/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:43:59,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:43:59,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:43:59,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:43:59,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:43:59,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:43:59,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:43:59,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:43:59,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:43:59,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:43:59,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:43:59,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:43:59,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:43:59,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:43:59,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:43:59,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:43:59,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:43:59,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:43:59,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:43:59,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:43:59,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:43:59,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:43:59,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:43:59,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:43:59,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:43:59,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:43:59,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:43:59,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:43:59,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:43:59,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:43:59,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:43:59,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:43:59,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:43:59,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:43:59,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:43:59,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:43:59,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:43:59,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:43:59,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:43:59,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:43:59,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:43:59,611 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-VariableLbe.epf [2023-01-28 09:43:59,625 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:43:59,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:43:59,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:43:59,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:43:59,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:43:59,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:43:59,626 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:43:59,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:43:59,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:43:59,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:59,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:43:59,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:43:59,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:43:59,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:43:59,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:43:59,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:43:59,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:43:59,629 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:43:59,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:43:59,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:43:59,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:43:59,807 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:43:59,808 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:43:59,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-01-28 09:44:00,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:44:00,987 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:44:00,987 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-01-28 09:44:00,993 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5f3f0f8/1d4b536691174540b3f814968882c396/FLAG212db28f4 [2023-01-28 09:44:01,005 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5f3f0f8/1d4b536691174540b3f814968882c396 [2023-01-28 09:44:01,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:44:01,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:44:01,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:44:01,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:44:01,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:44:01,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bf3b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01, skipping insertion in model container [2023-01-28 09:44:01,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:44:01,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:44:01,157 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-01-28 09:44:01,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:44:01,168 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:44:01,185 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-01-28 09:44:01,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:44:01,192 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:44:01,192 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:44:01,198 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:44:01,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01 WrapperNode [2023-01-28 09:44:01,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:44:01,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:44:01,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:44:01,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:44:01,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,231 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2023-01-28 09:44:01,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:44:01,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:44:01,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:44:01,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:44:01,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:44:01,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:44:01,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:44:01,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:44:01,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (1/1) ... [2023-01-28 09:44:01,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:44:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:01,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:44:01,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:44:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:44:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:44:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:44:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:44:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:44:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:44:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:44:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:44:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:44:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:44:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:44:01,397 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:44:01,517 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:44:01,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:44:01,768 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:44:01,843 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:44:01,843 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 09:44:01,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:44:01 BoogieIcfgContainer [2023-01-28 09:44:01,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:44:01,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:44:01,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:44:01,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:44:01,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:44:01" (1/3) ... [2023-01-28 09:44:01,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716296e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:44:01, skipping insertion in model container [2023-01-28 09:44:01,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:44:01" (2/3) ... [2023-01-28 09:44:01,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716296e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:44:01, skipping insertion in model container [2023-01-28 09:44:01,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:44:01" (3/3) ... [2023-01-28 09:44:01,869 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-01-28 09:44:01,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:44:01,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:44:01,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:44:01,931 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:44:01,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2023-01-28 09:44:02,029 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2023-01-28 09:44:02,030 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:44:02,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-28 09:44:02,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 242 flow [2023-01-28 09:44:02,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 96 transitions, 210 flow [2023-01-28 09:44:02,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:44:02,044 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 96 transitions, 210 flow [2023-01-28 09:44:02,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 96 transitions, 210 flow [2023-01-28 09:44:02,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 96 transitions, 210 flow [2023-01-28 09:44:02,071 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2023-01-28 09:44:02,071 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:44:02,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 7/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-28 09:44:02,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 1370 [2023-01-28 09:44:04,659 INFO L134 LiptonReduction]: Checked pairs total: 1979 [2023-01-28 09:44:04,659 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-01-28 09:44:04,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:44:04,675 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58cfdb89, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:44:04,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:44:04,680 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-01-28 09:44:04,680 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:44:04,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:04,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:04,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:04,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash -771544553, now seen corresponding path program 1 times [2023-01-28 09:44:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:04,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627951764] [2023-01-28 09:44:04,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:04,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627951764] [2023-01-28 09:44:05,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627951764] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:05,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:05,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:44:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123274553] [2023-01-28 09:44:05,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:05,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:05,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:05,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:05,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-28 09:44:05,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2023-01-28 09:44:05,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:05,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-28 09:44:05,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:05,411 INFO L130 PetriNetUnfolder]: 433/696 cut-off events. [2023-01-28 09:44:05,411 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-01-28 09:44:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 696 events. 433/696 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2628 event pairs, 74 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 1212. Up to 359 conditions per place. [2023-01-28 09:44:05,418 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 55 selfloop transitions, 5 changer transitions 22/82 dead transitions. [2023-01-28 09:44:05,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 82 transitions, 382 flow [2023-01-28 09:44:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:44:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:44:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions. [2023-01-28 09:44:05,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2023-01-28 09:44:05,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions. [2023-01-28 09:44:05,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions. [2023-01-28 09:44:05,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:05,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions. [2023-01-28 09:44:05,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 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) [2023-01-28 09:44:05,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-01-28 09:44:05,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-01-28 09:44:05,450 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 62 flow. Second operand 7 states and 665 transitions. [2023-01-28 09:44:05,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 82 transitions, 382 flow [2023-01-28 09:44:05,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 82 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:44:05,456 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2023-01-28 09:44:05,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-28 09:44:05,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 09:44:05,461 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2023-01-28 09:44:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2023-01-28 09:44:05,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:05,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:44:05,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:05,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1549483573, now seen corresponding path program 2 times [2023-01-28 09:44:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705469594] [2023-01-28 09:44:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705469594] [2023-01-28 09:44:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705469594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:05,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:44:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146312776] [2023-01-28 09:44:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:44:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:44:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:44:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-01-28 09:44:05,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-01-28 09:44:05,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:05,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-01-28 09:44:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:05,875 INFO L130 PetriNetUnfolder]: 260/443 cut-off events. [2023-01-28 09:44:05,876 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-01-28 09:44:05,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 443 events. 260/443 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1576 event pairs, 21 based on Foata normal form. 32/475 useless extension candidates. Maximal degree in co-relation 940. Up to 239 conditions per place. [2023-01-28 09:44:05,879 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-01-28 09:44:05,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 280 flow [2023-01-28 09:44:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:44:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:44:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-01-28 09:44:05,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066489361702128 [2023-01-28 09:44:05,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-01-28 09:44:05,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-01-28 09:44:05,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:05,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-01-28 09:44:05,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2023-01-28 09:44:05,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2023-01-28 09:44:05,883 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2023-01-28 09:44:05,883 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 4 states and 381 transitions. [2023-01-28 09:44:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 280 flow [2023-01-28 09:44:05,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 265 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:44:05,885 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 124 flow [2023-01-28 09:44:05,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-28 09:44:05,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 09:44:05,886 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 124 flow [2023-01-28 09:44:05,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-01-28 09:44:05,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:05,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:05,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:44:05,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:05,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1618678763, now seen corresponding path program 3 times [2023-01-28 09:44:05,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:05,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282932098] [2023-01-28 09:44:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:05,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282932098] [2023-01-28 09:44:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282932098] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:06,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:06,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:44:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849250461] [2023-01-28 09:44:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:06,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:44:06,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:44:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:44:06,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-01-28 09:44:06,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-01-28 09:44:06,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:06,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-01-28 09:44:06,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:06,159 INFO L130 PetriNetUnfolder]: 215/378 cut-off events. [2023-01-28 09:44:06,160 INFO L131 PetriNetUnfolder]: For 443/443 co-relation queries the response was YES. [2023-01-28 09:44:06,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 378 events. 