/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:46:19,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:46:19,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:46:19,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:46:19,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:46:19,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:46:19,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:46:19,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:46:19,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:46:19,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:46:19,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:46:19,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:46:19,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:46:19,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:46:19,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:46:19,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:46:19,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:46:19,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:46:19,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:46:19,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:46:19,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:46:19,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:46:19,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:46:19,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:46:19,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:46:19,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:46:19,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:46:19,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:46:19,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:46:19,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 02:46:19,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:46:19,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:46:19,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:46:19,710 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 02:46:19,740 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:46:19,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:46:19,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:46:19,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:46:19,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:46:19,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:46:19,742 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:46:19,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:46:19,743 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:46:19,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:46:19,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:46:19,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:46:19,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:46:19,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:46:19,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:46:19,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:46:19,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:46:19,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:46:19,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:46:19,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:46:19,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:46:19,992 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:46:19,992 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:46:19,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-01-28 02:46:21,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:46:21,307 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:46:21,308 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-01-28 02:46:21,318 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfc5042e/5b36fdebd8f241bda8ee0dab2f373741/FLAGc06d75539 [2023-01-28 02:46:21,335 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfc5042e/5b36fdebd8f241bda8ee0dab2f373741 [2023-01-28 02:46:21,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:46:21,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:46:21,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:46:21,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:46:21,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:46:21,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e631d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21, skipping insertion in model container [2023-01-28 02:46:21,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:46:21,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:46:21,550 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/chl-node-trans.wvr.c[3945,3958] [2023-01-28 02:46:21,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:46:21,576 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:46:21,604 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/chl-node-trans.wvr.c[3945,3958] [2023-01-28 02:46:21,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:46:21,623 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:46:21,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21 WrapperNode [2023-01-28 02:46:21,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:46:21,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:46:21,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:46:21,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:46:21,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,695 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-01-28 02:46:21,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:46:21,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:46:21,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:46:21,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:46:21,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:46:21,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:46:21,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:46:21,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:46:21,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (1/1) ... [2023-01-28 02:46:21,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:46:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:46:21,764 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 02:46:21,767 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 02:46:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:46:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:46:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:46:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:46:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:46:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:46:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:46:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:46:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:46:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:46:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:46:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:46:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:46:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:46:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:46:21,797 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 02:46:21,931 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:46:21,933 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:46:22,511 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:46:22,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:46:22,530 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 02:46:22,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:46:22 BoogieIcfgContainer [2023-01-28 02:46:22,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:46:22,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:46:22,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:46:22,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:46:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:46:21" (1/3) ... [2023-01-28 02:46:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a871151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:46:22, skipping insertion in model container [2023-01-28 02:46:22,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:46:21" (2/3) ... [2023-01-28 02:46:22,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a871151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:46:22, skipping insertion in model container [2023-01-28 02:46:22,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:46:22" (3/3) ... [2023-01-28 02:46:22,542 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-01-28 02:46:22,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:46:22,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:46:22,556 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:46:22,673 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:46:22,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 02:46:22,916 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-01-28 02:46:22,917 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:46:22,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 02:46:22,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 02:46:22,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-01-28 02:46:22,942 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:46:22,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 02:46:22,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 02:46:22,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-01-28 02:46:23,048 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-01-28 02:46:23,049 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:46:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 02:46:23,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-01-28 02:46:38,175 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-01-28 02:46:38,175 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-01-28 02:46:38,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:46:38,193 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;@6eee86cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:46:38,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 02:46:38,202 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-01-28 02:46:38,202 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:46:38,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:38,203 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, 1, 1, 1, 1, 1] [2023-01-28 02:46:38,203 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 02:46:38,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:38,207 INFO L85 PathProgramCache]: Analyzing trace with hash 558250822, now seen corresponding path program 1 times [2023-01-28 02:46:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:38,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712282339] [2023-01-28 02:46:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:38,439 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 02:46:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:38,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712282339] [2023-01-28 02:46:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712282339] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:38,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:38,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:46:38,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141559823] [2023-01-28 02:46:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 02:46:38,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 02:46:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 02:46:38,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-01-28 02:46:38,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 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 02:46:38,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:38,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-01-28 02:46:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:38,685 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-01-28 02:46:38,686 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-28 02:46:38,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-01-28 02:46:38,692 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-01-28 02:46:38,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-01-28 02:46:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 02:46:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 02:46:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-01-28 02:46:38,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-01-28 02:46:38,711 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-01-28 02:46:38,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-01-28 02:46:38,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:38,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-01-28 02:46:38,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 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 02:46:38,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 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 02:46:38,731 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 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 02:46:38,732 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-01-28 02:46:38,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-01-28 02:46:38,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:46:38,738 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-01-28 02:46:38,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-01-28 02:46:38,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 02:46:38,744 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-01-28 02:46:38,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 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 02:46:38,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:38,745 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:46:38,746 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 02:46:38,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-01-28 02:46:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684605372] [2023-01-28 02:46:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:38,964 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 02:46:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684605372] [2023-01-28 02:46:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684605372] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:38,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:46:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81405870] [2023-01-28 02:46:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:46:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:46:38,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:46:38,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-01-28 02:46:38,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 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 02:46:38,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:38,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-01-28 02:46:38,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:39,187 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-01-28 02:46:39,188 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 02:46:39,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-01-28 02:46:39,192 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 02:46:39,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-01-28 02:46:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:46:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:46:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-01-28 02:46:39,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-01-28 02:46:39,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-01-28 02:46:39,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-01-28 02:46:39,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:39,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-01-28 02:46:39,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 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 02:46:39,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:46:39,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:46:39,207 