/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadJoinCorrectThreadId.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:27:59,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:27:59,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:27:59,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:27:59,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:27:59,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:27:59,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:27:59,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:27:59,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:27:59,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:27:59,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:27:59,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:27:59,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:27:59,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:27:59,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:27:59,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:27:59,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:27:59,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:27:59,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:27:59,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:27:59,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:27:59,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:27:59,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:27:59,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:27:59,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:27:59,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:27:59,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:27:59,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:27:59,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:27:59,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:27:59,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:27:59,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:27:59,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:27:59,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:27:59,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:27:59,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:27:59,653 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 [2021-03-11 22:27:59,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:27:59,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:27:59,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:27:59,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:27:59,674 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:27:59,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:27:59,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:27:59,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:27:59,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:27:59,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:27:59,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:27:59,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:27:59,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:27:59,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:27:59,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:27:59,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:27:59,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:27:59,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 22:27:59,910 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 22:27:59,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadJoinCorrectThreadId.c [2021-03-11 22:27:59,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e039590/ecec68224c1845d68705b712ddf67ee1/FLAGc928048ef [2021-03-11 22:28:00,366 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 22:28:00,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadJoinCorrectThreadId.c [2021-03-11 22:28:00,367 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:28:00,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e039590/ecec68224c1845d68705b712ddf67ee1/FLAGc928048ef [2021-03-11 22:28:00,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e039590/ecec68224c1845d68705b712ddf67ee1 [2021-03-11 22:28:00,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:28:00,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 22:28:00,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:00,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 22:28:00,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 22:28:00,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2a96c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00, skipping insertion in model container [2021-03-11 22:28:00,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 22:28:00,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 22:28:00,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:00,544 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 22:28:00,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:00,569 INFO L208 MainTranslator]: Completed translation [2021-03-11 22:28:00,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00 WrapperNode [2021-03-11 22:28:00,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:00,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:00,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:28:00,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:28:00,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:00,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:28:00,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:28:00,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:28:00,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (1/1) ... [2021-03-11 22:28:00,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:28:00,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:28:00,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:28:00,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:28:00,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (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 [2021-03-11 22:28:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 22:28:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2021-03-11 22:28:00,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2021-03-11 22:28:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 22:28:00,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 22:28:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:28:00,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:28:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 22:28:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 22:28:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 22:28:00,667 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:28:00,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:28:00,809 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 22:28:00,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:00 BoogieIcfgContainer [2021-03-11 22:28:00,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:28:00,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:28:00,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:28:00,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:28:00,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:28:00" (1/3) ... [2021-03-11 22:28:00,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64925568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:00, skipping insertion in model container [2021-03-11 22:28:00,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:00" (2/3) ... [2021-03-11 22:28:00,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64925568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:00, skipping insertion in model container [2021-03-11 22:28:00,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:00" (3/3) ... [2021-03-11 22:28:00,814 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadJoinCorrectThreadId.c [2021-03-11 22:28:00,818 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:28:00,820 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:28:00,820 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:28:00,836 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,837 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,838 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,838 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,838 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,838 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,838 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,838 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,839 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,840 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,840 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,840 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,840 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,840 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,840 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,841 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,842 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,844 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,844 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,847 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,847 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,847 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,848 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,848 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,848 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,848 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,848 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:00,861 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-11 22:28:00,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 22:28:00,883 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:28:00,883 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:28:00,883 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:28:00,883 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:28:00,884 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:28:00,884 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:28:00,884 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:28:00,884 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:28:00,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 128 flow [2021-03-11 22:28:00,909 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-03-11 22:28:00,909 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 22:28:00,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 51 events. 