215/378 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1264 event pairs, 37 based on Foata normal form. 20/398 useless extension candidates. Maximal degree in co-relation 907. Up to 229 conditions per place. [2023-01-28 09:44:06,161 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 36 selfloop transitions, 7 changer transitions 2/45 dead transitions. [2023-01-28 09:44:06,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 293 flow [2023-01-28 09:44:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:44:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:44:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-01-28 09:44:06,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013297872340425 [2023-01-28 09:44:06,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-01-28 09:44:06,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-01-28 09:44:06,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:06,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-01-28 09:44:06,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-01-28 09:44:06,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2023-01-28 09:44:06,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2023-01-28 09:44:06,165 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 124 flow. Second operand 4 states and 377 transitions. [2023-01-28 09:44:06,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 293 flow [2023-01-28 09:44:06,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:44:06,167 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 156 flow [2023-01-28 09:44:06,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-01-28 09:44:06,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-28 09:44:06,168 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 156 flow [2023-01-28 09:44:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-01-28 09:44:06,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:06,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:44:06,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:06,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 994832979, now seen corresponding path program 4 times [2023-01-28 09:44:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939372183] [2023-01-28 09:44:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939372183] [2023-01-28 09:44:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939372183] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:06,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:06,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:44:06,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272335444] [2023-01-28 09:44:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:06,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:06,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:06,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-01-28 09:44:06,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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) [2023-01-28 09:44:06,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:06,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-01-28 09:44:06,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:06,391 INFO L130 PetriNetUnfolder]: 221/380 cut-off events. [2023-01-28 09:44:06,391 INFO L131 PetriNetUnfolder]: For 722/722 co-relation queries the response was YES. [2023-01-28 09:44:06,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 380 events. 221/380 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1256 event pairs, 25 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 901. Up to 152 conditions per place. [2023-01-28 09:44:06,393 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 42 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-01-28 09:44:06,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 364 flow [2023-01-28 09:44:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:44:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:44:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2023-01-28 09:44:06,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 09:44:06,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2023-01-28 09:44:06,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2023-01-28 09:44:06,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:06,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2023-01-28 09:44:06,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2023-01-28 09:44:06,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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) [2023-01-28 09:44:06,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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) [2023-01-28 09:44:06,398 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 156 flow. Second operand 5 states and 470 transitions. [2023-01-28 09:44:06,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 364 flow [2023-01-28 09:44:06,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 350 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 09:44:06,400 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 202 flow [2023-01-28 09:44:06,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-28 09:44:06,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-28 09:44:06,401 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 202 flow [2023-01-28 09:44:06,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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) [2023-01-28 09:44:06,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:06,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:44:06,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:06,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1308365975, now seen corresponding path program 5 times [2023-01-28 09:44:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475642748] [2023-01-28 09:44:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:06,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475642748] [2023-01-28 09:44:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475642748] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:06,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:44:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813078834] [2023-01-28 09:44:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:06,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:06,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:06,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-28 09:44:06,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2023-01-28 09:44:06,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:06,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-28 09:44:06,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:06,666 INFO L130 PetriNetUnfolder]: 211/348 cut-off events. [2023-01-28 09:44:06,666 INFO L131 PetriNetUnfolder]: For 949/949 co-relation queries the response was YES. [2023-01-28 09:44:06,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 348 events. 211/348 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1092 event pairs, 25 based on Foata normal form. 10/358 useless extension candidates. Maximal degree in co-relation 981. Up to 246 conditions per place. [2023-01-28 09:44:06,668 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 34 selfloop transitions, 3 changer transitions 18/55 dead transitions. [2023-01-28 09:44:06,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 416 flow [2023-01-28 09:44:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:44:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:44:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2023-01-28 09:44:06,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.479483282674772 [2023-01-28 09:44:06,669 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2023-01-28 09:44:06,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2023-01-28 09:44:06,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:06,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2023-01-28 09:44:06,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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) [2023-01-28 09:44:06,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-01-28 09:44:06,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-01-28 09:44:06,673 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 202 flow. Second operand 7 states and 631 transitions. [2023-01-28 09:44:06,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 416 flow [2023-01-28 09:44:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:44:06,676 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 168 flow [2023-01-28 09:44:06,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2023-01-28 09:44:06,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2023-01-28 09:44:06,678 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 168 flow [2023-01-28 09:44:06,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2023-01-28 09:44:06,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:06,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:06,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:44:06,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:06,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash 639520331, now seen corresponding path program 1 times [2023-01-28 09:44:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:06,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786078918] [2023-01-28 09:44:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:06,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:06,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786078918] [2023-01-28 09:44:06,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786078918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:06,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:06,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:06,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296487881] [2023-01-28 09:44:06,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:06,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:06,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:06,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-28 09:44:06,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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) [2023-01-28 09:44:06,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:06,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-28 09:44:06,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:07,011 INFO L130 PetriNetUnfolder]: 324/523 cut-off events. [2023-01-28 09:44:07,011 INFO L131 PetriNetUnfolder]: For 1303/1303 co-relation queries the response was YES. [2023-01-28 09:44:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 523 events. 324/523 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1804 event pairs, 14 based on Foata normal form. 16/539 useless extension candidates. Maximal degree in co-relation 2014. Up to 187 conditions per place. [2023-01-28 09:44:07,014 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 66 selfloop transitions, 37 changer transitions 0/103 dead transitions. [2023-01-28 09:44:07,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 103 transitions, 808 flow [2023-01-28 09:44:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:44:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:44:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 836 transitions. [2023-01-28 09:44:07,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2023-01-28 09:44:07,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 836 transitions. [2023-01-28 09:44:07,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 836 transitions. [2023-01-28 09:44:07,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:07,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 836 transitions. [2023-01-28 09:44:07,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.88888888888889) internal successors, (836), 9 states have internal predecessors, (836), 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) [2023-01-28 09:44:07,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2023-01-28 09:44:07,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2023-01-28 09:44:07,020 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 168 flow. Second operand 9 states and 836 transitions. [2023-01-28 09:44:07,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 103 transitions, 808 flow [2023-01-28 09:44:07,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 103 transitions, 752 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-28 09:44:07,025 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 543 flow [2023-01-28 09:44:07,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=543, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-01-28 09:44:07,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2023-01-28 09:44:07,027 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 543 flow [2023-01-28 09:44:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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) [2023-01-28 09:44:07,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:07,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:07,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:44:07,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:07,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2078671299, now seen corresponding path program 2 times [2023-01-28 09:44:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:07,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12790213] [2023-01-28 09:44:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12790213] [2023-01-28 09:44:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12790213] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105992986] [2023-01-28 09:44:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:07,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-28 09:44:07,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 543 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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) [2023-01-28 09:44:07,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:07,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-28 09:44:07,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:07,403 INFO L130 PetriNetUnfolder]: 474/831 cut-off events. [2023-01-28 09:44:07,403 INFO L131 PetriNetUnfolder]: For 5344/5344 co-relation queries the response was YES. [2023-01-28 09:44:07,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4420 conditions, 831 events. 474/831 cut-off events. For 5344/5344 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3449 event pairs, 35 based on Foata normal form. 20/851 useless extension candidates. Maximal degree in co-relation 3409. Up to 299 conditions per place. [2023-01-28 09:44:07,409 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 105 selfloop transitions, 63 changer transitions 0/168 dead transitions. [2023-01-28 09:44:07,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 168 transitions, 1712 flow [2023-01-28 09:44:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:44:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:44:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 850 transitions. [2023-01-28 09:44:07,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023640661938534 [2023-01-28 09:44:07,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 850 transitions. [2023-01-28 09:44:07,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 850 transitions. [2023-01-28 09:44:07,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:07,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 850 transitions. [2023-01-28 09:44:07,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 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) [2023-01-28 09:44:07,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2023-01-28 09:44:07,414 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2023-01-28 09:44:07,415 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 543 flow. Second operand 9 states and 850 transitions. [2023-01-28 09:44:07,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 168 transitions, 1712 flow [2023-01-28 09:44:07,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 168 transitions, 1694 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-28 09:44:07,424 INFO L231 Difference]: Finished difference. Result has 71 places, 106 transitions, 1309 flow [2023-01-28 09:44:07,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=71, PETRI_TRANSITIONS=106} [2023-01-28 09:44:07,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-01-28 09:44:07,425 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 106 transitions, 1309 flow [2023-01-28 09:44:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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) [2023-01-28 09:44:07,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:07,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:07,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:44:07,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:07,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:07,426 INFO L85 PathProgramCache]: Analyzing trace with hash -37646305, now seen corresponding path program 3 times [2023-01-28 09:44:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:07,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063932813] [2023-01-28 09:44:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063932813] [2023-01-28 09:44:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063932813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:07,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037375149] [2023-01-28 09:44:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:07,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:07,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:07,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-28 09:44:07,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 106 transitions, 1309 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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) [2023-01-28 09:44:07,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:07,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-28 09:44:07,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:07,766 INFO L130 PetriNetUnfolder]: 553/944 cut-off events. [2023-01-28 09:44:07,766 INFO L131 PetriNetUnfolder]: For 10667/10667 co-relation queries the response was YES. [2023-01-28 09:44:07,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 944 events. 553/944 cut-off events. For 10667/10667 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3911 event pairs, 4 based on Foata normal form. 36/980 useless extension candidates. Maximal degree in co-relation 5161. Up to 458 conditions per place. [2023-01-28 09:44:07,773 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 100 selfloop transitions, 42 changer transitions 40/182 dead transitions. [2023-01-28 09:44:07,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 182 transitions, 2517 flow [2023-01-28 09:44:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:44:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:44:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 826 transitions. [2023-01-28 09:44:07,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48817966903073284 [2023-01-28 09:44:07,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 826 transitions. [2023-01-28 09:44:07,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 826 transitions. [2023-01-28 09:44:07,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:07,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 826 transitions. [2023-01-28 09:44:07,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 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) [2023-01-28 09:44:07,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2023-01-28 09:44:07,780 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2023-01-28 09:44:07,780 INFO L175 Difference]: Start difference. First operand has 71 places, 106 transitions, 1309 flow. Second operand 9 states and 826 transitions. [2023-01-28 09:44:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 182 transitions, 2517 flow [2023-01-28 09:44:07,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 182 transitions, 2387 flow, removed 65 selfloop flow, removed 0 redundant places. [2023-01-28 09:44:07,803 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 1459 flow [2023-01-28 09:44:07,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1459, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2023-01-28 09:44:07,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-01-28 09:44:07,804 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 1459 flow [2023-01-28 09:44:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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) [2023-01-28 09:44:07,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:07,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:07,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:44:07,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:07,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash 297645157, now seen corresponding path program 4 times [2023-01-28 09:44:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6814991] [2023-01-28 09:44:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:07,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6814991] [2023-01-28 09:44:07,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6814991] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:07,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:07,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:07,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542599569] [2023-01-28 09:44:07,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:07,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:44:07,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:07,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:44:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:44:07,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2023-01-28 09:44:07,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 1459 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2023-01-28 09:44:07,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:07,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2023-01-28 09:44:07,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:08,151 INFO L130 PetriNetUnfolder]: 634/1123 cut-off events. [2023-01-28 09:44:08,151 INFO L131 PetriNetUnfolder]: For 15019/15019 co-relation queries the response was YES. [2023-01-28 09:44:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7673 conditions, 1123 events. 