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-01-28 02:46:39,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-01-28 02:46:39,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:46:39,209 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-01-28 02:46:39,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-01-28 02:46:39,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-01-28 02:46:39,211 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-01-28 02:46:39,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 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 02:46:39,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:39,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:39,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:46:39,212 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 02:46:39,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-01-28 02:46:39,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:39,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526191979] [2023-01-28 02:46:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:39,466 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 02:46:39,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526191979] [2023-01-28 02:46:39,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526191979] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:46:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272302520] [2023-01-28 02:46:39,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:39,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:46:39,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:46:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:46:39,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 1064 [2023-01-28 02:46:39,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 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 02:46:39,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:39,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 1064 [2023-01-28 02:46:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:39,650 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-01-28 02:46:39,650 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-01-28 02:46:39,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-01-28 02:46:39,657 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 02:46:39,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-01-28 02:46:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:46:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:46:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2023-01-28 02:46:39,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41948621553884713 [2023-01-28 02:46:39,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2023-01-28 02:46:39,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2023-01-28 02:46:39,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:39,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2023-01-28 02:46:39,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 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 02:46:39,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:46:39,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:46:39,709 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1339 transitions. [2023-01-28 02:46:39,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-01-28 02:46:39,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:39,714 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-01-28 02:46:39,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-28 02:46:39,716 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-01-28 02:46:39,719 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-01-28 02:46:39,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 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 02:46:39,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:39,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:39,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 02:46:39,721 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 02:46:39,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-01-28 02:46:39,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:39,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276011578] [2023-01-28 02:46:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:39,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:46:39,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:39,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276011578] [2023-01-28 02:46:39,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276011578] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:39,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:39,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:46:39,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129440207] [2023-01-28 02:46:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:46:39,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:46:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:46:39,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 02:46:39,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 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 02:46:39,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:39,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 02:46:39,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:40,090 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-01-28 02:46:40,090 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 02:46:40,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-01-28 02:46:40,096 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-01-28 02:46:40,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-01-28 02:46:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:46:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:46:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-01-28 02:46:40,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40484022556390975 [2023-01-28 02:46:40,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-01-28 02:46:40,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-01-28 02:46:40,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:40,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-01-28 02:46:40,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 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 02:46:40,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:40,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:40,113 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1723 transitions. [2023-01-28 02:46:40,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-01-28 02:46:40,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:46:40,116 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-01-28 02:46:40,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-28 02:46:40,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-01-28 02:46:40,122 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-01-28 02:46:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 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 02:46:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:40,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:40,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:46:40,124 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 02:46:40,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:40,125 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-01-28 02:46:40,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:40,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503200096] [2023-01-28 02:46:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:46:40,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:40,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503200096] [2023-01-28 02:46:40,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503200096] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:40,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:40,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:46:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374987787] [2023-01-28 02:46:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:40,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:46:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:46:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:46:40,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 02:46:40,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 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 02:46:40,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:40,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 02:46:40,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:40,508 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-01-28 02:46:40,508 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 02:46:40,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-01-28 02:46:40,514 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-01-28 02:46:40,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-01-28 02:46:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:46:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:46:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2023-01-28 02:46:40,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050751879699248 [2023-01-28 02:46:40,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2023-01-28 02:46:40,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2023-01-28 02:46:40,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:40,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2023-01-28 02:46:40,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 02:46:40,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:40,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:40,533 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1724 transitions. [2023-01-28 02:46:40,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-01-28 02:46:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:40,537 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-01-28 02:46:40,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-01-28 02:46:40,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-01-28 02:46:40,539 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-01-28 02:46:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 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 02:46:40,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:40,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:40,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:46:40,540 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 02:46:40,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:40,541 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-01-28 02:46:40,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:40,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730544316] [2023-01-28 02:46:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:40,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:46:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730544316] [2023-01-28 02:46:40,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730544316] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:40,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:40,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:46:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035417916] [2023-01-28 02:46:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:46:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:46:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:46:40,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 02:46:40,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 02:46:40,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:40,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 02:46:40,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:40,877 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-01-28 02:46:40,878 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-01-28 02:46:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-01-28 02:46:40,884 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-01-28 02:46:40,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-01-28 02:46:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:46:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:46:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 02:46:40,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 02:46:40,889 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 02:46:40,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 02:46:40,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:40,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 02:46:40,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 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 02:46:40,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:40,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:40,899 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1735 transitions. [2023-01-28 02:46:40,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-01-28 02:46:40,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:40,903 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-01-28 02:46:40,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-28 02:46:40,906 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-01-28 02:46:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-01-28 02:46:40,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 02:46:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:40,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:40,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:46:40,907 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 02:46:40,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-01-28 02:46:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856978172] [2023-01-28 02:46:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:40,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:46:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856978172] [2023-01-28 02:46:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856978172] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:46:41,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200760588] [2023-01-28 02:46:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:41,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:46:41,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:46:41,256 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 02:46:41,286 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 02:46:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:41,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 02:46:41,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:46:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:41,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:46:41,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200760588] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:41,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:46:41,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-01-28 02:46:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948884738] [2023-01-28 02:46:41,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:41,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:46:41,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:46:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:41,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 02:46:41,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 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 02:46:41,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:41,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 02:46:41,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:41,738 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-01-28 02:46:41,738 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 02:46:41,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-01-28 02:46:41,744 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-01-28 02:46:41,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-01-28 