/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:27:28,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:27:28,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:27:28,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:27:28,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:27:28,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:27:28,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:27:28,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:27:28,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:27:28,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:27:28,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:27:28,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:27:28,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:27:28,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:27:28,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:27:28,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:27:28,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:27:28,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:27:28,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:27:28,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:27:28,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:27:28,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:27:28,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:27:28,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:27:28,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 22:27:28,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 22:27:28,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 22:27:28,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 22:27:28,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 22:27:28,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 22:27:28,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 22:27:28,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 22:27:28,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 22:27:28,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 22:27:28,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 22:27:28,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 22:27:28,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 22:27:28,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 22:27:28,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:27:28,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:27:28,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:27:28,703 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-25 22:27:28,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:27:28,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:27:28,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:27:28,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:27:28,730 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:27:28,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:27:28,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:27:28,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:27:28,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:27:28,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:27:28,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:27:28,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:27:28,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:27:28,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:27:28,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:27:28,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:27:28,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:27:28,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:27:28,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:27:28,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:27:28,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:27:28,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:27:28,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:27:28,734 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:27:28,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:27:29,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:27:29,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:27:29,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 22:27:29,025 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 22:27:29,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-03-25 22:27:29,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26441827b/73267663068f4ebea6cc8d179f03c3a9/FLAGc39770f1d [2021-03-25 22:27:29,502 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 22:27:29,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-03-25 22:27:29,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26441827b/73267663068f4ebea6cc8d179f03c3a9/FLAGc39770f1d [2021-03-25 22:27:29,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26441827b/73267663068f4ebea6cc8d179f03c3a9 [2021-03-25 22:27:29,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:27:29,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 22:27:29,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 22:27:29,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 22:27:29,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 22:27:29,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:27:29" (1/1) ... [2021-03-25 22:27:29,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e14a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:29, skipping insertion in model container [2021-03-25 22:27:29,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:27:29" (1/1) ... [2021-03-25 22:27:29,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 22:27:29,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 22:27:30,153 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2021-03-25 22:27:30,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:27:30,170 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 22:27:30,202 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2021-03-25 22:27:30,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:27:30,256 INFO L208 MainTranslator]: Completed translation [2021-03-25 22:27:30,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30 WrapperNode [2021-03-25 22:27:30,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 22:27:30,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:27:30,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:27:30,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:27:30,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:27:30,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:27:30,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:27:30,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:27:30,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (1/1) ... [2021-03-25 22:27:30,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:27:30,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:27:30,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:27:30,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:27:30,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (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 [2021-03-25 22:27:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 22:27:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 22:27:30,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 22:27:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 22:27:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 22:27:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 22:27:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 22:27:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 22:27:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 22:27:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 22:27:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 22:27:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 22:27:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:27:30,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:27:30,422 