634/1123 cut-off events. For 15019/15019 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5263 event pairs, 28 based on Foata normal form. 32/1155 useless extension candidates. Maximal degree in co-relation 6246. Up to 660 conditions per place. [2023-01-28 09:44:08,158 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 116 selfloop transitions, 15 changer transitions 95/226 dead transitions. [2023-01-28 09:44:08,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 226 transitions, 3464 flow [2023-01-28 09:44:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:44:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:44:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 723 transitions. [2023-01-28 09:44:08,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480718085106383 [2023-01-28 09:44:08,160 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 723 transitions. [2023-01-28 09:44:08,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 723 transitions. [2023-01-28 09:44:08,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:08,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 723 transitions. [2023-01-28 09:44:08,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 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) [2023-01-28 09:44:08,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 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) [2023-01-28 09:44:08,164 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 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) [2023-01-28 09:44:08,164 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 1459 flow. Second operand 8 states and 723 transitions. [2023-01-28 09:44:08,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 226 transitions, 3464 flow [2023-01-28 09:44:08,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 226 transitions, 3320 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-01-28 09:44:08,193 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 1643 flow [2023-01-28 09:44:08,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1643, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2023-01-28 09:44:08,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-01-28 09:44:08,194 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 1643 flow [2023-01-28 09:44:08,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2023-01-28 09:44:08,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:08,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:08,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:44:08,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:08,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1132828558, now seen corresponding path program 1 times [2023-01-28 09:44:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:08,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515617667] [2023-01-28 09:44:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:08,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515617667] [2023-01-28 09:44:08,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515617667] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068190883] [2023-01-28 09:44:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:08,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:08,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:08,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:08,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:44:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:08,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:44:08,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:08,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:08,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068190883] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:08,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 09:44:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880280332] [2023-01-28 09:44:08,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:44:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:44:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:44:08,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2023-01-28 09:44:08,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 1643 flow. Second operand has 12 states, 12 states have (on average 84.83333333333333) internal successors, (1018), 12 states have internal predecessors, (1018), 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) [2023-01-28 09:44:08,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:08,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2023-01-28 09:44:08,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:09,182 INFO L130 PetriNetUnfolder]: 878/1523 cut-off events. [2023-01-28 09:44:09,183 INFO L131 PetriNetUnfolder]: For 21461/21461 co-relation queries the response was YES. [2023-01-28 09:44:09,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10923 conditions, 1523 events. 878/1523 cut-off events. For 21461/21461 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7460 event pairs, 15 based on Foata normal form. 52/1575 useless extension candidates. Maximal degree in co-relation 10243. Up to 461 conditions per place. [2023-01-28 09:44:09,193 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 130 selfloop transitions, 58 changer transitions 154/342 dead transitions. [2023-01-28 09:44:09,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 342 transitions, 5277 flow [2023-01-28 09:44:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:44:09,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:44:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1519 transitions. [2023-01-28 09:44:09,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47528160200250313 [2023-01-28 09:44:09,196 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1519 transitions. [2023-01-28 09:44:09,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1519 transitions. [2023-01-28 09:44:09,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:09,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1519 transitions. [2023-01-28 09:44:09,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 89.3529411764706) internal successors, (1519), 17 states have internal predecessors, (1519), 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) [2023-01-28 09:44:09,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 188.0) internal successors, (3384), 18 states have internal predecessors, (3384), 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) [2023-01-28 09:44:09,202 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 188.0) internal successors, (3384), 18 states have internal predecessors, (3384), 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) [2023-01-28 09:44:09,202 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 1643 flow. Second operand 17 states and 1519 transitions. [2023-01-28 09:44:09,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 342 transitions, 5277 flow [2023-01-28 09:44:09,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 342 transitions, 4941 flow, removed 108 selfloop flow, removed 6 redundant places. [2023-01-28 09:44:09,255 INFO L231 Difference]: Finished difference. Result has 105 places, 133 transitions, 2036 flow [2023-01-28 09:44:09,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2036, PETRI_PLACES=105, PETRI_TRANSITIONS=133} [2023-01-28 09:44:09,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2023-01-28 09:44:09,257 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 133 transitions, 2036 flow [2023-01-28 09:44:09,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.83333333333333) internal successors, (1018), 12 states have internal predecessors, (1018), 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) [2023-01-28 09:44:09,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:09,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:09,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:44:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 09:44:09,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:09,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash -452623677, now seen corresponding path program 5 times [2023-01-28 09:44:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:09,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138604790] [2023-01-28 09:44:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138604790] [2023-01-28 09:44:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138604790] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956396969] [2023-01-28 09:44:09,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:44:09,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:09,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:09,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:44:09,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 09:44:09,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:09,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 09:44:09,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:09,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:10,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956396969] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:10,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 09:44:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311414827] [2023-01-28 09:44:10,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:10,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 09:44:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 09:44:10,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-01-28 09:44:10,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2023-01-28 09:44:10,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 133 transitions, 2036 flow. Second operand has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2023-01-28 09:44:10,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:10,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2023-01-28 09:44:10,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:11,295 INFO L130 PetriNetUnfolder]: 1744/3011 cut-off events. [2023-01-28 09:44:11,295 INFO L131 PetriNetUnfolder]: For 58257/58257 co-relation queries the response was YES. [2023-01-28 09:44:11,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23138 conditions, 3011 events. 1744/3011 cut-off events. For 58257/58257 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16723 event pairs, 17 based on Foata normal form. 80/3091 useless extension candidates. Maximal degree in co-relation 21517. Up to 981 conditions per place. [2023-01-28 09:44:11,322 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 220 selfloop transitions, 152 changer transitions 269/641 dead transitions. [2023-01-28 09:44:11,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 641 transitions, 10471 flow [2023-01-28 09:44:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 09:44:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 09:44:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3117 transitions. [2023-01-28 09:44:11,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737082066869301 [2023-01-28 09:44:11,328 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3117 transitions. [2023-01-28 09:44:11,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3117 transitions. [2023-01-28 09:44:11,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:11,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3117 transitions. [2023-01-28 09:44:11,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 89.05714285714286) internal successors, (3117), 35 states have internal predecessors, (3117), 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) [2023-01-28 09:44:11,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 188.0) internal successors, (6768), 36 states have internal predecessors, (6768), 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) [2023-01-28 09:44:11,342 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 188.0) internal successors, (6768), 36 states have internal predecessors, (6768), 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) [2023-01-28 09:44:11,342 INFO L175 Difference]: Start difference. First operand has 105 places, 133 transitions, 2036 flow. Second operand 35 states and 3117 transitions. [2023-01-28 09:44:11,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 641 transitions, 10471 flow [2023-01-28 09:44:11,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 641 transitions, 9455 flow, removed 356 selfloop flow, removed 11 redundant places. [2023-01-28 09:44:11,486 INFO L231 Difference]: Finished difference. Result has 137 places, 237 transitions, 4124 flow [2023-01-28 09:44:11,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4124, PETRI_PLACES=137, PETRI_TRANSITIONS=237} [2023-01-28 09:44:11,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2023-01-28 09:44:11,487 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 237 transitions, 4124 flow [2023-01-28 09:44:11,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2023-01-28 09:44:11,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:11,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:11,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 09:44:11,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 09:44:11,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:11,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 970370738, now seen corresponding path program 1 times [2023-01-28 09:44:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36433353] [2023-01-28 09:44:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36433353] [2023-01-28 09:44:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36433353] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041895006] [2023-01-28 09:44:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:11,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:11,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:11,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:12,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:44:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:12,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 09:44:12,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:12,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041895006] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:12,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:12,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-28 09:44:12,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726825365] [2023-01-28 09:44:12,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:12,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 09:44:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 09:44:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-01-28 09:44:12,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:44:12,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 237 transitions, 4124 flow. Second operand has 19 states, 19 states have (on average 82.05263157894737) internal successors, (1559), 19 states have internal predecessors, (1559), 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) [2023-01-28 09:44:12,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:12,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:44:12,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:14,241 INFO L130 PetriNetUnfolder]: 2044/3463 cut-off events. [2023-01-28 09:44:14,241 INFO L131 PetriNetUnfolder]: For 66373/66373 co-relation queries the response was YES. [2023-01-28 09:44:14,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26622 conditions, 3463 events. 2044/3463 cut-off events. For 66373/66373 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19404 event pairs, 25 based on Foata normal form. 92/3555 useless extension candidates. Maximal degree in co-relation 26356. Up to 1199 conditions per place. [2023-01-28 09:44:14,270 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 261 selfloop transitions, 201 changer transitions 246/708 dead transitions. [2023-01-28 09:44:14,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 708 transitions, 11569 flow [2023-01-28 09:44:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 09:44:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 09:44:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3393 transitions. [2023-01-28 09:44:14,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2023-01-28 09:44:14,274 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3393 transitions. [2023-01-28 09:44:14,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3393 transitions. [2023-01-28 09:44:14,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:14,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3393 transitions. [2023-01-28 09:44:14,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 87.0) internal successors, (3393), 39 states have internal predecessors, (3393), 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) [2023-01-28 09:44:14,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 188.0) internal successors, (7520), 40 states have internal predecessors, (7520), 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) [2023-01-28 09:44:14,286 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 188.0) internal successors, (7520), 40 states have internal predecessors, (7520), 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) [2023-01-28 09:44:14,286 INFO L175 Difference]: Start difference. First operand has 137 places, 237 transitions, 4124 flow. Second operand 39 states and 3393 transitions. [2023-01-28 09:44:14,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 708 transitions, 11569 flow [2023-01-28 09:44:14,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 708 transitions, 9692 flow, removed 916 selfloop flow, removed 20 redundant places. [2023-01-28 09:44:14,621 INFO L231 Difference]: Finished difference. Result has 151 places, 280 transitions, 4330 flow [2023-01-28 09:44:14,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4330, PETRI_PLACES=151, PETRI_TRANSITIONS=280} [2023-01-28 09:44:14,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2023-01-28 09:44:14,622 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 280 transitions, 4330 flow [2023-01-28 09:44:14,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 82.05263157894737) internal successors, (1559), 19 states have internal predecessors, (1559), 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) [2023-01-28 09:44:14,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:14,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:14,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:14,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:14,829 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:14,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:14,829 INFO L85 PathProgramCache]: Analyzing trace with hash 204084687, now seen corresponding path program 2 times [2023-01-28 09:44:14,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:14,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072331469] [2023-01-28 09:44:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:15,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:15,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072331469] [2023-01-28 09:44:15,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072331469] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:15,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477857394] [2023-01-28 09:44:15,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:44:15,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:15,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:15,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:15,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:44:15,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:44:15,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:15,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 09:44:15,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:15,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:15,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477857394] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:15,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:15,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 09:44:15,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453959498] [2023-01-28 09:44:15,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 09:44:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 09:44:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:44:15,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:44:15,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 280 transitions, 4330 flow. Second operand has 18 states, 18 states have (on average 82.22222222222223) internal successors, (1480), 18 states have internal predecessors, (1480), 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) [2023-01-28 09:44:15,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:15,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:44:15,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:17,858 INFO L130 PetriNetUnfolder]: 3580/6013 cut-off events. [2023-01-28 09:44:17,859 INFO L131 PetriNetUnfolder]: For 90251/90251 co-relation queries the response was YES. [2023-01-28 09:44:17,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43368 conditions, 6013 events. 