02:46:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:46:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:46:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 02:46:41,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 02:46:41,748 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 02:46:41,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 02:46:41,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:41,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 02:46:41,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 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 02:46:41,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:41,770 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:41,770 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1735 transitions. [2023-01-28 02:46:41,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-01-28 02:46:41,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:41,775 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-01-28 02:46:41,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-28 02:46:41,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-01-28 02:46:41,776 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-01-28 02:46:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 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 02:46:41,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:41,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:41,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 02:46:41,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:46:41,982 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 02:46:41,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-01-28 02:46:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142025176] [2023-01-28 02:46:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 02:46:42,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:42,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142025176] [2023-01-28 02:46:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142025176] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:42,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:46:42,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313625839] [2023-01-28 02:46:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:42,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:46:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:42,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:46:42,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:46:42,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 02:46:42,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 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 02:46:42,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:42,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 02:46:42,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:42,347 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-01-28 02:46:42,347 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-28 02:46:42,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-01-28 02:46:42,356 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-01-28 02:46:42,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-01-28 02:46:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:46:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:46:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 02:46:42,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 02:46:42,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 02:46:42,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 02:46:42,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:42,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 02:46:42,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 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 02:46:42,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:42,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 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 02:46:42,380 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1735 transitions. [2023-01-28 02:46:42,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-01-28 02:46:42,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:42,383 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-01-28 02:46:42,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-01-28 02:46:42,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-28 02:46:42,385 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-01-28 02:46:42,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 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 02:46:42,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:42,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 02:46:42,386 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 02:46:42,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-01-28 02:46:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:42,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396415095] [2023-01-28 02:46:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396415095] [2023-01-28 02:46:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396415095] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:44,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 02:46:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617531222] [2023-01-28 02:46:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 02:46:44,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 02:46:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:46:44,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 1064 [2023-01-28 02:46:44,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 338.05882352941177) internal successors, (5747), 17 states have internal predecessors, (5747), 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 02:46:44,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:44,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 1064 [2023-01-28 02:46:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:47,340 INFO L130 PetriNetUnfolder]: 2269/3572 cut-off events. [2023-01-28 02:46:47,340 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-01-28 02:46:47,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8196 conditions, 3572 events. 2269/3572 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19020 event pairs, 402 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 8185. Up to 866 conditions per place. [2023-01-28 02:46:47,358 INFO L137 encePairwiseOnDemand]: 1044/1064 looper letters, 194 selfloop transitions, 62 changer transitions 7/263 dead transitions. [2023-01-28 02:46:47,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 263 transitions, 1256 flow [2023-01-28 02:46:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 02:46:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 02:46:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7307 transitions. [2023-01-28 02:46:47,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32702291442892945 [2023-01-28 02:46:47,379 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7307 transitions. [2023-01-28 02:46:47,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7307 transitions. [2023-01-28 02:46:47,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:47,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7307 transitions. [2023-01-28 02:46:47,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 347.95238095238096) internal successors, (7307), 21 states have internal predecessors, (7307), 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 02:46:47,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 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 02:46:47,433 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 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 02:46:47,434 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 21 states and 7307 transitions. [2023-01-28 02:46:47,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 263 transitions, 1256 flow [2023-01-28 02:46:47,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 263 transitions, 1250 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:47,445 INFO L231 Difference]: Finished difference. Result has 83 places, 116 transitions, 633 flow [2023-01-28 02:46:47,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=633, PETRI_PLACES=83, PETRI_TRANSITIONS=116} [2023-01-28 02:46:47,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-01-28 02:46:47,447 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions, 633 flow [2023-01-28 02:46:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 338.05882352941177) internal successors, (5747), 17 states have internal predecessors, (5747), 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 02:46:47,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:47,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:47,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:46:47,449 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 02:46:47,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-01-28 02:46:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:47,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243663337] [2023-01-28 02:46:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:48,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243663337] [2023-01-28 02:46:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243663337] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:48,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:48,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:46:48,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494766003] [2023-01-28 02:46:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:48,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:46:48,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:46:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:46:48,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 1064 [2023-01-28 02:46:48,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 633 flow. Second operand has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 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 02:46:48,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:48,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 1064 [2023-01-28 02:46:48,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:51,628 INFO L130 PetriNetUnfolder]: 5246/8500 cut-off events. [2023-01-28 02:46:51,628 INFO L131 PetriNetUnfolder]: For 13035/13035 co-relation queries the response was YES. [2023-01-28 02:46:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29269 conditions, 8500 events. 5246/8500 cut-off events. For 13035/13035 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55536 event pairs, 886 based on Foata normal form. 1/8500 useless extension candidates. Maximal degree in co-relation 29246. Up to 2730 conditions per place. [2023-01-28 02:46:51,688 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 295 selfloop transitions, 221 changer transitions 7/523 dead transitions. [2023-01-28 02:46:51,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 523 transitions, 3808 flow [2023-01-28 02:46:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 02:46:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 02:46:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7983 transitions. [2023-01-28 02:46:51,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3572771213748657 [2023-01-28 02:46:51,707 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7983 transitions. [2023-01-28 02:46:51,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7983 transitions. [2023-01-28 02:46:51,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:51,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7983 transitions. [2023-01-28 02:46:51,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 380.14285714285717) internal successors, (7983), 21 states have internal predecessors, (7983), 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 02:46:51,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 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 02:46:51,748 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 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 02:46:51,748 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 633 flow. Second operand 21 states and 7983 transitions. [2023-01-28 02:46:51,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 523 transitions, 3808 flow [2023-01-28 02:46:51,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 523 transitions, 3791 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 02:46:51,907 INFO L231 Difference]: Finished difference. Result has 114 places, 353 transitions, 2987 flow [2023-01-28 02:46:51,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2987, PETRI_PLACES=114, PETRI_TRANSITIONS=353} [2023-01-28 02:46:51,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-01-28 02:46:51,909 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 353 transitions, 2987 flow [2023-01-28 02:46:51,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 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 02:46:51,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:51,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:51,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 02:46:51,911 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 02:46:51,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 438698926, now seen corresponding path program 3 times [2023-01-28 02:46:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:51,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824844374] [2023-01-28 02:46:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:51,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:52,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824844374] [2023-01-28 02:46:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824844374] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:52,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:52,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833620373] [2023-01-28 02:46:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:46:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:46:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:46:52,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:46:52,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 353 transitions, 2987 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:46:52,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:52,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:46:52,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:55,167 INFO L130 PetriNetUnfolder]: 6096/10078 cut-off events. [2023-01-28 02:46:55,167 INFO L131 PetriNetUnfolder]: For 37061/37061 co-relation queries the response was YES. [2023-01-28 02:46:55,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45605 conditions, 10078 events. 6096/10078 cut-off events. For 37061/37061 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 69059 event pairs, 1289 based on Foata normal form. 1/10078 useless extension candidates. Maximal degree in co-relation 45568. Up to 4742 conditions per place. [2023-01-28 02:46:55,260 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 606 selfloop transitions, 77 changer transitions 7/690 dead transitions. [2023-01-28 02:46:55,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 690 transitions, 7251 flow [2023-01-28 02:46:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3613 transitions. [2023-01-28 02:46:55,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.377297410192147 [2023-01-28 02:46:55,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3613 transitions. [2023-01-28 02:46:55,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3613 transitions. [2023-01-28 02:46:55,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:55,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3613 transitions. [2023-01-28 02:46:55,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.44444444444446) internal successors, (3613), 9 states have internal predecessors, (3613), 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 02:46:55,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:46:55,285 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:46:55,285 INFO L175 Difference]: Start difference. First operand has 114 places, 353 transitions, 2987 flow. Second operand 9 states and 3613 transitions. [2023-01-28 02:46:55,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 690 transitions, 7251 flow [2023-01-28 02:46:55,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 690 transitions, 7177 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-01-28 02:46:55,814 INFO L231 Difference]: Finished difference. Result has 127 places, 363 transitions, 3275 flow [2023-01-28 02:46:55,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3275, PETRI_PLACES=127, PETRI_TRANSITIONS=363} [2023-01-28 02:46:55,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 02:46:55,814 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 363 transitions, 3275 flow [2023-01-28 02:46:55,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:46:55,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:55,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:55,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:46:55,817 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 02:46:55,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:55,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1462585081, now seen corresponding path program 1 times [2023-01-28 02:46:55,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:55,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008915460] [2023-01-28 02:46:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:55,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:56,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:56,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008915460] [2023-01-28 02:46:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008915460] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:46:56,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517981022] [2023-01-28 02:46:56,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:46:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:46:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:46:56,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1064 [2023-01-28 02:46:56,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 363 transitions, 3275 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 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 02:46:56,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:56,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1064 [2023-01-28 02:46:56,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:58,316 INFO L130 PetriNetUnfolder]: 7129/12371 cut-off events. [2023-01-28 02:46:58,316 INFO L131 PetriNetUnfolder]: For 50717/50717 co-relation queries the response was YES. [2023-01-28 02:46:58,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56389 conditions, 12371 events. 7129/12371 cut-off events. For 50717/50717 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 94297 event pairs, 2708 based on Foata normal form. 181/12551 useless extension candidates. Maximal degree in co-relation 56345. Up to 8320 conditions per place. [2023-01-28 02:46:58,420 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 502 selfloop transitions, 37 changer transitions 0/539 dead transitions. [2023-01-28 02:46:58,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 539 transitions, 5981 flow [2023-01-28 02:46:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:46:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:46:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1335 transitions. [2023-01-28 02:46:58,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182330827067669 [2023-01-28 02:46:58,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1335 transitions. [2023-01-28 02:46:58,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1335 transitions. [2023-01-28 02:46:58,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:58,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1335 transitions. [2023-01-28 02:46:58,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 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 02:46:58,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:46:58,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:46:58,431 INFO L175 Difference]: Start difference. First operand has 127 places, 363 transitions, 3275 flow. Second operand 3 states and 1335 transitions. [2023-01-28 02:46:58,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 539 transitions, 5981 flow [2023-01-28 02:46:59,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 539 transitions, 5860 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:59,066 INFO L231 Difference]: Finished difference. Result has 127 places, 369 transitions, 3389 flow [2023-01-28 02:46:59,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3389, PETRI_PLACES=127, PETRI_TRANSITIONS=369} [2023-01-28 02:46:59,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 02:46:59,067 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 369 transitions, 3389 flow [2023-01-28 02:46:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 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 02:46:59,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:59,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:59,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:46:59,068 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 02:46:59,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2026890830, now seen corresponding path program 4 times [2023-01-28 02:46:59,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:59,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516087569] [2023-01-28 02:46:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:59,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516087569] [2023-01-28 02:46:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516087569] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:46:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855782548] [2023-01-28 02:46:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:46:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:46:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:46:59,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1064 [2023-01-28 02:46:59,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 369 transitions, 3389 flow. Second operand has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 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 02:46:59,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:59,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1064 [2023-01-28 02:46:59,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:02,763 INFO L130 PetriNetUnfolder]: 8219/14587 cut-off events. [2023-01-28 02:47:02,763 INFO L131 PetriNetUnfolder]: For 56399/56399 co-relation queries the response was YES. [2023-01-28 02:47:02,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66673 conditions, 14587 events. 8219/14587 cut-off events. For 56399/56399 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 117520 event pairs, 1221 based on Foata normal form. 2/14588 useless extension candidates. Maximal degree in co-relation 66629. Up to 6191 conditions per place. [2023-01-28 02:47:02,866 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 659 selfloop transitions, 78 changer transitions 7/744 dead transitions. [2023-01-28 02:47:02,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 744 transitions, 8186 flow [2023-01-28 02:47:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:47:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:47:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4230 transitions. [2023-01-28 02:47:02,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3614149008885851 [2023-01-28 02:47:02,874 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4230 transitions. [2023-01-28 02:47:02,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4230 transitions. [2023-01-28 02:47:02,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:02,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4230 transitions. [2023-01-28 02:47:02,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 384.54545454545456) internal successors, (4230), 11 states have internal predecessors, (4230), 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 02:47:02,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 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 02:47:02,890 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 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 02:47:02,890 INFO L175 Difference]: Start difference. First operand has 127 places, 369 transitions, 3389 flow. Second operand 11 states and 4230 transitions. [2023-01-28 02:47:02,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 744 transitions, 8186 flow [2023-01-28 02:47:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 744 transitions, 8107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:47:03,514 INFO L231 Difference]: Finished difference. Result has 142 places, 380 transitions, 3717 flow [2023-01-28 02:47:03,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3717, PETRI_PLACES=142, PETRI_TRANSITIONS=380} [2023-01-28 02:47:03,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2023-01-28 02:47:03,515 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 380 transitions, 3717 flow [2023-01-28 02:47:03,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 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 02:47:03,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:03,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 02:47:03,516 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 02:47:03,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 5 times [2023-01-28 02:47:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:03,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477276846] [2023-01-28 02:47:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477276846] [2023-01-28 02:47:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477276846] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:04,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:47:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715434458] [2023-01-28 02:47:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:47:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:47:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:47:04,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:47:04,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 380 transitions, 3717 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:47:04,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:04,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:47:04,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:07,818 INFO L130 PetriNetUnfolder]: 8453/15378 cut-off events. [2023-01-28 02:47:07,818 INFO L131 PetriNetUnfolder]: For 71719/71719 co-relation queries the response was YES. [2023-01-28 02:47:07,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72155 conditions, 15378 events. 8453/15378 cut-off events. For 71719/71719 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 128508 event pairs, 2359 based on Foata normal form. 1/15378 useless extension candidates. Maximal degree in co-relation 72105. Up to 7695 conditions per place. [2023-01-28 02:47:07,932 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 476 selfloop transitions, 48 changer transitions 8/532 dead transitions. [2023-01-28 02:47:07,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 532 transitions, 6034 flow [2023-01-28 02:47:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:47:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:47:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3615 transitions. [2023-01-28 02:47:07,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3775062656641604 [2023-01-28 02:47:07,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3615 transitions. [2023-01-28 02:47:07,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3615 transitions. [2023-01-28 02:47:07,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:07,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3615 transitions. [2023-01-28 02:47:07,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.6666666666667) internal successors, (3615), 9 states have internal predecessors, (3615), 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 02:47:07,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:47:07,955 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:47:07,955 INFO L175 Difference]: Start difference. First operand has 142 places, 380 transitions, 3717 flow. Second operand 9 states and 3615 transitions. [2023-01-28 02:47:07,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 532 transitions, 6034 flow [2023-01-28 02:47:08,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 532 transitions, 5973 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-28 02:47:08,745 INFO L231 Difference]: Finished difference. Result has 150 places, 394 transitions, 3979 flow [2023-01-28 02:47:08,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3979, PETRI_PLACES=150, PETRI_TRANSITIONS=394} [2023-01-28 02:47:08,746 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-01-28 02:47:08,746 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 394 transitions, 3979 flow [2023-01-28 02:47:08,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:47:08,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:08,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:08,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 02:47:08,747 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 02:47:08,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1165735616, now seen corresponding path program 6 times [2023-01-28 02:47:08,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206298520] [2023-01-28 02:47:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:08,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206298520] [2023-01-28 02:47:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206298520] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:09,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:09,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:47:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069614314] [2023-01-28 02:47:09,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:09,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:47:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:47:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:47:09,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-28 02:47:09,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 394 transitions, 3979 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 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 02:47:09,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:09,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-28 02:47:09,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:14,624 INFO L130 PetriNetUnfolder]: 14218/26052 cut-off events. [2023-01-28 02:47:14,624 INFO L131 PetriNetUnfolder]: For 135566/135566 co-relation queries the response was YES. [2023-01-28 02:47:14,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124384 conditions, 26052 events. 