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 22:27:30,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:27:30,729 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 22:27:30,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:27:30 BoogieIcfgContainer [2021-03-25 22:27:30,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:27:30,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:27:30,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:27:30,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:27:30,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 10:27:29" (1/3) ... [2021-03-25 22:27:30,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afe1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:27:30, skipping insertion in model container [2021-03-25 22:27:30,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:27:30" (2/3) ... [2021-03-25 22:27:30,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afe1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:27:30, skipping insertion in model container [2021-03-25 22:27:30,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:27:30" (3/3) ... [2021-03-25 22:27:30,736 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-03-25 22:27:30,740 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:27:30,743 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 22:27:30,744 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:27:30,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,775 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,775 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,780 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,780 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,782 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,782 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:27:30,792 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-25 22:27:30,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 22:27:30,820 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:27:30,821 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:27:30,821 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:27:30,821 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:27:30,821 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:27:30,821 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:27:30,821 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:27:30,821 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:27:30,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2021-03-25 22:27:30,854 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2021-03-25 22:27:30,855 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 22:27:30,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 6/91 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2021-03-25 22:27:30,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 208 flow [2021-03-25 22:27:30,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2021-03-25 22:27:30,861 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:27:30,870 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-25 22:27:30,873 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-25 22:27:30,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2021-03-25 22:27:30,883 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-03-25 22:27:30,884 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:27:30,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 67 events. 2/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2021-03-25 22:27:30,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 1008 [2021-03-25 22:27:32,154 INFO L154 LiptonReduction]: Checked pairs total: 1277 [2021-03-25 22:27:32,155 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-25 22:27:32,157 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1296 [2021-03-25 22:27:32,172 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 22:27:32,172 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:27:32,172 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:27:32,173 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:27:32,173 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:27:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:27:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash -240498527, now seen corresponding path program 1 times [2021-03-25 22:27:32,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:27:32,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138781189] [2021-03-25 22:27:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:27:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:27:32,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:32,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:27:32,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:32,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:27:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:27:32,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138781189] [2021-03-25 22:27:32,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:27:32,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:27:32,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012385328] [2021-03-25 22:27:32,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:27:32,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:27:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:27:32,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:27:32,367 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 123 [2021-03-25 22:27:32,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-25 22:27:32,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:27:32,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 123 [2021-03-25 22:27:32,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:27:32,398 INFO L129 PetriNetUnfolder]: 15/72 cut-off events. [2021-03-25 22:27:32,399 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 22:27:32,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 72 events. 15/72 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 3 based on Foata normal form. 4/69 useless extension candidates. Maximal degree in co-relation 101. Up to 24 conditions per place. [2021-03-25 22:27:32,401 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 6 selfloop transitions, 3 changer transitions 2/32 dead transitions. [2021-03-25 22:27:32,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 105 flow [2021-03-25 22:27:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:27:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:27:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2021-03-25 22:27:32,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8726287262872628 [2021-03-25 22:27:32,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2021-03-25 22:27:32,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2021-03-25 22:27:32,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:27:32,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2021-03-25 22:27:32,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2021-03-25 22:27:32,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-25 22:27:32,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-25 22:27:32,426 INFO L185 Difference]: Start difference. First operand has 37 places, 30 transitions, 81 flow. Second operand 3 states and 322 transitions. [2021-03-25 22:27:32,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 105 flow [2021-03-25 22:27:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 92 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 22:27:32,431 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 81 flow [2021-03-25 22:27:32,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-03-25 22:27:32,433 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2021-03-25 22:27:32,433 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:27:32,433 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 29 transitions, 81 flow [2021-03-25 22:27:32,434 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 29 transitions, 81 flow [2021-03-25 22:27:32,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 81 flow [2021-03-25 22:27:32,440 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 22:27:32,440 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 22:27:32,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 43 events. 