3580/6013 cut-off events. For 90251/90251 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36641 event pairs, 35 based on Foata normal form. 196/6209 useless extension candidates. Maximal degree in co-relation 42664. Up to 2053 conditions per place. [2023-01-28 09:44:17,900 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 328 selfloop transitions, 256 changer transitions 503/1087 dead transitions. [2023-01-28 09:44:17,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1087 transitions, 18251 flow [2023-01-28 09:44:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 09:44:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 09:44:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3756 transitions. [2023-01-28 09:44:17,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646214745175656 [2023-01-28 09:44:17,904 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3756 transitions. [2023-01-28 09:44:17,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3756 transitions. [2023-01-28 09:44:17,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:17,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3756 transitions. [2023-01-28 09:44:17,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 87.34883720930233) internal successors, (3756), 43 states have internal predecessors, (3756), 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) [2023-01-28 09:44:17,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 188.0) internal successors, (8272), 44 states have internal predecessors, (8272), 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) [2023-01-28 09:44:17,914 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 188.0) internal successors, (8272), 44 states have internal predecessors, (8272), 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) [2023-01-28 09:44:17,914 INFO L175 Difference]: Start difference. First operand has 151 places, 280 transitions, 4330 flow. Second operand 43 states and 3756 transitions. [2023-01-28 09:44:17,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1087 transitions, 18251 flow [2023-01-28 09:44:18,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 1087 transitions, 16866 flow, removed 561 selfloop flow, removed 23 redundant places. [2023-01-28 09:44:18,449 INFO L231 Difference]: Finished difference. Result has 176 places, 405 transitions, 6928 flow [2023-01-28 09:44:18,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6928, PETRI_PLACES=176, PETRI_TRANSITIONS=405} [2023-01-28 09:44:18,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2023-01-28 09:44:18,449 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 405 transitions, 6928 flow [2023-01-28 09:44:18,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 82.22222222222223) internal successors, (1480), 18 states have internal predecessors, (1480), 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) [2023-01-28 09:44:18,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:18,450 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:18,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 09:44:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:18,654 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:18,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1434994220, now seen corresponding path program 3 times [2023-01-28 09:44:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:18,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858447023] [2023-01-28 09:44:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:18,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858447023] [2023-01-28 09:44:18,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858447023] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:18,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353486069] [2023-01-28 09:44:18,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:44:18,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:18,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:18,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:44:19,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-28 09:44:19,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:19,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 09:44:19,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:19,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353486069] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:19,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 09:44:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214542233] [2023-01-28 09:44:19,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:19,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 09:44:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 09:44:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-01-28 09:44:19,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-01-28 09:44:19,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 405 transitions, 6928 flow. Second operand has 20 states, 20 states have (on average 80.2) internal successors, (1604), 20 states have internal predecessors, (1604), 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) [2023-01-28 09:44:19,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:19,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-01-28 09:44:19,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:23,139 INFO L130 PetriNetUnfolder]: 4166/6897 cut-off events. [2023-01-28 09:44:23,139 INFO L131 PetriNetUnfolder]: For 132654/132654 co-relation queries the response was YES. [2023-01-28 09:44:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54213 conditions, 6897 events. 4166/6897 cut-off events. For 132654/132654 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 41443 event pairs, 73 based on Foata normal form. 226/7123 useless extension candidates. Maximal degree in co-relation 52696. Up to 2409 conditions per place. [2023-01-28 09:44:23,190 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 530 selfloop transitions, 335 changer transitions 329/1194 dead transitions. [2023-01-28 09:44:23,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1194 transitions, 22299 flow [2023-01-28 09:44:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-01-28 09:44:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-01-28 09:44:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 6507 transitions. [2023-01-28 09:44:23,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44373977086743044 [2023-01-28 09:44:23,203 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 6507 transitions. [2023-01-28 09:44:23,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 6507 transitions. [2023-01-28 09:44:23,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:23,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 6507 transitions. [2023-01-28 09:44:23,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 83.42307692307692) internal successors, (6507), 78 states have internal predecessors, (6507), 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) [2023-01-28 09:44:23,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 188.0) internal successors, (14852), 79 states have internal predecessors, (14852), 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) [2023-01-28 09:44:23,230 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 188.0) internal successors, (14852), 79 states have internal predecessors, (14852), 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) [2023-01-28 09:44:23,230 INFO L175 Difference]: Start difference. First operand has 176 places, 405 transitions, 6928 flow. Second operand 78 states and 6507 transitions. [2023-01-28 09:44:23,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1194 transitions, 22299 flow [2023-01-28 09:44:24,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 1194 transitions, 19314 flow, removed 1461 selfloop flow, removed 21 redundant places. [2023-01-28 09:44:24,148 INFO L231 Difference]: Finished difference. Result has 261 places, 587 transitions, 10230 flow [2023-01-28 09:44:24,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=5955, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=10230, PETRI_PLACES=261, PETRI_TRANSITIONS=587} [2023-01-28 09:44:24,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2023-01-28 09:44:24,148 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 587 transitions, 10230 flow [2023-01-28 09:44:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 80.2) internal successors, (1604), 20 states have internal predecessors, (1604), 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) [2023-01-28 09:44:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:24,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:24,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 09:44:24,353 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:24,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1687850452, now seen corresponding path program 4 times [2023-01-28 09:44:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297830649] [2023-01-28 09:44:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297830649] [2023-01-28 09:44:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297830649] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096303202] [2023-01-28 09:44:24,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:44:24,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:24,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:24,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:24,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:44:24,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:44:24,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:24,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 09:44:24,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:25,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096303202] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:25,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:25,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 09:44:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913995111] [2023-01-28 09:44:25,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 09:44:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 09:44:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-01-28 09:44:25,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:44:25,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 587 transitions, 10230 flow. Second operand has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 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) [2023-01-28 09:44:25,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:25,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:44:25,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:29,227 INFO L130 PetriNetUnfolder]: 5702/9503 cut-off events. [2023-01-28 09:44:29,227 INFO L131 PetriNetUnfolder]: For 293565/293565 co-relation queries the response was YES. [2023-01-28 09:44:29,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77428 conditions, 9503 events. 5702/9503 cut-off events. For 293565/293565 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 61103 event pairs, 107 based on Foata normal form. 186/9689 useless extension candidates. Maximal degree in co-relation 77305. Up to 3335 conditions per place. [2023-01-28 09:44:29,302 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 566 selfloop transitions, 443 changer transitions 416/1425 dead transitions. [2023-01-28 09:44:29,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1425 transitions, 27148 flow [2023-01-28 09:44:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-01-28 09:44:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-01-28 09:44:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4442 transitions. [2023-01-28 09:44:29,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46328744263662913 [2023-01-28 09:44:29,306 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4442 transitions. [2023-01-28 09:44:29,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4442 transitions. [2023-01-28 09:44:29,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:29,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4442 transitions. [2023-01-28 09:44:29,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 87.09803921568627) internal successors, (4442), 51 states have internal predecessors, (4442), 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) [2023-01-28 09:44:29,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 188.0) internal successors, (9776), 52 states have internal predecessors, (9776), 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) [2023-01-28 09:44:29,318 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 188.0) internal successors, (9776), 52 states have internal predecessors, (9776), 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) [2023-01-28 09:44:29,318 INFO L175 Difference]: Start difference. First operand has 261 places, 587 transitions, 10230 flow. Second operand 51 states and 4442 transitions. [2023-01-28 09:44:29,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1425 transitions, 27148 flow [2023-01-28 09:44:31,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1425 transitions, 23738 flow, removed 1417 selfloop flow, removed 48 redundant places. [2023-01-28 09:44:31,162 INFO L231 Difference]: Finished difference. Result has 240 places, 768 transitions, 13605 flow [2023-01-28 09:44:31,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=13605, PETRI_PLACES=240, PETRI_TRANSITIONS=768} [2023-01-28 09:44:31,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2023-01-28 09:44:31,163 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 768 transitions, 13605 flow [2023-01-28 09:44:31,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 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) [2023-01-28 09:44:31,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:31,163 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:31,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:31,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 09:44:31,368 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:31,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 815060047, now seen corresponding path program 6 times [2023-01-28 09:44:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676346921] [2023-01-28 09:44:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:31,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676346921] [2023-01-28 09:44:31,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676346921] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:31,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548652779] [2023-01-28 09:44:31,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:44:31,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:31,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:31,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:31,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:44:32,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-01-28 09:44:32,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:32,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:44:32,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:32,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548652779] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:33,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:33,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-28 09:44:33,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962669945] [2023-01-28 09:44:33,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:33,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 09:44:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:33,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 09:44:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-01-28 09:44:33,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:44:33,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 768 transitions, 13605 flow. Second operand has 24 states, 24 states have (on average 81.66666666666667) internal successors, (1960), 24 states have internal predecessors, (1960), 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) [2023-01-28 09:44:33,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:33,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:44:33,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:38,065 INFO L130 PetriNetUnfolder]: 7023/11730 cut-off events. [2023-01-28 09:44:38,066 INFO L131 PetriNetUnfolder]: For 213327/213327 co-relation queries the response was YES. [2023-01-28 09:44:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90057 conditions, 11730 events. 7023/11730 cut-off events. For 213327/213327 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 77954 event pairs, 157 based on Foata normal form. 318/12048 useless extension candidates. Maximal degree in co-relation 89934. Up to 4223 conditions per place. [2023-01-28 09:44:38,178 INFO L137 encePairwiseOnDemand]: 178/188 looper letters, 742 selfloop transitions, 497 changer transitions 459/1698 dead transitions. [2023-01-28 09:44:38,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1698 transitions, 32500 flow [2023-01-28 09:44:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-28 09:44:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-28 09:44:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 6424 transitions. [2023-01-28 09:44:38,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45560283687943265 [2023-01-28 09:44:38,185 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 6424 transitions. [2023-01-28 09:44:38,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 6424 transitions. [2023-01-28 09:44:38,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:38,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 6424 transitions. [2023-01-28 09:44:38,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 85.65333333333334) internal successors, (6424), 75 states have internal predecessors, (6424), 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) [2023-01-28 09:44:38,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 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) [2023-01-28 09:44:38,203 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 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) [2023-01-28 09:44:38,203 INFO L175 Difference]: Start difference. First operand has 240 places, 768 transitions, 13605 flow. Second operand 75 states and 6424 transitions. [2023-01-28 09:44:38,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1698 transitions, 32500 flow [2023-01-28 09:44:40,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1698 transitions, 31087 flow, removed 612 selfloop flow, removed 30 redundant places. [2023-01-28 09:44:40,359 INFO L231 Difference]: Finished difference. Result has 310 places, 1001 transitions, 18474 flow [2023-01-28 09:44:40,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=12540, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=18474, PETRI_PLACES=310, PETRI_TRANSITIONS=1001} [2023-01-28 09:44:40,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2023-01-28 09:44:40,360 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 1001 transitions, 18474 flow [2023-01-28 09:44:40,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 81.66666666666667) internal successors, (1960), 24 states have internal predecessors, (1960), 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) [2023-01-28 09:44:40,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:40,360 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:40,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:40,565 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:40,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1332058439, now seen corresponding path program 5 times [2023-01-28 09:44:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:40,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19991396] [2023-01-28 09:44:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:40,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:40,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:40,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19991396] [2023-01-28 09:44:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19991396] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:40,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245194713] [2023-01-28 09:44:40,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:44:40,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:40,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:40,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:40,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 09:44:41,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-28 09:44:41,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:44:41,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245194713] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:42,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-28 09:44:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895614502] [2023-01-28 09:44:42,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:42,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 09:44:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 09:44:42,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-01-28 09:44:42,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:44:42,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1001 transitions, 18474 flow. Second operand has 24 states, 24 states have (on average 81.5) internal successors, (1956), 24 states have internal predecessors, (1956), 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) [2023-01-28 09:44:42,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:42,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:44:42,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:50,619 INFO L130 PetriNetUnfolder]: 10041/16834 cut-off events. [2023-01-28 09:44:50,619 INFO L131 PetriNetUnfolder]: For 612691/612691 co-relation queries the response was YES. [2023-01-28 09:44:50,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144704 conditions, 16834 events. 10041/16834 cut-off events. For 612691/612691 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 120073 event pairs, 145 based on Foata normal form. 360/17194 useless extension candidates. Maximal degree in co-relation 144552. Up to 5969 conditions per place. [2023-01-28 09:44:50,760 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 868 selfloop transitions, 758 changer transitions 904/2530 dead transitions. [2023-01-28 09:44:50,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 2530 transitions, 52825 flow [2023-01-28 09:44:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-01-28 09:44:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-01-28 09:44:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 7060 transitions. [2023-01-28 09:44:50,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46361964801681116 [2023-01-28 09:44:50,766 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 7060 transitions. [2023-01-28 09:44:50,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 7060 transitions. [2023-01-28 09:44:50,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:50,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 7060 transitions. [2023-01-28 09:44:50,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 87.1604938271605) internal successors, (7060), 81 states have internal predecessors, (7060), 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) [2023-01-28 09:44:50,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 188.0) internal successors, (15416), 82 states have internal predecessors, (15416), 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) [2023-01-28 09:44:50,782 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 188.0) internal successors, (15416), 82 states have internal predecessors, (15416), 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) [2023-01-28 09:44:50,782 INFO L175 Difference]: Start difference. First operand has 310 places, 1001 transitions, 18474 flow. Second operand 81 states and 7060 transitions. [2023-01-28 09:44:50,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 2530 transitions, 52825 flow [2023-01-28 09:44:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 2530 transitions, 46884 flow, removed 2928 selfloop flow, removed 51 redundant places. [2023-01-28 09:44:56,618 INFO L231 Difference]: Finished difference. Result has 328 places, 1269 transitions, 24924 flow [2023-01-28 09:44:56,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=17083, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=24924, PETRI_PLACES=328, PETRI_TRANSITIONS=1269} [2023-01-28 09:44:56,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2023-01-28 09:44:56,619 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 1269 transitions, 24924 flow [2023-01-28 09:44:56,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 81.5) internal successors, (1956), 24 states have internal predecessors, (1956), 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) [2023-01-28 09:44:56,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:56,619 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:56,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 09:44:56,828 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:56,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1456534505, now seen corresponding path program 6 times [2023-01-28 09:44:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343929711] [2023-01-28 09:44:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343929711] [2023-01-28 09:44:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343929711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425413813] [2023-01-28 09:44:57,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:44:57,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:57,204 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:57,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 09:44:57,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 09:44:57,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:57,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:44:57,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:57,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:58,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425413813] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:58,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:58,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-28 09:44:58,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099846101] [2023-01-28 09:44:58,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:58,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 09:44:58,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 09:44:58,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-01-28 09:44:58,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-01-28 09:44:58,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 1269 transitions, 24924 flow. Second operand has 24 states, 24 states have (on average 79.66666666666667) internal successors, (1912), 24 states have internal predecessors, (1912), 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) [2023-01-28 09:44:58,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:58,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-01-28 09:44:58,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:45:06,372 INFO L130 PetriNetUnfolder]: 10916/18211 cut-off events. [2023-01-28 09:45:06,373 INFO L131 PetriNetUnfolder]: For 488894/488894 co-relation queries the response was YES. [2023-01-28 09:45:06,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151599 conditions, 18211 events. 10916/18211 cut-off events. For 488894/488894 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 130166 event pairs, 221 based on Foata normal form. 278/18489 useless extension candidates. Maximal degree in co-relation 151332. Up to 6497 conditions per place. [2023-01-28 09:45:06,527 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 922 selfloop transitions, 1022 changer transitions 332/2276 dead transitions. [2023-01-28 09:45:06,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 2276 transitions, 47921 flow [2023-01-28 09:45:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-01-28 09:45:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-01-28 09:45:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 5782 transitions. [2023-01-28 09:45:06,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44572926302806043 [2023-01-28 09:45:06,541 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 5782 transitions. [2023-01-28 09:45:06,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 5782 transitions. [2023-01-28 09:45:06,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:45:06,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 5782 transitions. [2023-01-28 09:45:06,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 83.79710144927536) internal successors, (5782), 69 states have internal predecessors, (5782), 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) [2023-01-28 09:45:06,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 188.0) internal successors, (13160), 70 states have internal predecessors, (13160), 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) [2023-01-28 09:45:06,555 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 188.0) internal successors, (13160), 70 states have internal predecessors, (13160), 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) [2023-01-28 09:45:06,555 INFO L175 Difference]: Start difference. First operand has 328 places, 1269 transitions, 24924 flow. Second operand 69 states and 5782 transitions. [2023-01-28 09:45:06,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 2276 transitions, 47921 flow [2023-01-28 09:45:11,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 2276 transitions, 44160 flow, removed 1601 selfloop flow, removed 42 redundant places. [2023-01-28 09:45:11,745 INFO L231 Difference]: Finished difference. Result has 360 places, 1625 transitions, 33729 flow [2023-01-28 09:45:11,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=22733, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=33729, PETRI_PLACES=360, PETRI_TRANSITIONS=1625} [2023-01-28 09:45:11,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2023-01-28 09:45:11,747 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 1625 transitions, 33729 flow [2023-01-28 09:45:11,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.66666666666667) internal successors, (1912), 24 states have internal predecessors, (1912), 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) [2023-01-28 09:45:11,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:45:11,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:45:11,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 09:45:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 09:45:11,948 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:45:11,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:45:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -374995805, now seen corresponding path program 7 times [2023-01-28 09:45:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:45:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437903808] [2023-01-28 09:45:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:45:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:45:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:45:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:45:12,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437903808] [2023-01-28 09:45:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437903808] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:45:12,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651298734] [2023-01-28 09:45:12,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:45:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:45:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:45:12,330 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:45:12,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 09:45:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:45:12,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:45:12,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:45:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:12,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:45:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651298734] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:45:13,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:45:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-28 09:45:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528228005] [2023-01-28 09:45:13,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:45:13,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 09:45:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:45:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 09:45:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:45:13,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:45:13,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1625 transitions, 33729 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:45:13,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:45:13,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:45:13,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:45:24,794 INFO L130 PetriNetUnfolder]: 14013/23490 cut-off events. [2023-01-28 09:45:24,794 INFO L131 PetriNetUnfolder]: For 643816/643816 co-relation queries the response was YES. [2023-01-28 09:45:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206159 conditions, 23490 events. 14013/23490 cut-off events. For 643816/643816 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 176356 event pairs, 261 based on Foata normal form. 330/23820 useless extension candidates. Maximal degree in co-relation 205957. Up to 8321 conditions per place. [2023-01-28 09:45:25,230 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1269 selfloop transitions, 934 changer transitions 710/2913 dead transitions. [2023-01-28 09:45:25,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 2913 transitions, 65681 flow [2023-01-28 09:45:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-01-28 09:45:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-01-28 09:45:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5231 transitions. [2023-01-28 09:45:25,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46374113475177303 [2023-01-28 09:45:25,234 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5231 transitions. [2023-01-28 09:45:25,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5231 transitions. [2023-01-28 09:45:25,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:45:25,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5231 transitions. [2023-01-28 09:45:25,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 87.18333333333334) internal successors, (5231), 60 states have internal predecessors, (5231), 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) [2023-01-28 09:45:25,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 188.0) internal successors, (11468), 61 states have internal predecessors, (11468), 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) [2023-01-28 09:45:25,245 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 188.0) internal successors, (11468), 61 states have internal predecessors, (11468), 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) [2023-01-28 09:45:25,245 INFO L175 Difference]: Start difference. First operand has 360 places, 1625 transitions, 33729 flow. Second operand 60 states and 5231 transitions. [2023-01-28 09:45:25,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 2913 transitions, 65681 flow [2023-01-28 09:45:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 2913 transitions, 61933 flow, removed 1763 selfloop flow, removed 41 redundant places. [2023-01-28 09:45:36,498 INFO L231 Difference]: Finished difference. Result has 377 places, 1913 transitions, 41810 flow [2023-01-28 09:45:36,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=32363, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=41810, PETRI_PLACES=377, PETRI_TRANSITIONS=1913} [2023-01-28 09:45:36,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-28 09:45:36,500 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1913 transitions, 41810 flow [2023-01-28 09:45:36,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:45:36,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:45:36,500 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:45:36,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 09:45:36,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:45:36,705 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:45:36,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:45:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash -861836191, now seen corresponding path program 8 times [2023-01-28 09:45:36,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:45:36,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861749311] [2023-01-28 09:45:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:45:36,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:45:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:45:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:37,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:45:37,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861749311] [2023-01-28 09:45:37,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861749311] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:45:37,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869262993] [2023-01-28 09:45:37,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:45:37,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:45:37,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:45:37,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:45:37,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 09:45:37,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:45:37,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:45:37,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:45:37,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:45:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:37,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:45:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:38,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869262993] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:45:38,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:45:38,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-28 09:45:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449025446] [2023-01-28 09:45:38,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:45:38,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 09:45:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:45:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 09:45:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:45:38,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:45:38,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1913 transitions, 41810 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:45:38,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:45:38,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:45:38,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:45:51,405 INFO L130 PetriNetUnfolder]: 14865/24854 cut-off events. [2023-01-28 09:45:51,405 INFO L131 PetriNetUnfolder]: For 613998/613998 co-relation queries the response was YES. [2023-01-28 09:45:51,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219028 conditions, 24854 events. 14865/24854 cut-off events. For 613998/613998 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 186361 event pairs, 329 based on Foata normal form. 338/25192 useless extension candidates. Maximal degree in co-relation 218802. Up to 8783 conditions per place. [2023-01-28 09:45:51,894 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1380 selfloop transitions, 1113 changer transitions 421/2914 dead transitions. [2023-01-28 09:45:51,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 2914 transitions, 67362 flow [2023-01-28 09:45:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-28 09:45:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-28 09:45:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5884 transitions. [2023-01-28 09:45:51,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602628285356696 [2023-01-28 09:45:51,898 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5884 transitions. [2023-01-28 09:45:51,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5884 transitions. [2023-01-28 09:45:51,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:45:51,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5884 transitions. [2023-01-28 09:45:51,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 86.52941176470588) internal successors, (5884), 68 states have internal predecessors, (5884), 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) [2023-01-28 09:45:51,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 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) [2023-01-28 09:45:51,910 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 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) [2023-01-28 09:45:51,910 INFO L175 Difference]: Start difference. First operand has 377 places, 1913 transitions, 41810 flow. Second operand 68 states and 5884 transitions. [2023-01-28 09:45:51,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 2914 transitions, 67362 flow [2023-01-28 09:46:01,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 2914 transitions, 64489 flow, removed 1315 selfloop flow, removed 37 redundant places. [2023-01-28 09:46:01,868 INFO L231 Difference]: Finished difference. Result has 419 places, 2121 transitions, 49097 flow [2023-01-28 09:46:01,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=40006, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=842, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=49097, PETRI_PLACES=419, PETRI_TRANSITIONS=2121} [2023-01-28 09:46:01,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2023-01-28 09:46:01,870 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 2121 transitions, 49097 flow [2023-01-28 09:46:01,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:46:01,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:46:01,870 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:46:01,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 09:46:02,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:46:02,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:46:02,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:46:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1679700261, now seen corresponding path program 9 times [2023-01-28 09:46:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:46:02,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082562198] [2023-01-28 09:46:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:46:02,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:46:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:46:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:46:02,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:46:02,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082562198] [2023-01-28 09:46:02,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082562198] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:46:02,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160598792] [2023-01-28 09:46:02,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:46:02,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:46:02,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:46:02,526 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:46:02,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 09:46:02,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 09:46:02,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:46:02,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:46:02,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:46:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:46:02,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:46:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:46:03,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160598792] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:46:03,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:46:03,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-01-28 09:46:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988635583] [2023-01-28 09:46:03,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:46:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 09:46:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:46:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 09:46:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-01-28 09:46:03,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:46:03,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 2121 transitions, 49097 flow. Second operand has 23 states, 23 states have (on average 81.56521739130434) internal successors, (1876), 23 states have internal predecessors, (1876), 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) [2023-01-28 09:46:03,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:46:03,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:46:03,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:46:19,889 INFO L130 PetriNetUnfolder]: 17241/28954 cut-off events. [2023-01-28 09:46:19,889 INFO L131 PetriNetUnfolder]: For 673318/673318 co-relation queries the response was YES. [2023-01-28 09:46:20,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260573 conditions, 28954 events. 17241/28954 cut-off events. For 673318/673318 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 224657 event pairs, 411 based on Foata normal form. 266/29220 useless extension candidates. Maximal degree in co-relation 260458. Up to 11728 conditions per place. [2023-01-28 09:46:20,352 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1704 selfloop transitions, 1078 changer transitions 680/3462 dead transitions. [2023-01-28 09:46:20,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 3462 transitions, 84050 flow [2023-01-28 09:46:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-28 09:46:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-28 09:46:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5932 transitions. [2023-01-28 09:46:20,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464017521902378 [2023-01-28 09:46:20,366 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5932 transitions. [2023-01-28 09:46:20,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5932 transitions. [2023-01-28 09:46:20,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:46:20,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5932 transitions. [2023-01-28 09:46:20,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 87.23529411764706) internal successors, (5932), 68 states have internal predecessors, (5932), 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) [2023-01-28 09:46:20,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 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) [2023-01-28 09:46:20,400 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 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) [2023-01-28 09:46:20,400 INFO L175 Difference]: Start difference. First operand has 419 places, 2121 transitions, 49097 flow. Second operand 68 states and 5932 transitions. [2023-01-28 09:46:20,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 3462 transitions, 84050 flow [2023-01-28 09:46:38,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 3462 transitions, 80779 flow, removed 1532 selfloop flow, removed 30 redundant places. [2023-01-28 09:46:39,011 INFO L231 Difference]: Finished difference. Result has 450 places, 2432 transitions, 58341 flow [2023-01-28 09:46:39,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=47484, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=58341, PETRI_PLACES=450, PETRI_TRANSITIONS=2432} [2023-01-28 09:46:39,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-01-28 09:46:39,013 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2432 transitions, 58341 flow [2023-01-28 09:46:39,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.56521739130434) internal successors, (1876), 23 states have internal predecessors, (1876), 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) [2023-01-28 09:46:39,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:46:39,014 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:46:39,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 09:46:39,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-28 09:46:39,219 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:46:39,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:46:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash 641642743, now seen corresponding path program 10 times [2023-01-28 09:46:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:46:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609406750] [2023-01-28 09:46:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:46:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:46:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:46:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:46:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:46:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609406750] [2023-01-28 09:46:39,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609406750] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:46:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486072915] [2023-01-28 09:46:39,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:46:39,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:46:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:46:39,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:46:39,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 09:46:39,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:46:39,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:46:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:46:39,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:46:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:46:39,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:46:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:46:40,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486072915] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:46:40,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:46:40,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-28 09:46:40,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178962378] [2023-01-28 09:46:40,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:46:40,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 09:46:40,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:46:40,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 09:46:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:46:40,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:46:40,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 2432 transitions, 58341 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:46:40,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:46:40,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:46:40,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:47:00,702 INFO L130 PetriNetUnfolder]: 20120/33819 cut-off events. [2023-01-28 09:47:00,703 INFO L131 PetriNetUnfolder]: For 1044291/1044291 co-relation queries the response was YES. [2023-01-28 09:47:01,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313464 conditions, 33819 events. 20120/33819 cut-off events. For 1044291/1044291 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 268174 event pairs, 333 based on Foata normal form. 468/34287 useless extension candidates. Maximal degree in co-relation 313343. Up to 12069 conditions per place. [2023-01-28 09:47:01,364 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1577 selfloop transitions, 1496 changer transitions 950/4023 dead transitions. [2023-01-28 09:47:01,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 4023 transitions, 101035 flow [2023-01-28 09:47:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-01-28 09:47:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-01-28 09:47:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 6362 transitions. [2023-01-28 09:47:01,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46356747303993007 [2023-01-28 09:47:01,368 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 6362 transitions. [2023-01-28 09:47:01,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 6362 transitions. [2023-01-28 09:47:01,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:47:01,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 6362 transitions. [2023-01-28 09:47:01,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 87.15068493150685) internal successors, (6362), 73 states have internal predecessors, (6362), 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) [2023-01-28 09:47:01,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 188.0) internal successors, (13912), 74 states have internal predecessors, (13912), 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) [2023-01-28 09:47:01,409 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 188.0) internal successors, (13912), 74 states have internal predecessors, (13912), 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) [2023-01-28 09:47:01,409 INFO L175 Difference]: Start difference. First operand has 450 places, 2432 transitions, 58341 flow. Second operand 73 states and 6362 transitions. [2023-01-28 09:47:01,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 4023 transitions, 101035 flow [2023-01-28 09:47:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 4023 transitions, 98093 flow, removed 1400 selfloop flow, removed 30 redundant places. [2023-01-28 09:47:19,957 INFO L231 Difference]: Finished difference. Result has 498 places, 2703 transitions, 68955 flow [2023-01-28 09:47:19,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=56700, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=68955, PETRI_PLACES=498, PETRI_TRANSITIONS=2703} [2023-01-28 09:47:19,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2023-01-28 09:47:19,959 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 2703 transitions, 68955 flow [2023-01-28 09:47:19,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:47:19,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:47:19,960 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:47:19,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 09:47:20,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 09:47:20,167 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:47:20,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:47:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1196493169, now seen corresponding path program 11 times [2023-01-28 09:47:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:47:20,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049066111] [2023-01-28 09:47:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:47:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:47:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:47:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:47:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:47:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049066111] [2023-01-28 09:47:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049066111] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:47:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420891043] [2023-01-28 09:47:20,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:47:20,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:47:20,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:47:20,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:47:20,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 09:47:20,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-28 09:47:20,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:47:20,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:47:20,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:47:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:47:20,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:47:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:47:21,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420891043] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:47:21,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:47:21,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-28 09:47:21,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695964291] [2023-01-28 09:47:21,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:47:21,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 09:47:21,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:47:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 09:47:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:47:21,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:47:21,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 2703 transitions, 68955 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:47:21,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:47:21,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:47:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:47:43,585 INFO L130 PetriNetUnfolder]: 20212/33745 cut-off events. [2023-01-28 09:47:43,586 INFO L131 PetriNetUnfolder]: For 1132339/1132339 co-relation queries the response was YES. [2023-01-28 09:47:44,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323479 conditions, 33745 events. 20212/33745 cut-off events. For 1132339/1132339 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 265346 event pairs, 455 based on Foata normal form. 330/34075 useless extension candidates. Maximal degree in co-relation 323343. Up to 16085 conditions per place. [2023-01-28 09:47:44,194 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2159 selfloop transitions, 1010 changer transitions 686/3855 dead transitions. [2023-01-28 09:47:44,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 3855 transitions, 100857 flow [2023-01-28 09:47:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-01-28 09:47:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-01-28 09:47:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 6280 transitions. [2023-01-28 09:47:44,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639479905437352 [2023-01-28 09:47:44,198 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 6280 transitions. [2023-01-28 09:47:44,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 6280 transitions. [2023-01-28 09:47:44,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:47:44,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 6280 transitions. [2023-01-28 09:47:44,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 87.22222222222223) internal successors, (6280), 72 states have internal predecessors, (6280), 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) [2023-01-28 09:47:44,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 188.0) internal successors, (13724), 73 states have internal predecessors, (13724), 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) [2023-01-28 09:47:44,209 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 188.0) internal successors, (13724), 73 states have internal predecessors, (13724), 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) [2023-01-28 09:47:44,209 INFO L175 Difference]: Start difference. First operand has 498 places, 2703 transitions, 68955 flow. Second operand 72 states and 6280 transitions. [2023-01-28 09:47:44,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 3855 transitions, 100857 flow [2023-01-28 09:48:02,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 3855 transitions, 97475 flow, removed 1501 selfloop flow, removed 40 redundant places. [2023-01-28 09:48:02,257 INFO L231 Difference]: Finished difference. Result has 527 places, 2825 transitions, 73128 flow [2023-01-28 09:48:02,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=66129, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1850, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=73128, PETRI_PLACES=527, PETRI_TRANSITIONS=2825} [2023-01-28 09:48:02,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 497 predicate places. [2023-01-28 09:48:02,261 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 2825 transitions, 73128 flow [2023-01-28 09:48:02,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:48:02,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:48:02,261 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:48:02,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 09:48:02,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:48:02,468 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:48:02,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:48:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1538225957, now seen corresponding path program 12 times [2023-01-28 09:48:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:48:02,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081769007] [2023-01-28 09:48:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:48:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:48:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:48:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:48:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081769007] [2023-01-28 09:48:02,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081769007] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:48:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719761076] [2023-01-28 09:48:02,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:48:02,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:48:02,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:48:02,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:48:02,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 09:48:02,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-01-28 09:48:02,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:48:02,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:48:02,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:48:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:03,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:48:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719761076] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:48:04,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:48:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-28 09:48:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554351297] [2023-01-28 09:48:04,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:48:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 09:48:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:48:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 09:48:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:48:04,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:48:04,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 2825 transitions, 73128 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:48:04,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:48:04,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:48:04,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:48:28,106 INFO L130 PetriNetUnfolder]: 21650/36243 cut-off events. [2023-01-28 09:48:28,107 INFO L131 PetriNetUnfolder]: For 1291197/1291197 co-relation queries the response was YES. [2023-01-28 09:48:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354695 conditions, 36243 events. 