/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:26:19,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:26:19,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:26:19,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:26:19,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:26:19,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:26:19,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:26:19,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:26:19,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:26:19,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:26:19,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:26:19,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:26:19,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:26:19,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:26:19,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:26:19,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:26:19,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:26:19,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:26:19,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:26:19,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:26:19,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:26:19,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:26:19,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:26:19,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:26:19,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:26:19,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:26:19,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:26:19,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:26:19,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:26:19,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:26:19,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:26:19,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:26:19,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:26:19,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:26:19,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:26:19,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:26:19,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:26:19,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:26:19,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:26:19,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:26:19,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:26:19,730 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-NoLbe.epf [2022-12-11 19:26:19,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:26:19,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:26:19,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:26:19,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:26:19,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:26:19,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:26:19,765 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:26:19,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:26:19,766 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:26:19,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:26:19,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:26:19,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:26:19,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:26:19,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:26:19,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:26:19,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:26:19,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:26:19,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:26:19,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:26:19,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:26:19,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:26:19,769 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:26:19,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:26:19,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:26:19,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:26:19,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:26:20,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:26:20,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:26:20,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:26:20,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:26:20,107 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:26:20,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2022-12-11 19:26:21,304 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:26:21,537 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:26:21,537 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2022-12-11 19:26:21,545 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7338a1538/16e8495224ef4b07a03dce85f47b5d52/FLAGfe482fc87 [2022-12-11 19:26:21,556 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7338a1538/16e8495224ef4b07a03dce85f47b5d52 [2022-12-11 19:26:21,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:26:21,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:26:21,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:26:21,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:26:21,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:26:21,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e87a251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21, skipping insertion in model container [2022-12-11 19:26:21,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:26:21,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:26:21,786 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-12-11 19:26:21,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:26:21,808 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:26:21,842 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-12-11 19:26:21,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:26:21,859 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:26:21,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21 WrapperNode [2022-12-11 19:26:21,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:26:21,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:26:21,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:26:21,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:26:21,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,936 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-12-11 19:26:21,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:26:21,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:26:21,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:26:21,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:26:21,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:21,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:22,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:22,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:22,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:22,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:26:22,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:26:22,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:26:22,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:26:22,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (1/1) ... [2022-12-11 19:26:22,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:26:22,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:26:22,061 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) [2022-12-11 19:26:22,084 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 [2022-12-11 19:26:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:26:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:26:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:26:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:26:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:26:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:26:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:26:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:26:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:26:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:26:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:26:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:26:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:26:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:26:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:26:22,110 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:26:22,267 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:26:22,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:26:23,050 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:26:23,065 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:26:23,065 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-11 19:26:23,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:26:23 BoogieIcfgContainer [2022-12-11 19:26:23,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:26:23,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:26:23,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:26:23,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:26:23,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:26:21" (1/3) ... [2022-12-11 19:26:23,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dd933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:26:23, skipping insertion in model container [2022-12-11 19:26:23,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:26:21" (2/3) ... [2022-12-11 19:26:23,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dd933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:26:23, skipping insertion in model container [2022-12-11 19:26:23,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:26:23" (3/3) ... [2022-12-11 19:26:23,075 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-12-11 19:26:23,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:26:23,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:26:23,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:26:23,297 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 19:26:23,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 690 transitions, 1404 flow [2022-12-11 19:26:23,657 INFO L130 PetriNetUnfolder]: 73/687 cut-off events. [2022-12-11 19:26:23,657 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:26:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 687 events. 73/687 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2360 event pairs, 0 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 507. Up to 2 conditions per place. [2022-12-11 19:26:23,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 627 places, 690 transitions, 1404 flow [2022-12-11 19:26:23,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 614 places, 677 transitions, 1372 flow [2022-12-11 19:26:23,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:26:23,720 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;@50970b36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:26:23,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:26:23,939 INFO L130 PetriNetUnfolder]: 73/676 cut-off events. [2022-12-11 19:26:23,939 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:26:23,939 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:23,940 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:23,941 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)] === [2022-12-11 19:26:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:23,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1807096790, now seen corresponding path program 1 times [2022-12-11 19:26:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:23,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414917510] [2022-12-11 19:26:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:23,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414917510] [2022-12-11 19:26:24,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414917510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:24,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:24,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745748608] [2022-12-11 19:26:24,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:24,472 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:24,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 677 transitions, 1372 flow. Second operand has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:24,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:24,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:24,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:25,266 INFO L130 PetriNetUnfolder]: 274/2775 cut-off events. [2022-12-11 19:26:25,266 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2022-12-11 19:26:25,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3174 conditions, 2775 events. 274/2775 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25142 event pairs, 96 based on Foata normal form. 490/2945 useless extension candidates. Maximal degree in co-relation 2831. Up to 185 conditions per place. [2022-12-11 19:26:25,328 INFO L137 encePairwiseOnDemand]: 649/690 looper letters, 33 selfloop transitions, 2 changer transitions 7/655 dead transitions. [2022-12-11 19:26:25,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 655 transitions, 1413 flow [2022-12-11 19:26:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1998 transitions. [2022-12-11 19:26:25,348 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9652173913043478 [2022-12-11 19:26:25,350 INFO L175 Difference]: Start difference. First operand has 614 places, 677 transitions, 1372 flow. Second operand 3 states and 1998 transitions. [2022-12-11 19:26:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 655 transitions, 1413 flow [2022-12-11 19:26:25,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 655 transitions, 1391 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:26:25,375 INFO L231 Difference]: Finished difference. Result has 612 places, 635 transitions, 1292 flow [2022-12-11 19:26:25,378 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1292, PETRI_PLACES=612, PETRI_TRANSITIONS=635} [2022-12-11 19:26:25,384 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -2 predicate places. [2022-12-11 19:26:25,385 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 635 transitions, 1292 flow [2022-12-11 19:26:25,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:25,386 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:25,387 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:25,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:26:25,387 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)] === [2022-12-11 19:26:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash 232822056, now seen corresponding path program 2 times [2022-12-11 19:26:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:25,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327289719] [2022-12-11 19:26:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:25,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327289719] [2022-12-11 19:26:25,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327289719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:25,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:25,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:25,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878083150] [2022-12-11 19:26:25,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:25,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:25,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:25,614 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:25,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 635 transitions, 1292 flow. Second operand has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:25,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:25,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:25,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:26,353 INFO L130 PetriNetUnfolder]: 288/3044 cut-off events. [2022-12-11 19:26:26,353 INFO L131 PetriNetUnfolder]: For 112/121 co-relation queries the response was YES. [2022-12-11 19:26:26,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 3044 events. 288/3044 cut-off events. For 112/121 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27779 event pairs, 98 based on Foata normal form. 6/2755 useless extension candidates. Maximal degree in co-relation 2819. Up to 201 conditions per place. [2022-12-11 19:26:26,422 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 33 selfloop transitions, 4 changer transitions 0/650 dead transitions. [2022-12-11 19:26:26,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 650 transitions, 1405 flow [2022-12-11 19:26:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-12-11 19:26:26,435 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9338164251207729 [2022-12-11 19:26:26,435 INFO L175 Difference]: Start difference. First operand has 612 places, 635 transitions, 1292 flow. Second operand 3 states and 1933 transitions. [2022-12-11 19:26:26,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 650 transitions, 1405 flow [2022-12-11 19:26:26,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 650 transitions, 1403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:26,449 INFO L231 Difference]: Finished difference. Result has 608 places, 637 transitions, 1322 flow [2022-12-11 19:26:26,450 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1322, PETRI_PLACES=608, PETRI_TRANSITIONS=637} [2022-12-11 19:26:26,451 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -6 predicate places. [2022-12-11 19:26:26,452 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 637 transitions, 1322 flow [2022-12-11 19:26:26,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:26,454 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:26,454 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:26,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:26:26,455 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)] === [2022-12-11 19:26:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1852187533, now seen corresponding path program 1 times [2022-12-11 19:26:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:26,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79977585] [2022-12-11 19:26:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:26,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:26,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79977585] [2022-12-11 19:26:26,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79977585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:26,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:26,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:26,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731594270] [2022-12-11 19:26:26,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:26,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:26,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:26,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:26,638 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:26,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 637 transitions, 1322 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:26,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:26,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:26,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:27,246 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2152] thread2EXIT-->L160-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork2_thidvar0_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} AuxVars[] AssignedVars[][517], [637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), Black: 632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 521#L123-4true, 539#L160-2true, Black: 635#true]) [2022-12-11 19:26:27,247 INFO L382 tUnfolder$Statistics]: this new event has 211 ancestors and is cut-off event [2022-12-11 19:26:27,247 INFO L385 tUnfolder$Statistics]: existing Event has 211 ancestors and is cut-off event [2022-12-11 19:26:27,247 INFO L385 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event [2022-12-11 19:26:27,247 INFO L385 tUnfolder$Statistics]: existing Event has 216 ancestors and is cut-off event [2022-12-11 19:26:27,248 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2152] thread2EXIT-->L160-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork2_thidvar0_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} AuxVars[] AssignedVars[][502], [632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 640#true, Black: 630#true, 539#L160-2true, 259#L123-6true, Black: 637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 635#true]) [2022-12-11 19:26:27,248 INFO L382 tUnfolder$Statistics]: this new event has 211 ancestors and is cut-off event [2022-12-11 19:26:27,248 INFO L385 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event [2022-12-11 19:26:27,248 INFO L385 tUnfolder$Statistics]: existing Event has 216 ancestors and is cut-off event [2022-12-11 19:26:27,248 INFO L385 tUnfolder$Statistics]: existing Event has 211 ancestors and is cut-off event [2022-12-11 19:26:27,298 INFO L130 PetriNetUnfolder]: 213/2383 cut-off events. [2022-12-11 19:26:27,299 INFO L131 PetriNetUnfolder]: For 206/283 co-relation queries the response was YES. [2022-12-11 19:26:27,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 2383 events. 