4/51 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place. [2021-03-11 22:28:00,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 128 flow [2021-03-11 22:28:00,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 89 flow [2021-03-11 22:28:00,915 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:28:00,920 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 34 transitions, 89 flow [2021-03-11 22:28:00,935 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 34 transitions, 89 flow [2021-03-11 22:28:00,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 89 flow [2021-03-11 22:28:00,946 INFO L129 PetriNetUnfolder]: 2/37 cut-off events. [2021-03-11 22:28:00,947 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 22:28:00,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 37 events. 2/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 30. Up to 5 conditions per place. [2021-03-11 22:28:00,948 INFO L116 LiptonReduction]: Number of co-enabled transitions 100 [2021-03-11 22:28:01,670 INFO L131 LiptonReduction]: Checked pairs total: 262 [2021-03-11 22:28:01,670 INFO L133 LiptonReduction]: Total number of compositions: 18 [2021-03-11 22:28:01,671 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 758 [2021-03-11 22:28:01,678 INFO L129 PetriNetUnfolder]: 2/14 cut-off events. [2021-03-11 22:28:01,679 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 22:28:01,679 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:01,679 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:28:01,679 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash 331367695, now seen corresponding path program 1 times [2021-03-11 22:28:01,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:01,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765795807] [2021-03-11 22:28:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:28:01,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:28:01,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:28:01,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 22:28:01,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:28:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:28:01,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765795807] [2021-03-11 22:28:01,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:28:01,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 22:28:01,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333668516] [2021-03-11 22:28:01,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 22:28:01,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:28:01,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 22:28:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 22:28:01,818 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2021-03-11 22:28:01,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:01,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:28:01,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2021-03-11 22:28:01,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:28:01,896 INFO L129 PetriNetUnfolder]: 11/45 cut-off events. [2021-03-11 22:28:01,897 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-11 22:28:01,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 45 events. 11/45 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 5 based on Foata normal form. 2/42 useless extension candidates. Maximal degree in co-relation 81. Up to 25 conditions per place. [2021-03-11 22:28:01,898 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 13 selfloop transitions, 6 changer transitions 0/24 dead transitions. [2021-03-11 22:28:01,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 24 transitions, 119 flow [2021-03-11 22:28:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 22:28:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 22:28:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 291 transitions. [2021-03-11 22:28:01,906 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6830985915492958 [2021-03-11 22:28:01,907 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 291 transitions. [2021-03-11 22:28:01,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 291 transitions. [2021-03-11 22:28:01,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:28:01,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 291 transitions. [2021-03-11 22:28:01,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:01,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:01,914 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:01,915 INFO L185 Difference]: Start difference. First operand has 20 places, 16 transitions, 53 flow. Second operand 6 states and 291 transitions. [2021-03-11 22:28:01,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 24 transitions, 119 flow [2021-03-11 22:28:01,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 22:28:01,918 INFO L241 Difference]: Finished difference. Result has 24 places, 20 transitions, 77 flow [2021-03-11 22:28:01,919 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2021-03-11 22:28:01,920 INFO L335 CegarLoopForPetriNet]: 20 programPoint places, 4 predicate places. [2021-03-11 22:28:01,920 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 77 flow [2021-03-11 22:28:01,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:01,920 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:01,920 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:28:01,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:28:01,920 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:01,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1388165303, now seen corresponding path program 2 times [2021-03-11 22:28:01,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:01,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555393794] [2021-03-11 22:28:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:28:01,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:28:01,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:28:01,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:28:01,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 22:28:01,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:01,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:28:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:28:01,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555393794] [2021-03-11 22:28:01,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:28:01,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 22:28:01,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439218925] [2021-03-11 22:28:01,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 22:28:01,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:28:01,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 22:28:01,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 22:28:01,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2021-03-11 22:28:01,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:01,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:28:01,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2021-03-11 22:28:01,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:28:02,095 INFO L129 PetriNetUnfolder]: 13/51 cut-off events. [2021-03-11 22:28:02,096 INFO L130 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2021-03-11 22:28:02,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 51 events. 13/51 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 1 based on Foata normal form. 3/48 useless extension candidates. Maximal degree in co-relation 85. Up to 14 conditions per place. [2021-03-11 22:28:02,097 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 16 selfloop transitions, 13 changer transitions 0/33 dead transitions. [2021-03-11 22:28:02,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 175 flow [2021-03-11 22:28:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 22:28:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 22:28:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 316 transitions. [2021-03-11 22:28:02,099 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5563380281690141 [2021-03-11 22:28:02,099 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 316 transitions. [2021-03-11 22:28:02,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 316 transitions. [2021-03-11 22:28:02,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:28:02,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 316 transitions. [2021-03-11 22:28:02,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.5) internal successors, (316), 8 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 71.0) internal successors, (639), 9 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,102 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 71.0) internal successors, (639), 9 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,102 INFO L185 Difference]: Start difference. First operand has 24 places, 20 transitions, 77 flow. Second operand 8 states and 316 transitions. [2021-03-11 22:28:02,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 175 flow [2021-03-11 22:28:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:28:02,104 INFO L241 Difference]: Finished difference. Result has 32 places, 26 transitions, 136 flow [2021-03-11 22:28:02,104 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2021-03-11 22:28:02,105 INFO L335 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2021-03-11 22:28:02,105 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 136 flow [2021-03-11 22:28:02,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,105 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:02,105 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:28:02,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:28:02,105 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:02,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:02,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1682202473, now seen corresponding path program 3 times [2021-03-11 22:28:02,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:02,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504471287] [2021-03-11 22:28:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:28:02,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:28:02,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:28:02,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 22:28:02,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 22:28:02,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:28:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:28:02,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504471287] [2021-03-11 22:28:02,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:28:02,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 22:28:02,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115609769] [2021-03-11 22:28:02,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 22:28:02,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:28:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 22:28:02,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 22:28:02,151 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2021-03-11 22:28:02,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:28:02,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2021-03-11 22:28:02,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:28:02,243 INFO L129 PetriNetUnfolder]: 9/42 cut-off events. [2021-03-11 22:28:02,243 INFO L130 PetriNetUnfolder]: For 48/50 co-relation queries the response was YES. [2021-03-11 22:28:02,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 42 events. 