5/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 1 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 44. Up to 10 conditions per place. [2021-03-25 22:27:32,441 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-25 22:27:33,097 INFO L154 LiptonReduction]: Checked pairs total: 366 [2021-03-25 22:27:33,097 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:27:33,098 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 665 [2021-03-25 22:27:33,099 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 75 flow [2021-03-25 22:27:33,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-25 22:27:33,099 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:27:33,099 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:27:33,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:27:33,100 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:27:33,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:27:33,100 INFO L82 PathProgramCache]: Analyzing trace with hash 809142188, now seen corresponding path program 1 times [2021-03-25 22:27:33,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:27:33,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947792965] [2021-03-25 22:27:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:27:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:27:33,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:33,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:27:33,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:27:33,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:33,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:27:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:27:33,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947792965] [2021-03-25 22:27:33,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:27:33,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:27:33,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273928280] [2021-03-25 22:27:33,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:27:33,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:27:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:27:33,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:27:33,141 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 126 [2021-03-25 22:27:33,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 22:27:33,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:27:33,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 126 [2021-03-25 22:27:33,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:27:33,164 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-25 22:27:33,164 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 22:27:33,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 42 events. 2/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 0 based on Foata normal form. 9/50 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2021-03-25 22:27:33,165 INFO L132 encePairwiseOnDemand]: 121/126 looper letters, 1 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-25 22:27:33,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 87 flow [2021-03-25 22:27:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:27:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:27:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2021-03-25 22:27:33,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-03-25 22:27:33,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2021-03-25 22:27:33,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2021-03-25 22:27:33,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:27:33,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2021-03-25 22:27:33,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2021-03-25 22:27:33,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 22:27:33,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 22:27:33,174 INFO L185 Difference]: Start difference. First operand has 30 places, 26 transitions, 75 flow. Second operand 3 states and 273 transitions. [2021-03-25 22:27:33,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 87 flow [2021-03-25 22:27:33,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 22:27:33,176 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 82 flow [2021-03-25 22:27:33,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 22:27:33,176 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2021-03-25 22:27:33,176 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:27:33,177 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 82 flow [2021-03-25 22:27:33,177 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 82 flow [2021-03-25 22:27:33,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 82 flow [2021-03-25 22:27:33,191 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-25 22:27:33,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:27:33,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 54. Up to 8 conditions per place. [2021-03-25 22:27:33,192 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 22:27:33,757 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-25 22:27:33,896 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-25 22:27:34,228 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-25 22:27:34,356 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-25 22:27:34,360 INFO L154 LiptonReduction]: Checked pairs total: 45 [2021-03-25 22:27:34,360 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 22:27:34,360 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1184 [2021-03-25 22:27:34,361 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 78 flow [2021-03-25 22:27:34,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 22:27:34,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:27:34,361 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:27:34,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:27:34,362 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:27:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:27:34,362 INFO L82 PathProgramCache]: Analyzing trace with hash -441610140, now seen corresponding path program 1 times [2021-03-25 22:27:34,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:27:34,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970361384] [2021-03-25 22:27:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:27:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:27:34,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:34,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:27:34,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:34,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:27:34,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:34,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:27:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:27:34,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970361384] [2021-03-25 22:27:34,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:27:34,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:27:34,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157702790] [2021-03-25 22:27:34,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:27:34,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:27:34,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:27:34,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:27:34,466 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2021-03-25 22:27:34,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-25 22:27:34,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:27:34,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2021-03-25 22:27:34,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:27:34,490 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-03-25 22:27:34,490 INFO L130 PetriNetUnfolder]: For 22/48 co-relation queries the response was YES. [2021-03-25 22:27:34,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 30 events. 