21650/36243 cut-off events. For 1291197/1291197 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 288285 event pairs, 445 based on Foata normal form. 314/36557 useless extension candidates. Maximal degree in co-relation 354555. Up to 15394 conditions per place. [2023-01-28 09:48:29,066 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2029 selfloop transitions, 1377 changer transitions 651/4057 dead transitions. [2023-01-28 09:48:29,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 4057 transitions, 110194 flow [2023-01-28 09:48:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-28 09:48:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-28 09:48:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5929 transitions. [2023-01-28 09:48:29,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637828535669587 [2023-01-28 09:48:29,072 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5929 transitions. [2023-01-28 09:48:29,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5929 transitions. [2023-01-28 09:48:29,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:48:29,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5929 transitions. [2023-01-28 09:48:29,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 87.19117647058823) internal successors, (5929), 68 states have internal predecessors, (5929), 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) [2023-01-28 09:48:29,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 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) [2023-01-28 09:48:29,087 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 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) [2023-01-28 09:48:29,087 INFO L175 Difference]: Start difference. First operand has 527 places, 2825 transitions, 73128 flow. Second operand 68 states and 5929 transitions. [2023-01-28 09:48:29,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 4057 transitions, 110194 flow [2023-01-28 09:48:53,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 4057 transitions, 103661 flow, removed 2252 selfloop flow, removed 43 redundant places. [2023-01-28 09:48:53,978 INFO L231 Difference]: Finished difference. Result has 535 places, 3015 transitions, 79732 flow [2023-01-28 09:48:53,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=69253, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=79732, PETRI_PLACES=535, PETRI_TRANSITIONS=3015} [2023-01-28 09:48:53,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 505 predicate places. [2023-01-28 09:48:53,981 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 3015 transitions, 79732 flow [2023-01-28 09:48:53,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 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) [2023-01-28 09:48:53,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:48:53,981 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:48:53,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 09:48:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:48:54,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:48:54,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:48:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash 947299016, now seen corresponding path program 13 times [2023-01-28 09:48:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:48:54,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727632747] [2023-01-28 09:48:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:48:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:48:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:48:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:54,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:48:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727632747] [2023-01-28 09:48:54,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727632747] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:48:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596776849] [2023-01-28 09:48:54,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:48:54,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:48:54,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:48:54,510 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:48:54,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 09:48:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:48:54,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:48:54,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:48:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:55,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:48:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:56,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596776849] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:48:56,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:48:56,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-01-28 09:48:56,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771397917] [2023-01-28 09:48:56,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:48:56,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 09:48:56,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:48:56,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 09:48:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:48:56,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:48:56,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 3015 transitions, 79732 flow. Second operand has 27 states, 27 states have (on average 81.74074074074075) internal successors, (2207), 27 states have internal predecessors, (2207), 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) [2023-01-28 09:48:56,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:48:56,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:48:56,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:49:22,136 INFO L130 PetriNetUnfolder]: 22987/38300 cut-off events. [2023-01-28 09:49:22,136 INFO L131 PetriNetUnfolder]: For 1189470/1189470 co-relation queries the response was YES. [2023-01-28 09:49:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375585 conditions, 38300 events. 22987/38300 cut-off events. For 1189470/1189470 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 305084 event pairs, 519 based on Foata normal form. 424/38724 useless extension candidates. Maximal degree in co-relation 375456. Up to 18394 conditions per place. [2023-01-28 09:49:23,021 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2458 selfloop transitions, 1141 changer transitions 556/4155 dead transitions. [2023-01-28 09:49:23,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 4155 transitions, 116301 flow [2023-01-28 09:49:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-28 09:49:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-28 09:49:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 6461 transitions. [2023-01-28 09:49:23,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582269503546099 [2023-01-28 09:49:23,027 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 6461 transitions. [2023-01-28 09:49:23,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 6461 transitions. [2023-01-28 09:49:23,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:49:23,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 6461 transitions. [2023-01-28 09:49:23,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 86.14666666666666) internal successors, (6461), 75 states have internal predecessors, (6461), 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) [2023-01-28 09:49:23,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 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) [2023-01-28 09:49:23,041 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 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) [2023-01-28 09:49:23,041 INFO L175 Difference]: Start difference. First operand has 535 places, 3015 transitions, 79732 flow. Second operand 75 states and 6461 transitions. [2023-01-28 09:49:23,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 4155 transitions, 116301 flow [2023-01-28 09:49:44,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 4155 transitions, 112449 flow, removed 1824 selfloop flow, removed 33 redundant places. [2023-01-28 09:49:44,250 INFO L231 Difference]: Finished difference. Result has 587 places, 3232 transitions, 87791 flow [2023-01-28 09:49:44,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=76942, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=903, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2012, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=87791, PETRI_PLACES=587, PETRI_TRANSITIONS=3232} [2023-01-28 09:49:44,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 557 predicate places. [2023-01-28 09:49:44,253 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 3232 transitions, 87791 flow [2023-01-28 09:49:44,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.74074074074075) internal successors, (2207), 27 states have internal predecessors, (2207), 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) [2023-01-28 09:49:44,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:49:44,253 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:49:44,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 09:49:44,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 09:49:44,457 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:49:44,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:49:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 954649586, now seen corresponding path program 14 times [2023-01-28 09:49:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:49:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296427824] [2023-01-28 09:49:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:49:44,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:49:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:49:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:49:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:49:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296427824] [2023-01-28 09:49:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296427824] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:49:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722401266] [2023-01-28 09:49:45,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:49:45,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:49:45,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:49:45,264 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:49:45,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 09:49:45,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:49:45,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:49:45,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 09:49:45,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:49:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:49:45,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:49:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:49:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722401266] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:49:47,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:49:47,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-01-28 09:49:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670448169] [2023-01-28 09:49:47,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:49:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 09:49:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:49:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 09:49:47,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2023-01-28 09:49:47,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:49:47,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 3232 transitions, 87791 flow. Second operand has 30 states, 30 states have (on average 81.66666666666667) internal successors, (2450), 30 states have internal predecessors, (2450), 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) [2023-01-28 09:49:47,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:49:47,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:49:47,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:50:20,414 INFO L130 PetriNetUnfolder]: 25163/42134 cut-off events. [2023-01-28 09:50:20,415 INFO L131 PetriNetUnfolder]: For 1377380/1377380 co-relation queries the response was YES. [2023-01-28 09:50:21,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420804 conditions, 42134 events. 25163/42134 cut-off events. For 1377380/1377380 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 340516 event pairs, 691 based on Foata normal form. 332/42466 useless extension candidates. Maximal degree in co-relation 420655. Up to 18652 conditions per place. [2023-01-28 09:50:21,513 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2593 selfloop transitions, 1584 changer transitions 364/4541 dead transitions. [2023-01-28 09:50:21,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 4541 transitions, 128508 flow [2023-01-28 09:50:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-28 09:50:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-28 09:50:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 6609 transitions. [2023-01-28 09:50:21,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46255599104143336 [2023-01-28 09:50:21,517 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 6609 transitions. [2023-01-28 09:50:21,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 6609 transitions. [2023-01-28 09:50:21,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:50:21,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 6609 transitions. [2023-01-28 09:50:21,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 86.96052631578948) internal successors, (6609), 76 states have internal predecessors, (6609), 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) [2023-01-28 09:50:21,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 188.0) internal successors, (14476), 77 states have internal predecessors, (14476), 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) [2023-01-28 09:50:21,528 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 188.0) internal successors, (14476), 77 states have internal predecessors, (14476), 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) [2023-01-28 09:50:21,528 INFO L175 Difference]: Start difference. First operand has 587 places, 3232 transitions, 87791 flow. Second operand 76 states and 6609 transitions. [2023-01-28 09:50:21,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 4541 transitions, 128508 flow [2023-01-28 09:51:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 4541 transitions, 124176 flow, removed 1941 selfloop flow, removed 43 redundant places. [2023-01-28 09:51:02,935 INFO L231 Difference]: Finished difference. Result has 609 places, 3691 transitions, 104190 flow [2023-01-28 09:51:02,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=84942, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2072, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=104190, PETRI_PLACES=609, PETRI_TRANSITIONS=3691} [2023-01-28 09:51:02,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 579 predicate places. [2023-01-28 09:51:02,941 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 3691 transitions, 104190 flow [2023-01-28 09:51:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 81.66666666666667) internal successors, (2450), 30 states have internal predecessors, (2450), 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) [2023-01-28 09:51:02,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:51:02,942 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:51:02,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 09:51:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 09:51:03,147 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:51:03,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:51:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -593558814, now seen corresponding path program 15 times [2023-01-28 09:51:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:51:03,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126925999] [2023-01-28 09:51:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:51:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:51:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:51:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:51:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:51:03,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126925999] [2023-01-28 09:51:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126925999] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:51:03,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311562812] [2023-01-28 09:51:03,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:51:03,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:51:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:51:03,706 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:51:03,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 09:51:03,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-28 09:51:03,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:51:03,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 09:51:03,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:51:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:51:04,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:51:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:51:05,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311562812] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:51:05,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:51:05,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-01-28 09:51:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363105553] [2023-01-28 09:51:05,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:51:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 09:51:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:51:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 09:51:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2023-01-28 09:51:05,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-01-28 09:51:05,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 3691 transitions, 104190 flow. Second operand has 30 states, 30 states have (on average 79.53333333333333) internal successors, (2386), 30 states have internal predecessors, (2386), 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) [2023-01-28 09:51:05,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:51:05,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-01-28 09:51:05,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:51:49,635 INFO L130 PetriNetUnfolder]: 28725/48072 cut-off events. [2023-01-28 09:51:49,635 INFO L131 PetriNetUnfolder]: For 1618270/1618270 co-relation queries the response was YES. [2023-01-28 09:51:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492885 conditions, 48072 events. 28725/48072 cut-off events. For 1618270/1618270 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 394065 event pairs, 673 based on Foata normal form. 420/48492 useless extension candidates. Maximal degree in co-relation 492735. Up to 17577 conditions per place. [2023-01-28 09:51:50,907 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 2580 selfloop transitions, 2252 changer transitions 518/5350 dead transitions. [2023-01-28 09:51:50,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 5350 transitions, 158597 flow [2023-01-28 09:51:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-01-28 09:51:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-01-28 09:51:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 10050 transitions. [2023-01-28 09:51:50,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454787234042553 [2023-01-28 09:51:50,913 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 10050 transitions. [2023-01-28 09:51:50,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 10050 transitions. [2023-01-28 09:51:50,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:51:50,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 10050 transitions. [2023-01-28 09:51:50,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 83.75) internal successors, (10050), 120 states have internal predecessors, (10050), 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) [2023-01-28 09:51:50,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 188.0) internal successors, (22748), 121 states have internal predecessors, (22748), 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) [2023-01-28 09:51:50,932 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 188.0) internal successors, (22748), 121 states have internal predecessors, (22748), 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) [2023-01-28 09:51:50,932 INFO L175 Difference]: Start difference. First operand has 609 places, 3691 transitions, 104190 flow. Second operand 120 states and 10050 transitions. [2023-01-28 09:51:50,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 5350 transitions, 158597 flow [2023-01-28 09:52:37,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 5350 transitions, 151455 flow, removed 3347 selfloop flow, removed 36 redundant places. [2023-01-28 09:52:37,272 INFO L231 Difference]: Finished difference. Result has 746 places, 4291 transitions, 127623 flow [2023-01-28 09:52:37,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=99648, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1672, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=127623, PETRI_PLACES=746, PETRI_TRANSITIONS=4291} [2023-01-28 09:52:37,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 716 predicate places. [2023-01-28 09:52:37,275 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 4291 transitions, 127623 flow [2023-01-28 09:52:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 79.53333333333333) internal successors, (2386), 30 states have internal predecessors, (2386), 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) [2023-01-28 09:52:37,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:52:37,276 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:52:37,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 09:52:37,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 09:52:37,478 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:52:37,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:52:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 337057471, now seen corresponding path program 16 times [2023-01-28 09:52:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:52:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244477265] [2023-01-28 09:52:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:52:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:52:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:52:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:52:38,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:52:38,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244477265] [2023-01-28 09:52:38,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244477265] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:52:38,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551408120] [2023-01-28 09:52:38,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:52:38,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:52:38,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:52:38,125 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:52:38,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 09:52:38,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:52:38,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:52:38,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 09:52:38,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:52:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:52:38,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:52:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:52:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551408120] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:52:40,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:52:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-01-28 09:52:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244369010] [2023-01-28 09:52:40,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:52:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 09:52:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:52:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 09:52:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2023-01-28 09:52:40,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:52:40,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 4291 transitions, 127623 flow. Second operand has 31 states, 31 states have (on average 81.58064516129032) internal successors, (2529), 31 states have internal predecessors, (2529), 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) [2023-01-28 09:52:40,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:52:40,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:52:40,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:53:53,390 INFO L130 PetriNetUnfolder]: 34899/58762 cut-off events. [2023-01-28 09:53:53,390 INFO L131 PetriNetUnfolder]: For 3515107/3515107 co-relation queries the response was YES. [2023-01-28 09:53:55,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682992 conditions, 58762 events. 34899/58762 cut-off events. For 3515107/3515107 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 499838 event pairs, 771 based on Foata normal form. 436/59198 useless extension candidates. Maximal degree in co-relation 682784. Up to 20835 conditions per place. [2023-01-28 09:53:55,703 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 3289 selfloop transitions, 2435 changer transitions 1134/6858 dead transitions. [2023-01-28 09:53:55,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 6858 transitions, 214465 flow [2023-01-28 09:53:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-01-28 09:53:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-01-28 09:53:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 10902 transitions. [2023-01-28 09:53:55,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46391489361702126 [2023-01-28 09:53:55,709 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 10902 transitions. [2023-01-28 09:53:55,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 10902 transitions. [2023-01-28 09:53:55,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:53:55,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 10902 transitions. [2023-01-28 09:53:55,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 87.216) internal successors, (10902), 125 states have internal predecessors, (10902), 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) [2023-01-28 09:53:55,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 188.0) internal successors, (23688), 126 states have internal predecessors, (23688), 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) [2023-01-28 09:53:55,727 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 188.0) internal successors, (23688), 126 states have internal predecessors, (23688), 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) [2023-01-28 09:53:55,727 INFO L175 Difference]: Start difference. First operand has 746 places, 4291 transitions, 127623 flow. Second operand 125 states and 10902 transitions. [2023-01-28 09:53:55,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 6858 transitions, 214465 flow [2023-01-28 09:55:40,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 6858 transitions, 202458 flow, removed 5668 selfloop flow, removed 82 redundant places. [2023-01-28 09:55:40,890 INFO L231 Difference]: Finished difference. Result has 774 places, 5046 transitions, 157473 flow [2023-01-28 09:55:40,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=122945, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1703, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=157473, PETRI_PLACES=774, PETRI_TRANSITIONS=5046} [2023-01-28 09:55:40,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 744 predicate places. [2023-01-28 09:55:40,893 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 5046 transitions, 157473 flow [2023-01-28 09:55:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 81.58064516129032) internal successors, (2529), 31 states have internal predecessors, (2529), 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) [2023-01-28 09:55:40,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:55:40,894 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:55:40,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 09:55:41,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:55:41,099 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:55:41,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:55:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash 624498002, now seen corresponding path program 17 times [2023-01-28 09:55:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:55:41,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667880962] [2023-01-28 09:55:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:55:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:55:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:55:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:55:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:55:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667880962] [2023-01-28 09:55:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667880962] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:55:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665624119] [2023-01-28 09:55:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:55:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:55:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:55:41,576 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:55:41,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 09:55:41,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-01-28 09:55:41,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:55:41,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 09:55:41,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:55:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:55:42,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:55:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:55:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665624119] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:55:43,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:55:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-01-28 09:55:43,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290272436] [2023-01-28 09:55:43,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:55:43,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 09:55:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:55:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 09:55:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2023-01-28 09:55:43,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-28 09:55:43,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 5046 transitions, 157473 flow. Second operand has 31 states, 31 states have (on average 81.61290322580645) internal successors, (2530), 31 states have internal predecessors, (2530), 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) [2023-01-28 09:55:43,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:55:43,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-28 09:55:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:09,243 INFO L130 PetriNetUnfolder]: 38272/64531 cut-off events. [2023-01-28 09:57:09,244 INFO L131 PetriNetUnfolder]: For 3613766/3613766 co-relation queries the response was YES. [2023-01-28 09:57:11,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724395 conditions, 64531 events. 38272/64531 cut-off events. For 3613766/3613766 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 554636 event pairs, 841 based on Foata normal form. 650/65181 useless extension candidates. Maximal degree in co-relation 724202. Up to 25848 conditions per place. [2023-01-28 09:57:11,689 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 3416 selfloop transitions, 2350 changer transitions 1399/7165 dead transitions. [2023-01-28 09:57:11,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 7165 transitions, 231482 flow [2023-01-28 09:57:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-01-28 09:57:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2023-01-28 09:57:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 8176 transitions. [2023-01-28 09:57:11,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626527840651879 [2023-01-28 09:57:11,694 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 8176 transitions. [2023-01-28 09:57:11,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 8176 transitions. [2023-01-28 09:57:11,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:11,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 8176 transitions. [2023-01-28 09:57:11,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 86.97872340425532) internal successors, (8176), 94 states have internal predecessors, (8176), 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) [2023-01-28 09:57:11,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 188.0) internal successors, (17860), 95 states have internal predecessors, (17860), 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) [2023-01-28 09:57:11,707 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 188.0) internal successors, (17860), 95 states have internal predecessors, (17860), 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) [2023-01-28 09:57:11,707 INFO L175 Difference]: Start difference. First operand has 774 places, 5046 transitions, 157473 flow. Second operand 94 states and 8176 transitions. [2023-01-28 09:57:11,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 7165 transitions, 231482 flow Received shutdown request... [2023-01-28 09:57:44,593 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:57:44,593 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:57:44,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:57:44,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-01-28 09:57:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 09:57:44,814 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 09:57:44,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:57:44,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:57:44,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:57:44,815 INFO L445 BasicCegarLoop]: Path program histogram: [17, 6, 5, 1] [2023-01-28 09:57:44,817 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:57:44,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:57:44,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:57:44 BasicIcfg [2023-01-28 09:57:44,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:57:44,819 INFO L158 Benchmark]: Toolchain (without parser) took 823811.75ms. Allocated memory was 343.9MB in the beginning and 7.4GB in the end (delta: 7.0GB). Free memory was 296.2MB in the beginning and 2.3GB in the end (delta: -2.0GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-01-28 09:57:44,820 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 343.9MB. Free memory is still 292.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:57:44,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.93ms. Allocated memory is still 343.9MB. Free memory was 296.2MB in the beginning and 284.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:57:44,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.03ms. Allocated memory is still 343.9MB. Free memory was 284.7MB in the beginning and 282.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:44,820 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 343.9MB. Free memory was 282.9MB in the beginning and 281.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:44,820 INFO L158 Benchmark]: RCFGBuilder took 576.60ms. Allocated memory is still 343.9MB. Free memory was 281.5MB in the beginning and 261.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 09:57:44,820 INFO L158 Benchmark]: TraceAbstraction took 822957.41ms. Allocated memory was 343.9MB in the beginning and 7.4GB in the end (delta: 7.0GB). Free memory was 260.9MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-01-28 09:57:44,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 343.9MB. Free memory is still 292.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 189.93ms. Allocated memory is still 343.9MB. Free memory was 296.2MB in the beginning and 284.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.03ms. Allocated memory is still 343.9MB. Free memory was 284.7MB in the beginning and 282.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 343.9MB. Free memory was 282.9MB in the beginning and 281.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 576.60ms. Allocated memory is still 343.9MB. Free memory was 281.5MB in the beginning and 261.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 822957.41ms. Allocated memory was 343.9MB in the beginning and 7.4GB in the end (delta: 7.0GB). Free memory was 260.9MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 99 PlacesBefore, 30 PlacesAfterwards, 96 TransitionsBefore, 22 TransitionsAfterwards, 1370 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1979 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1535, independent: 1491, independent conditional: 0, independent unconditional: 1491, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 738, independent: 723, independent conditional: 0, independent unconditional: 723, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1535, independent: 768, independent conditional: 0, independent unconditional: 768, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 738, unknown conditional: 0, unknown unconditional: 738] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 134 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 822.9s, OverallIterations: 29, TraceHistogramMax: 6, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 779.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13787 SdHoareTripleChecker+Valid, 16.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13787 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 14.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 835 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32862 IncrementalHoareTripleChecker+Invalid, 33697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 835 mSolverCounterUnsat, 20 mSDtfsCounter, 32862 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2551 GetRequests, 803 SyntacticMatches, 22 SemanticMatches, 1726 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57074 ImplicationChecksByTransitivity, 51.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157473occurred in iteration=28, InterpolantAutomatonStates: 1355, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 33.3s InterpolantComputationTime, 1274 NumberOfCodeBlocks, 1274 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 1757 ConstructedInterpolants, 0 QuantifiedInterpolants, 33535 SizeOfPredicates, 526 NumberOfNonLiveVariables, 3384 ConjunctsInSsa, 296 ConjunctsInUnsatCore, 69 InterpolantComputations, 9 PerfectInterpolantSequences, 204/970 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 could not prove your program: Timeout Completed graceful shutdown