213/2383 cut-off events. For 206/283 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 20084 event pairs, 62 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 2227. Up to 168 conditions per place. [2022-12-11 19:26:27,345 INFO L137 encePairwiseOnDemand]: 686/690 looper letters, 35 selfloop transitions, 3 changer transitions 0/653 dead transitions. [2022-12-11 19:26:27,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 653 transitions, 1445 flow [2022-12-11 19:26:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-12-11 19:26:27,350 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9338164251207729 [2022-12-11 19:26:27,350 INFO L175 Difference]: Start difference. First operand has 608 places, 637 transitions, 1322 flow. Second operand 3 states and 1933 transitions. [2022-12-11 19:26:27,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 653 transitions, 1445 flow [2022-12-11 19:26:27,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 653 transitions, 1429 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 19:26:27,361 INFO L231 Difference]: Finished difference. Result has 610 places, 640 transitions, 1346 flow [2022-12-11 19:26:27,362 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1346, PETRI_PLACES=610, PETRI_TRANSITIONS=640} [2022-12-11 19:26:27,363 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -4 predicate places. [2022-12-11 19:26:27,363 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 640 transitions, 1346 flow [2022-12-11 19:26:27,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:27,366 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:27,366 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:26:27,367 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)] === [2022-12-11 19:26:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 371689333, now seen corresponding path program 2 times [2022-12-11 19:26:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:27,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041148572] [2022-12-11 19:26:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:27,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041148572] [2022-12-11 19:26:27,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041148572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:27,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:27,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406739782] [2022-12-11 19:26:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:27,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:27,478 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:27,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 640 transitions, 1346 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:27,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:27,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:27,972 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2152] thread2EXIT-->L160-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork2_thidvar0_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} AuxVars[] AssignedVars[][505], [632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), Black: 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), 640#true, 647#(= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0), 539#L160-2true, Black: 630#true, 155#L123-1true, Black: 637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)]) [2022-12-11 19:26:27,972 INFO L382 tUnfolder$Statistics]: this new event has 210 ancestors and is cut-off event [2022-12-11 19:26:27,973 INFO L385 tUnfolder$Statistics]: existing Event has 217 ancestors and is cut-off event [2022-12-11 19:26:27,973 INFO L385 tUnfolder$Statistics]: existing Event has 215 ancestors and is cut-off event [2022-12-11 19:26:27,973 INFO L385 tUnfolder$Statistics]: existing Event has 210 ancestors and is cut-off event [2022-12-11 19:26:28,007 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2152] thread2EXIT-->L160-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork2_thidvar0_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4} AuxVars[] AssignedVars[][520], [Black: 640#true, 645#true, 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), Black: 632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 521#L123-4true, 539#L160-2true, Black: 635#true]) [2022-12-11 19:26:28,008 INFO L382 tUnfolder$Statistics]: this new event has 211 ancestors and is cut-off event [2022-12-11 19:26:28,008 INFO L385 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event [2022-12-11 19:26:28,008 INFO L385 tUnfolder$Statistics]: existing Event has 211 ancestors and is cut-off event [2022-12-11 19:26:28,008 INFO L385 tUnfolder$Statistics]: existing Event has 216 ancestors and is cut-off event [2022-12-11 19:26:28,061 INFO L130 PetriNetUnfolder]: 202/2294 cut-off events. [2022-12-11 19:26:28,061 INFO L131 PetriNetUnfolder]: For 319/389 co-relation queries the response was YES. [2022-12-11 19:26:28,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 2294 events. 202/2294 cut-off events. For 319/389 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19052 event pairs, 65 based on Foata normal form. 5/2105 useless extension candidates. Maximal degree in co-relation 2190. Up to 178 conditions per place. [2022-12-11 19:26:28,119 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 36 selfloop transitions, 5 changer transitions 0/656 dead transitions. [2022-12-11 19:26:28,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 656 transitions, 1478 flow [2022-12-11 19:26:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-12-11 19:26:28,127 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9338164251207729 [2022-12-11 19:26:28,127 INFO L175 Difference]: Start difference. First operand has 610 places, 640 transitions, 1346 flow. Second operand 3 states and 1933 transitions. [2022-12-11 19:26:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 656 transitions, 1478 flow [2022-12-11 19:26:28,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 656 transitions, 1475 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:28,140 INFO L231 Difference]: Finished difference. Result has 613 places, 643 transitions, 1394 flow [2022-12-11 19:26:28,141 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=613, PETRI_TRANSITIONS=643} [2022-12-11 19:26:28,141 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -1 predicate places. [2022-12-11 19:26:28,142 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 643 transitions, 1394 flow [2022-12-11 19:26:28,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:28,143 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:28,143 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:28,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:26:28,144 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)] === [2022-12-11 19:26:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash -225728961, now seen corresponding path program 1 times [2022-12-11 19:26:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:28,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720925718] [2022-12-11 19:26:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:28,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:28,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720925718] [2022-12-11 19:26:28,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720925718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:28,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:28,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587268065] [2022-12-11 19:26:28,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:28,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:28,228 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:28,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 643 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:28,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:28,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:28,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:29,471 INFO L130 PetriNetUnfolder]: 605/5976 cut-off events. [2022-12-11 19:26:29,472 INFO L131 PetriNetUnfolder]: For 621/718 co-relation queries the response was YES. [2022-12-11 19:26:29,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 5976 events. 605/5976 cut-off events. For 621/718 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 64809 event pairs, 217 based on Foata normal form. 12/5363 useless extension candidates. Maximal degree in co-relation 4820. Up to 411 conditions per place. [2022-12-11 19:26:29,537 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 32 selfloop transitions, 6 changer transitions 0/657 dead transitions. [2022-12-11 19:26:29,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 657 transitions, 1512 flow [2022-12-11 19:26:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2022-12-11 19:26:29,541 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-12-11 19:26:29,541 INFO L175 Difference]: Start difference. First operand has 613 places, 643 transitions, 1394 flow. Second operand 3 states and 1932 transitions. [2022-12-11 19:26:29,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 657 transitions, 1512 flow [2022-12-11 19:26:29,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 657 transitions, 1496 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 19:26:29,553 INFO L231 Difference]: Finished difference. Result has 615 places, 645 transitions, 1428 flow [2022-12-11 19:26:29,554 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1428, PETRI_PLACES=615, PETRI_TRANSITIONS=645} [2022-12-11 19:26:29,556 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 1 predicate places. [2022-12-11 19:26:29,556 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 645 transitions, 1428 flow [2022-12-11 19:26:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:29,558 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:29,558 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 19:26:29,558 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)] === [2022-12-11 19:26:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash 848137823, now seen corresponding path program 2 times [2022-12-11 19:26:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:29,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852712929] [2022-12-11 19:26:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:29,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852712929] [2022-12-11 19:26:29,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852712929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:29,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:29,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830408570] [2022-12-11 19:26:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:29,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:29,635 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:29,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 645 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:29,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:29,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:29,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:30,666 INFO L130 PetriNetUnfolder]: 555/5488 cut-off events. [2022-12-11 19:26:30,666 INFO L131 PetriNetUnfolder]: For 957/1058 co-relation queries the response was YES. [2022-12-11 19:26:30,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6476 conditions, 5488 events. 555/5488 cut-off events. For 957/1058 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 58393 event pairs, 219 based on Foata normal form. 12/4943 useless extension candidates. Maximal degree in co-relation 5327. Up to 425 conditions per place. [2022-12-11 19:26:30,732 INFO L137 encePairwiseOnDemand]: 686/690 looper letters, 36 selfloop transitions, 4 changer transitions 0/657 dead transitions. [2022-12-11 19:26:30,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 657 transitions, 1540 flow [2022-12-11 19:26:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2022-12-11 19:26:30,736 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-12-11 19:26:30,737 INFO L175 Difference]: Start difference. First operand has 615 places, 645 transitions, 1428 flow. Second operand 3 states and 1932 transitions. [2022-12-11 19:26:30,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 657 transitions, 1540 flow [2022-12-11 19:26:30,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 657 transitions, 1528 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:26:30,750 INFO L231 Difference]: Finished difference. Result has 617 places, 645 transitions, 1448 flow [2022-12-11 19:26:30,751 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1448, PETRI_PLACES=617, PETRI_TRANSITIONS=645} [2022-12-11 19:26:30,754 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 3 predicate places. [2022-12-11 19:26:30,754 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 645 transitions, 1448 flow [2022-12-11 19:26:30,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:30,755 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:30,756 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:30,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 19:26:30,756 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)] === [2022-12-11 19:26:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 474110185, now seen corresponding path program 1 times [2022-12-11 19:26:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:30,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436453185] [2022-12-11 19:26:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:26:30,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:30,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436453185] [2022-12-11 19:26:30,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436453185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:30,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:30,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:26:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583236703] [2022-12-11 19:26:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:30,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:26:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:26:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:26:30,929 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 690 [2022-12-11 19:26:30,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 645 transitions, 1448 flow. Second operand has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:30,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:30,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 690 [2022-12-11 19:26:30,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:31,178 INFO L130 PetriNetUnfolder]: 36/864 cut-off events. [2022-12-11 19:26:31,178 INFO L131 PetriNetUnfolder]: For 135/173 co-relation queries the response was YES. [2022-12-11 19:26:31,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 864 events. 36/864 cut-off events. For 135/173 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4309 event pairs, 0 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 888. Up to 55 conditions per place. [2022-12-11 19:26:31,198 INFO L137 encePairwiseOnDemand]: 675/690 looper letters, 39 selfloop transitions, 12 changer transitions 0/657 dead transitions. [2022-12-11 19:26:31,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 657 transitions, 1574 flow [2022-12-11 19:26:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:26:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:26:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3119 transitions. [2022-12-11 19:26:31,204 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9040579710144927 [2022-12-11 19:26:31,205 INFO L175 Difference]: Start difference. First operand has 617 places, 645 transitions, 1448 flow. Second operand 5 states and 3119 transitions. [2022-12-11 19:26:31,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 657 transitions, 1574 flow [2022-12-11 19:26:31,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 657 transitions, 1566 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:31,216 INFO L231 Difference]: Finished difference. Result has 621 places, 648 transitions, 1488 flow [2022-12-11 19:26:31,217 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1488, PETRI_PLACES=621, PETRI_TRANSITIONS=648} [2022-12-11 19:26:31,218 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 7 predicate places. [2022-12-11 19:26:31,218 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 648 transitions, 1488 flow [2022-12-11 19:26:31,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:31,221 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:31,222 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 19:26:31,222 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)] === [2022-12-11 19:26:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1633431266, now seen corresponding path program 1 times [2022-12-11 19:26:31,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:31,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807734417] [2022-12-11 19:26:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:26:31,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807734417] [2022-12-11 19:26:31,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807734417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:26:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006697831] [2022-12-11 19:26:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:31,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:26:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:26:31,474 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) [2022-12-11 19:26:31,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:26:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:31,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 19:26:31,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:26:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:26:31,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:26:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:26:31,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006697831] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:26:31,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:26:31,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-11 19:26:31,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136285145] [2022-12-11 19:26:31,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:26:31,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-11 19:26:31,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:31,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-11 19:26:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-11 19:26:31,898 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 610 out of 690 [2022-12-11 19:26:31,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 648 transitions, 1488 flow. Second operand has 15 states, 15 states have (on average 614.0666666666667) internal successors, (9211), 15 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:31,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:31,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 610 of 690 [2022-12-11 19:26:31,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:32,339 INFO L130 PetriNetUnfolder]: 36/888 cut-off events. [2022-12-11 19:26:32,339 INFO L131 PetriNetUnfolder]: For 123/160 co-relation queries the response was YES. [2022-12-11 19:26:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 888 events. 