2/30 cut-off events. For 22/48 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 67 event pairs, 0 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 22:27:34,491 INFO L132 encePairwiseOnDemand]: 128/134 looper letters, 4 selfloop transitions, 5 changer transitions 2/24 dead transitions. [2021-03-25 22:27:34,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 112 flow [2021-03-25 22:27:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:27:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:27:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2021-03-25 22:27:34,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7985074626865671 [2021-03-25 22:27:34,493 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2021-03-25 22:27:34,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2021-03-25 22:27:34,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:27:34,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2021-03-25 22:27:34,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2021-03-25 22:27:34,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2021-03-25 22:27:34,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2021-03-25 22:27:34,495 INFO L185 Difference]: Start difference. First operand has 26 places, 21 transitions, 78 flow. Second operand 4 states and 428 transitions. [2021-03-25 22:27:34,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 112 flow [2021-03-25 22:27:34,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 22:27:34,502 INFO L241 Difference]: Finished difference. Result has 29 places, 21 transitions, 85 flow [2021-03-25 22:27:34,502 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2021-03-25 22:27:34,502 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -8 predicate places. [2021-03-25 22:27:34,502 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:27:34,503 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 21 transitions, 85 flow [2021-03-25 22:27:34,507 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 21 transitions, 85 flow [2021-03-25 22:27:34,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 21 transitions, 85 flow [2021-03-25 22:27:34,513 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 22:27:34,513 INFO L130 PetriNetUnfolder]: For 16/23 co-relation queries the response was YES. [2021-03-25 22:27:34,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 2/28 cut-off events. For 16/23 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 57 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 7 conditions per place. [2021-03-25 22:27:34,514 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 22:27:34,675 INFO L154 LiptonReduction]: Checked pairs total: 17 [2021-03-25 22:27:34,675 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:27:34,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 173 [2021-03-25 22:27:34,679 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 85 flow [2021-03-25 22:27:34,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-25 22:27:34,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:27:34,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:27:34,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 22:27:34,679 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:27:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:27:34,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1055133157, now seen corresponding path program 1 times [2021-03-25 22:27:34,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:27:34,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391256590] [2021-03-25 22:27:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:27:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:27:34,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:34,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:27:34,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:34,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:27:34,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:27:34,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:27:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:27:34,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391256590] [2021-03-25 22:27:34,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:27:34,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:27:34,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916132230] [2021-03-25 22:27:34,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:27:34,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:27:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:27:34,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:27:34,733 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 137 [2021-03-25 22:27:34,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 22:27:34,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:27:34,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 137 [2021-03-25 22:27:34,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:27:34,762 INFO L129 PetriNetUnfolder]: 2/25 cut-off events. [2021-03-25 22:27:34,763 INFO L130 PetriNetUnfolder]: For 48/99 co-relation queries the response was YES. [2021-03-25 22:27:34,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 25 events. 2/25 cut-off events. For 48/99 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 37 event pairs, 0 based on Foata normal form. 9/33 useless extension candidates. Maximal degree in co-relation 44. Up to 7 conditions per place. [2021-03-25 22:27:34,763 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 5 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2021-03-25 22:27:34,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 116 flow [2021-03-25 22:27:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:27:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:27:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2021-03-25 22:27:34,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.762043795620438 [2021-03-25 22:27:34,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2021-03-25 22:27:34,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2021-03-25 22:27:34,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:27:34,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2021-03-25 22:27:34,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2021-03-25 22:27:34,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-25 22:27:34,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-25 22:27:34,770 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 85 flow. Second operand 5 states and 522 transitions. [2021-03-25 22:27:34,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 116 flow [2021-03-25 22:27:34,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 111 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 22:27:34,771 INFO L241 Difference]: Finished difference. Result has 33 places, 20 transitions, 97 flow [2021-03-25 22:27:34,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2021-03-25 22:27:34,771 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2021-03-25 22:27:34,771 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:27:34,771 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 20 transitions, 97 flow [2021-03-25 22:27:34,772 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 20 transitions, 97 flow [2021-03-25 22:27:34,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 20 transitions, 97 flow [2021-03-25 22:27:34,774 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-25 22:27:34,774 INFO L130 PetriNetUnfolder]: For 31/45 co-relation queries the response was YES. [2021-03-25 22:27:34,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 2/24 cut-off events. For 31/45 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 