14218/26052 cut-off events. For 135566/135566 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 237832 event pairs, 5116 based on Foata normal form. 2/26053 useless extension candidates. Maximal degree in co-relation 124330. Up to 12972 conditions per place. [2023-01-28 02:47:14,830 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 845 selfloop transitions, 76 changer transitions 7/928 dead transitions. [2023-01-28 02:47:14,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 928 transitions, 11055 flow [2023-01-28 02:47:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:47:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:47:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3804 transitions. [2023-01-28 02:47:14,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575187969924812 [2023-01-28 02:47:14,836 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3804 transitions. [2023-01-28 02:47:14,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3804 transitions. [2023-01-28 02:47:14,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:14,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3804 transitions. [2023-01-28 02:47:14,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.4) internal successors, (3804), 10 states have internal predecessors, (3804), 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 02:47:14,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 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 02:47:14,848 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 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 02:47:14,848 INFO L175 Difference]: Start difference. First operand has 150 places, 394 transitions, 3979 flow. Second operand 10 states and 3804 transitions. [2023-01-28 02:47:14,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 928 transitions, 11055 flow [2023-01-28 02:47:16,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 928 transitions, 10907 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:16,992 INFO L231 Difference]: Finished difference. Result has 162 places, 454 transitions, 5059 flow [2023-01-28 02:47:16,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5059, PETRI_PLACES=162, PETRI_TRANSITIONS=454} [2023-01-28 02:47:16,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2023-01-28 02:47:16,993 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 454 transitions, 5059 flow [2023-01-28 02:47:16,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 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 02:47:16,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:16,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:16,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 02:47:16,994 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 02:47:16,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1788906114, now seen corresponding path program 7 times [2023-01-28 02:47:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935301626] [2023-01-28 02:47:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:17,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935301626] [2023-01-28 02:47:17,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935301626] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:17,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:17,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:47:17,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472271244] [2023-01-28 02:47:17,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:17,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:47:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:17,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:47:17,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:47:17,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:47:17,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 454 transitions, 5059 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:47:17,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:17,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:47:17,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:23,396 INFO L130 PetriNetUnfolder]: 15648/28811 cut-off events. [2023-01-28 02:47:23,397 INFO L131 PetriNetUnfolder]: For 176467/176467 co-relation queries the response was YES. [2023-01-28 02:47:23,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142018 conditions, 28811 events. 15648/28811 cut-off events. For 176467/176467 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 268566 event pairs, 4073 based on Foata normal form. 1/28811 useless extension candidates. Maximal degree in co-relation 141958. Up to 14575 conditions per place. [2023-01-28 02:47:23,660 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 610 selfloop transitions, 69 changer transitions 8/687 dead transitions. [2023-01-28 02:47:23,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 687 transitions, 8629 flow [2023-01-28 02:47:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:47:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:47:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-28 02:47:23,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-28 02:47:23,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-28 02:47:23,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-28 02:47:23,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:23,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-28 02:47:23,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 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 02:47:23,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:47:23,675 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:47:23,675 INFO L175 Difference]: Start difference. First operand has 162 places, 454 transitions, 5059 flow. Second operand 9 states and 3631 transitions. [2023-01-28 02:47:23,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 687 transitions, 8629 flow [2023-01-28 02:47:26,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 687 transitions, 8535 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:26,244 INFO L231 Difference]: Finished difference. Result has 172 places, 480 transitions, 5549 flow [2023-01-28 02:47:26,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5549, PETRI_PLACES=172, PETRI_TRANSITIONS=480} [2023-01-28 02:47:26,244 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-01-28 02:47:26,244 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 480 transitions, 5549 flow [2023-01-28 02:47:26,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:47:26,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:26,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:26,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 02:47:26,245 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 02:47:26,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash 977259368, now seen corresponding path program 8 times [2023-01-28 02:47:26,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:26,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88493933] [2023-01-28 02:47:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:27,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88493933] [2023-01-28 02:47:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88493933] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 02:47:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964771629] [2023-01-28 02:47:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:27,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 02:47:27,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 02:47:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 02:47:27,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1064 [2023-01-28 02:47:27,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 480 transitions, 5549 flow. Second operand has 15 states, 15 states have (on average 349.3333333333333) internal successors, (5240), 15 states have internal predecessors, (5240), 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 02:47:27,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:27,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1064 [2023-01-28 02:47:27,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:35,171 INFO L130 PetriNetUnfolder]: 18518/34214 cut-off events. [2023-01-28 02:47:35,171 INFO L131 PetriNetUnfolder]: For 225443/225443 co-relation queries the response was YES. [2023-01-28 02:47:35,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172078 conditions, 34214 events. 18518/34214 cut-off events. For 225443/225443 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 328469 event pairs, 4128 based on Foata normal form. 4/34217 useless extension candidates. Maximal degree in co-relation 172013. Up to 9992 conditions per place. [2023-01-28 02:47:35,674 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 578 selfloop transitions, 600 changer transitions 8/1186 dead transitions. [2023-01-28 02:47:35,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1186 transitions, 14932 flow [2023-01-28 02:47:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 02:47:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 02:47:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7546 transitions. [2023-01-28 02:47:35,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33771929824561403 [2023-01-28 02:47:35,684 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7546 transitions. [2023-01-28 02:47:35,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7546 transitions. [2023-01-28 02:47:35,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:35,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7546 transitions. [2023-01-28 02:47:35,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 359.3333333333333) internal successors, (7546), 21 states have internal predecessors, (7546), 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 02:47:35,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 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 02:47:35,713 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 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 02:47:35,714 INFO L175 Difference]: Start difference. First operand has 172 places, 480 transitions, 5549 flow. Second operand 21 states and 7546 transitions. [2023-01-28 02:47:35,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 1186 transitions, 14932 flow [2023-01-28 02:47:39,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1186 transitions, 14698 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:39,168 INFO L231 Difference]: Finished difference. Result has 201 places, 844 transitions, 11876 flow [2023-01-28 02:47:39,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5437, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11876, PETRI_PLACES=201, PETRI_TRANSITIONS=844} [2023-01-28 02:47:39,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2023-01-28 02:47:39,169 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 844 transitions, 11876 flow [2023-01-28 02:47:39,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 349.3333333333333) internal successors, (5240), 15 states have internal predecessors, (5240), 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 02:47:39,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:39,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:39,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 02:47:39,170 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 02:47:39,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1362034862, now seen corresponding path program 9 times [2023-01-28 02:47:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:39,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034632884] [2023-01-28 02:47:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:39,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:39,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:39,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034632884] [2023-01-28 02:47:39,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034632884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:39,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:39,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:47:39,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076060431] [2023-01-28 02:47:39,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:39,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:47:39,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:47:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:47:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:47:39,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 844 transitions, 11876 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:47:39,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:39,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:47:39,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:49,584 INFO L130 PetriNetUnfolder]: 20471/37978 cut-off events. [2023-01-28 02:47:49,584 INFO L131 PetriNetUnfolder]: For 366447/366447 co-relation queries the response was YES. [2023-01-28 02:47:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218306 conditions, 37978 events. 20471/37978 cut-off events. For 366447/366447 co-relation queries the response was YES. Maximal size of possible extension queue 2499. Compared 370305 event pairs, 6191 based on Foata normal form. 1/37978 useless extension candidates. Maximal degree in co-relation 218229. Up to 18558 conditions per place. [2023-01-28 02:47:50,054 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 1062 selfloop transitions, 95 changer transitions 7/1164 dead transitions. [2023-01-28 02:47:50,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1164 transitions, 17871 flow [2023-01-28 02:47:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:47:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:47:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3643 transitions. [2023-01-28 02:47:50,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38043024227234756 [2023-01-28 02:47:50,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3643 transitions. [2023-01-28 02:47:50,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3643 transitions. [2023-01-28 02:47:50,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:50,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3643 transitions. [2023-01-28 02:47:50,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.77777777777777) internal successors, (3643), 9 states have internal predecessors, (3643), 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 02:47:50,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:47:50,066 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:47:50,066 INFO L175 Difference]: Start difference. First operand has 201 places, 844 transitions, 11876 flow. Second operand 9 states and 3643 transitions. [2023-01-28 02:47:50,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1164 transitions, 17871 flow [2023-01-28 02:47:58,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1164 transitions, 17622 flow, removed 100 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:58,354 INFO L231 Difference]: Finished difference. Result has 212 places, 872 transitions, 12483 flow [2023-01-28 02:47:58,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=11722, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12483, PETRI_PLACES=212, PETRI_TRANSITIONS=872} [2023-01-28 02:47:58,355 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2023-01-28 02:47:58,355 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 872 transitions, 12483 flow [2023-01-28 02:47:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:47:58,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:58,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:58,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 02:47:58,356 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 02:47:58,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1669446438, now seen corresponding path program 10 times [2023-01-28 02:47:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517094888] [2023-01-28 02:47:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517094888] [2023-01-28 02:47:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517094888] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:59,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:47:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238023450] [2023-01-28 02:47:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:59,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:47:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:47:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:47:59,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-28 02:47:59,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 872 transitions, 12483 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 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 02:47:59,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:59,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-28 02:47:59,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:09,338 INFO L130 PetriNetUnfolder]: 20493/38039 cut-off events. [2023-01-28 02:48:09,339 INFO L131 PetriNetUnfolder]: For 386924/386924 co-relation queries the response was YES. [2023-01-28 02:48:09,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221603 conditions, 38039 events. 20493/38039 cut-off events. For 386924/386924 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 371577 event pairs, 6893 based on Foata normal form. 2/38040 useless extension candidates. Maximal degree in co-relation 221520. Up to 16626 conditions per place. [2023-01-28 02:48:09,851 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1118 selfloop transitions, 72 changer transitions 8/1198 dead transitions. [2023-01-28 02:48:09,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1198 transitions, 18917 flow [2023-01-28 02:48:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:48:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:48:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3802 transitions. [2023-01-28 02:48:09,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35733082706766917 [2023-01-28 02:48:09,856 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3802 transitions. [2023-01-28 02:48:09,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3802 transitions. [2023-01-28 02:48:09,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:09,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3802 transitions. [2023-01-28 02:48:09,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.2) internal successors, (3802), 10 states have internal predecessors, (3802), 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 02:48:10,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 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 02:48:10,003 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 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 02:48:10,003 INFO L175 Difference]: Start difference. First operand has 212 places, 872 transitions, 12483 flow. Second operand 10 states and 3802 transitions. [2023-01-28 02:48:10,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1198 transitions, 18917 flow [2023-01-28 02:48:17,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1198 transitions, 18619 flow, removed 81 selfloop flow, removed 2 redundant places. [2023-01-28 02:48:17,368 INFO L231 Difference]: Finished difference. Result has 224 places, 888 transitions, 12904 flow [2023-01-28 02:48:17,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12345, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12904, PETRI_PLACES=224, PETRI_TRANSITIONS=888} [2023-01-28 02:48:17,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-01-28 02:48:17,368 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 888 transitions, 12904 flow [2023-01-28 02:48:17,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 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 02:48:17,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:17,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:17,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 02:48:17,369 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 02:48:17,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1563823200, now seen corresponding path program 11 times [2023-01-28 02:48:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:17,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320755047] [2023-01-28 02:48:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:17,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320755047] [2023-01-28 02:48:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320755047] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:18,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:18,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:48:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835775593] [2023-01-28 02:48:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:48:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:48:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:48:18,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:48:18,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 888 transitions, 12904 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:48:18,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:18,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:48:18,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:32,095 INFO L130 PetriNetUnfolder]: 26490/49576 cut-off events. [2023-01-28 02:48:32,095 INFO L131 PetriNetUnfolder]: For 525377/525377 co-relation queries the response was YES. [2023-01-28 02:48:32,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290463 conditions, 49576 events. 26490/49576 cut-off events. For 525377/525377 co-relation queries the response was YES. Maximal size of possible extension queue 3334. Compared 507995 event pairs, 10421 based on Foata normal form. 1/49576 useless extension candidates. Maximal degree in co-relation 290375. Up to 28414 conditions per place. [2023-01-28 02:48:32,978 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1360 selfloop transitions, 113 changer transitions 7/1480 dead transitions. [2023-01-28 02:48:32,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1480 transitions, 23963 flow [2023-01-28 02:48:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:48:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:48:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3635 transitions. [2023-01-28 02:48:32,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795948203842941 [2023-01-28 02:48:32,983 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3635 transitions. [2023-01-28 02:48:32,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3635 transitions. [2023-01-28 02:48:32,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:32,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3635 transitions. [2023-01-28 02:48:32,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.8888888888889) internal successors, (3635), 9 states have internal predecessors, (3635), 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 02:48:32,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:48:32,994 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:48:32,995 INFO L175 Difference]: Start difference. First operand has 224 places, 888 transitions, 12904 flow. Second operand 9 states and 3635 transitions. [2023-01-28 02:48:32,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1480 transitions, 23963 flow [2023-01-28 02:48:47,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1480 transitions, 23854 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-28 02:48:47,381 INFO L231 Difference]: Finished difference. Result has 234 places, 942 transitions, 14256 flow [2023-01-28 02:48:47,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12831, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14256, PETRI_PLACES=234, PETRI_TRANSITIONS=942} [2023-01-28 02:48:47,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2023-01-28 02:48:47,382 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 942 transitions, 14256 flow [2023-01-28 02:48:47,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:48:47,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:47,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 02:48:47,383 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 02:48:47,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash -984770268, now seen corresponding path program 12 times [2023-01-28 02:48:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887514860] [2023-01-28 02:48:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:47,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:47,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:47,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887514860] [2023-01-28 02:48:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887514860] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:47,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:47,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:48:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059671435] [2023-01-28 02:48:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:47,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:48:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:48:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:48:47,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:48:47,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 942 transitions, 14256 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:48:47,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:47,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:48:47,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:03,070 INFO L130 PetriNetUnfolder]: 26489/49567 cut-off events. [2023-01-28 02:49:03,070 INFO L131 PetriNetUnfolder]: For 564938/564938 co-relation queries the response was YES. [2023-01-28 02:49:03,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294874 conditions, 49567 events. 26489/49567 cut-off events. For 564938/564938 co-relation queries the response was YES. Maximal size of possible extension queue 3304. Compared 507034 event pairs, 10655 based on Foata normal form. 1/49567 useless extension candidates. Maximal degree in co-relation 294780. Up to 28414 conditions per place. [2023-01-28 02:49:03,894 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1256 selfloop transitions, 176 changer transitions 8/1440 dead transitions. [2023-01-28 02:49:03,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1440 transitions, 23971 flow [2023-01-28 02:49:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:49:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:49:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-28 02:49:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-28 02:49:03,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-28 02:49:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-28 02:49:03,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:03,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-28 02:49:03,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 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 02:49:03,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:49:03,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:49:03,907 INFO L175 Difference]: Start difference. First operand has 234 places, 942 transitions, 14256 flow. Second operand 9 states and 3624 transitions. [2023-01-28 02:49:03,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1440 transitions, 23971 flow [2023-01-28 02:49:18,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1440 transitions, 23859 flow, removed 56 selfloop flow, removed 1 redundant places. [2023-01-28 02:49:18,378 INFO L231 Difference]: Finished difference. Result has 246 places, 1010 transitions, 15941 flow [2023-01-28 02:49:18,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14196, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15941, PETRI_PLACES=246, PETRI_TRANSITIONS=1010} [2023-01-28 02:49:18,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2023-01-28 02:49:18,379 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1010 transitions, 15941 flow [2023-01-28 02:49:18,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:49:18,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:18,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:18,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 02:49:18,380 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 02:49:18,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1999783334, now seen corresponding path program 13 times [2023-01-28 02:49:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:18,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699185402] [2023-01-28 02:49:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:18,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:18,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699185402] [2023-01-28 02:49:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699185402] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:49:18,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765688298] [2023-01-28 02:49:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:49:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:18,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:49:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:49:18,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:49:19,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1010 transitions, 15941 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:49:19,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:19,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:49:19,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:35,787 INFO L130 PetriNetUnfolder]: 27658/51752 cut-off events. [2023-01-28 02:49:35,787 INFO L131 PetriNetUnfolder]: For 605019/605019 co-relation queries the response was YES. [2023-01-28 02:49:36,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310774 conditions, 51752 events. 27658/51752 cut-off events. For 605019/605019 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 533021 event pairs, 10518 based on Foata normal form. 1/51752 useless extension candidates. Maximal degree in co-relation 310674. Up to 28475 conditions per place. [2023-01-28 02:49:36,887 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1380 selfloop transitions, 179 changer transitions 7/1566 dead transitions. [2023-01-28 02:49:36,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 1566 transitions, 26504 flow [2023-01-28 02:49:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:49:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:49:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3640 transitions. [2023-01-28 02:49:36,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38011695906432746 [2023-01-28 02:49:36,890 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3640 transitions. [2023-01-28 02:49:36,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3640 transitions. [2023-01-28 02:49:36,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:36,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3640 transitions. [2023-01-28 02:49:36,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.44444444444446) internal successors, (3640), 9 states have internal predecessors, (3640), 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 02:49:36,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:49:36,899 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:49:36,899 INFO L175 Difference]: Start difference. First operand has 246 places, 1010 transitions, 15941 flow. Second operand 9 states and 3640 transitions. [2023-01-28 02:49:36,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 1566 transitions, 26504 flow [2023-01-28 02:49:54,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1566 transitions, 26229 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-01-28 02:49:54,173 INFO L231 Difference]: Finished difference. Result has 256 places, 1038 transitions, 16780 flow [2023-01-28 02:49:54,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=15709, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16780, PETRI_PLACES=256, PETRI_TRANSITIONS=1038} [2023-01-28 02:49:54,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2023-01-28 02:49:54,174 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 1038 transitions, 16780 flow [2023-01-28 02:49:54,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:49:54,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:54,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:54,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 02:49:54,175 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 02:49:54,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 14 times [2023-01-28 02:49:54,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:54,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800849841] [2023-01-28 02:49:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:54,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:54,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800849841] [2023-01-28 02:49:54,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800849841] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:54,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:54,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:49:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748457843] [2023-01-28 02:49:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:49:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:49:54,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:49:54,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:49:54,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1038 transitions, 16780 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:49:54,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:54,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:49:54,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:11,535 INFO L130 PetriNetUnfolder]: 27657/51743 cut-off events. [2023-01-28 02:50:11,535 INFO L131 PetriNetUnfolder]: For 624318/624318 co-relation queries the response was YES. [2023-01-28 02:50:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312034 conditions, 51743 events. 