36/888 cut-off events. For 123/160 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4258 event pairs, 0 based on Foata normal form. 6/833 useless extension candidates. Maximal degree in co-relation 829. Up to 46 conditions per place. [2022-12-11 19:26:32,360 INFO L137 encePairwiseOnDemand]: 666/690 looper letters, 42 selfloop transitions, 33 changer transitions 0/678 dead transitions. [2022-12-11 19:26:32,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 678 transitions, 1704 flow [2022-12-11 19:26:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:26:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:26:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6791 transitions. [2022-12-11 19:26:32,373 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.894729907773386 [2022-12-11 19:26:32,373 INFO L175 Difference]: Start difference. First operand has 621 places, 648 transitions, 1488 flow. Second operand 11 states and 6791 transitions. [2022-12-11 19:26:32,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 678 transitions, 1704 flow [2022-12-11 19:26:32,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 678 transitions, 1686 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 19:26:32,388 INFO L231 Difference]: Finished difference. Result has 631 places, 666 transitions, 1637 flow [2022-12-11 19:26:32,389 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1637, PETRI_PLACES=631, PETRI_TRANSITIONS=666} [2022-12-11 19:26:32,391 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 17 predicate places. [2022-12-11 19:26:32,391 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 666 transitions, 1637 flow [2022-12-11 19:26:32,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 614.0666666666667) internal successors, (9211), 15 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:32,396 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:32,397 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:32,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 19:26:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:26:32,603 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)] === [2022-12-11 19:26:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 524880810, now seen corresponding path program 2 times [2022-12-11 19:26:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:32,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878730991] [2022-12-11 19:26:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:26:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:32,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878730991] [2022-12-11 19:26:32,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878730991] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:26:32,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204909625] [2022-12-11 19:26:32,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:26:32,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:26:32,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:26:32,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:26:32,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:26:33,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-11 19:26:33,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:26:33,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-11 19:26:33,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:26:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-11 19:26:33,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 19:26:33,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204909625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:33,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 19:26:33,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-12-11 19:26:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765692526] [2022-12-11 19:26:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:33,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-11 19:26:33,220 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 600 out of 690 [2022-12-11 19:26:33,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 666 transitions, 1637 flow. Second operand has 6 states, 6 states have (on average 606.5) internal successors, (3639), 6 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:33,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:33,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 600 of 690 [2022-12-11 19:26:33,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:33,893 INFO L130 PetriNetUnfolder]: 169/2278 cut-off events. [2022-12-11 19:26:33,893 INFO L131 PetriNetUnfolder]: For 326/405 co-relation queries the response was YES. [2022-12-11 19:26:33,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 2278 events. 169/2278 cut-off events. For 326/405 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18271 event pairs, 44 based on Foata normal form. 4/2072 useless extension candidates. Maximal degree in co-relation 2508. Up to 190 conditions per place. [2022-12-11 19:26:33,945 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 51 selfloop transitions, 3 changer transitions 4/679 dead transitions. [2022-12-11 19:26:33,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 679 transitions, 1787 flow [2022-12-11 19:26:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4259 transitions. [2022-12-11 19:26:33,954 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8817805383022774 [2022-12-11 19:26:33,954 INFO L175 Difference]: Start difference. First operand has 631 places, 666 transitions, 1637 flow. Second operand 7 states and 4259 transitions. [2022-12-11 19:26:33,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 679 transitions, 1787 flow [2022-12-11 19:26:33,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 679 transitions, 1762 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-11 19:26:33,966 INFO L231 Difference]: Finished difference. Result has 639 places, 668 transitions, 1637 flow [2022-12-11 19:26:33,967 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1637, PETRI_PLACES=639, PETRI_TRANSITIONS=668} [2022-12-11 19:26:33,967 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 25 predicate places. [2022-12-11 19:26:33,967 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 668 transitions, 1637 flow [2022-12-11 19:26:33,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 606.5) internal successors, (3639), 6 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:33,970 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:33,970 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:33,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 19:26:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-11 19:26:34,176 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)] === [2022-12-11 19:26:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -339103094, now seen corresponding path program 1 times [2022-12-11 19:26:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:34,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300277087] [2022-12-11 19:26:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:26:34,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:34,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300277087] [2022-12-11 19:26:34,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300277087] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:26:34,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736390535] [2022-12-11 19:26:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:34,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:26:34,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:26:34,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:26:34,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 19:26:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:34,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-11 19:26:34,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:26:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:26:34,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:26:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:26:34,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736390535] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:26:34,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:26:34,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-11 19:26:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383375311] [2022-12-11 19:26:34,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:26:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 19:26:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:34,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 19:26:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-12-11 19:26:34,946 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 610 out of 690 [2022-12-11 19:26:34,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 668 transitions, 1637 flow. Second operand has 22 states, 22 states have (on average 613.6818181818181) internal successors, (13501), 22 states have internal predecessors, (13501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:34,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:34,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 610 of 690 [2022-12-11 19:26:34,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:35,588 INFO L130 PetriNetUnfolder]: 36/906 cut-off events. [2022-12-11 19:26:35,588 INFO L131 PetriNetUnfolder]: For 166/203 co-relation queries the response was YES. [2022-12-11 19:26:35,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 906 events. 36/906 cut-off events. For 166/203 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4160 event pairs, 0 based on Foata normal form. 6/851 useless extension candidates. Maximal degree in co-relation 1225. Up to 46 conditions per place. [2022-12-11 19:26:35,598 INFO L137 encePairwiseOnDemand]: 666/690 looper letters, 54 selfloop transitions, 51 changer transitions 0/710 dead transitions. [2022-12-11 19:26:35,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 710 transitions, 2015 flow [2022-12-11 19:26:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-11 19:26:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-11 19:26:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10481 transitions. [2022-12-11 19:26:35,619 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8935208866155158 [2022-12-11 19:26:35,619 INFO L175 Difference]: Start difference. First operand has 639 places, 668 transitions, 1637 flow. Second operand 17 states and 10481 transitions. [2022-12-11 19:26:35,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 710 transitions, 2015 flow [2022-12-11 19:26:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 710 transitions, 2010 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-11 19:26:35,632 INFO L231 Difference]: Finished difference. Result has 653 places, 689 transitions, 1895 flow [2022-12-11 19:26:35,633 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1895, PETRI_PLACES=653, PETRI_TRANSITIONS=689} [2022-12-11 19:26:35,634 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 39 predicate places. [2022-12-11 19:26:35,634 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 689 transitions, 1895 flow [2022-12-11 19:26:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 613.6818181818181) internal successors, (13501), 22 states have internal predecessors, (13501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:35,638 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:35,639 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:35,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 19:26:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:26:35,845 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)] === [2022-12-11 19:26:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -191397022, now seen corresponding path program 2 times [2022-12-11 19:26:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:35,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857850892] [2022-12-11 19:26:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:36,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857850892] [2022-12-11 19:26:36,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857850892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:36,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:36,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293727640] [2022-12-11 19:26:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:36,113 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:36,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 689 transitions, 1895 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:36,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:36,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:37,063 INFO L130 PetriNetUnfolder]: 231/3415 cut-off events. [2022-12-11 19:26:37,063 INFO L131 PetriNetUnfolder]: For 589/708 co-relation queries the response was YES. [2022-12-11 19:26:37,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 3415 events. 231/3415 cut-off events. For 589/708 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 30380 event pairs, 44 based on Foata normal form. 2/3094 useless extension candidates. Maximal degree in co-relation 4026. Up to 132 conditions per place. [2022-12-11 19:26:37,168 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 24 selfloop transitions, 4 changer transitions 0/697 dead transitions. [2022-12-11 19:26:37,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 697 transitions, 1971 flow [2022-12-11 19:26:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1925 transitions. [2022-12-11 19:26:37,172 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9299516908212561 [2022-12-11 19:26:37,172 INFO L175 Difference]: Start difference. First operand has 653 places, 689 transitions, 1895 flow. Second operand 3 states and 1925 transitions. [2022-12-11 19:26:37,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 697 transitions, 1971 flow [2022-12-11 19:26:37,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 697 transitions, 1904 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-12-11 19:26:37,188 INFO L231 Difference]: Finished difference. Result has 648 places, 690 transitions, 1846 flow [2022-12-11 19:26:37,189 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1846, PETRI_PLACES=648, PETRI_TRANSITIONS=690} [2022-12-11 19:26:37,190 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 34 predicate places. [2022-12-11 19:26:37,190 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 690 transitions, 1846 flow [2022-12-11 19:26:37,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:37,191 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:37,191 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 19:26:37,191 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)] === [2022-12-11 19:26:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash 841438125, now seen corresponding path program 1 times [2022-12-11 19:26:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:37,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230034614] [2022-12-11 19:26:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:37,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230034614] [2022-12-11 19:26:37,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230034614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:37,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:37,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434672273] [2022-12-11 19:26:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:37,402 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:37,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 690 transitions, 1846 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:37,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:37,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:37,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:37,974 INFO L130 PetriNetUnfolder]: 313/2875 cut-off events. [2022-12-11 19:26:37,974 INFO L131 PetriNetUnfolder]: For 413/511 co-relation queries the response was YES. [2022-12-11 19:26:38,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 2875 events. 313/2875 cut-off events. For 413/511 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24200 event pairs, 143 based on Foata normal form. 0/2505 useless extension candidates. Maximal degree in co-relation 3237. Up to 353 conditions per place. [2022-12-11 19:26:38,017 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 23 selfloop transitions, 4 changer transitions 0/697 dead transitions. [2022-12-11 19:26:38,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 697 transitions, 1917 flow [2022-12-11 19:26:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1924 transitions. [2022-12-11 19:26:38,021 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9294685990338164 [2022-12-11 19:26:38,021 INFO L175 Difference]: Start difference. First operand has 648 places, 690 transitions, 1846 flow. Second operand 3 states and 1924 transitions. [2022-12-11 19:26:38,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 697 transitions, 1917 flow [2022-12-11 19:26:38,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 697 transitions, 1913 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:38,034 INFO L231 Difference]: Finished difference. Result has 650 places, 691 transitions, 1860 flow [2022-12-11 19:26:38,035 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1860, PETRI_PLACES=650, PETRI_TRANSITIONS=691} [2022-12-11 19:26:38,035 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 36 predicate places. [2022-12-11 19:26:38,035 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 691 transitions, 1860 flow [2022-12-11 19:26:38,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:38,036 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:38,036 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:38,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 19:26:38,037 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)] === [2022-12-11 19:26:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1258302362, now seen corresponding path program 1 times [2022-12-11 19:26:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:38,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990208919] [2022-12-11 19:26:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:38,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:38,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:38,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990208919] [2022-12-11 19:26:38,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990208919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:38,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:38,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:26:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874189571] [2022-12-11 19:26:38,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:26:38,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:26:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:26:38,237 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:26:38,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 691 transitions, 1860 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:38,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:38,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:26:38,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:39,878 INFO L130 PetriNetUnfolder]: 342/6541 cut-off events. [2022-12-11 19:26:39,878 INFO L131 PetriNetUnfolder]: For 706/853 co-relation queries the response was YES. [2022-12-11 19:26:40,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 6541 events. 342/6541 cut-off events. For 706/853 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 67394 event pairs, 22 based on Foata normal form. 2/5908 useless extension candidates. Maximal degree in co-relation 7213. Up to 106 conditions per place. [2022-12-11 19:26:40,025 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 25 selfloop transitions, 4 changer transitions 0/700 dead transitions. [2022-12-11 19:26:40,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 700 transitions, 1941 flow [2022-12-11 19:26:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1926 transitions. [2022-12-11 19:26:40,028 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9304347826086956 [2022-12-11 19:26:40,028 INFO L175 Difference]: Start difference. First operand has 650 places, 691 transitions, 1860 flow. Second operand 3 states and 1926 transitions. [2022-12-11 19:26:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 700 transitions, 1941 flow [2022-12-11 19:26:40,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 700 transitions, 1937 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:40,050 INFO L231 Difference]: Finished difference. Result has 652 places, 692 transitions, 1874 flow [2022-12-11 19:26:40,051 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1874, PETRI_PLACES=652, PETRI_TRANSITIONS=692} [2022-12-11 19:26:40,051 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 38 predicate places. [2022-12-11 19:26:40,051 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 692 transitions, 1874 flow [2022-12-11 19:26:40,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:40,052 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:40,052 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:40,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 19:26:40,052 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)] === [2022-12-11 19:26:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:40,053 INFO L85 PathProgramCache]: Analyzing trace with hash -480449876, now seen corresponding path program 1 times [2022-12-11 19:26:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:40,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416043242] [2022-12-11 19:26:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:40,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:40,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416043242] [2022-12-11 19:26:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416043242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:40,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242840491] [2022-12-11 19:26:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:40,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:40,336 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 600 out of 690 [2022-12-11 19:26:40,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 692 transitions, 1874 flow. Second operand has 6 states, 6 states have (on average 606.5) internal successors, (3639), 6 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:40,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:40,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 600 of 690 [2022-12-11 19:26:40,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:41,625 INFO L130 PetriNetUnfolder]: 266/5026 cut-off events. [2022-12-11 19:26:41,626 INFO L131 PetriNetUnfolder]: For 570/730 co-relation queries the response was YES. [2022-12-11 19:26:41,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6076 conditions, 5026 events. 