41. Up to 5 conditions per place. [2021-03-25 22:27:34,774 INFO L142 LiptonReduction]: Number of co-enabled transitions 74 [2021-03-25 22:27:34,826 INFO L154 LiptonReduction]: Checked pairs total: 5 [2021-03-25 22:27:34,827 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:27:34,827 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-25 22:27:34,828 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 95 flow [2021-03-25 22:27:34,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 22:27:34,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:27:34,834 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:27:34,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 22:27:34,834 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:27:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:27:34,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1734884300, now seen corresponding path program 1 times [2021-03-25 22:27:34,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:27:34,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78031852] [2021-03-25 22:27:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:27:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 22:27:34,869 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 22:27:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 22:27:34,890 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 22:27:34,932 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 22:27:34,932 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 22:27:34,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 22:27:34,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 10:27:34 BasicIcfg [2021-03-25 22:27:34,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 22:27:34,950 INFO L168 Benchmark]: Toolchain (without parser) took 5106.45 ms. Allocated memory was 329.3 MB in the beginning and 446.7 MB in the end (delta: 117.4 MB). Free memory was 293.1 MB in the beginning and 316.2 MB in the end (delta: -23.2 MB). Peak memory consumption was 97.7 MB. Max. memory is 16.0 GB. [2021-03-25 22:27:34,950 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 329.3 MB. Free memory was 310.7 MB in the beginning and 310.7 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:27:34,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.96 ms. Allocated memory is still 329.3 MB. Free memory was 292.8 MB in the beginning and 292.7 MB in the end (delta: 158.3 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.0 GB. [2021-03-25 22:27:34,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.60 ms. Allocated memory is still 329.3 MB. Free memory was 292.7 MB in the beginning and 291.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:27:34,950 INFO L168 Benchmark]: Boogie Preprocessor took 14.21 ms. Allocated memory is still 329.3 MB. Free memory was 291.6 MB in the beginning and 289.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:27:34,951 INFO L168 Benchmark]: RCFGBuilder took 414.75 ms. Allocated memory is still 329.3 MB. Free memory was 289.5 MB in the beginning and 265.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 22:27:34,951 INFO L168 Benchmark]: TraceAbstraction took 4217.26 ms. Allocated memory was 329.3 MB in the beginning and 446.7 MB in the end (delta: 117.4 MB). Free memory was 264.4 MB in the beginning and 316.2 MB in the end (delta: -51.9 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.0 GB. [2021-03-25 22:27:34,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 329.3 MB. Free memory was 310.7 MB in the beginning and 310.7 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 413.96 ms. Allocated memory is still 329.3 MB. Free memory was 292.8 MB in the beginning and 292.7 MB in the end (delta: 158.3 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.60 ms. Allocated memory is still 329.3 MB. Free memory was 292.7 MB in the beginning and 291.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.21 ms. Allocated memory is still 329.3 MB. Free memory was 291.6 MB in the beginning and 289.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 414.75 ms. Allocated memory is still 329.3 MB. Free memory was 289.5 MB in the beginning and 265.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4217.26 ms. Allocated memory was 329.3 MB in the beginning and 446.7 MB in the end (delta: 117.4 MB). Free memory was 264.4 MB in the beginning and 316.2 MB in the end (delta: -51.9 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1282.5ms, 72 PlacesBefore, 37 PlacesAfterwards, 65 TransitionsBefore, 30 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 1277 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 790, positive: 751, positive conditional: 751, positive unconditional: 0, negative: 39, negative conditional: 39, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 626, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 626, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 626, positive: 583, positive conditional: 0, positive unconditional: 583, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 126, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 790, positive: 150, positive conditional: 150, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 626, unknown conditional: 626, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 44, Positive conditional cache size: 44, Positive unconditional cache size: 0, Negative cache size: 8, Negative conditional cache size: 8, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 663.8ms, 34 PlacesBefore, 30 PlacesAfterwards, 29 TransitionsBefore, 26 TransitionsAfterwards, 208 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 366 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 138, positive: 111, positive conditional: 111, positive unconditional: 0, negative: 27, negative conditional: 27, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 28, positive: 22, positive conditional: 6, positive unconditional: 16, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, positive: 22, positive conditional: 6, positive unconditional: 16, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 32, positive: 9, positive conditional: 5, positive unconditional: 3, negative: 23, negative conditional: 6, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 138, positive: 89, positive conditional: 89, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 28, unknown conditional: 28, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 14, Negative conditional cache size: 14, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1183.0ms, 31 PlacesBefore, 26 PlacesAfterwards, 26 TransitionsBefore, 21 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 45 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 45, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 7, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 7, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 45, positive: 19, positive conditional: 19, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 167.9ms, 29 PlacesBefore, 28 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.3ms, 33 PlacesBefore, 31 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 74 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 5 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={10:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L707] 1 data++ [L709] 1 return 0; [L714] 2 data+=2 [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4115.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 196.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1345.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 8 SDslu, 3 SDs, 0 SdLazy, 55 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 15, 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: 10.1ms SsaConstructionTime, 101.1ms SatisfiabilityAnalysisTime, 166.7ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 101 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 incorrect! Received shutdown request...