27657/51743 cut-off events. For 624318/624318 co-relation queries the response was YES. Maximal size of possible extension queue 3489. Compared 532246 event pairs, 11057 based on Foata normal form. 1/51743 useless extension candidates. Maximal degree in co-relation 311930. Up to 28475 conditions per place. [2023-01-28 02:50:12,708 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1267 selfloop transitions, 197 changer transitions 7/1471 dead transitions. [2023-01-28 02:50:12,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1471 transitions, 25457 flow [2023-01-28 02:50:12,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:50:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:50:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3627 transitions. [2023-01-28 02:50:12,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37875939849624063 [2023-01-28 02:50:12,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3627 transitions. [2023-01-28 02:50:12,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3627 transitions. [2023-01-28 02:50:12,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:12,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3627 transitions. [2023-01-28 02:50:12,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 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 02:50:12,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:50:12,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:50:12,717 INFO L175 Difference]: Start difference. First operand has 256 places, 1038 transitions, 16780 flow. Second operand 9 states and 3627 transitions. [2023-01-28 02:50:12,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1471 transitions, 25457 flow [2023-01-28 02:50:29,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1471 transitions, 25137 flow, removed 47 selfloop flow, removed 3 redundant places. [2023-01-28 02:50:29,297 INFO L231 Difference]: Finished difference. Result has 262 places, 1039 transitions, 16931 flow [2023-01-28 02:50:29,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16490, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16931, PETRI_PLACES=262, PETRI_TRANSITIONS=1039} [2023-01-28 02:50:29,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2023-01-28 02:50:29,298 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 1039 transitions, 16931 flow [2023-01-28 02:50:29,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:50:29,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:29,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:29,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 02:50:29,299 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 02:50:29,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1617919318, now seen corresponding path program 15 times [2023-01-28 02:50:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696733780] [2023-01-28 02:50:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:29,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:29,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696733780] [2023-01-28 02:50:29,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696733780] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:29,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:29,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:50:29,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19817761] [2023-01-28 02:50:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:29,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:50:29,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:50:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:50:29,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:50:29,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1039 transitions, 16931 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:50:29,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:29,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:50:29,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:47,177 INFO L130 PetriNetUnfolder]: 27653/51739 cut-off events. [2023-01-28 02:50:47,178 INFO L131 PetriNetUnfolder]: For 631949/631949 co-relation queries the response was YES. [2023-01-28 02:50:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312748 conditions, 51739 events. 27653/51739 cut-off events. For 631949/631949 co-relation queries the response was YES. Maximal size of possible extension queue 3468. Compared 532242 event pairs, 11139 based on Foata normal form. 1/51739 useless extension candidates. Maximal degree in co-relation 312643. Up to 28475 conditions per place. [2023-01-28 02:50:48,444 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1386 selfloop transitions, 200 changer transitions 7/1593 dead transitions. [2023-01-28 02:50:48,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1593 transitions, 27300 flow [2023-01-28 02:50:48,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:50:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:50:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3651 transitions. [2023-01-28 02:50:48,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38126566416040103 [2023-01-28 02:50:48,447 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3651 transitions. [2023-01-28 02:50:48,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3651 transitions. [2023-01-28 02:50:48,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:48,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3651 transitions. [2023-01-28 02:50:48,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 405.6666666666667) internal successors, (3651), 9 states have internal predecessors, (3651), 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 02:50:48,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:50:48,453 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:50:48,453 INFO L175 Difference]: Start difference. First operand has 262 places, 1039 transitions, 16931 flow. Second operand 9 states and 3651 transitions. [2023-01-28 02:50:48,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1593 transitions, 27300 flow [2023-01-28 02:51:04,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1593 transitions, 27051 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-28 02:51:04,250 INFO L231 Difference]: Finished difference. Result has 272 places, 1073 transitions, 18068 flow [2023-01-28 02:51:04,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16727, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18068, PETRI_PLACES=272, PETRI_TRANSITIONS=1073} [2023-01-28 02:51:04,251 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2023-01-28 02:51:04,251 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 1073 transitions, 18068 flow [2023-01-28 02:51:04,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:51:04,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:04,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 02:51:04,252 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 02:51:04,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 841868078, now seen corresponding path program 16 times [2023-01-28 02:51:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290946553] [2023-01-28 02:51:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:04,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:04,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290946553] [2023-01-28 02:51:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290946553] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:51:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801919902] [2023-01-28 02:51:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:51:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:51:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:51:04,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:51:04,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1073 transitions, 18068 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:51:04,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:04,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:51:04,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:51:22,071 INFO L130 PetriNetUnfolder]: 27875/52445 cut-off events. [2023-01-28 02:51:22,072 INFO L131 PetriNetUnfolder]: For 671717/671717 co-relation queries the response was YES. [2023-01-28 02:51:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318576 conditions, 52445 events. 27875/52445 cut-off events. For 671717/671717 co-relation queries the response was YES. Maximal size of possible extension queue 3518. Compared 543510 event pairs, 10474 based on Foata normal form. 1/52445 useless extension candidates. Maximal degree in co-relation 318466. Up to 28475 conditions per place. [2023-01-28 02:51:23,116 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1335 selfloop transitions, 268 changer transitions 7/1610 dead transitions. [2023-01-28 02:51:23,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1610 transitions, 28418 flow [2023-01-28 02:51:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:51:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:51:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3623 transitions. [2023-01-28 02:51:23,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37834168755221387 [2023-01-28 02:51:23,120 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3623 transitions. [2023-01-28 02:51:23,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3623 transitions. [2023-01-28 02:51:23,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:51:23,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3623 transitions. [2023-01-28 02:51:23,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.55555555555554) internal successors, (3623), 9 states have internal predecessors, (3623), 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 02:51:23,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:51:23,127 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:51:23,127 INFO L175 Difference]: Start difference. First operand has 272 places, 1073 transitions, 18068 flow. Second operand 9 states and 3623 transitions. [2023-01-28 02:51:23,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1610 transitions, 28418 flow [2023-01-28 02:51:41,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1610 transitions, 28065 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-01-28 02:51:41,490 INFO L231 Difference]: Finished difference. Result has 282 places, 1130 transitions, 19945 flow [2023-01-28 02:51:41,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17752, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19945, PETRI_PLACES=282, PETRI_TRANSITIONS=1130} [2023-01-28 02:51:41,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2023-01-28 02:51:41,491 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 1130 transitions, 19945 flow [2023-01-28 02:51:41,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:51:41,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:41,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 02:51:41,492 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 02:51:41,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1896731414, now seen corresponding path program 17 times [2023-01-28 02:51:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243493652] [2023-01-28 02:51:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:42,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:42,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243493652] [2023-01-28 02:51:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243493652] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:42,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:42,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:51:42,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679464326] [2023-01-28 02:51:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:42,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:51:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:42,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:51:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:51:42,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 1064 [2023-01-28 02:51:42,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1130 transitions, 19945 flow. Second operand has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 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 02:51:42,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:42,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 1064 [2023-01-28 02:51:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:00,758 INFO L130 PetriNetUnfolder]: 28076/52886 cut-off events. [2023-01-28 02:52:00,758 INFO L131 PetriNetUnfolder]: For 727779/727779 co-relation queries the response was YES. [2023-01-28 02:52:01,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325856 conditions, 52886 events. 