266/5026 cut-off events. For 570/730 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 47370 event pairs, 26 based on Foata normal form. 14/4557 useless extension candidates. Maximal degree in co-relation 5630. Up to 257 conditions per place. [2022-12-11 19:26:41,732 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 52 selfloop transitions, 3 changer transitions 4/706 dead transitions. [2022-12-11 19:26:41,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 706 transitions, 2031 flow [2022-12-11 19:26:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4260 transitions. [2022-12-11 19:26:41,737 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8819875776397516 [2022-12-11 19:26:41,737 INFO L175 Difference]: Start difference. First operand has 652 places, 692 transitions, 1874 flow. Second operand 7 states and 4260 transitions. [2022-12-11 19:26:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 706 transitions, 2031 flow [2022-12-11 19:26:41,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 706 transitions, 2027 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:41,752 INFO L231 Difference]: Finished difference. Result has 662 places, 694 transitions, 1895 flow [2022-12-11 19:26:41,753 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1895, PETRI_PLACES=662, PETRI_TRANSITIONS=694} [2022-12-11 19:26:41,753 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 48 predicate places. [2022-12-11 19:26:41,754 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 694 transitions, 1895 flow [2022-12-11 19:26:41,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 606.5) internal successors, (3639), 6 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:41,754 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:41,755 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:41,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 19:26:41,755 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)] === [2022-12-11 19:26:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash -602282560, now seen corresponding path program 1 times [2022-12-11 19:26:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822597365] [2022-12-11 19:26:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:41,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:42,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822597365] [2022-12-11 19:26:42,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822597365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:42,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:42,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 19:26:42,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137034721] [2022-12-11 19:26:42,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:42,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 19:26:42,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:42,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 19:26:42,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 19:26:42,102 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 690 [2022-12-11 19:26:42,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 694 transitions, 1895 flow. Second operand has 8 states, 8 states have (on average 586.875) internal successors, (4695), 8 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:42,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:42,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 690 [2022-12-11 19:26:42,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:50,578 INFO L130 PetriNetUnfolder]: 8197/37790 cut-off events. [2022-12-11 19:26:50,578 INFO L131 PetriNetUnfolder]: For 5121/6227 co-relation queries the response was YES. [2022-12-11 19:26:51,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52471 conditions, 37790 events. 8197/37790 cut-off events. For 5121/6227 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 528199 event pairs, 5158 based on Foata normal form. 104/33684 useless extension candidates. Maximal degree in co-relation 52344. Up to 8597 conditions per place. [2022-12-11 19:26:51,314 INFO L137 encePairwiseOnDemand]: 680/690 looper letters, 128 selfloop transitions, 7 changer transitions 10/772 dead transitions. [2022-12-11 19:26:51,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 772 transitions, 2376 flow [2022-12-11 19:26:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 19:26:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 19:26:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5953 transitions. [2022-12-11 19:26:51,321 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8627536231884058 [2022-12-11 19:26:51,321 INFO L175 Difference]: Start difference. First operand has 662 places, 694 transitions, 1895 flow. Second operand 10 states and 5953 transitions. [2022-12-11 19:26:51,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 772 transitions, 2376 flow [2022-12-11 19:26:51,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 772 transitions, 2369 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-11 19:26:51,340 INFO L231 Difference]: Finished difference. Result has 673 places, 697 transitions, 1929 flow [2022-12-11 19:26:51,341 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1929, PETRI_PLACES=673, PETRI_TRANSITIONS=697} [2022-12-11 19:26:51,341 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 59 predicate places. [2022-12-11 19:26:51,341 INFO L495 AbstractCegarLoop]: Abstraction has has 673 places, 697 transitions, 1929 flow [2022-12-11 19:26:51,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 586.875) internal successors, (4695), 8 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:51,343 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:51,343 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:51,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 19:26:51,343 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)] === [2022-12-11 19:26:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1956363951, now seen corresponding path program 1 times [2022-12-11 19:26:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:51,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37405538] [2022-12-11 19:26:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:51,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:51,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:51,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37405538] [2022-12-11 19:26:51,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37405538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:51,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:51,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:26:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156974419] [2022-12-11 19:26:51,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:51,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:26:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:26:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:26:51,509 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:26:51,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 697 transitions, 1929 flow. Second operand has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:51,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:51,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:26:51,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:54,329 INFO L130 PetriNetUnfolder]: 1364/13495 cut-off events. [2022-12-11 19:26:54,329 INFO L131 PetriNetUnfolder]: For 3418/3870 co-relation queries the response was YES. [2022-12-11 19:26:54,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18725 conditions, 13495 events. 1364/13495 cut-off events. For 3418/3870 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 162662 event pairs, 289 based on Foata normal form. 27/12326 useless extension candidates. Maximal degree in co-relation 18545. Up to 735 conditions per place. [2022-12-11 19:26:54,491 INFO L137 encePairwiseOnDemand]: 677/690 looper letters, 77 selfloop transitions, 19 changer transitions 6/757 dead transitions. [2022-12-11 19:26:54,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 757 transitions, 2383 flow [2022-12-11 19:26:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:26:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:26:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3198 transitions. [2022-12-11 19:26:54,496 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9269565217391305 [2022-12-11 19:26:54,496 INFO L175 Difference]: Start difference. First operand has 673 places, 697 transitions, 1929 flow. Second operand 5 states and 3198 transitions. [2022-12-11 19:26:54,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 757 transitions, 2383 flow [2022-12-11 19:26:54,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 757 transitions, 2372 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-11 19:26:54,533 INFO L231 Difference]: Finished difference. Result has 673 places, 708 transitions, 2089 flow [2022-12-11 19:26:54,534 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2089, PETRI_PLACES=673, PETRI_TRANSITIONS=708} [2022-12-11 19:26:54,534 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 59 predicate places. [2022-12-11 19:26:54,534 INFO L495 AbstractCegarLoop]: Abstraction has has 673 places, 708 transitions, 2089 flow [2022-12-11 19:26:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:54,535 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:54,535 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:54,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 19:26:54,535 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)] === [2022-12-11 19:26:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1286499615, now seen corresponding path program 2 times [2022-12-11 19:26:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:54,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104048730] [2022-12-11 19:26:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:54,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:54,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104048730] [2022-12-11 19:26:54,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104048730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:54,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:54,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:26:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427808482] [2022-12-11 19:26:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:26:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:26:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:26:54,682 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:26:54,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 708 transitions, 2089 flow. Second operand has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:54,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:54,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:26:54,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:57,825 INFO L130 PetriNetUnfolder]: 1356/14402 cut-off events. [2022-12-11 19:26:57,826 INFO L131 PetriNetUnfolder]: For 5573/6087 co-relation queries the response was YES. [2022-12-11 19:26:57,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20606 conditions, 14402 events. 1356/14402 cut-off events. For 5573/6087 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 176818 event pairs, 681 based on Foata normal form. 6/13097 useless extension candidates. Maximal degree in co-relation 20165. Up to 1430 conditions per place. [2022-12-11 19:26:58,015 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 76 selfloop transitions, 8 changer transitions 9/748 dead transitions. [2022-12-11 19:26:58,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 748 transitions, 2407 flow [2022-12-11 19:26:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:26:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:26:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3181 transitions. [2022-12-11 19:26:58,019 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9220289855072463 [2022-12-11 19:26:58,019 INFO L175 Difference]: Start difference. First operand has 673 places, 708 transitions, 2089 flow. Second operand 5 states and 3181 transitions. [2022-12-11 19:26:58,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 748 transitions, 2407 flow [2022-12-11 19:26:58,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 748 transitions, 2389 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:58,062 INFO L231 Difference]: Finished difference. Result has 679 places, 711 transitions, 2126 flow [2022-12-11 19:26:58,063 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2126, PETRI_PLACES=679, PETRI_TRANSITIONS=711} [2022-12-11 19:26:58,063 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 65 predicate places. [2022-12-11 19:26:58,063 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 711 transitions, 2126 flow [2022-12-11 19:26:58,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:58,064 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:58,065 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-11 19:26:58,065 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)] === [2022-12-11 19:26:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -55811161, now seen corresponding path program 3 times [2022-12-11 19:26:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:58,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469667353] [2022-12-11 19:26:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:58,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:58,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469667353] [2022-12-11 19:26:58,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469667353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:58,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:58,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:26:58,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391761333] [2022-12-11 19:26:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:58,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:26:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:58,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:26:58,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:26:58,388 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:26:58,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 711 transitions, 2126 flow. Second operand has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:58,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:58,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:26:58,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:01,506 INFO L130 PetriNetUnfolder]: 1371/14540 cut-off events. [2022-12-11 19:27:01,506 INFO L131 PetriNetUnfolder]: For 7205/7814 co-relation queries the response was YES. [2022-12-11 19:27:01,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20978 conditions, 14540 events. 1371/14540 cut-off events. For 7205/7814 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 178860 event pairs, 305 based on Foata normal form. 21/13297 useless extension candidates. Maximal degree in co-relation 20534. Up to 732 conditions per place. [2022-12-11 19:27:01,675 INFO L137 encePairwiseOnDemand]: 678/690 looper letters, 86 selfloop transitions, 26 changer transitions 4/771 dead transitions. [2022-12-11 19:27:01,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 771 transitions, 2683 flow [2022-12-11 19:27:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3197 transitions. [2022-12-11 19:27:01,679 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9266666666666666 [2022-12-11 19:27:01,679 INFO L175 Difference]: Start difference. First operand has 679 places, 711 transitions, 2126 flow. Second operand 5 states and 3197 transitions. [2022-12-11 19:27:01,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 771 transitions, 2683 flow [2022-12-11 19:27:01,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 771 transitions, 2661 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:27:01,725 INFO L231 Difference]: Finished difference. Result has 685 places, 725 transitions, 2380 flow [2022-12-11 19:27:01,726 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2380, PETRI_PLACES=685, PETRI_TRANSITIONS=725} [2022-12-11 19:27:01,726 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 71 predicate places. [2022-12-11 19:27:01,726 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 725 transitions, 2380 flow [2022-12-11 19:27:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:01,727 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:01,727 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:01,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-11 19:27:01,727 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)] === [2022-12-11 19:27:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -332413079, now seen corresponding path program 4 times [2022-12-11 19:27:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:01,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045616594] [2022-12-11 19:27:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:01,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:01,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:01,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045616594] [2022-12-11 19:27:01,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045616594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:01,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:01,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977471161] [2022-12-11 19:27:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:01,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:01,875 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:01,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 725 transitions, 2380 flow. Second operand has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:01,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:01,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:01,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:05,279 INFO L130 PetriNetUnfolder]: 1389/15336 cut-off events. [2022-12-11 19:27:05,279 INFO L131 PetriNetUnfolder]: For 9615/10386 co-relation queries the response was YES. [2022-12-11 19:27:05,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22532 conditions, 15336 events. 1389/15336 cut-off events. For 9615/10386 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 191036 event pairs, 633 based on Foata normal form. 17/13982 useless extension candidates. Maximal degree in co-relation 22080. Up to 1429 conditions per place. [2022-12-11 19:27:05,473 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 91 selfloop transitions, 10 changer transitions 10/766 dead transitions. [2022-12-11 19:27:05,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 766 transitions, 2767 flow [2022-12-11 19:27:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3184 transitions. [2022-12-11 19:27:05,477 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9228985507246377 [2022-12-11 19:27:05,477 INFO L175 Difference]: Start difference. First operand has 685 places, 725 transitions, 2380 flow. Second operand 5 states and 3184 transitions. [2022-12-11 19:27:05,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 766 transitions, 2767 flow [2022-12-11 19:27:05,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 766 transitions, 2748 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-11 19:27:05,523 INFO L231 Difference]: Finished difference. Result has 691 places, 728 transitions, 2435 flow [2022-12-11 19:27:05,524 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2435, PETRI_PLACES=691, PETRI_TRANSITIONS=728} [2022-12-11 19:27:05,524 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 77 predicate places. [2022-12-11 19:27:05,524 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 728 transitions, 2435 flow [2022-12-11 19:27:05,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:05,525 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:05,525 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-11 19:27:05,525 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)] === [2022-12-11 19:27:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash -283234877, now seen corresponding path program 5 times [2022-12-11 19:27:05,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:05,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787077859] [2022-12-11 19:27:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:05,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787077859] [2022-12-11 19:27:05,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787077859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:05,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:05,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948191726] [2022-12-11 19:27:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:05,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:05,688 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:05,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 728 transitions, 2435 flow. Second operand has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:05,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:05,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:05,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:09,168 INFO L130 PetriNetUnfolder]: 1422/15664 cut-off events. [2022-12-11 19:27:09,168 INFO L131 PetriNetUnfolder]: For 10912/11588 co-relation queries the response was YES. [2022-12-11 19:27:09,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22802 conditions, 15664 events. 1422/15664 cut-off events. For 10912/11588 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 195314 event pairs, 471 based on Foata normal form. 28/14257 useless extension candidates. Maximal degree in co-relation 22347. Up to 835 conditions per place. [2022-12-11 19:27:09,383 INFO L137 encePairwiseOnDemand]: 683/690 looper letters, 87 selfloop transitions, 18 changer transitions 2/762 dead transitions. [2022-12-11 19:27:09,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 762 transitions, 2808 flow [2022-12-11 19:27:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 19:27:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 19:27:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2555 transitions. [2022-12-11 19:27:09,385 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9257246376811594 [2022-12-11 19:27:09,385 INFO L175 Difference]: Start difference. First operand has 691 places, 728 transitions, 2435 flow. Second operand 4 states and 2555 transitions. [2022-12-11 19:27:09,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 762 transitions, 2808 flow [2022-12-11 19:27:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 762 transitions, 2792 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:27:09,433 INFO L231 Difference]: Finished difference. Result has 694 places, 730 transitions, 2516 flow [2022-12-11 19:27:09,434 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2516, PETRI_PLACES=694, PETRI_TRANSITIONS=730} [2022-12-11 19:27:09,435 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 80 predicate places. [2022-12-11 19:27:09,435 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 730 transitions, 2516 flow [2022-12-11 19:27:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:09,436 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:09,436 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-11 19:27:09,436 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)] === [2022-12-11 19:27:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2080587775, now seen corresponding path program 6 times [2022-12-11 19:27:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:09,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696590934] [2022-12-11 19:27:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:09,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:09,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696590934] [2022-12-11 19:27:09,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696590934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:09,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:09,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:09,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200378740] [2022-12-11 19:27:09,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:09,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:09,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:09,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:09,569 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:09,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 730 transitions, 2516 flow. Second operand has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:09,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:09,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:09,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:13,236 INFO L130 PetriNetUnfolder]: 1418/15670 cut-off events. [2022-12-11 19:27:13,236 INFO L131 PetriNetUnfolder]: For 12206/12967 co-relation queries the response was YES. [2022-12-11 19:27:13,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23130 conditions, 15670 events. 1418/15670 cut-off events. For 12206/12967 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 194679 event pairs, 443 based on Foata normal form. 26/14258 useless extension candidates. Maximal degree in co-relation 22670. Up to 850 conditions per place. [2022-12-11 19:27:13,426 INFO L137 encePairwiseOnDemand]: 683/690 looper letters, 89 selfloop transitions, 17 changer transitions 3/764 dead transitions. [2022-12-11 19:27:13,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 764 transitions, 2897 flow [2022-12-11 19:27:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 19:27:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 19:27:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2554 transitions. [2022-12-11 19:27:13,428 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9253623188405797 [2022-12-11 19:27:13,428 INFO L175 Difference]: Start difference. First operand has 694 places, 730 transitions, 2516 flow. Second operand 4 states and 2554 transitions. [2022-12-11 19:27:13,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 764 transitions, 2897 flow [2022-12-11 19:27:13,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 764 transitions, 2897 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 19:27:13,481 INFO L231 Difference]: Finished difference. Result has 699 places, 731 transitions, 2592 flow [2022-12-11 19:27:13,482 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2592, PETRI_PLACES=699, PETRI_TRANSITIONS=731} [2022-12-11 19:27:13,483 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 85 predicate places. [2022-12-11 19:27:13,483 INFO L495 AbstractCegarLoop]: Abstraction has has 699 places, 731 transitions, 2592 flow [2022-12-11 19:27:13,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:13,484 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:13,484 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:13,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-11 19:27:13,484 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)] === [2022-12-11 19:27:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash -953174558, now seen corresponding path program 1 times [2022-12-11 19:27:13,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:13,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670205885] [2022-12-11 19:27:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:13,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:13,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670205885] [2022-12-11 19:27:13,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670205885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:13,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:13,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:13,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634277131] [2022-12-11 19:27:13,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:13,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:13,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:13,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:13,636 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:13,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 731 transitions, 2592 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:13,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:13,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:13,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:17,325 INFO L130 PetriNetUnfolder]: 1461/16578 cut-off events. [2022-12-11 19:27:17,325 INFO L131 PetriNetUnfolder]: For 14544/15413 co-relation queries the response was YES. [2022-12-11 19:27:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24417 conditions, 16578 events. 1461/16578 cut-off events. For 14544/15413 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 209612 event pairs, 642 based on Foata normal form. 36/15091 useless extension candidates. Maximal degree in co-relation 23951. Up to 1364 conditions per place. [2022-12-11 19:27:17,527 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 95 selfloop transitions, 13 changer transitions 9/772 dead transitions. [2022-12-11 19:27:17,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 703 places, 772 transitions, 2996 flow [2022-12-11 19:27:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3185 transitions. [2022-12-11 19:27:17,529 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9231884057971015 [2022-12-11 19:27:17,530 INFO L175 Difference]: Start difference. First operand has 699 places, 731 transitions, 2592 flow. Second operand 5 states and 3185 transitions. [2022-12-11 19:27:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 703 places, 772 transitions, 2996 flow [2022-12-11 19:27:17,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 772 transitions, 2996 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 19:27:17,585 INFO L231 Difference]: Finished difference. Result has 706 places, 733 transitions, 2654 flow [2022-12-11 19:27:17,586 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2654, PETRI_PLACES=706, PETRI_TRANSITIONS=733} [2022-12-11 19:27:17,587 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 92 predicate places. [2022-12-11 19:27:17,587 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 733 transitions, 2654 flow [2022-12-11 19:27:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:17,588 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:17,588 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:17,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-11 19:27:17,588 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)] === [2022-12-11 19:27:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -56148962, now seen corresponding path program 2 times [2022-12-11 19:27:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:17,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972343271] [2022-12-11 19:27:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:17,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972343271] [2022-12-11 19:27:17,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972343271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:17,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:17,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423472851] [2022-12-11 19:27:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:17,722 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:17,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 733 transitions, 2654 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:17,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:17,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:17,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:21,616 INFO L130 PetriNetUnfolder]: 1486/17280 cut-off events. [2022-12-11 19:27:21,616 INFO L131 PetriNetUnfolder]: For 16402/17403 co-relation queries the response was YES. [2022-12-11 19:27:21,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25539 conditions, 17280 events. 1486/17280 cut-off events. For 16402/17403 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 221385 event pairs, 663 based on Foata normal form. 60/15749 useless extension candidates. Maximal degree in co-relation 25069. Up to 1406 conditions per place. [2022-12-11 19:27:21,850 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 92 selfloop transitions, 15 changer transitions 10/772 dead transitions. [2022-12-11 19:27:21,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 772 transitions, 3060 flow [2022-12-11 19:27:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3185 transitions. [2022-12-11 19:27:21,853 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9231884057971015 [2022-12-11 19:27:21,853 INFO L175 Difference]: Start difference. First operand has 706 places, 733 transitions, 2654 flow. Second operand 5 states and 3185 transitions. [2022-12-11 19:27:21,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 772 transitions, 3060 flow [2022-12-11 19:27:21,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 772 transitions, 3034 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:27:21,917 INFO L231 Difference]: Finished difference. Result has 711 places, 735 transitions, 2706 flow [2022-12-11 19:27:21,918 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2706, PETRI_PLACES=711, PETRI_TRANSITIONS=735} [2022-12-11 19:27:21,918 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 97 predicate places. [2022-12-11 19:27:21,918 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 735 transitions, 2706 flow [2022-12-11 19:27:21,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:21,919 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:21,919 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-11 19:27:21,919 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)] === [2022-12-11 19:27:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash -613274004, now seen corresponding path program 1 times [2022-12-11 19:27:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827228567] [2022-12-11 19:27:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:22,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827228567] [2022-12-11 19:27:22,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827228567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:22,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:22,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204321682] [2022-12-11 19:27:22,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:22,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:22,071 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:22,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 735 transitions, 2706 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:22,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:22,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:22,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:25,782 INFO L130 PetriNetUnfolder]: 1444/16480 cut-off events. [2022-12-11 19:27:25,782 INFO L131 PetriNetUnfolder]: For 17795/18787 co-relation queries the response was YES. [2022-12-11 19:27:25,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24937 conditions, 16480 events. 1444/16480 cut-off events. For 17795/18787 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 209612 event pairs, 479 based on Foata normal form. 36/15023 useless extension candidates. Maximal degree in co-relation 24465. Up to 934 conditions per place. [2022-12-11 19:27:26,022 INFO L137 encePairwiseOnDemand]: 683/690 looper letters, 88 selfloop transitions, 20 changer transitions 3/766 dead transitions. [2022-12-11 19:27:26,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 766 transitions, 3075 flow [2022-12-11 19:27:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 19:27:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 19:27:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2556 transitions. [2022-12-11 19:27:26,024 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9260869565217391 [2022-12-11 19:27:26,024 INFO L175 Difference]: Start difference. First operand has 711 places, 735 transitions, 2706 flow. Second operand 4 states and 2556 transitions. [2022-12-11 19:27:26,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 766 transitions, 3075 flow [2022-12-11 19:27:26,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 766 transitions, 3047 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 19:27:26,088 INFO L231 Difference]: Finished difference. Result has 714 places, 736 transitions, 2765 flow [2022-12-11 19:27:26,088 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2765, PETRI_PLACES=714, PETRI_TRANSITIONS=736} [2022-12-11 19:27:26,089 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 100 predicate places. [2022-12-11 19:27:26,089 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 736 transitions, 2765 flow [2022-12-11 19:27:26,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:26,090 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:26,090 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-11 19:27:26,090 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)] === [2022-12-11 19:27:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2086156576, now seen corresponding path program 2 times [2022-12-11 19:27:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:26,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140712562] [2022-12-11 19:27:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:26,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:26,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:26,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140712562] [2022-12-11 19:27:26,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140712562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:26,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:26,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712690988] [2022-12-11 19:27:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:26,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:26,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:26,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:26,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:26,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:26,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 736 transitions, 2765 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:26,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:26,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:26,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:29,758 INFO L130 PetriNetUnfolder]: 1382/15352 cut-off events. [2022-12-11 19:27:29,759 INFO L131 PetriNetUnfolder]: For 20404/21562 co-relation queries the response was YES. [2022-12-11 19:27:29,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24132 conditions, 15352 events. 1382/15352 cut-off events. For 20404/21562 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 193677 event pairs, 347 based on Foata normal form. 44/14074 useless extension candidates. Maximal degree in co-relation 23655. Up to 811 conditions per place. [2022-12-11 19:27:30,070 INFO L137 encePairwiseOnDemand]: 678/690 looper letters, 107 selfloop transitions, 32 changer transitions 3/797 dead transitions. [2022-12-11 19:27:30,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 797 transitions, 3474 flow [2022-12-11 19:27:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3201 transitions. [2022-12-11 19:27:30,072 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9278260869565217 [2022-12-11 19:27:30,072 INFO L175 Difference]: Start difference. First operand has 714 places, 736 transitions, 2765 flow. Second operand 5 states and 3201 transitions. [2022-12-11 19:27:30,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 797 transitions, 3474 flow [2022-12-11 19:27:30,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 797 transitions, 3457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:27:30,145 INFO L231 Difference]: Finished difference. Result has 721 places, 747 transitions, 3060 flow [2022-12-11 19:27:30,146 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3060, PETRI_PLACES=721, PETRI_TRANSITIONS=747} [2022-12-11 19:27:30,146 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 107 predicate places. [2022-12-11 19:27:30,146 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 747 transitions, 3060 flow [2022-12-11 19:27:30,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:30,147 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:30,148 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-11 19:27:30,148 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)] === [2022-12-11 19:27:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1316335368, now seen corresponding path program 3 times [2022-12-11 19:27:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:30,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681393518] [2022-12-11 19:27:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:30,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:30,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681393518] [2022-12-11 19:27:30,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681393518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:30,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:30,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:30,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640199496] [2022-12-11 19:27:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:30,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:30,286 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:30,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 747 transitions, 3060 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:30,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:30,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:34,232 INFO L130 PetriNetUnfolder]: 1446/16911 cut-off events. [2022-12-11 19:27:34,232 INFO L131 PetriNetUnfolder]: For 24328/25402 co-relation queries the response was YES. [2022-12-11 19:27:34,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26575 conditions, 16911 events. 1446/16911 cut-off events. For 24328/25402 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 216034 event pairs, 461 based on Foata normal form. 41/15428 useless extension candidates. Maximal degree in co-relation 26090. Up to 904 conditions per place. [2022-12-11 19:27:34,459 INFO L137 encePairwiseOnDemand]: 683/690 looper letters, 98 selfloop transitions, 25 changer transitions 2/780 dead transitions. [2022-12-11 19:27:34,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 780 transitions, 3498 flow [2022-12-11 19:27:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 19:27:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 19:27:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2556 transitions. [2022-12-11 19:27:34,462 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9260869565217391 [2022-12-11 19:27:34,462 INFO L175 Difference]: Start difference. First operand has 721 places, 747 transitions, 3060 flow. Second operand 4 states and 2556 transitions. [2022-12-11 19:27:34,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 780 transitions, 3498 flow [2022-12-11 19:27:34,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 780 transitions, 3424 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-11 19:27:34,551 INFO L231 Difference]: Finished difference. Result has 723 places, 749 transitions, 3122 flow [2022-12-11 19:27:34,552 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3122, PETRI_PLACES=723, PETRI_TRANSITIONS=749} [2022-12-11 19:27:34,552 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 109 predicate places. [2022-12-11 19:27:34,552 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 749 transitions, 3122 flow [2022-12-11 19:27:34,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:34,553 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:34,553 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:34,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-11 19:27:34,553 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)] === [2022-12-11 19:27:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1982010298, now seen corresponding path program 4 times [2022-12-11 19:27:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:34,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545077231] [2022-12-11 19:27:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:34,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:34,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545077231] [2022-12-11 19:27:34,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545077231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:34,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:34,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:34,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393546614] [2022-12-11 19:27:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:34,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:34,673 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:34,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 749 transitions, 3122 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:34,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:34,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:34,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:38,326 INFO L130 PetriNetUnfolder]: 1393/16094 cut-off events. [2022-12-11 19:27:38,326 INFO L131 PetriNetUnfolder]: For 26367/27487 co-relation queries the response was YES. [2022-12-11 19:27:38,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25971 conditions, 16094 events. 1393/16094 cut-off events. For 26367/27487 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 204631 event pairs, 330 based on Foata normal form. 61/14784 useless extension candidates. Maximal degree in co-relation 25484. Up to 659 conditions per place. [2022-12-11 19:27:38,518 INFO L137 encePairwiseOnDemand]: 677/690 looper letters, 120 selfloop transitions, 37 changer transitions 8/820 dead transitions. [2022-12-11 19:27:38,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 727 places, 820 transitions, 4013 flow [2022-12-11 19:27:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3200 transitions. [2022-12-11 19:27:38,521 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-12-11 19:27:38,521 INFO L175 Difference]: Start difference. First operand has 723 places, 749 transitions, 3122 flow. Second operand 5 states and 3200 transitions. [2022-12-11 19:27:38,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 727 places, 820 transitions, 4013 flow [2022-12-11 19:27:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 820 transitions, 3995 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:27:38,626 INFO L231 Difference]: Finished difference. Result has 730 places, 762 transitions, 3494 flow [2022-12-11 19:27:38,627 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3494, PETRI_PLACES=730, PETRI_TRANSITIONS=762} [2022-12-11 19:27:38,627 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 116 predicate places. [2022-12-11 19:27:38,627 INFO L495 AbstractCegarLoop]: Abstraction has has 730 places, 762 transitions, 3494 flow [2022-12-11 19:27:38,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:38,628 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:38,628 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-11 19:27:38,629 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)] === [2022-12-11 19:27:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1667083690, now seen corresponding path program 5 times [2022-12-11 19:27:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969716541] [2022-12-11 19:27:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:38,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969716541] [2022-12-11 19:27:38,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969716541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:38,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:38,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:38,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430065917] [2022-12-11 19:27:38,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:38,876 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:38,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 762 transitions, 3494 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:38,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:38,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:38,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:42,548 INFO L130 PetriNetUnfolder]: 1374/16066 cut-off events. [2022-12-11 19:27:42,548 INFO L131 PetriNetUnfolder]: For 30185/31334 co-relation queries the response was YES. [2022-12-11 19:27:42,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26687 conditions, 16066 events. 1374/16066 cut-off events. For 30185/31334 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 203658 event pairs, 519 based on Foata normal form. 41/14752 useless extension candidates. Maximal degree in co-relation 26190. Up to 1188 conditions per place. [2022-12-11 19:27:42,864 INFO L137 encePairwiseOnDemand]: 682/690 looper letters, 123 selfloop transitions, 26 changer transitions 11/815 dead transitions. [2022-12-11 19:27:42,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 815 transitions, 4359 flow [2022-12-11 19:27:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 19:27:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 19:27:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2558 transitions. [2022-12-11 19:27:42,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9268115942028986 [2022-12-11 19:27:42,866 INFO L175 Difference]: Start difference. First operand has 730 places, 762 transitions, 3494 flow. Second operand 4 states and 2558 transitions. [2022-12-11 19:27:42,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 815 transitions, 4359 flow [2022-12-11 19:27:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 815 transitions, 4292 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-11 19:27:42,996 INFO L231 Difference]: Finished difference. Result has 734 places, 766 transitions, 3631 flow [2022-12-11 19:27:42,997 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3439, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3631, PETRI_PLACES=734, PETRI_TRANSITIONS=766} [2022-12-11 19:27:42,997 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 120 predicate places. [2022-12-11 19:27:42,997 INFO L495 AbstractCegarLoop]: Abstraction has has 734 places, 766 transitions, 3631 flow [2022-12-11 19:27:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:42,998 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:42,998 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-11 19:27:42,999 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)] === [2022-12-11 19:27:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2110758610, now seen corresponding path program 6 times [2022-12-11 19:27:42,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:42,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605343625] [2022-12-11 19:27:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:43,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605343625] [2022-12-11 19:27:43,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605343625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:43,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:43,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:43,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455430544] [2022-12-11 19:27:43,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:43,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:43,144 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:43,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 766 transitions, 3631 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:43,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:43,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:43,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:47,029 INFO L130 PetriNetUnfolder]: 1380/16132 cut-off events. [2022-12-11 19:27:47,029 INFO L131 PetriNetUnfolder]: For 30855/32093 co-relation queries the response was YES. [2022-12-11 19:27:47,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27033 conditions, 16132 events. 1380/16132 cut-off events. For 30855/32093 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 206810 event pairs, 380 based on Foata normal form. 85/14879 useless extension candidates. Maximal degree in co-relation 26533. Up to 755 conditions per place. [2022-12-11 19:27:47,230 INFO L137 encePairwiseOnDemand]: 678/690 looper letters, 135 selfloop transitions, 41 changer transitions 9/840 dead transitions. [2022-12-11 19:27:47,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 840 transitions, 4583 flow [2022-12-11 19:27:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3204 transitions. [2022-12-11 19:27:47,234 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.928695652173913 [2022-12-11 19:27:47,234 INFO L175 Difference]: Start difference. First operand has 734 places, 766 transitions, 3631 flow. Second operand 5 states and 3204 transitions. [2022-12-11 19:27:47,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 840 transitions, 4583 flow [2022-12-11 19:27:47,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 840 transitions, 4558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:27:47,501 INFO L231 Difference]: Finished difference. Result has 740 places, 775 transitions, 3880 flow [2022-12-11 19:27:47,502 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3880, PETRI_PLACES=740, PETRI_TRANSITIONS=775} [2022-12-11 19:27:47,504 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 126 predicate places. [2022-12-11 19:27:47,505 INFO L495 AbstractCegarLoop]: Abstraction has has 740 places, 775 transitions, 3880 flow [2022-12-11 19:27:47,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:47,505 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:47,506 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:47,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-11 19:27:47,506 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)] === [2022-12-11 19:27:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash 88351036, now seen corresponding path program 3 times [2022-12-11 19:27:47,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:47,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156140067] [2022-12-11 19:27:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:47,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156140067] [2022-12-11 19:27:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156140067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:47,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:47,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382745299] [2022-12-11 19:27:47,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:47,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:47,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:47,650 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:47,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 775 transitions, 3880 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:47,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:47,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:47,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:51,855 INFO L130 PetriNetUnfolder]: 1498/18082 cut-off events. [2022-12-11 19:27:51,856 INFO L131 PetriNetUnfolder]: For 34245/35539 co-relation queries the response was YES. [2022-12-11 19:27:52,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29642 conditions, 18082 events. 1498/18082 cut-off events. For 34245/35539 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 235246 event pairs, 680 based on Foata normal form. 70/16536 useless extension candidates. Maximal degree in co-relation 29135. Up to 1582 conditions per place. [2022-12-11 19:27:52,119 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 124 selfloop transitions, 24 changer transitions 10/813 dead transitions. [2022-12-11 19:27:52,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 813 transitions, 4408 flow [2022-12-11 19:27:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3182 transitions. [2022-12-11 19:27:52,122 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9223188405797101 [2022-12-11 19:27:52,123 INFO L175 Difference]: Start difference. First operand has 740 places, 775 transitions, 3880 flow. Second operand 5 states and 3182 transitions. [2022-12-11 19:27:52,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 813 transitions, 4408 flow [2022-12-11 19:27:52,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 813 transitions, 4398 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-12-11 19:27:52,273 INFO L231 Difference]: Finished difference. Result has 747 places, 777 transitions, 3980 flow [2022-12-11 19:27:52,273 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3980, PETRI_PLACES=747, PETRI_TRANSITIONS=777} [2022-12-11 19:27:52,274 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 133 predicate places. [2022-12-11 19:27:52,274 INFO L495 AbstractCegarLoop]: Abstraction has has 747 places, 777 transitions, 3980 flow [2022-12-11 19:27:52,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:52,275 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:52,275 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-11 19:27:52,275 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:27:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -983916562, now seen corresponding path program 4 times [2022-12-11 19:27:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:52,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220663875] [2022-12-11 19:27:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:52,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:52,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220663875] [2022-12-11 19:27:52,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220663875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:52,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:52,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:52,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143153565] [2022-12-11 19:27:52,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:52,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:52,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:52,554 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:52,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 777 transitions, 3980 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:52,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:52,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:56,801 INFO L130 PetriNetUnfolder]: 1458/17472 cut-off events. [2022-12-11 19:27:56,801 INFO L131 PetriNetUnfolder]: For 37738/39026 co-relation queries the response was YES. [2022-12-11 19:27:57,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29317 conditions, 17472 events. 1458/17472 cut-off events. For 37738/39026 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 226231 event pairs, 715 based on Foata normal form. 37/15956 useless extension candidates. Maximal degree in co-relation 28806. Up to 1690 conditions per place. [2022-12-11 19:27:57,045 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 129 selfloop transitions, 21 changer transitions 8/813 dead transitions. [2022-12-11 19:27:57,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 813 transitions, 4494 flow [2022-12-11 19:27:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:27:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:27:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3179 transitions. [2022-12-11 19:27:57,047 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9214492753623188 [2022-12-11 19:27:57,047 INFO L175 Difference]: Start difference. First operand has 747 places, 777 transitions, 3980 flow. Second operand 5 states and 3179 transitions. [2022-12-11 19:27:57,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 813 transitions, 4494 flow [2022-12-11 19:27:57,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 813 transitions, 4448 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:27:57,222 INFO L231 Difference]: Finished difference. Result has 752 places, 779 transitions, 4037 flow [2022-12-11 19:27:57,223 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=745, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4037, PETRI_PLACES=752, PETRI_TRANSITIONS=779} [2022-12-11 19:27:57,223 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 138 predicate places. [2022-12-11 19:27:57,223 INFO L495 AbstractCegarLoop]: Abstraction has has 752 places, 779 transitions, 4037 flow [2022-12-11 19:27:57,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:57,224 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:57,224 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-11 19:27:57,224 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:27:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1280205580, now seen corresponding path program 5 times [2022-12-11 19:27:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:57,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506794802] [2022-12-11 19:27:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:57,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:57,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506794802] [2022-12-11 19:27:57,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506794802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:57,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:57,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:27:57,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772890890] [2022-12-11 19:27:57,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:57,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:27:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:57,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:27:57,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:27:57,345 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:27:57,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 779 transitions, 4037 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:57,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:57,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:27:57,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:28:01,367 INFO L130 PetriNetUnfolder]: 1378/15774 cut-off events. [2022-12-11 19:28:01,367 INFO L131 PetriNetUnfolder]: For 38200/39494 co-relation queries the response was YES. [2022-12-11 19:28:01,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27557 conditions, 15774 events. 1378/15774 cut-off events. For 38200/39494 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 201687 event pairs, 537 based on Foata normal form. 65/14511 useless extension candidates. Maximal degree in co-relation 27044. Up to 1232 conditions per place. [2022-12-11 19:28:01,569 INFO L137 encePairwiseOnDemand]: 682/690 looper letters, 125 selfloop transitions, 32 changer transitions 5/817 dead transitions. [2022-12-11 19:28:01,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 817 transitions, 4636 flow [2022-12-11 19:28:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 19:28:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 19:28:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2557 transitions. [2022-12-11 19:28:01,573 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9264492753623188 [2022-12-11 19:28:01,573 INFO L175 Difference]: Start difference. First operand has 752 places, 779 transitions, 4037 flow. Second operand 4 states and 2557 transitions. [2022-12-11 19:28:01,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 817 transitions, 4636 flow [2022-12-11 19:28:01,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 752 places, 817 transitions, 4574 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-11 19:28:01,773 INFO L231 Difference]: Finished difference. Result has 753 places, 779 transitions, 4056 flow [2022-12-11 19:28:01,774 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3979, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4056, PETRI_PLACES=753, PETRI_TRANSITIONS=779} [2022-12-11 19:28:01,774 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 139 predicate places. [2022-12-11 19:28:01,775 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 779 transitions, 4056 flow [2022-12-11 19:28:01,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:01,775 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:01,775 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-11 19:28:01,776 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:28:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash 578368940, now seen corresponding path program 6 times [2022-12-11 19:28:01,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:01,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770672525] [2022-12-11 19:28:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:01,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:01,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770672525] [2022-12-11 19:28:01,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770672525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:01,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:01,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 19:28:01,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456330389] [2022-12-11 19:28:01,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:01,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 19:28:01,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 19:28:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 19:28:01,912 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 622 out of 690 [2022-12-11 19:28:01,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 779 transitions, 4056 flow. Second operand has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:01,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:01,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 622 of 690 [2022-12-11 19:28:01,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:28:05,756 INFO L130 PetriNetUnfolder]: 1373/15337 cut-off events. [2022-12-11 19:28:05,757 INFO L131 PetriNetUnfolder]: For 39933/41279 co-relation queries the response was YES. [2022-12-11 19:28:05,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26889 conditions, 15337 events. 1373/15337 cut-off events. For 39933/41279 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 195140 event pairs, 388 based on Foata normal form. 107/14180 useless extension candidates. Maximal degree in co-relation 26374. Up to 760 conditions per place. [2022-12-11 19:28:05,973 INFO L137 encePairwiseOnDemand]: 678/690 looper letters, 135 selfloop transitions, 44 changer transitions 6/840 dead transitions. [2022-12-11 19:28:05,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 840 transitions, 4814 flow [2022-12-11 19:28:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:28:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:28:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3204 transitions. [2022-12-11 19:28:05,975 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.928695652173913 [2022-12-11 19:28:05,975 INFO L175 Difference]: Start difference. First operand has 753 places, 779 transitions, 4056 flow. Second operand 5 states and 3204 transitions. [2022-12-11 19:28:05,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 840 transitions, 4814 flow [2022-12-11 19:28:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 840 transitions, 4754 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:28:06,144 INFO L231 Difference]: Finished difference. Result has 758 places, 783 transitions, 4180 flow [2022-12-11 19:28:06,144 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4180, PETRI_PLACES=758, PETRI_TRANSITIONS=783} [2022-12-11 19:28:06,144 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 144 predicate places. [2022-12-11 19:28:06,144 INFO L495 AbstractCegarLoop]: Abstraction has has 758 places, 783 transitions, 4180 flow [2022-12-11 19:28:06,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 627.25) internal successors, (2509), 4 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:06,145 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:06,145 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:06,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-11 19:28:06,145 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:28:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1771766632, now seen corresponding path program 1 times [2022-12-11 19:28:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399958040] [2022-12-11 19:28:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:06,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399958040] [2022-12-11 19:28:06,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399958040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:06,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:06,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:28:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405623120] [2022-12-11 19:28:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:28:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:28:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:28:06,485 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:28:06,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 783 transitions, 4180 flow. Second operand has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:06,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:06,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:28:06,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:28:24,779 INFO L130 PetriNetUnfolder]: 10427/61467 cut-off events. [2022-12-11 19:28:24,780 INFO L131 PetriNetUnfolder]: For 367780/374490 co-relation queries the response was YES. [2022-12-11 19:28:26,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147917 conditions, 61467 events. 10427/61467 cut-off events. For 367780/374490 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 943645 event pairs, 3852 based on Foata normal form. 301/57109 useless extension candidates. Maximal degree in co-relation 147398. Up to 7377 conditions per place. [2022-12-11 19:28:26,841 INFO L137 encePairwiseOnDemand]: 669/690 looper letters, 325 selfloop transitions, 79 changer transitions 67/1088 dead transitions. [2022-12-11 19:28:26,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 1088 transitions, 10087 flow [2022-12-11 19:28:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:28:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:28:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5477 transitions. [2022-12-11 19:28:26,845 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8819645732689211 [2022-12-11 19:28:26,845 INFO L175 Difference]: Start difference. First operand has 758 places, 783 transitions, 4180 flow. Second operand 9 states and 5477 transitions. [2022-12-11 19:28:26,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 1088 transitions, 10087 flow [2022-12-11 19:28:30,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 1088 transitions, 9798 flow, removed 37 selfloop flow, removed 3 redundant places. [2022-12-11 19:28:30,058 INFO L231 Difference]: Finished difference. Result has 770 places, 857 transitions, 6018 flow [2022-12-11 19:28:30,059 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6018, PETRI_PLACES=770, PETRI_TRANSITIONS=857} [2022-12-11 19:28:30,059 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 156 predicate places. [2022-12-11 19:28:30,059 INFO L495 AbstractCegarLoop]: Abstraction has has 770 places, 857 transitions, 6018 flow [2022-12-11 19:28:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:30,060 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:30,060 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:30,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-11 19:28:30,060 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:28:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1796050246, now seen corresponding path program 2 times [2022-12-11 19:28:30,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:30,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612823918] [2022-12-11 19:28:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:30,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:30,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612823918] [2022-12-11 19:28:30,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612823918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:30,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:30,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:28:30,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192458734] [2022-12-11 19:28:30,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:30,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:28:30,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:30,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:28:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:28:30,410 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:28:30,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 857 transitions, 6018 flow. Second operand has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:30,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:30,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:28:30,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:28:50,715 INFO L130 PetriNetUnfolder]: 10709/70875 cut-off events. [2022-12-11 19:28:50,715 INFO L131 PetriNetUnfolder]: For 479705/484800 co-relation queries the response was YES. [2022-12-11 19:28:52,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151978 conditions, 70875 events. 10709/70875 cut-off events. For 479705/484800 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 1125763 event pairs, 1488 based on Foata normal form. 2284/68726 useless extension candidates. Maximal degree in co-relation 151453. Up to 7312 conditions per place. [2022-12-11 19:28:52,850 INFO L137 encePairwiseOnDemand]: 676/690 looper letters, 339 selfloop transitions, 77 changer transitions 77/1110 dead transitions. [2022-12-11 19:28:52,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 1110 transitions, 10328 flow [2022-12-11 19:28:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:28:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:28:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6658 transitions. [2022-12-11 19:28:52,854 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8772068511198946 [2022-12-11 19:28:52,854 INFO L175 Difference]: Start difference. First operand has 770 places, 857 transitions, 6018 flow. Second operand 11 states and 6658 transitions. [2022-12-11 19:28:52,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 1110 transitions, 10328 flow [2022-12-11 19:28:55,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 1110 transitions, 10268 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-12-11 19:28:55,834 INFO L231 Difference]: Finished difference. Result has 782 places, 852 transitions, 5891 flow [2022-12-11 19:28:55,835 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5891, PETRI_PLACES=782, PETRI_TRANSITIONS=852} [2022-12-11 19:28:55,835 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 168 predicate places. [2022-12-11 19:28:55,835 INFO L495 AbstractCegarLoop]: Abstraction has has 782 places, 852 transitions, 5891 flow [2022-12-11 19:28:55,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:55,836 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:55,836 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-11 19:28:55,837 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:28:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1834825604, now seen corresponding path program 3 times [2022-12-11 19:28:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602160875] [2022-12-11 19:28:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:56,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602160875] [2022-12-11 19:28:56,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602160875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:56,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:56,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:28:56,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431632047] [2022-12-11 19:28:56,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:56,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:28:56,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:56,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:28:56,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:28:56,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:28:56,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 852 transitions, 5891 flow. Second operand has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:56,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:56,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:28:56,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:29:22,459 INFO L130 PetriNetUnfolder]: 11614/91746 cut-off events. [2022-12-11 19:29:22,459 INFO L131 PetriNetUnfolder]: For 272290/278088 co-relation queries the response was YES. [2022-12-11 19:29:25,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181597 conditions, 91746 events. 11614/91746 cut-off events. For 272290/278088 co-relation queries the response was YES. Maximal size of possible extension queue 1734. Compared 1548710 event pairs, 5635 based on Foata normal form. 229/85570 useless extension candidates. Maximal degree in co-relation 181067. Up to 11842 conditions per place. [2022-12-11 19:29:25,668 INFO L137 encePairwiseOnDemand]: 670/690 looper letters, 317 selfloop transitions, 95 changer transitions 64/1093 dead transitions. [2022-12-11 19:29:25,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 1093 transitions, 9887 flow [2022-12-11 19:29:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:29:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:29:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5465 transitions. [2022-12-11 19:29:25,671 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8800322061191627 [2022-12-11 19:29:25,671 INFO L175 Difference]: Start difference. First operand has 782 places, 852 transitions, 5891 flow. Second operand 9 states and 5465 transitions. [2022-12-11 19:29:25,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 1093 transitions, 9887 flow [2022-12-11 19:29:29,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 1093 transitions, 9707 flow, removed 80 selfloop flow, removed 1 redundant places. [2022-12-11 19:29:29,173 INFO L231 Difference]: Finished difference. Result has 796 places, 901 transitions, 6855 flow [2022-12-11 19:29:29,174 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=5784, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=782, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6855, PETRI_PLACES=796, PETRI_TRANSITIONS=901} [2022-12-11 19:29:29,175 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 182 predicate places. [2022-12-11 19:29:29,175 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 901 transitions, 6855 flow [2022-12-11 19:29:29,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:29:29,175 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:29:29,176 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:29:29,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-11 19:29:29,176 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:29:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:29:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -810044848, now seen corresponding path program 4 times [2022-12-11 19:29:29,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:29:29,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158410303] [2022-12-11 19:29:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:29:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:29:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:29:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:29:29,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:29:29,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158410303] [2022-12-11 19:29:29,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158410303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:29:29,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:29:29,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:29:29,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597869548] [2022-12-11 19:29:29,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:29:29,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:29:29,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:29:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:29:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:29:29,459 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:29:29,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 901 transitions, 6855 flow. Second operand has 6 states, 6 states have (on average 591.1666666666666) internal successors, (3547), 6 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:29:29,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:29:29,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:29:29,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:29:55,616 INFO L130 PetriNetUnfolder]: 11354/76290 cut-off events. [2022-12-11 19:29:55,617 INFO L131 PetriNetUnfolder]: For 277698/286310 co-relation queries the response was YES. [2022-12-11 19:29:58,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168964 conditions, 76290 events. 11354/76290 cut-off events. For 277698/286310 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 1230679 event pairs, 3131 based on Foata normal form. 167/72015 useless extension candidates. Maximal degree in co-relation 168429. Up to 12480 conditions per place. [2022-12-11 19:29:58,439 INFO L137 encePairwiseOnDemand]: 678/690 looper letters, 380 selfloop transitions, 69 changer transitions 38/1106 dead transitions. [2022-12-11 19:29:58,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 1106 transitions, 10705 flow [2022-12-11 19:29:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:29:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:29:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4282 transitions. [2022-12-11 19:29:58,442 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8865424430641822 [2022-12-11 19:29:58,442 INFO L175 Difference]: Start difference. First operand has 796 places, 901 transitions, 6855 flow. Second operand 7 states and 4282 transitions. [2022-12-11 19:29:58,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 1106 transitions, 10705 flow [2022-12-11 19:30:02,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 1106 transitions, 10551 flow, removed 77 selfloop flow, removed 0 redundant places. [2022-12-11 19:30:02,554 INFO L231 Difference]: Finished difference. Result has 806 places, 926 transitions, 7827 flow [2022-12-11 19:30:02,555 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=6745, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7827, PETRI_PLACES=806, PETRI_TRANSITIONS=926} [2022-12-11 19:30:02,555 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 192 predicate places. [2022-12-11 19:30:02,555 INFO L495 AbstractCegarLoop]: Abstraction has has 806 places, 926 transitions, 7827 flow [2022-12-11 19:30:02,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 591.1666666666666) internal successors, (3547), 6 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:30:02,556 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:30:02,556 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:30:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-11 19:30:02,556 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:30:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:30:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1794269390, now seen corresponding path program 5 times [2022-12-11 19:30:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:30:02,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682935961] [2022-12-11 19:30:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:30:02,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:30:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:30:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:30:02,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:30:02,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682935961] [2022-12-11 19:30:02,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682935961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:30:02,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:30:02,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:30:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650903005] [2022-12-11 19:30:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:30:02,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:30:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:30:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:30:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:30:02,824 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:30:02,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 926 transitions, 7827 flow. Second operand has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:30:02,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:30:02,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:30:02,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:30:31,377 INFO L130 PetriNetUnfolder]: 11418/79570 cut-off events. [2022-12-11 19:30:31,377 INFO L131 PetriNetUnfolder]: For 290403/297762 co-relation queries the response was YES. [2022-12-11 19:30:34,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172673 conditions, 79570 events. 11418/79570 cut-off events. For 290403/297762 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 1302883 event pairs, 3477 based on Foata normal form. 171/74754 useless extension candidates. Maximal degree in co-relation 172128. Up to 8554 conditions per place. [2022-12-11 19:30:34,634 INFO L137 encePairwiseOnDemand]: 669/690 looper letters, 297 selfloop transitions, 143 changer transitions 97/1154 dead transitions. [2022-12-11 19:30:34,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 1154 transitions, 10908 flow [2022-12-11 19:30:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:30:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:30:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5493 transitions. [2022-12-11 19:30:34,636 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8845410628019323 [2022-12-11 19:30:34,637 INFO L175 Difference]: Start difference. First operand has 806 places, 926 transitions, 7827 flow. Second operand 9 states and 5493 transitions. [2022-12-11 19:30:34,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 1154 transitions, 10908 flow [2022-12-11 19:30:38,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 1154 transitions, 10888 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-12-11 19:30:38,717 INFO L231 Difference]: Finished difference. Result has 818 places, 928 transitions, 7924 flow [2022-12-11 19:30:38,718 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=7815, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7924, PETRI_PLACES=818, PETRI_TRANSITIONS=928} [2022-12-11 19:30:38,718 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 204 predicate places. [2022-12-11 19:30:38,719 INFO L495 AbstractCegarLoop]: Abstraction has has 818 places, 928 transitions, 7924 flow [2022-12-11 19:30:38,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:30:38,719 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:30:38,719 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:30:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-11 19:30:38,720 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:30:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:30:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash 157758350, now seen corresponding path program 6 times [2022-12-11 19:30:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:30:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063584741] [2022-12-11 19:30:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:30:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:30:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:30:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:30:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:30:39,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063584741] [2022-12-11 19:30:39,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063584741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:30:39,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:30:39,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:30:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829274241] [2022-12-11 19:30:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:30:39,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:30:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:30:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:30:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:30:39,012 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:30:39,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 928 transitions, 7924 flow. Second operand has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:30:39,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:30:39,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:30:39,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:31:10,995 INFO L130 PetriNetUnfolder]: 11376/88044 cut-off events. [2022-12-11 19:31:10,995 INFO L131 PetriNetUnfolder]: For 320019/327921 co-relation queries the response was YES. [2022-12-11 19:31:14,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185703 conditions, 88044 events. 11376/88044 cut-off events. For 320019/327921 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 1477777 event pairs, 5111 based on Foata normal form. 306/82698 useless extension candidates. Maximal degree in co-relation 185150. Up to 9595 conditions per place. [2022-12-11 19:31:14,327 INFO L137 encePairwiseOnDemand]: 672/690 looper letters, 307 selfloop transitions, 149 changer transitions 53/1126 dead transitions. [2022-12-11 19:31:14,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 1126 transitions, 10555 flow [2022-12-11 19:31:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 19:31:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 19:31:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4902 transitions. [2022-12-11 19:31:14,330 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8880434782608696 [2022-12-11 19:31:14,330 INFO L175 Difference]: Start difference. First operand has 818 places, 928 transitions, 7924 flow. Second operand 8 states and 4902 transitions. [2022-12-11 19:31:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 1126 transitions, 10555 flow [2022-12-11 19:31:19,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1126 transitions, 10396 flow, removed 37 selfloop flow, removed 4 redundant places. [2022-12-11 19:31:19,510 INFO L231 Difference]: Finished difference. Result has 826 places, 954 transitions, 8696 flow [2022-12-11 19:31:19,511 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8696, PETRI_PLACES=826, PETRI_TRANSITIONS=954} [2022-12-11 19:31:19,511 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 212 predicate places. [2022-12-11 19:31:19,512 INFO L495 AbstractCegarLoop]: Abstraction has has 826 places, 954 transitions, 8696 flow [2022-12-11 19:31:19,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:31:19,512 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:31:19,512 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:31:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-11 19:31:19,513 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:31:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:31:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2005618448, now seen corresponding path program 7 times [2022-12-11 19:31:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:31:19,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693269535] [2022-12-11 19:31:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:31:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:31:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:31:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:31:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:31:19,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693269535] [2022-12-11 19:31:19,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693269535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:31:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:31:19,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:31:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411381981] [2022-12-11 19:31:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:31:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:31:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:31:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:31:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:31:19,847 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:31:19,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 954 transitions, 8696 flow. Second operand has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:31:19,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:31:19,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:31:19,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:31:55,629 INFO L130 PetriNetUnfolder]: 14560/96999 cut-off events. [2022-12-11 19:31:55,629 INFO L131 PetriNetUnfolder]: For 423508/432574 co-relation queries the response was YES. [2022-12-11 19:31:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222380 conditions, 96999 events. 14560/96999 cut-off events. For 423508/432574 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1625577 event pairs, 4363 based on Foata normal form. 247/91342 useless extension candidates. Maximal degree in co-relation 221827. Up to 9847 conditions per place. [2022-12-11 19:31:59,319 INFO L137 encePairwiseOnDemand]: 669/690 looper letters, 440 selfloop transitions, 125 changer transitions 69/1251 dead transitions. [2022-12-11 19:31:59,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 1251 transitions, 13245 flow [2022-12-11 19:31:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:31:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:31:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6708 transitions. [2022-12-11 19:31:59,324 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8837944664031621 [2022-12-11 19:31:59,324 INFO L175 Difference]: Start difference. First operand has 826 places, 954 transitions, 8696 flow. Second operand 11 states and 6708 transitions. [2022-12-11 19:31:59,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 1251 transitions, 13245 flow [2022-12-11 19:32:06,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 1251 transitions, 13119 flow, removed 63 selfloop flow, removed 0 redundant places. [2022-12-11 19:32:06,439 INFO L231 Difference]: Finished difference. Result has 843 places, 987 transitions, 9761 flow [2022-12-11 19:32:06,440 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=8596, PETRI_DIFFERENCE_MINUEND_PLACES=826, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9761, PETRI_PLACES=843, PETRI_TRANSITIONS=987} [2022-12-11 19:32:06,440 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 229 predicate places. [2022-12-11 19:32:06,440 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 987 transitions, 9761 flow [2022-12-11 19:32:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:32:06,441 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:32:06,441 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:32:06,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-11 19:32:06,442 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:32:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:32:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1234595804, now seen corresponding path program 8 times [2022-12-11 19:32:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:32:06,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473745226] [2022-12-11 19:32:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:32:06,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:32:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:32:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:32:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:32:06,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473745226] [2022-12-11 19:32:06,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473745226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:32:06,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:32:06,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:32:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568170133] [2022-12-11 19:32:06,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:32:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:32:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:32:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:32:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:32:06,730 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:32:06,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 987 transitions, 9761 flow. Second operand has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:32:06,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:32:06,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:32:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:32:43,949 INFO L130 PetriNetUnfolder]: 14610/100140 cut-off events. [2022-12-11 19:32:43,949 INFO L131 PetriNetUnfolder]: For 414325/424679 co-relation queries the response was YES. [2022-12-11 19:32:47,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226209 conditions, 100140 events. 14610/100140 cut-off events. For 414325/424679 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 1698824 event pairs, 6471 based on Foata normal form. 316/94218 useless extension candidates. Maximal degree in co-relation 225645. Up to 15059 conditions per place. [2022-12-11 19:32:48,319 INFO L137 encePairwiseOnDemand]: 667/690 looper letters, 373 selfloop transitions, 191 changer transitions 35/1216 dead transitions. [2022-12-11 19:32:48,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 853 places, 1216 transitions, 13836 flow [2022-12-11 19:32:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:32:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:32:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6652 transitions. [2022-12-11 19:32:48,322 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8764163372859025 [2022-12-11 19:32:48,322 INFO L175 Difference]: Start difference. First operand has 843 places, 987 transitions, 9761 flow. Second operand 11 states and 6652 transitions. [2022-12-11 19:32:48,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 853 places, 1216 transitions, 13836 flow [2022-12-11 19:32:54,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 849 places, 1216 transitions, 13703 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-12-11 19:32:54,861 INFO L231 Difference]: Finished difference. Result has 855 places, 1020 transitions, 10923 flow [2022-12-11 19:32:54,861 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=9575, PETRI_DIFFERENCE_MINUEND_PLACES=839, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=985, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10923, PETRI_PLACES=855, PETRI_TRANSITIONS=1020} [2022-12-11 19:32:54,861 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 241 predicate places. [2022-12-11 19:32:54,862 INFO L495 AbstractCegarLoop]: Abstraction has has 855 places, 1020 transitions, 10923 flow [2022-12-11 19:32:54,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 589.5) internal successors, (3537), 6 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:32:54,862 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:32:54,862 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:32:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-11 19:32:54,863 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:32:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:32:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2067654056, now seen corresponding path program 9 times [2022-12-11 19:32:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:32:54,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087274097] [2022-12-11 19:32:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:32:54,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:32:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:32:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:32:55,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:32:55,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087274097] [2022-12-11 19:32:55,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087274097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:32:55,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:32:55,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:32:55,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692302055] [2022-12-11 19:32:55,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:32:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:32:55,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:32:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:32:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:32:55,156 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:32:55,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 1020 transitions, 10923 flow. Second operand has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:32:55,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:32:55,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:32:55,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:34,858 INFO L130 PetriNetUnfolder]: 15676/109580 cut-off events. [2022-12-11 19:33:34,859 INFO L131 PetriNetUnfolder]: For 449897/458163 co-relation queries the response was YES. [2022-12-11 19:33:39,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248173 conditions, 109580 events. 15676/109580 cut-off events. For 449897/458163 co-relation queries the response was YES. Maximal size of possible extension queue 2103. Compared 1881929 event pairs, 6031 based on Foata normal form. 465/102902 useless extension candidates. Maximal degree in co-relation 247607. Up to 12341 conditions per place. [2022-12-11 19:33:39,897 INFO L137 encePairwiseOnDemand]: 668/690 looper letters, 382 selfloop transitions, 204 changer transitions 60/1263 dead transitions. [2022-12-11 19:33:39,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 866 places, 1263 transitions, 14820 flow [2022-12-11 19:33:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 19:33:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 19:33:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 7246 transitions. [2022-12-11 19:33:39,900 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8751207729468599 [2022-12-11 19:33:39,900 INFO L175 Difference]: Start difference. First operand has 855 places, 1020 transitions, 10923 flow. Second operand 12 states and 7246 transitions. [2022-12-11 19:33:39,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 866 places, 1263 transitions, 14820 flow [2022-12-11 19:33:46,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 1263 transitions, 14727 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-11 19:33:46,599 INFO L231 Difference]: Finished difference. Result has 866 places, 1047 transitions, 11609 flow [2022-12-11 19:33:46,600 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=10174, PETRI_DIFFERENCE_MINUEND_PLACES=851, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11609, PETRI_PLACES=866, PETRI_TRANSITIONS=1047} [2022-12-11 19:33:46,600 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 252 predicate places. [2022-12-11 19:33:46,600 INFO L495 AbstractCegarLoop]: Abstraction has has 866 places, 1047 transitions, 11609 flow [2022-12-11 19:33:46,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:33:46,600 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:46,601 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:46,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-11 19:33:46,601 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:33:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1384948290, now seen corresponding path program 10 times [2022-12-11 19:33:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:46,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115436554] [2022-12-11 19:33:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:46,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:33:46,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:46,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115436554] [2022-12-11 19:33:46,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115436554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:33:46,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:33:46,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:33:46,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128151990] [2022-12-11 19:33:46,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:46,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:33:46,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:46,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:33:46,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:33:46,869 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:33:46,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 1047 transitions, 11609 flow. Second operand has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:33:46,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:46,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:33:46,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:34:28,663 INFO L130 PetriNetUnfolder]: 15132/116997 cut-off events. [2022-12-11 19:34:28,663 INFO L131 PetriNetUnfolder]: For 429337/439320 co-relation queries the response was YES. [2022-12-11 19:34:34,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257723 conditions, 116997 events. 15132/116997 cut-off events. For 429337/439320 co-relation queries the response was YES. Maximal size of possible extension queue 2236. Compared 2055617 event pairs, 7193 based on Foata normal form. 459/109630 useless extension candidates. Maximal degree in co-relation 257154. Up to 17190 conditions per place. [2022-12-11 19:34:34,980 INFO L137 encePairwiseOnDemand]: 645/690 looper letters, 339 selfloop transitions, 301 changer transitions 112/1369 dead transitions. [2022-12-11 19:34:34,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 1369 transitions, 17163 flow [2022-12-11 19:34:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-11 19:34:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-11 19:34:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 9043 transitions. [2022-12-11 19:34:34,991 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.873719806763285 [2022-12-11 19:34:34,992 INFO L175 Difference]: Start difference. First operand has 866 places, 1047 transitions, 11609 flow. Second operand 15 states and 9043 transitions. [2022-12-11 19:34:34,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 1369 transitions, 17163 flow