9/42 cut-off events. For 48/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 85. Up to 12 conditions per place. [2021-03-11 22:28:02,244 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 14 selfloop transitions, 10 changer transitions 0/28 dead transitions. [2021-03-11 22:28:02,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 181 flow [2021-03-11 22:28:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:28:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:28:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 272 transitions. [2021-03-11 22:28:02,246 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5472837022132797 [2021-03-11 22:28:02,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 272 transitions. [2021-03-11 22:28:02,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 272 transitions. [2021-03-11 22:28:02,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:28:02,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 272 transitions. [2021-03-11 22:28:02,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.857142857142854) internal successors, (272), 7 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,249 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,249 INFO L185 Difference]: Start difference. First operand has 32 places, 26 transitions, 136 flow. Second operand 7 states and 272 transitions. [2021-03-11 22:28:02,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 181 flow [2021-03-11 22:28:02,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 171 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-11 22:28:02,251 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 140 flow [2021-03-11 22:28:02,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2021-03-11 22:28:02,251 INFO L335 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2021-03-11 22:28:02,251 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 140 flow [2021-03-11 22:28:02,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,251 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:02,252 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:28:02,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 22:28:02,252 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:02,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:02,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2089156309, now seen corresponding path program 1 times [2021-03-11 22:28:02,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:02,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826520718] [2021-03-11 22:28:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:28:02,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:28:02,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:02,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:28:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:28:02,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826520718] [2021-03-11 22:28:02,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:28:02,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 22:28:02,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853430362] [2021-03-11 22:28:02,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:28:02,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:28:02,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:28:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:28:02,286 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2021-03-11 22:28:02,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:28:02,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2021-03-11 22:28:02,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:28:02,290 INFO L129 PetriNetUnfolder]: 6/36 cut-off events. [2021-03-11 22:28:02,290 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-03-11 22:28:02,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 36 events. 6/36 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2021-03-11 22:28:02,291 INFO L132 encePairwiseOnDemand]: 69/71 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2021-03-11 22:28:02,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 146 flow [2021-03-11 22:28:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:28:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:28:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2021-03-11 22:28:02,291 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8309859154929577 [2021-03-11 22:28:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2021-03-11 22:28:02,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2021-03-11 22:28:02,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:28:02,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2021-03-11 22:28:02,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,293 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 140 flow. Second operand 3 states and 177 transitions. [2021-03-11 22:28:02,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 146 flow [2021-03-11 22:28:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 132 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-11 22:28:02,294 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-03-11 22:28:02,294 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-03-11 22:28:02,294 INFO L335 CegarLoopForPetriNet]: 20 programPoint places, 14 predicate places. [2021-03-11 22:28:02,294 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2021-03-11 22:28:02,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:28:02,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 22:28:02,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:28:02 BasicIcfg [2021-03-11 22:28:02,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:28:02,298 INFO L168 Benchmark]: Toolchain (without parser) took 1894.87 ms. Allocated memory is still 350.2 MB. Free memory was 312.7 MB in the beginning and 312.2 MB in the end (delta: 550.3 kB). Peak memory consumption was 1.2 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:02,298 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory was 331.4 MB in the beginning and 331.4 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:02,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.75 ms. Allocated memory is still 350.2 MB. Free memory was 312.0 MB in the beginning and 333.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:02,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.15 ms. Allocated memory is still 350.2 MB. Free memory was 333.6 MB in the beginning and 332.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:02,299 INFO L168 Benchmark]: Boogie Preprocessor took 17.90 ms. Allocated memory is still 350.2 MB. Free memory was 332.5 MB in the beginning and 331.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:02,299 INFO L168 Benchmark]: RCFGBuilder took 197.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.5 MB in the beginning and 316.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:02,299 INFO L168 Benchmark]: TraceAbstraction took 1486.15 ms. Allocated memory is still 350.2 MB. Free memory was 315.8 MB in the beginning and 312.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:02,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory was 331.4 MB in the beginning and 331.4 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 165.75 ms. Allocated memory is still 350.2 MB. Free memory was 312.0 MB in the beginning and 333.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.15 ms. Allocated memory is still 350.2 MB. Free memory was 333.6 MB in the beginning and 332.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.90 ms. Allocated memory is still 350.2 MB. Free memory was 332.5 MB in the beginning and 331.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 197.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.5 MB in the beginning and 316.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1486.15 ms. Allocated memory is still 350.2 MB. Free memory was 315.8 MB in the beginning and 312.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 735.5ms, 38 PlacesBefore, 20 PlacesAfterwards, 34 TransitionsBefore, 16 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 262 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 252, positive: 239, positive conditional: 0, positive unconditional: 239, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 84, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 84, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 252, positive: 160, positive conditional: 0, positive unconditional: 160, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 84, unknown conditional: 0, unknown unconditional: 84] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1414.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 340.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 791.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 51 SDslu, 21 SDs, 0 SdLazy, 110 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 162.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.3ms SsaConstructionTime, 39.1ms SatisfiabilityAnalysisTime, 152.5ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...