28076/52886 cut-off events. For 727779/727779 co-relation queries the response was YES. Maximal size of possible extension queue 3569. Compared 549961 event pairs, 10597 based on Foata normal form. 1/52886 useless extension candidates. Maximal degree in co-relation 325741. Up to 28484 conditions per place. [2023-01-28 02:52:01,994 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 1279 selfloop transitions, 284 changer transitions 8/1571 dead transitions. [2023-01-28 02:52:01,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1571 transitions, 28576 flow [2023-01-28 02:52:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:52:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:52:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4233 transitions. [2023-01-28 02:52:01,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36167122351332875 [2023-01-28 02:52:01,998 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4233 transitions. [2023-01-28 02:52:01,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4233 transitions. [2023-01-28 02:52:01,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:01,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4233 transitions. [2023-01-28 02:52:02,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 384.8181818181818) internal successors, (4233), 11 states have internal predecessors, (4233), 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 02:52:02,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 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 02:52:02,006 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 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 02:52:02,006 INFO L175 Difference]: Start difference. First operand has 282 places, 1130 transitions, 19945 flow. Second operand 11 states and 4233 transitions. [2023-01-28 02:52:02,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1571 transitions, 28576 flow [2023-01-28 02:52:20,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1571 transitions, 28286 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-01-28 02:52:20,826 INFO L231 Difference]: Finished difference. Result has 295 places, 1208 transitions, 21795 flow [2023-01-28 02:52:20,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19685, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21795, PETRI_PLACES=295, PETRI_TRANSITIONS=1208} [2023-01-28 02:52:20,827 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-01-28 02:52:20,827 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1208 transitions, 21795 flow [2023-01-28 02:52:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 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 02:52:20,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:52:20,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:52:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 02:52:20,828 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 02:52:20,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:52:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 2 times [2023-01-28 02:52:20,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:52:20,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559189917] [2023-01-28 02:52:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:52:20,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:52:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:52:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:52:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:52:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559189917] [2023-01-28 02:52:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559189917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:52:20,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:52:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:52:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102777814] [2023-01-28 02:52:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:52:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:52:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:52:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:52:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:52:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1064 [2023-01-28 02:52:20,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1208 transitions, 21795 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 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 02:52:20,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:52:20,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1064 [2023-01-28 02:52:20,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:39,749 INFO L130 PetriNetUnfolder]: 29540/54072 cut-off events. [2023-01-28 02:52:39,749 INFO L131 PetriNetUnfolder]: For 791159/791159 co-relation queries the response was YES. [2023-01-28 02:52:40,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340719 conditions, 54072 events. 29540/54072 cut-off events. For 791159/791159 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 544532 event pairs, 9515 based on Foata normal form. 622/54693 useless extension candidates. Maximal degree in co-relation 340598. Up to 29781 conditions per place. [2023-01-28 02:52:41,252 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 1526 selfloop transitions, 146 changer transitions 0/1672 dead transitions. [2023-01-28 02:52:41,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1672 transitions, 32781 flow [2023-01-28 02:52:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:52:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:52:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1343 transitions. [2023-01-28 02:52:41,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207393483709273 [2023-01-28 02:52:41,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1343 transitions. [2023-01-28 02:52:41,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1343 transitions. [2023-01-28 02:52:41,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:41,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1343 transitions. [2023-01-28 02:52:41,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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 02:52:41,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:52:41,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 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 02:52:41,257 INFO L175 Difference]: Start difference. First operand has 295 places, 1208 transitions, 21795 flow. Second operand 3 states and 1343 transitions. [2023-01-28 02:52:41,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1672 transitions, 32781 flow [2023-01-28 02:53:00,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1672 transitions, 32373 flow, removed 74 selfloop flow, removed 3 redundant places. [2023-01-28 02:53:00,204 INFO L231 Difference]: Finished difference. Result has 295 places, 1220 transitions, 22459 flow [2023-01-28 02:53:00,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20509, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1015, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22459, PETRI_PLACES=295, PETRI_TRANSITIONS=1220} [2023-01-28 02:53:00,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-01-28 02:53:00,205 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1220 transitions, 22459 flow [2023-01-28 02:53:00,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 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 02:53:00,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:00,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:53:00,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 02:53:00,206 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 02:53:00,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -342469808, now seen corresponding path program 18 times [2023-01-28 02:53:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445125906] [2023-01-28 02:53:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:00,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:00,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:00,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445125906] [2023-01-28 02:53:00,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445125906] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:00,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:00,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:53:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384939281] [2023-01-28 02:53:00,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:00,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:53:00,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:00,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:53:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:53:00,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:53:00,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1220 transitions, 22459 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:53:00,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:00,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:53:00,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:20,366 INFO L130 PetriNetUnfolder]: 29540/54071 cut-off events. [2023-01-28 02:53:20,366 INFO L131 PetriNetUnfolder]: For 793426/793426 co-relation queries the response was YES. [2023-01-28 02:53:21,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345839 conditions, 54071 events. 29540/54071 cut-off events. For 793426/793426 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 544433 event pairs, 10963 based on Foata normal form. 1/54071 useless extension candidates. Maximal degree in co-relation 345718. Up to 30908 conditions per place. [2023-01-28 02:53:21,824 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1294 selfloop transitions, 273 changer transitions 7/1574 dead transitions. [2023-01-28 02:53:21,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1574 transitions, 30174 flow [2023-01-28 02:53:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:53:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:53:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3620 transitions. [2023-01-28 02:53:21,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780284043441938 [2023-01-28 02:53:21,827 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3620 transitions. [2023-01-28 02:53:21,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3620 transitions. [2023-01-28 02:53:21,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:21,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3620 transitions. [2023-01-28 02:53:21,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.22222222222223) internal successors, (3620), 9 states have internal predecessors, (3620), 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 02:53:21,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:53:21,833 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:53:21,833 INFO L175 Difference]: Start difference. First operand has 295 places, 1220 transitions, 22459 flow. Second operand 9 states and 3620 transitions. [2023-01-28 02:53:21,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1574 transitions, 30174 flow [2023-01-28 02:53:41,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1574 transitions, 29829 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 02:53:42,014 INFO L231 Difference]: Finished difference. Result has 304 places, 1235 transitions, 23219 flow [2023-01-28 02:53:42,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22125, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23219, PETRI_PLACES=304, PETRI_TRANSITIONS=1235} [2023-01-28 02:53:42,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2023-01-28 02:53:42,016 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1235 transitions, 23219 flow [2023-01-28 02:53:42,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:53:42,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:42,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:53:42,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 02:53:42,017 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 02:53:42,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 144662842, now seen corresponding path program 19 times [2023-01-28 02:53:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:42,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648452024] [2023-01-28 02:53:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:42,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648452024] [2023-01-28 02:53:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648452024] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:42,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:53:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216194456] [2023-01-28 02:53:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:42,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:53:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:53:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:53:42,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:53:42,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1235 transitions, 23219 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:53:42,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:42,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:53:42,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:54:02,454 INFO L130 PetriNetUnfolder]: 29535/54169 cut-off events. [2023-01-28 02:54:02,454 INFO L131 PetriNetUnfolder]: For 805426/805426 co-relation queries the response was YES. [2023-01-28 02:54:03,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346476 conditions, 54169 events. 29535/54169 cut-off events. For 805426/805426 co-relation queries the response was YES. Maximal size of possible extension queue 3493. Compared 547397 event pairs, 11078 based on Foata normal form. 2/54170 useless extension candidates. Maximal degree in co-relation 346351. Up to 30910 conditions per place. [2023-01-28 02:54:04,005 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1296 selfloop transitions, 259 changer transitions 9/1564 dead transitions. [2023-01-28 02:54:04,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1564 transitions, 30492 flow [2023-01-28 02:54:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:54:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:54:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3629 transitions. [2023-01-28 02:54:04,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2023-01-28 02:54:04,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3629 transitions. [2023-01-28 02:54:04,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3629 transitions. [2023-01-28 02:54:04,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:54:04,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3629 transitions. [2023-01-28 02:54:04,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.22222222222223) internal successors, (3629), 9 states have internal predecessors, (3629), 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 02:54:04,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:54:04,014 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 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 02:54:04,014 INFO L175 Difference]: Start difference. First operand has 304 places, 1235 transitions, 23219 flow. Second operand 9 states and 3629 transitions. [2023-01-28 02:54:04,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1564 transitions, 30492 flow [2023-01-28 02:54:24,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1564 transitions, 30038 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 02:54:24,527 INFO L231 Difference]: Finished difference. Result has 311 places, 1251 transitions, 23931 flow [2023-01-28 02:54:24,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22789, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=978, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23931, PETRI_PLACES=311, PETRI_TRANSITIONS=1251} [2023-01-28 02:54:24,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-28 02:54:24,529 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 1251 transitions, 23931 flow [2023-01-28 02:54:24,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:54:24,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:54:24,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:54:24,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 02:54:24,530 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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 02:54:24,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:54:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -841565252, now seen corresponding path program 20 times [2023-01-28 02:54:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:54:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76726777] [2023-01-28 02:54:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:54:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:54:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:54:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:54:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:54:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76726777] [2023-01-28 02:54:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76726777] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:54:24,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:54:24,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:54:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088701767] [2023-01-28 02:54:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:54:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:54:24,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:54:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:54:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:54:24,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:54:24,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1251 transitions, 23931 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 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 02:54:24,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:54:24,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:54:24,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand