/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 14:21:09,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 14:21:09,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 14:21:09,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 14:21:09,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 14:21:09,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 14:21:09,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 14:21:09,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 14:21:09,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 14:21:09,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 14:21:09,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 14:21:09,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 14:21:09,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 14:21:09,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 14:21:09,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 14:21:09,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 14:21:09,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 14:21:09,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 14:21:09,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 14:21:09,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 14:21:09,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 14:21:09,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 14:21:09,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 14:21:09,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 14:21:09,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 14:21:09,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 14:21:09,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 14:21:09,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 14:21:09,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 14:21:09,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 14:21:09,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 14:21:09,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 14:21:09,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 14:21:09,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 14:21:09,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 14:21:09,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 14:21:09,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 14:21:09,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 14:21:09,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 14:21:09,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 14:21:09,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 14:21:09,801 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-After.epf [2022-01-19 14:21:09,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 14:21:09,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 14:21:09,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 14:21:09,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 14:21:09,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 14:21:09,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 14:21:09,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 14:21:09,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:21:09,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 14:21:09,829 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 14:21:09,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 14:21:09,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 14:21:10,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 14:21:10,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 14:21:10,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 14:21:10,016 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 14:21:10,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2022-01-19 14:21:10,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9bb76e4/e3f9e438157f47c19e30566710e42810/FLAGbd1756e70 [2022-01-19 14:21:10,448 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 14:21:10,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2022-01-19 14:21:10,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9bb76e4/e3f9e438157f47c19e30566710e42810/FLAGbd1756e70 [2022-01-19 14:21:10,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9bb76e4/e3f9e438157f47c19e30566710e42810 [2022-01-19 14:21:10,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 14:21:10,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 14:21:10,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 14:21:10,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 14:21:10,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 14:21:10,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a7c59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10, skipping insertion in model container [2022-01-19 14:21:10,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 14:21:10,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 14:21:10,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-01-19 14:21:10,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:21:10,662 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 14:21:10,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-01-19 14:21:10,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:21:10,696 INFO L208 MainTranslator]: Completed translation [2022-01-19 14:21:10,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10 WrapperNode [2022-01-19 14:21:10,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 14:21:10,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 14:21:10,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 14:21:10,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 14:21:10,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,726 INFO L137 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 303 [2022-01-19 14:21:10,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 14:21:10,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 14:21:10,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 14:21:10,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 14:21:10,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 14:21:10,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 14:21:10,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 14:21:10,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 14:21:10,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (1/1) ... [2022-01-19 14:21:10,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:21:10,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:21:10,799 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) [2022-01-19 14:21:10,826 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 [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 14:21:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 14:21:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 14:21:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 14:21:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 14:21:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 14:21:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 14:21:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 14:21:10,844 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 14:21:10,962 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 14:21:10,963 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 14:21:11,299 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 14:21:11,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 14:21:11,463 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 14:21:11,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:21:11 BoogieIcfgContainer [2022-01-19 14:21:11,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 14:21:11,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 14:21:11,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 14:21:11,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 14:21:11,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:21:10" (1/3) ... [2022-01-19 14:21:11,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ed0823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:21:11, skipping insertion in model container [2022-01-19 14:21:11,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:21:10" (2/3) ... [2022-01-19 14:21:11,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ed0823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:21:11, skipping insertion in model container [2022-01-19 14:21:11,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:21:11" (3/3) ... [2022-01-19 14:21:11,476 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-01-19 14:21:11,480 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 14:21:11,480 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 14:21:11,480 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 14:21:11,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,526 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,526 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,526 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,526 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,527 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,528 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,531 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,531 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,531 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,531 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,531 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,531 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,538 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:21:11,548 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 14:21:11,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 14:21:11,585 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 14:21:11,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 14:21:11,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 229 transitions, 490 flow [2022-01-19 14:21:11,656 INFO L129 PetriNetUnfolder]: 18/225 cut-off events. [2022-01-19 14:21:11,656 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 14:21:11,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 225 events. 18/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 113 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2022-01-19 14:21:11,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 229 transitions, 490 flow [2022-01-19 14:21:11,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 212 transitions, 448 flow [2022-01-19 14:21:11,712 INFO L129 PetriNetUnfolder]: 18/211 cut-off events. [2022-01-19 14:21:11,712 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 14:21:11,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:11,713 INFO L254 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] [2022-01-19 14:21:11,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 238758714, now seen corresponding path program 1 times [2022-01-19 14:21:11,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:11,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273880096] [2022-01-19 14:21:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:11,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:21:11,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:11,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273880096] [2022-01-19 14:21:11,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273880096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:11,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:11,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 14:21:11,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32136681] [2022-01-19 14:21:11,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:11,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 14:21:11,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 14:21:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 14:21:11,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 229 [2022-01-19 14:21:11,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 212 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:11,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:11,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 229 [2022-01-19 14:21:11,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:12,060 INFO L129 PetriNetUnfolder]: 123/515 cut-off events. [2022-01-19 14:21:12,060 INFO L130 PetriNetUnfolder]: For 105/106 co-relation queries the response was YES. [2022-01-19 14:21:12,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 515 events. 123/515 cut-off events. For 105/106 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1702 event pairs, 51 based on Foata normal form. 125/579 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2022-01-19 14:21:12,068 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 12 selfloop transitions, 0 changer transitions 6/200 dead transitions. [2022-01-19 14:21:12,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 448 flow [2022-01-19 14:21:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 14:21:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 14:21:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2022-01-19 14:21:12,081 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9432314410480349 [2022-01-19 14:21:12,082 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2022-01-19 14:21:12,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2022-01-19 14:21:12,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:12,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2022-01-19 14:21:12,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,095 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,097 INFO L186 Difference]: Start difference. First operand has 207 places, 212 transitions, 448 flow. Second operand 2 states and 432 transitions. [2022-01-19 14:21:12,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 448 flow [2022-01-19 14:21:12,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 200 transitions, 432 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 14:21:12,104 INFO L242 Difference]: Finished difference. Result has 200 places, 194 transitions, 396 flow [2022-01-19 14:21:12,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2022-01-19 14:21:12,112 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -7 predicate places. [2022-01-19 14:21:12,112 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 396 flow [2022-01-19 14:21:12,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:12,114 INFO L254 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] [2022-01-19 14:21:12,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 14:21:12,119 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash -399207150, now seen corresponding path program 1 times [2022-01-19 14:21:12,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:12,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809842736] [2022-01-19 14:21:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:12,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:21:12,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809842736] [2022-01-19 14:21:12,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809842736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:12,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:12,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 14:21:12,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531794689] [2022-01-19 14:21:12,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:12,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 14:21:12,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 14:21:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 14:21:12,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 229 [2022-01-19 14:21:12,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:12,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 229 [2022-01-19 14:21:12,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:12,506 INFO L129 PetriNetUnfolder]: 133/509 cut-off events. [2022-01-19 14:21:12,506 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-01-19 14:21:12,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 509 events. 133/509 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1579 event pairs, 14 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 724. Up to 133 conditions per place. [2022-01-19 14:21:12,510 INFO L132 encePairwiseOnDemand]: 223/229 looper letters, 42 selfloop transitions, 3 changer transitions 4/206 dead transitions. [2022-01-19 14:21:12,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 206 transitions, 523 flow [2022-01-19 14:21:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 14:21:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 14:21:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-01-19 14:21:12,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7991266375545851 [2022-01-19 14:21:12,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-01-19 14:21:12,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-01-19 14:21:12,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:12,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-01-19 14:21:12,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,518 INFO L186 Difference]: Start difference. First operand has 200 places, 194 transitions, 396 flow. Second operand 5 states and 915 transitions. [2022-01-19 14:21:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 206 transitions, 523 flow [2022-01-19 14:21:12,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 206 transitions, 523 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 14:21:12,521 INFO L242 Difference]: Finished difference. Result has 201 places, 196 transitions, 419 flow [2022-01-19 14:21:12,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-01-19 14:21:12,522 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2022-01-19 14:21:12,522 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 419 flow [2022-01-19 14:21:12,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:12,526 INFO L254 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] [2022-01-19 14:21:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 14:21:12,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1096965397, now seen corresponding path program 1 times [2022-01-19 14:21:12,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411209902] [2022-01-19 14:21:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:12,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:21:12,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:12,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411209902] [2022-01-19 14:21:12,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411209902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:12,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:12,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 14:21:12,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4652940] [2022-01-19 14:21:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:12,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 14:21:12,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 14:21:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 14:21:12,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2022-01-19 14:21:12,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:12,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2022-01-19 14:21:12,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:12,765 INFO L129 PetriNetUnfolder]: 208/754 cut-off events. [2022-01-19 14:21:12,765 INFO L130 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-01-19 14:21:12,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 754 events. 208/754 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3325 event pairs, 75 based on Foata normal form. 12/668 useless extension candidates. Maximal degree in co-relation 1178. Up to 207 conditions per place. [2022-01-19 14:21:12,769 INFO L132 encePairwiseOnDemand]: 226/229 looper letters, 30 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2022-01-19 14:21:12,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 519 flow [2022-01-19 14:21:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 14:21:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 14:21:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2022-01-19 14:21:12,772 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9082969432314411 [2022-01-19 14:21:12,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2022-01-19 14:21:12,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2022-01-19 14:21:12,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:12,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2022-01-19 14:21:12,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,776 INFO L186 Difference]: Start difference. First operand has 201 places, 196 transitions, 419 flow. Second operand 3 states and 624 transitions. [2022-01-19 14:21:12,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 519 flow [2022-01-19 14:21:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 208 transitions, 511 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 14:21:12,780 INFO L242 Difference]: Finished difference. Result has 199 places, 197 transitions, 426 flow [2022-01-19 14:21:12,780 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2022-01-19 14:21:12,780 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2022-01-19 14:21:12,781 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 426 flow [2022-01-19 14:21:12,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:12,781 INFO L254 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] [2022-01-19 14:21:12,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 14:21:12,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash -422545413, now seen corresponding path program 1 times [2022-01-19 14:21:12,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:12,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988111965] [2022-01-19 14:21:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:12,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:21:12,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:12,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988111965] [2022-01-19 14:21:12,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988111965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:12,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:12,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 14:21:12,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867801176] [2022-01-19 14:21:12,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:12,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 14:21:12,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 14:21:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 14:21:12,883 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2022-01-19 14:21:12,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:12,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2022-01-19 14:21:12,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:12,983 INFO L129 PetriNetUnfolder]: 152/674 cut-off events. [2022-01-19 14:21:12,983 INFO L130 PetriNetUnfolder]: For 210/211 co-relation queries the response was YES. [2022-01-19 14:21:12,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 674 events. 152/674 cut-off events. For 210/211 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2850 event pairs, 47 based on Foata normal form. 12/606 useless extension candidates. Maximal degree in co-relation 1064. Up to 171 conditions per place. [2022-01-19 14:21:12,988 INFO L132 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2022-01-19 14:21:12,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 209 transitions, 535 flow [2022-01-19 14:21:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 14:21:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 14:21:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2022-01-19 14:21:12,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9068413391557496 [2022-01-19 14:21:12,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2022-01-19 14:21:12,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2022-01-19 14:21:12,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:12,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2022-01-19 14:21:12,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:12,992 INFO L186 Difference]: Start difference. First operand has 199 places, 197 transitions, 426 flow. Second operand 3 states and 623 transitions. [2022-01-19 14:21:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 209 transitions, 535 flow [2022-01-19 14:21:12,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 209 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:21:12,999 INFO L242 Difference]: Finished difference. Result has 201 places, 198 transitions, 438 flow [2022-01-19 14:21:13,000 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2022-01-19 14:21:13,001 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2022-01-19 14:21:13,001 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 438 flow [2022-01-19 14:21:13,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:13,002 INFO L254 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] [2022-01-19 14:21:13,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 14:21:13,002 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:13,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash -532077630, now seen corresponding path program 1 times [2022-01-19 14:21:13,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:13,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724833676] [2022-01-19 14:21:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:13,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:21:13,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:13,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724833676] [2022-01-19 14:21:13,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724833676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:13,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:13,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 14:21:13,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585074308] [2022-01-19 14:21:13,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:13,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 14:21:13,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 14:21:13,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 14:21:13,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2022-01-19 14:21:13,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:13,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2022-01-19 14:21:13,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:13,264 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2022-01-19 14:21:13,264 INFO L130 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2022-01-19 14:21:13,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 708 events. 107/708 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2830 event pairs, 36 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 1135. Up to 155 conditions per place. [2022-01-19 14:21:13,268 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 60 selfloop transitions, 11 changer transitions 0/227 dead transitions. [2022-01-19 14:21:13,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 227 transitions, 659 flow [2022-01-19 14:21:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 14:21:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 14:21:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1668 transitions. [2022-01-19 14:21:13,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8093158660844251 [2022-01-19 14:21:13,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1668 transitions. [2022-01-19 14:21:13,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1668 transitions. [2022-01-19 14:21:13,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:13,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1668 transitions. [2022-01-19 14:21:13,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,278 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,278 INFO L186 Difference]: Start difference. First operand has 201 places, 198 transitions, 438 flow. Second operand 9 states and 1668 transitions. [2022-01-19 14:21:13,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 227 transitions, 659 flow [2022-01-19 14:21:13,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 227 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:21:13,282 INFO L242 Difference]: Finished difference. Result has 210 places, 202 transitions, 478 flow [2022-01-19 14:21:13,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=210, PETRI_TRANSITIONS=202} [2022-01-19 14:21:13,284 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 3 predicate places. [2022-01-19 14:21:13,284 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 202 transitions, 478 flow [2022-01-19 14:21:13,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:13,285 INFO L254 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] [2022-01-19 14:21:13,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 14:21:13,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:13,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1814960024, now seen corresponding path program 1 times [2022-01-19 14:21:13,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:13,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117091390] [2022-01-19 14:21:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:13,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:21:13,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117091390] [2022-01-19 14:21:13,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117091390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:13,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:13,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 14:21:13,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864597942] [2022-01-19 14:21:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:13,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 14:21:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:13,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 14:21:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 14:21:13,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2022-01-19 14:21:13,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 202 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:13,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2022-01-19 14:21:13,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:13,510 INFO L129 PetriNetUnfolder]: 123/934 cut-off events. [2022-01-19 14:21:13,510 INFO L130 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2022-01-19 14:21:13,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 934 events. 123/934 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4507 event pairs, 42 based on Foata normal form. 15/868 useless extension candidates. Maximal degree in co-relation 1469. Up to 198 conditions per place. [2022-01-19 14:21:13,515 INFO L132 encePairwiseOnDemand]: 221/229 looper letters, 55 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-01-19 14:21:13,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 660 flow [2022-01-19 14:21:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 14:21:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 14:21:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1300 transitions. [2022-01-19 14:21:13,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.810979413599501 [2022-01-19 14:21:13,517 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1300 transitions. [2022-01-19 14:21:13,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1300 transitions. [2022-01-19 14:21:13,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:13,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1300 transitions. [2022-01-19 14:21:13,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,522 INFO L186 Difference]: Start difference. First operand has 210 places, 202 transitions, 478 flow. Second operand 7 states and 1300 transitions. [2022-01-19 14:21:13,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 660 flow [2022-01-19 14:21:13,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 219 transitions, 651 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 14:21:13,527 INFO L242 Difference]: Finished difference. Result has 215 places, 204 transitions, 499 flow [2022-01-19 14:21:13,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=215, PETRI_TRANSITIONS=204} [2022-01-19 14:21:13,529 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 8 predicate places. [2022-01-19 14:21:13,529 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 204 transitions, 499 flow [2022-01-19 14:21:13,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:13,530 INFO L254 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] [2022-01-19 14:21:13,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 14:21:13,530 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 669279275, now seen corresponding path program 1 times [2022-01-19 14:21:13,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:13,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725797124] [2022-01-19 14:21:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:13,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:21:13,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:13,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725797124] [2022-01-19 14:21:13,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725797124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:13,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:13,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:21:13,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826292734] [2022-01-19 14:21:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:13,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:21:13,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:21:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:21:13,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:21:13,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 204 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:13,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:13,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:21:13,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:14,938 INFO L129 PetriNetUnfolder]: 5032/10171 cut-off events. [2022-01-19 14:21:14,938 INFO L130 PetriNetUnfolder]: For 3380/3421 co-relation queries the response was YES. [2022-01-19 14:21:14,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20365 conditions, 10171 events. 5032/10171 cut-off events. For 3380/3421 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82194 event pairs, 1257 based on Foata normal form. 22/8514 useless extension candidates. Maximal degree in co-relation 20354. Up to 3533 conditions per place. [2022-01-19 14:21:14,995 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 77 selfloop transitions, 14 changer transitions 30/288 dead transitions. [2022-01-19 14:21:14,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 288 transitions, 989 flow [2022-01-19 14:21:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 14:21:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 14:21:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1949 transitions. [2022-01-19 14:21:14,998 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8510917030567685 [2022-01-19 14:21:14,998 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1949 transitions. [2022-01-19 14:21:14,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1949 transitions. [2022-01-19 14:21:14,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:14,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1949 transitions. [2022-01-19 14:21:15,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 194.9) internal successors, (1949), 10 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:15,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:15,006 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:15,006 INFO L186 Difference]: Start difference. First operand has 215 places, 204 transitions, 499 flow. Second operand 10 states and 1949 transitions. [2022-01-19 14:21:15,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 288 transitions, 989 flow [2022-01-19 14:21:15,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 288 transitions, 977 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 14:21:15,013 INFO L242 Difference]: Finished difference. Result has 226 places, 213 transitions, 590 flow [2022-01-19 14:21:15,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2022-01-19 14:21:15,014 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 19 predicate places. [2022-01-19 14:21:15,014 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 590 flow [2022-01-19 14:21:15,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:15,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:15,015 INFO L254 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] [2022-01-19 14:21:15,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 14:21:15,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:15,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1474183133, now seen corresponding path program 2 times [2022-01-19 14:21:15,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:15,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612222291] [2022-01-19 14:21:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:15,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:21:15,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:15,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612222291] [2022-01-19 14:21:15,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612222291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:15,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:15,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:21:15,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041108611] [2022-01-19 14:21:15,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:15,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:21:15,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:21:15,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:21:15,232 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:21:15,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:15,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:15,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:21:15,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:16,652 INFO L129 PetriNetUnfolder]: 6104/12058 cut-off events. [2022-01-19 14:21:16,652 INFO L130 PetriNetUnfolder]: For 8646/8646 co-relation queries the response was YES. [2022-01-19 14:21:16,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28044 conditions, 12058 events. 6104/12058 cut-off events. For 8646/8646 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 98974 event pairs, 549 based on Foata normal form. 228/11618 useless extension candidates. Maximal degree in co-relation 28027. Up to 3770 conditions per place. [2022-01-19 14:21:16,719 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 120 selfloop transitions, 29 changer transitions 9/325 dead transitions. [2022-01-19 14:21:16,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 325 transitions, 1344 flow [2022-01-19 14:21:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 14:21:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 14:21:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2339 transitions. [2022-01-19 14:21:16,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8511644832605532 [2022-01-19 14:21:16,723 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2339 transitions. [2022-01-19 14:21:16,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2339 transitions. [2022-01-19 14:21:16,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:16,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2339 transitions. [2022-01-19 14:21:16,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 194.91666666666666) internal successors, (2339), 12 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:16,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:16,731 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:16,731 INFO L186 Difference]: Start difference. First operand has 226 places, 213 transitions, 590 flow. Second operand 12 states and 2339 transitions. [2022-01-19 14:21:16,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 325 transitions, 1344 flow [2022-01-19 14:21:16,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 325 transitions, 1322 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-01-19 14:21:16,772 INFO L242 Difference]: Finished difference. Result has 241 places, 233 transitions, 836 flow [2022-01-19 14:21:16,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=836, PETRI_PLACES=241, PETRI_TRANSITIONS=233} [2022-01-19 14:21:16,773 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 34 predicate places. [2022-01-19 14:21:16,773 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 233 transitions, 836 flow [2022-01-19 14:21:16,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:16,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:16,774 INFO L254 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] [2022-01-19 14:21:16,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 14:21:16,774 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash 934827895, now seen corresponding path program 3 times [2022-01-19 14:21:16,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:16,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118930852] [2022-01-19 14:21:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:16,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:21:16,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118930852] [2022-01-19 14:21:16,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118930852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:16,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:16,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:21:16,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981421322] [2022-01-19 14:21:16,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:16,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:21:16,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:21:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:21:16,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:21:16,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 233 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:16,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:16,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:21:16,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:19,483 INFO L129 PetriNetUnfolder]: 10658/22126 cut-off events. [2022-01-19 14:21:19,484 INFO L130 PetriNetUnfolder]: For 34447/34487 co-relation queries the response was YES. [2022-01-19 14:21:19,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57739 conditions, 22126 events. 10658/22126 cut-off events. For 34447/34487 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 208929 event pairs, 1398 based on Foata normal form. 236/20101 useless extension candidates. Maximal degree in co-relation 57714. Up to 4916 conditions per place. [2022-01-19 14:21:19,630 INFO L132 encePairwiseOnDemand]: 216/229 looper letters, 166 selfloop transitions, 84 changer transitions 13/431 dead transitions. [2022-01-19 14:21:19,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 431 transitions, 2407 flow [2022-01-19 14:21:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 14:21:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 14:21:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3135 transitions. [2022-01-19 14:21:19,635 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8556222707423581 [2022-01-19 14:21:19,635 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3135 transitions. [2022-01-19 14:21:19,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3135 transitions. [2022-01-19 14:21:19,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:19,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3135 transitions. [2022-01-19 14:21:19,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 195.9375) internal successors, (3135), 16 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:19,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 229.0) internal successors, (3893), 17 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:19,645 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 229.0) internal successors, (3893), 17 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:19,645 INFO L186 Difference]: Start difference. First operand has 241 places, 233 transitions, 836 flow. Second operand 16 states and 3135 transitions. [2022-01-19 14:21:19,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 431 transitions, 2407 flow [2022-01-19 14:21:19,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 431 transitions, 2337 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-01-19 14:21:19,890 INFO L242 Difference]: Finished difference. Result has 263 places, 294 transitions, 1651 flow [2022-01-19 14:21:19,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1651, PETRI_PLACES=263, PETRI_TRANSITIONS=294} [2022-01-19 14:21:19,891 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 56 predicate places. [2022-01-19 14:21:19,891 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 294 transitions, 1651 flow [2022-01-19 14:21:19,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:19,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:19,896 INFO L254 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] [2022-01-19 14:21:19,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 14:21:19,897 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash -159364171, now seen corresponding path program 4 times [2022-01-19 14:21:19,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:19,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918928911] [2022-01-19 14:21:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:19,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:21:20,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:20,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918928911] [2022-01-19 14:21:20,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918928911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:20,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:20,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:21:20,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547711597] [2022-01-19 14:21:20,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:20,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:21:20,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:20,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:21:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:21:20,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-01-19 14:21:20,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 294 transitions, 1651 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:20,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:20,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-01-19 14:21:20,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:24,326 INFO L129 PetriNetUnfolder]: 15536/31805 cut-off events. [2022-01-19 14:21:24,326 INFO L130 PetriNetUnfolder]: For 99348/101637 co-relation queries the response was YES. [2022-01-19 14:21:24,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102982 conditions, 31805 events. 15536/31805 cut-off events. For 99348/101637 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 315638 event pairs, 1837 based on Foata normal form. 428/30049 useless extension candidates. Maximal degree in co-relation 102947. Up to 10136 conditions per place. [2022-01-19 14:21:24,571 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 212 selfloop transitions, 140 changer transitions 6/534 dead transitions. [2022-01-19 14:21:24,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 534 transitions, 4389 flow [2022-01-19 14:21:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 14:21:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 14:21:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2402 transitions. [2022-01-19 14:21:24,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8740902474526928 [2022-01-19 14:21:24,575 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2402 transitions. [2022-01-19 14:21:24,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2402 transitions. [2022-01-19 14:21:24,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:24,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2402 transitions. [2022-01-19 14:21:24,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 200.16666666666666) internal successors, (2402), 12 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:24,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:24,582 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:24,582 INFO L186 Difference]: Start difference. First operand has 263 places, 294 transitions, 1651 flow. Second operand 12 states and 2402 transitions. [2022-01-19 14:21:24,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 534 transitions, 4389 flow [2022-01-19 14:21:25,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 534 transitions, 4235 flow, removed 30 selfloop flow, removed 3 redundant places. [2022-01-19 14:21:25,428 INFO L242 Difference]: Finished difference. Result has 279 places, 385 transitions, 3236 flow [2022-01-19 14:21:25,429 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3236, PETRI_PLACES=279, PETRI_TRANSITIONS=385} [2022-01-19 14:21:25,429 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 72 predicate places. [2022-01-19 14:21:25,429 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 385 transitions, 3236 flow [2022-01-19 14:21:25,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:25,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:25,430 INFO L254 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] [2022-01-19 14:21:25,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 14:21:25,430 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 602522999, now seen corresponding path program 5 times [2022-01-19 14:21:25,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:25,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119043517] [2022-01-19 14:21:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:25,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:21:25,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:25,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119043517] [2022-01-19 14:21:25,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119043517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:25,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:25,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:21:25,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111705228] [2022-01-19 14:21:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:25,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:21:25,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:21:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:21:25,620 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-01-19 14:21:25,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 385 transitions, 3236 flow. Second operand has 9 states, 9 states have (on average 182.55555555555554) internal successors, (1643), 9 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:25,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:25,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-01-19 14:21:25,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:33,078 INFO L129 PetriNetUnfolder]: 27313/56914 cut-off events. [2022-01-19 14:21:33,078 INFO L130 PetriNetUnfolder]: For 273398/274274 co-relation queries the response was YES. [2022-01-19 14:21:33,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212274 conditions, 56914 events. 27313/56914 cut-off events. For 273398/274274 co-relation queries the response was YES. Maximal size of possible extension queue 2708. Compared 637748 event pairs, 5089 based on Foata normal form. 517/55267 useless extension candidates. Maximal degree in co-relation 212230. Up to 13954 conditions per place. [2022-01-19 14:21:33,749 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 211 selfloop transitions, 260 changer transitions 12/650 dead transitions. [2022-01-19 14:21:33,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 650 transitions, 7205 flow [2022-01-19 14:21:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 14:21:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 14:21:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2493 transitions. [2022-01-19 14:21:33,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8374202216996977 [2022-01-19 14:21:33,755 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2493 transitions. [2022-01-19 14:21:33,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2493 transitions. [2022-01-19 14:21:33,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:33,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2493 transitions. [2022-01-19 14:21:33,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 191.76923076923077) internal successors, (2493), 13 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:33,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:33,762 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:33,762 INFO L186 Difference]: Start difference. First operand has 279 places, 385 transitions, 3236 flow. Second operand 13 states and 2493 transitions. [2022-01-19 14:21:33,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 650 transitions, 7205 flow [2022-01-19 14:21:37,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 650 transitions, 7189 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-01-19 14:21:37,403 INFO L242 Difference]: Finished difference. Result has 300 places, 520 transitions, 6232 flow [2022-01-19 14:21:37,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6232, PETRI_PLACES=300, PETRI_TRANSITIONS=520} [2022-01-19 14:21:37,403 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 93 predicate places. [2022-01-19 14:21:37,404 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 520 transitions, 6232 flow [2022-01-19 14:21:37,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 182.55555555555554) internal successors, (1643), 9 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:37,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:21:37,404 INFO L254 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] [2022-01-19 14:21:37,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 14:21:37,404 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:21:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:21:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 676680977, now seen corresponding path program 6 times [2022-01-19 14:21:37,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:21:37,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532224429] [2022-01-19 14:21:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:21:37,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:21:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:21:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:21:37,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:21:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532224429] [2022-01-19 14:21:37,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532224429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:21:37,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:21:37,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:21:37,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238345935] [2022-01-19 14:21:37,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:21:37,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:21:37,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:21:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:21:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:21:37,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:21:37,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 520 transitions, 6232 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:37,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:21:37,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:21:37,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:21:48,706 INFO L129 PetriNetUnfolder]: 35426/75503 cut-off events. [2022-01-19 14:21:48,706 INFO L130 PetriNetUnfolder]: For 509651/512813 co-relation queries the response was YES. [2022-01-19 14:21:49,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307952 conditions, 75503 events. 35426/75503 cut-off events. For 509651/512813 co-relation queries the response was YES. Maximal size of possible extension queue 3393. Compared 894010 event pairs, 7687 based on Foata normal form. 595/72404 useless extension candidates. Maximal degree in co-relation 307898. Up to 21853 conditions per place. [2022-01-19 14:21:49,909 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 202 selfloop transitions, 362 changer transitions 49/787 dead transitions. [2022-01-19 14:21:49,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 787 transitions, 11218 flow [2022-01-19 14:21:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:21:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:21:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2163 transitions. [2022-01-19 14:21:49,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8586740770146883 [2022-01-19 14:21:49,913 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2163 transitions. [2022-01-19 14:21:49,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2163 transitions. [2022-01-19 14:21:49,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:21:49,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2163 transitions. [2022-01-19 14:21:49,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.63636363636363) internal successors, (2163), 11 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:49,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:49,919 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:21:49,919 INFO L186 Difference]: Start difference. First operand has 300 places, 520 transitions, 6232 flow. Second operand 11 states and 2163 transitions. [2022-01-19 14:21:49,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 787 transitions, 11218 flow [2022-01-19 14:22:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 787 transitions, 10970 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-01-19 14:22:01,630 INFO L242 Difference]: Finished difference. Result has 315 places, 651 transitions, 9675 flow [2022-01-19 14:22:01,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9675, PETRI_PLACES=315, PETRI_TRANSITIONS=651} [2022-01-19 14:22:01,631 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 108 predicate places. [2022-01-19 14:22:01,631 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 651 transitions, 9675 flow [2022-01-19 14:22:01,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:01,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:22:01,631 INFO L254 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] [2022-01-19 14:22:01,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 14:22:01,631 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:22:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:22:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash -597986911, now seen corresponding path program 7 times [2022-01-19 14:22:01,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:22:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860636928] [2022-01-19 14:22:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:22:01,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:22:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:22:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:22:01,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:22:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860636928] [2022-01-19 14:22:01,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860636928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:22:01,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:22:01,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 14:22:01,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672868607] [2022-01-19 14:22:01,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:22:01,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 14:22:01,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:22:01,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 14:22:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-19 14:22:01,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:22:01,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 651 transitions, 9675 flow. Second operand has 10 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:01,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:22:01,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:22:01,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:22:11,429 INFO L129 PetriNetUnfolder]: 25121/56828 cut-off events. [2022-01-19 14:22:11,430 INFO L130 PetriNetUnfolder]: For 407022/408508 co-relation queries the response was YES. [2022-01-19 14:22:12,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245570 conditions, 56828 events. 25121/56828 cut-off events. For 407022/408508 co-relation queries the response was YES. Maximal size of possible extension queue 2498. Compared 667594 event pairs, 6666 based on Foata normal form. 794/55615 useless extension candidates. Maximal degree in co-relation 245509. Up to 18104 conditions per place. [2022-01-19 14:22:12,226 INFO L132 encePairwiseOnDemand]: 220/229 looper letters, 201 selfloop transitions, 372 changer transitions 49/796 dead transitions. [2022-01-19 14:22:12,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 796 transitions, 13450 flow [2022-01-19 14:22:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 14:22:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 14:22:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1558 transitions. [2022-01-19 14:22:12,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8504366812227074 [2022-01-19 14:22:12,228 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1558 transitions. [2022-01-19 14:22:12,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1558 transitions. [2022-01-19 14:22:12,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:22:12,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1558 transitions. [2022-01-19 14:22:12,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 194.75) internal successors, (1558), 8 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:12,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:12,232 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:12,232 INFO L186 Difference]: Start difference. First operand has 315 places, 651 transitions, 9675 flow. Second operand 8 states and 1558 transitions. [2022-01-19 14:22:12,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 796 transitions, 13450 flow [2022-01-19 14:22:19,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 796 transitions, 13123 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-01-19 14:22:19,238 INFO L242 Difference]: Finished difference. Result has 323 places, 700 transitions, 11595 flow [2022-01-19 14:22:19,239 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=9436, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11595, PETRI_PLACES=323, PETRI_TRANSITIONS=700} [2022-01-19 14:22:19,239 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 116 predicate places. [2022-01-19 14:22:19,239 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 700 transitions, 11595 flow [2022-01-19 14:22:19,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:19,240 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:22:19,240 INFO L254 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] [2022-01-19 14:22:19,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 14:22:19,240 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:22:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:22:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1046237929, now seen corresponding path program 8 times [2022-01-19 14:22:19,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:22:19,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869567781] [2022-01-19 14:22:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:22:19,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:22:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:22:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:22:19,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:22:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869567781] [2022-01-19 14:22:19,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869567781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:22:19,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:22:19,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 14:22:19,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538782188] [2022-01-19 14:22:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:22:19,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 14:22:19,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:22:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 14:22:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 14:22:19,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-01-19 14:22:19,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 700 transitions, 11595 flow. Second operand has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:19,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:22:19,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-01-19 14:22:19,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:22:31,517 INFO L129 PetriNetUnfolder]: 32589/71415 cut-off events. [2022-01-19 14:22:31,517 INFO L130 PetriNetUnfolder]: For 564314/567361 co-relation queries the response was YES. [2022-01-19 14:22:32,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307673 conditions, 71415 events. 32589/71415 cut-off events. For 564314/567361 co-relation queries the response was YES. Maximal size of possible extension queue 3114. Compared 853237 event pairs, 8219 based on Foata normal form. 524/69027 useless extension candidates. Maximal degree in co-relation 307608. Up to 17915 conditions per place. [2022-01-19 14:22:32,773 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 173 selfloop transitions, 436 changer transitions 12/800 dead transitions. [2022-01-19 14:22:32,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 800 transitions, 13517 flow [2022-01-19 14:22:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 14:22:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 14:22:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2003 transitions. [2022-01-19 14:22:32,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8746724890829695 [2022-01-19 14:22:32,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2003 transitions. [2022-01-19 14:22:32,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2003 transitions. [2022-01-19 14:22:32,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:22:32,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2003 transitions. [2022-01-19 14:22:32,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 200.3) internal successors, (2003), 10 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:32,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:32,779 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:32,779 INFO L186 Difference]: Start difference. First operand has 323 places, 700 transitions, 11595 flow. Second operand 10 states and 2003 transitions. [2022-01-19 14:22:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 800 transitions, 13517 flow [2022-01-19 14:22:44,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 800 transitions, 13079 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 14:22:44,039 INFO L242 Difference]: Finished difference. Result has 335 places, 717 transitions, 12690 flow [2022-01-19 14:22:44,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=11157, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12690, PETRI_PLACES=335, PETRI_TRANSITIONS=717} [2022-01-19 14:22:44,040 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 128 predicate places. [2022-01-19 14:22:44,040 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 717 transitions, 12690 flow [2022-01-19 14:22:44,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:44,040 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:22:44,040 INFO L254 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] [2022-01-19 14:22:44,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 14:22:44,040 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:22:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:22:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash 886203133, now seen corresponding path program 9 times [2022-01-19 14:22:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:22:44,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690585305] [2022-01-19 14:22:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:22:44,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:22:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:22:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:22:44,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:22:44,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690585305] [2022-01-19 14:22:44,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690585305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:22:44,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:22:44,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:22:44,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136088508] [2022-01-19 14:22:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:22:44,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:22:44,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:22:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:22:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:22:44,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:22:44,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 717 transitions, 12690 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:22:44,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:22:44,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:22:44,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:22:58,748 INFO L129 PetriNetUnfolder]: 39095/82105 cut-off events. [2022-01-19 14:22:58,748 INFO L130 PetriNetUnfolder]: For 812101/817103 co-relation queries the response was YES. [2022-01-19 14:22:59,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364559 conditions, 82105 events. 39095/82105 cut-off events. For 812101/817103 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 967967 event pairs, 8136 based on Foata normal form. 1428/80342 useless extension candidates. Maximal degree in co-relation 364488. Up to 18834 conditions per place. [2022-01-19 14:23:00,270 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 247 selfloop transitions, 414 changer transitions 30/866 dead transitions. [2022-01-19 14:23:00,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 866 transitions, 14642 flow [2022-01-19 14:23:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 14:23:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 14:23:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2358 transitions. [2022-01-19 14:23:00,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8580786026200873 [2022-01-19 14:23:00,272 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2358 transitions. [2022-01-19 14:23:00,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2358 transitions. [2022-01-19 14:23:00,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:23:00,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2358 transitions. [2022-01-19 14:23:00,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.5) internal successors, (2358), 12 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:00,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:00,278 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:00,278 INFO L186 Difference]: Start difference. First operand has 335 places, 717 transitions, 12690 flow. Second operand 12 states and 2358 transitions. [2022-01-19 14:23:00,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 866 transitions, 14642 flow [2022-01-19 14:23:15,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 866 transitions, 14107 flow, removed 35 selfloop flow, removed 3 redundant places. [2022-01-19 14:23:15,279 INFO L242 Difference]: Finished difference. Result has 350 places, 727 transitions, 12759 flow [2022-01-19 14:23:15,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=10709, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12759, PETRI_PLACES=350, PETRI_TRANSITIONS=727} [2022-01-19 14:23:15,281 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 143 predicate places. [2022-01-19 14:23:15,281 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 727 transitions, 12759 flow [2022-01-19 14:23:15,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:15,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:23:15,281 INFO L254 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] [2022-01-19 14:23:15,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 14:23:15,282 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:23:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:23:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1531003059, now seen corresponding path program 10 times [2022-01-19 14:23:15,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:23:15,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581761790] [2022-01-19 14:23:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:23:15,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:23:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:23:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:23:15,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:23:15,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581761790] [2022-01-19 14:23:15,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581761790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:23:15,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:23:15,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:23:15,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638824213] [2022-01-19 14:23:15,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:23:15,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:23:15,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:23:15,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:23:15,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:23:15,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-01-19 14:23:15,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 727 transitions, 12759 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:15,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:23:15,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-01-19 14:23:15,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:23:27,202 INFO L129 PetriNetUnfolder]: 28254/62407 cut-off events. [2022-01-19 14:23:27,202 INFO L130 PetriNetUnfolder]: For 653330/656751 co-relation queries the response was YES. [2022-01-19 14:23:28,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 298320 conditions, 62407 events. 28254/62407 cut-off events. For 653330/656751 co-relation queries the response was YES. Maximal size of possible extension queue 2614. Compared 732112 event pairs, 8046 based on Foata normal form. 559/61035 useless extension candidates. Maximal degree in co-relation 298242. Up to 21066 conditions per place. [2022-01-19 14:23:28,366 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 241 selfloop transitions, 345 changer transitions 36/801 dead transitions. [2022-01-19 14:23:28,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 801 transitions, 14734 flow [2022-01-19 14:23:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 14:23:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 14:23:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1587 transitions. [2022-01-19 14:23:28,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8662663755458515 [2022-01-19 14:23:28,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1587 transitions. [2022-01-19 14:23:28,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1587 transitions. [2022-01-19 14:23:28,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:23:28,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1587 transitions. [2022-01-19 14:23:28,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:28,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:28,371 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:28,371 INFO L186 Difference]: Start difference. First operand has 350 places, 727 transitions, 12759 flow. Second operand 8 states and 1587 transitions. [2022-01-19 14:23:28,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 801 transitions, 14734 flow [2022-01-19 14:23:37,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 801 transitions, 14474 flow, removed 36 selfloop flow, removed 2 redundant places. [2022-01-19 14:23:37,919 INFO L242 Difference]: Finished difference. Result has 357 places, 724 transitions, 13179 flow [2022-01-19 14:23:37,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=12468, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13179, PETRI_PLACES=357, PETRI_TRANSITIONS=724} [2022-01-19 14:23:37,920 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 150 predicate places. [2022-01-19 14:23:37,922 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 724 transitions, 13179 flow [2022-01-19 14:23:37,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:37,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:23:37,923 INFO L254 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] [2022-01-19 14:23:37,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 14:23:37,923 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:23:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:23:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash -804422253, now seen corresponding path program 11 times [2022-01-19 14:23:37,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:23:37,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149535065] [2022-01-19 14:23:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:23:37,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:23:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:23:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:23:38,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:23:38,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149535065] [2022-01-19 14:23:38,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149535065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:23:38,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:23:38,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:23:38,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955853451] [2022-01-19 14:23:38,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:23:38,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:23:38,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:23:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:23:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:23:38,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:23:38,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 724 transitions, 13179 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:38,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:23:38,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:23:38,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:23:53,157 INFO L129 PetriNetUnfolder]: 37317/79097 cut-off events. [2022-01-19 14:23:53,158 INFO L130 PetriNetUnfolder]: For 830811/833621 co-relation queries the response was YES. [2022-01-19 14:23:54,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366892 conditions, 79097 events. 37317/79097 cut-off events. For 830811/833621 co-relation queries the response was YES. Maximal size of possible extension queue 3346. Compared 934859 event pairs, 9900 based on Foata normal form. 330/76458 useless extension candidates. Maximal degree in co-relation 366811. Up to 25142 conditions per place. [2022-01-19 14:23:54,819 INFO L132 encePairwiseOnDemand]: 220/229 looper letters, 226 selfloop transitions, 311 changer transitions 16/728 dead transitions. [2022-01-19 14:23:54,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 728 transitions, 13284 flow [2022-01-19 14:23:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 14:23:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 14:23:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1380 transitions. [2022-01-19 14:23:54,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.860885839051778 [2022-01-19 14:23:54,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1380 transitions. [2022-01-19 14:23:54,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1380 transitions. [2022-01-19 14:23:54,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:23:54,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1380 transitions. [2022-01-19 14:23:54,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.14285714285714) internal successors, (1380), 7 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:54,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:54,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:23:54,824 INFO L186 Difference]: Start difference. First operand has 357 places, 724 transitions, 13179 flow. Second operand 7 states and 1380 transitions. [2022-01-19 14:23:54,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 728 transitions, 13284 flow [2022-01-19 14:24:10,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 728 transitions, 12839 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-01-19 14:24:10,880 INFO L242 Difference]: Finished difference. Result has 358 places, 683 transitions, 12143 flow [2022-01-19 14:24:10,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=11426, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12143, PETRI_PLACES=358, PETRI_TRANSITIONS=683} [2022-01-19 14:24:10,881 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 151 predicate places. [2022-01-19 14:24:10,881 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 683 transitions, 12143 flow [2022-01-19 14:24:10,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:10,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:24:10,882 INFO L254 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] [2022-01-19 14:24:10,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 14:24:10,882 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:24:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:24:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 272469073, now seen corresponding path program 12 times [2022-01-19 14:24:10,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:24:10,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734004949] [2022-01-19 14:24:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:24:10,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:24:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:24:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:24:11,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:24:11,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734004949] [2022-01-19 14:24:11,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734004949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:24:11,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:24:11,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:24:11,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633817205] [2022-01-19 14:24:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:24:11,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:24:11,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:24:11,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:24:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:24:11,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-01-19 14:24:11,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 683 transitions, 12143 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:11,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:24:11,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-01-19 14:24:11,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:24:21,751 INFO L129 PetriNetUnfolder]: 26062/55703 cut-off events. [2022-01-19 14:24:21,752 INFO L130 PetriNetUnfolder]: For 497044/499839 co-relation queries the response was YES. [2022-01-19 14:24:22,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260088 conditions, 55703 events. 26062/55703 cut-off events. For 497044/499839 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 626944 event pairs, 5827 based on Foata normal form. 329/54502 useless extension candidates. Maximal degree in co-relation 260006. Up to 18517 conditions per place. [2022-01-19 14:24:22,994 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 338 selfloop transitions, 323 changer transitions 36/876 dead transitions. [2022-01-19 14:24:22,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 876 transitions, 15335 flow [2022-01-19 14:24:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:24:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:24:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2194 transitions. [2022-01-19 14:24:22,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8709805478364431 [2022-01-19 14:24:22,995 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2194 transitions. [2022-01-19 14:24:22,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2194 transitions. [2022-01-19 14:24:22,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:24:22,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2194 transitions. [2022-01-19 14:24:22,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 199.45454545454547) internal successors, (2194), 11 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:22,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:22,999 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:22,999 INFO L186 Difference]: Start difference. First operand has 358 places, 683 transitions, 12143 flow. Second operand 11 states and 2194 transitions. [2022-01-19 14:24:22,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 876 transitions, 15335 flow [2022-01-19 14:24:27,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 876 transitions, 14754 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-01-19 14:24:27,859 INFO L242 Difference]: Finished difference. Result has 367 places, 687 transitions, 12290 flow [2022-01-19 14:24:27,859 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=11146, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12290, PETRI_PLACES=367, PETRI_TRANSITIONS=687} [2022-01-19 14:24:27,859 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 160 predicate places. [2022-01-19 14:24:27,859 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 687 transitions, 12290 flow [2022-01-19 14:24:27,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:27,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:24:27,860 INFO L254 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] [2022-01-19 14:24:27,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 14:24:27,860 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:24:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:24:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1533159283, now seen corresponding path program 13 times [2022-01-19 14:24:27,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:24:27,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902874247] [2022-01-19 14:24:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:24:27,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:24:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:24:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:24:28,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:24:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902874247] [2022-01-19 14:24:28,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902874247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:24:28,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:24:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:24:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638624878] [2022-01-19 14:24:28,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:24:28,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:24:28,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:24:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:24:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:24:28,037 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:24:28,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 687 transitions, 12290 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:28,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:24:28,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:24:28,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:24:40,035 INFO L129 PetriNetUnfolder]: 29375/62907 cut-off events. [2022-01-19 14:24:40,035 INFO L130 PetriNetUnfolder]: For 668123/670573 co-relation queries the response was YES. [2022-01-19 14:24:41,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 314816 conditions, 62907 events. 29375/62907 cut-off events. For 668123/670573 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 721184 event pairs, 8179 based on Foata normal form. 688/61595 useless extension candidates. Maximal degree in co-relation 314731. Up to 22241 conditions per place. [2022-01-19 14:24:41,344 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 388 selfloop transitions, 497 changer transitions 9/1076 dead transitions. [2022-01-19 14:24:41,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 1076 transitions, 20954 flow [2022-01-19 14:24:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 14:24:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 14:24:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2531 transitions. [2022-01-19 14:24:41,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501847497480686 [2022-01-19 14:24:41,347 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2531 transitions. [2022-01-19 14:24:41,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2531 transitions. [2022-01-19 14:24:41,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:24:41,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2531 transitions. [2022-01-19 14:24:41,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 194.69230769230768) internal successors, (2531), 13 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:41,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:41,510 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:41,510 INFO L186 Difference]: Start difference. First operand has 367 places, 687 transitions, 12290 flow. Second operand 13 states and 2531 transitions. [2022-01-19 14:24:41,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 1076 transitions, 20954 flow [2022-01-19 14:24:50,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1076 transitions, 20315 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-01-19 14:24:50,598 INFO L242 Difference]: Finished difference. Result has 378 places, 861 transitions, 17574 flow [2022-01-19 14:24:50,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=11864, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17574, PETRI_PLACES=378, PETRI_TRANSITIONS=861} [2022-01-19 14:24:50,599 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 171 predicate places. [2022-01-19 14:24:50,599 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 861 transitions, 17574 flow [2022-01-19 14:24:50,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:50,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:24:50,600 INFO L254 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] [2022-01-19 14:24:50,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 14:24:50,600 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:24:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:24:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash -305017773, now seen corresponding path program 14 times [2022-01-19 14:24:50,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:24:50,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237568507] [2022-01-19 14:24:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:24:50,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:24:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:24:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:24:50,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:24:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237568507] [2022-01-19 14:24:50,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237568507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:24:50,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:24:50,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:24:50,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575457697] [2022-01-19 14:24:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:24:50,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:24:50,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:24:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:24:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:24:50,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-01-19 14:24:50,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 861 transitions, 17574 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:24:50,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:24:50,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-01-19 14:24:50,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:25:05,531 INFO L129 PetriNetUnfolder]: 32060/69621 cut-off events. [2022-01-19 14:25:05,531 INFO L130 PetriNetUnfolder]: For 778350/783084 co-relation queries the response was YES. [2022-01-19 14:25:06,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359375 conditions, 69621 events. 32060/69621 cut-off events. For 778350/783084 co-relation queries the response was YES. Maximal size of possible extension queue 2908. Compared 813541 event pairs, 9552 based on Foata normal form. 373/67821 useless extension candidates. Maximal degree in co-relation 359285. Up to 23252 conditions per place. [2022-01-19 14:25:07,118 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 346 selfloop transitions, 455 changer transitions 23/1003 dead transitions. [2022-01-19 14:25:07,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1003 transitions, 20638 flow [2022-01-19 14:25:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:25:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:25:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2188 transitions. [2022-01-19 14:25:07,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.868598650258039 [2022-01-19 14:25:07,120 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2188 transitions. [2022-01-19 14:25:07,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2188 transitions. [2022-01-19 14:25:07,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:25:07,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2188 transitions. [2022-01-19 14:25:07,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 198.9090909090909) internal successors, (2188), 11 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:07,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:07,124 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:07,124 INFO L186 Difference]: Start difference. First operand has 378 places, 861 transitions, 17574 flow. Second operand 11 states and 2188 transitions. [2022-01-19 14:25:07,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1003 transitions, 20638 flow [2022-01-19 14:25:20,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 1003 transitions, 20322 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-01-19 14:25:20,233 INFO L242 Difference]: Finished difference. Result has 390 places, 870 transitions, 18647 flow [2022-01-19 14:25:20,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=17273, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18647, PETRI_PLACES=390, PETRI_TRANSITIONS=870} [2022-01-19 14:25:20,235 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 183 predicate places. [2022-01-19 14:25:20,235 INFO L470 AbstractCegarLoop]: Abstraction has has 390 places, 870 transitions, 18647 flow [2022-01-19 14:25:20,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:20,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:25:20,235 INFO L254 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] [2022-01-19 14:25:20,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 14:25:20,235 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:25:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:25:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -720344227, now seen corresponding path program 15 times [2022-01-19 14:25:20,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:25:20,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294388845] [2022-01-19 14:25:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:25:20,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:25:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:25:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:25:20,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:25:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294388845] [2022-01-19 14:25:20,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294388845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:25:20,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:25:20,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:25:20,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400328126] [2022-01-19 14:25:20,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:25:20,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:25:20,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:25:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:25:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:25:20,416 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:25:20,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 870 transitions, 18647 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:20,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:25:20,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:25:20,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:25:37,514 INFO L129 PetriNetUnfolder]: 34479/75002 cut-off events. [2022-01-19 14:25:37,515 INFO L130 PetriNetUnfolder]: For 887086/890531 co-relation queries the response was YES. [2022-01-19 14:25:39,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392474 conditions, 75002 events. 34479/75002 cut-off events. For 887086/890531 co-relation queries the response was YES. Maximal size of possible extension queue 3331. Compared 892634 event pairs, 10380 based on Foata normal form. 314/72391 useless extension candidates. Maximal degree in co-relation 392379. Up to 24941 conditions per place. [2022-01-19 14:25:39,669 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 434 selfloop transitions, 685 changer transitions 21/1326 dead transitions. [2022-01-19 14:25:39,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1326 transitions, 30736 flow [2022-01-19 14:25:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 14:25:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 14:25:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2536 transitions. [2022-01-19 14:25:39,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8518642929123278 [2022-01-19 14:25:39,671 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2536 transitions. [2022-01-19 14:25:39,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2536 transitions. [2022-01-19 14:25:39,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:25:39,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2536 transitions. [2022-01-19 14:25:39,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.07692307692307) internal successors, (2536), 13 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:39,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:39,676 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:39,676 INFO L186 Difference]: Start difference. First operand has 390 places, 870 transitions, 18647 flow. Second operand 13 states and 2536 transitions. [2022-01-19 14:25:39,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1326 transitions, 30736 flow [2022-01-19 14:25:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 1326 transitions, 29575 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-01-19 14:25:55,288 INFO L242 Difference]: Finished difference. Result has 405 places, 1096 transitions, 26852 flow [2022-01-19 14:25:55,290 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=17903, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26852, PETRI_PLACES=405, PETRI_TRANSITIONS=1096} [2022-01-19 14:25:55,291 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 198 predicate places. [2022-01-19 14:25:55,291 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 1096 transitions, 26852 flow [2022-01-19 14:25:55,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:55,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:25:55,292 INFO L254 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] [2022-01-19 14:25:55,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 14:25:55,292 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:25:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:25:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1839716487, now seen corresponding path program 16 times [2022-01-19 14:25:55,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:25:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228954624] [2022-01-19 14:25:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:25:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:25:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:25:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:25:55,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:25:55,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228954624] [2022-01-19 14:25:55,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228954624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:25:55,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:25:55,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 14:25:55,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670168799] [2022-01-19 14:25:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:25:55,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 14:25:55,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:25:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 14:25:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 14:25:55,469 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-01-19 14:25:55,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 1096 transitions, 26852 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:25:55,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:25:55,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-01-19 14:25:55,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:26:20,315 INFO L129 PetriNetUnfolder]: 44857/96729 cut-off events. [2022-01-19 14:26:20,316 INFO L130 PetriNetUnfolder]: For 1354829/1361693 co-relation queries the response was YES. [2022-01-19 14:26:22,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555881 conditions, 96729 events. 44857/96729 cut-off events. For 1354829/1361693 co-relation queries the response was YES. Maximal size of possible extension queue 4189. Compared 1171879 event pairs, 11761 based on Foata normal form. 1080/94914 useless extension candidates. Maximal degree in co-relation 555780. Up to 30939 conditions per place. [2022-01-19 14:26:23,192 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 470 selfloop transitions, 1028 changer transitions 4/1683 dead transitions. [2022-01-19 14:26:23,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 1683 transitions, 43017 flow [2022-01-19 14:26:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 14:26:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 14:26:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2385 transitions. [2022-01-19 14:26:23,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8679039301310044 [2022-01-19 14:26:23,194 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2385 transitions. [2022-01-19 14:26:23,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2385 transitions. [2022-01-19 14:26:23,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:26:23,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2385 transitions. [2022-01-19 14:26:23,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 198.75) internal successors, (2385), 12 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:26:23,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:26:23,198 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:26:23,198 INFO L186 Difference]: Start difference. First operand has 405 places, 1096 transitions, 26852 flow. Second operand 12 states and 2385 transitions. [2022-01-19 14:26:23,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 1683 transitions, 43017 flow [2022-01-19 14:26:59,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1683 transitions, 42447 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-01-19 14:26:59,066 INFO L242 Difference]: Finished difference. Result has 419 places, 1490 transitions, 40854 flow [2022-01-19 14:26:59,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=26509, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=636, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=40854, PETRI_PLACES=419, PETRI_TRANSITIONS=1490} [2022-01-19 14:26:59,068 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 212 predicate places. [2022-01-19 14:26:59,068 INFO L470 AbstractCegarLoop]: Abstraction has has 419 places, 1490 transitions, 40854 flow [2022-01-19 14:26:59,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:26:59,068 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:26:59,068 INFO L254 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] [2022-01-19 14:26:59,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 14:26:59,068 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 14:26:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:26:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash 372830655, now seen corresponding path program 17 times [2022-01-19 14:26:59,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:26:59,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486745915] [2022-01-19 14:26:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:26:59,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:26:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:26:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:26:59,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:26:59,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486745915] [2022-01-19 14:26:59,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486745915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:26:59,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:26:59,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:26:59,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049881817] [2022-01-19 14:26:59,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:26:59,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:26:59,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:26:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:26:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:26:59,252 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-01-19 14:26:59,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 1490 transitions, 40854 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:26:59,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:26:59,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-01-19 14:26:59,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand