16 00:27:27,115 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 00:27:27,117 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2531 [2020-10-16 00:27:27,124 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2020-10-16 00:27:27,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:27,125 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:27,126 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 00:27:27,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash 410803717, now seen corresponding path program 1 times [2020-10-16 00:27:27,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:27,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981505920] [2020-10-16 00:27:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:27,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981505920] [2020-10-16 00:27:27,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:27,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:27:27,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232176733] [2020-10-16 00:27:27,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:27,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:27,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:27,347 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 104 [2020-10-16 00:27:27,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 41 flow. Second operand 3 states. [2020-10-16 00:27:27,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:27,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 104 [2020-10-16 00:27:27,350 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:27,374 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2020-10-16 00:27:27,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:27,374 INFO L80 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 17 events. 1/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 3/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2020-10-16 00:27:27,376 INFO L132 encePairwiseOnDemand]: 100/104 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 00:27:27,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 43 flow [2020-10-16 00:27:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2020-10-16 00:27:27,392 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8173076923076923 [2020-10-16 00:27:27,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2020-10-16 00:27:27,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2020-10-16 00:27:27,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:27,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2020-10-16 00:27:27,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:27,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:27,408 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:27,411 INFO L185 Difference]: Start difference. First operand has 20 places, 19 transitions, 41 flow. Second operand 3 states and 255 transitions. [2020-10-16 00:27:27,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 43 flow [2020-10-16 00:27:27,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 42 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:27:27,417 INFO L241 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2020-10-16 00:27:27,420 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2020-10-16 00:27:27,421 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2020-10-16 00:27:27,421 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2020-10-16 00:27:27,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:27,421 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:27,421 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 00:27:27,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:27:27,422 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash 410822139, now seen corresponding path program 1 times [2020-10-16 00:27:27,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:27,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228414690] [2020-10-16 00:27:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:27,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228414690] [2020-10-16 00:27:27,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:27,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:27:27,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918344623] [2020-10-16 00:27:27,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:27,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:27,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:27,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:27,499 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 104 [2020-10-16 00:27:27,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 00:27:27,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:27,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 104 [2020-10-16 00:27:27,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:27,525 INFO L129 PetriNetUnfolder]: 5/40 cut-off events. [2020-10-16 00:27:27,525 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:27,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 40 events. 5/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 128 event pairs, 2 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 63. Up to 15 conditions per place. [2020-10-16 00:27:27,526 INFO L132 encePairwiseOnDemand]: 98/104 looper letters, 6 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2020-10-16 00:27:27,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 66 flow [2020-10-16 00:27:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2020-10-16 00:27:27,529 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7884615384615384 [2020-10-16 00:27:27,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2020-10-16 00:27:27,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2020-10-16 00:27:27,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:27,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2020-10-16 00:27:27,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:27,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:27,533 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:27,533 INFO L185 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 246 transitions. [2020-10-16 00:27:27,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 66 flow [2020-10-16 00:27:27,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 62 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:27:27,534 INFO L241 Difference]: Finished difference. Result has 23 places, 19 transitions, 64 flow [2020-10-16 00:27:27,534 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2020-10-16 00:27:27,535 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2020-10-16 00:27:27,535 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 64 flow [2020-10-16 00:27:27,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:27,536 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:27,536 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:27:27,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:27:27,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1895073623, now seen corresponding path program 1 times [2020-10-16 00:27:27,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:27,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823701057] [2020-10-16 00:27:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:27,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823701057] [2020-10-16 00:27:27,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:27,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:27:27,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619687865] [2020-10-16 00:27:27,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:27,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:27,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:27,581 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 104 [2020-10-16 00:27:27,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 00:27:27,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:27,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 104 [2020-10-16 00:27:27,582 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:27,605 INFO L129 PetriNetUnfolder]: 2/32 cut-off events. [2020-10-16 00:27:27,605 INFO L130 PetriNetUnfolder]: For 11/17 co-relation queries the response was YES. [2020-10-16 00:27:27,605 INFO L80 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 32 events. 2/32 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 92 event pairs, 1 based on Foata normal form. 4/30 useless extension candidates. Maximal degree in co-relation 69. Up to 10 conditions per place. [2020-10-16 00:27:27,606 INFO L132 encePairwiseOnDemand]: 100/104 looper letters, 5 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2020-10-16 00:27:27,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 82 flow [2020-10-16 00:27:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2020-10-16 00:27:27,608 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2020-10-16 00:27:27,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2020-10-16 00:27:27,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2020-10-16 00:27:27,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:27,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2020-10-16 00:27:27,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:27,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:27,611 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:27,611 INFO L185 Difference]: Start difference. First operand has 23 places, 19 transitions, 64 flow. Second operand 3 states and 244 transitions. [2020-10-16 00:27:27,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 82 flow [2020-10-16 00:27:27,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:27:27,613 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 59 flow [2020-10-16 00:27:27,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2020-10-16 00:27:27,613 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, 4 predicate places. [2020-10-16 00:27:27,613 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 59 flow [2020-10-16 00:27:27,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:27,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:27,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:27:27,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:27:27,614 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:27,615 INFO L82 PathProgramCache]: Analyzing trace with hash 695736553, now seen corresponding path program 1 times [2020-10-16 00:27:27,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:27,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073182568] [2020-10-16 00:27:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:27,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073182568] [2020-10-16 00:27:27,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:27,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 00:27:27,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508436354] [2020-10-16 00:27:27,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 00:27:27,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 00:27:27,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-16 00:27:27,708 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2020-10-16 00:27:27,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 59 flow. Second operand 6 states. [2020-10-16 00:27:27,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:27,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2020-10-16 00:27:27,709 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:27,794 INFO L129 PetriNetUnfolder]: 11/47 cut-off events. [2020-10-16 00:27:27,795 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-16 00:27:27,795 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 47 events. 11/47 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 121 event pairs, 2 based on Foata normal form. 3/47 useless extension candidates. Maximal degree in co-relation 126. Up to 19 conditions per place. [2020-10-16 00:27:27,796 INFO L132 encePairwiseOnDemand]: 96/104 looper letters, 7 selfloop transitions, 10 changer transitions 5/24 dead transitions. [2020-10-16 00:27:27,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 128 flow [2020-10-16 00:27:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 00:27:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 00:27:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 294 transitions. [2020-10-16 00:27:27,798 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2020-10-16 00:27:27,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 294 transitions. [2020-10-16 00:27:27,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 294 transitions. [2020-10-16 00:27:27,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:27,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 294 transitions. [2020-10-16 00:27:27,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 00:27:27,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 00:27:27,801 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 00:27:27,801 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 59 flow. Second operand 6 states and 294 transitions. [2020-10-16 00:27:27,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 128 flow [2020-10-16 00:27:27,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:27:27,803 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 84 flow [2020-10-16 00:27:27,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2020-10-16 00:27:27,804 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2020-10-16 00:27:27,804 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 84 flow [2020-10-16 00:27:27,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 00:27:27,804 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:27,805 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:27:27,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:27:27,805 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:27,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:27,805 INFO L82 PathProgramCache]: Analyzing trace with hash 101214825, now seen corresponding path program 2 times [2020-10-16 00:27:27,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:27,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137186479] [2020-10-16 00:27:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:27,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137186479] [2020-10-16 00:27:27,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:27,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:27:27,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162420460] [2020-10-16 00:27:27,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:27,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:27,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:27,845 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 104 [2020-10-16 00:27:27,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 84 flow. Second operand 3 states. [2020-10-16 00:27:27,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:27,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 104 [2020-10-16 00:27:27,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:27,853 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2020-10-16 00:27:27,854 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 00:27:27,854 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 11 events. 0/11 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 00:27:27,854 INFO L132 encePairwiseOnDemand]: 102/104 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2020-10-16 00:27:27,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 11 transitions, 50 flow [2020-10-16 00:27:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2020-10-16 00:27:27,856 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2020-10-16 00:27:27,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2020-10-16 00:27:27,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2020-10-16 00:27:27,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:27,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2020-10-16 00:27:27,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:27,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:27,858 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:27,858 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 84 flow. Second operand 3 states and 244 transitions. [2020-10-16 00:27:27,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 11 transitions, 50 flow [2020-10-16 00:27:27,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 11 transitions, 37 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 00:27:27,859 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2020-10-16 00:27:27,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2020-10-16 00:27:27,860 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2020-10-16 00:27:27,860 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2020-10-16 00:27:27,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:27,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:27:27,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:27:27 BasicIcfg [2020-10-16 00:27:27,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:27:27,867 INFO L168 Benchmark]: Toolchain (without parser) took 5193.67 ms. Allocated memory was 250.1 MB in the beginning and 429.9 MB in the end (delta: 179.8 MB). Free memory was 205.2 MB in the beginning and 292.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 92.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,867 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 795.94 ms. Allocated memory was 250.1 MB in the beginning and 310.4 MB in the end (delta: 60.3 MB). Free memory was 205.2 MB in the beginning and 263.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.83 ms. Allocated memory is still 310.4 MB. Free memory was 263.7 MB in the beginning and 261.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,870 INFO L168 Benchmark]: Boogie Preprocessor took 30.86 ms. Allocated memory is still 310.4 MB. Free memory was 261.2 MB in the beginning and 259.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,871 INFO L168 Benchmark]: RCFGBuilder took 857.61 ms. Allocated memory is still 310.4 MB. Free memory was 259.5 MB in the beginning and 189.6 MB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,872 INFO L168 Benchmark]: TraceAbstraction took 3446.64 ms. Allocated memory was 310.4 MB in the beginning and 429.9 MB in the end (delta: 119.5 MB). Free memory was 188.7 MB in the beginning and 292.7 MB in the end (delta: -104.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:27,876 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 795.94 ms. Allocated memory was 250.1 MB in the beginning and 310.4 MB in the end (delta: 60.3 MB). Free memory was 205.2 MB in the beginning and 263.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.83 ms. Allocated memory is still 310.4 MB. Free memory was 263.7 MB in the beginning and 261.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.86 ms. Allocated memory is still 310.4 MB. Free memory was 261.2 MB in the beginning and 259.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 857.61 ms. Allocated memory is still 310.4 MB. Free memory was 259.5 MB in the beginning and 189.6 MB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3446.64 ms. Allocated memory was 310.4 MB in the beginning and 429.9 MB in the end (delta: 119.5 MB). Free memory was 188.7 MB in the beginning and 292.7 MB in the end (delta: -104.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 504 VarBasedMoverChecksPositive, 94 VarBasedMoverChecksNegative, 41 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 53 PlacesBefore, 20 PlacesAfterwards, 53 TransitionsBefore, 19 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 2268 MoverChecksTotal - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 711]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 2 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: SAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 27 SDtfs, 30 SDslu, 4 SDs, 0 SdLazy, 49 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=4, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 649 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 correct! Received shutdown request...