/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/chl-sre-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:18:19,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:18:19,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:18:19,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:18:19,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:18:19,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:18:19,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:18:19,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:18:19,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:18:19,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:18:19,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:18:19,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:18:19,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:18:19,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:18:19,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:18:19,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:18:19,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:18:19,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:18:19,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:18:19,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:18:19,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:18:19,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:18:19,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:18:19,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:18:19,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:18:19,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:18:19,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:18:19,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:18:19,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:18:19,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:18:19,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:18:19,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:18:19,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:18:19,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:18:19,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:18:19,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:18:19,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:18:19,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:18:19,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:18:19,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:18:19,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:18:19,532 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 13:18:19,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:18:19,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:18:19,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:18:19,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:18:19,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:18:19,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:18:19,599 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:18:19,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:18:19,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:18:19,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:18:19,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:18:19,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:18:19,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:18:19,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:18:19,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:18:19,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:18:19,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:18:19,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:18:19,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:18:19,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:18:19,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:18:19,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:18:19,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:18:19,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:18:19,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:18:19,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:18:19,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:18:19,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:18:19,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:18:19,603 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:18:19,603 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:18:19,603 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:18:19,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:18:19,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:18:19,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:18:19,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:18:19,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:18:19,867 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:18:19,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2022-01-19 13:18:19,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fe34df75/89a102a51aa2418fb10969ce2508b770/FLAG0a485ee7d [2022-01-19 13:18:20,343 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:18:20,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2022-01-19 13:18:20,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fe34df75/89a102a51aa2418fb10969ce2508b770/FLAG0a485ee7d [2022-01-19 13:18:20,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fe34df75/89a102a51aa2418fb10969ce2508b770 [2022-01-19 13:18:20,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:18:20,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:18:20,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:18:20,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:18:20,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:18:20,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2d9d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20, skipping insertion in model container [2022-01-19 13:18:20,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:18:20,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:18:20,588 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/chl-sre-subst.wvr.c[2333,2346] [2022-01-19 13:18:20,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:18:20,596 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:18:20,613 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/chl-sre-subst.wvr.c[2333,2346] [2022-01-19 13:18:20,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:18:20,625 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:18:20,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20 WrapperNode [2022-01-19 13:18:20,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:18:20,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:18:20,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:18:20,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:18:20,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,652 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-01-19 13:18:20,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:18:20,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:18:20,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:18:20,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:18:20,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:18:20,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:18:20,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:18:20,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:18:20,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (1/1) ... [2022-01-19 13:18:20,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:18:20,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:18:20,700 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 13:18:20,713 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 13:18:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:18:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:18:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:18:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:18:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:18:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 13:18:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 13:18:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:18:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:18:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:18:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:18:20,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:18:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:18:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:18:20,742 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 13:18:20,829 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:18:20,830 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:18:21,090 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:18:21,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:18:21,097 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 13:18:21,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:18:21 BoogieIcfgContainer [2022-01-19 13:18:21,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:18:21,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:18:21,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:18:21,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:18:21,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:18:20" (1/3) ... [2022-01-19 13:18:21,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d920c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:18:21, skipping insertion in model container [2022-01-19 13:18:21,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:18:20" (2/3) ... [2022-01-19 13:18:21,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d920c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:18:21, skipping insertion in model container [2022-01-19 13:18:21,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:18:21" (3/3) ... [2022-01-19 13:18:21,115 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-01-19 13:18:21,119 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:18:21,119 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:18:21,119 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:18:21,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:18:21,225 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 13:18:21,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:18:21,291 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 13:18:21,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 13:18:21,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2022-01-19 13:18:21,367 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2022-01-19 13:18:21,368 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:18:21,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-01-19 13:18:21,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2022-01-19 13:18:21,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2022-01-19 13:18:21,397 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2022-01-19 13:18:21,398 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:18:21,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:21,398 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] [2022-01-19 13:18:21,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2022-01-19 13:18:21,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:21,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922389315] [2022-01-19 13:18:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:21,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:21,802 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 13:18:21,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:21,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922389315] [2022-01-19 13:18:21,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922389315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:21,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:21,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:18:21,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509705498] [2022-01-19 13:18:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:21,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:18:21,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:18:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:18:21,840 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2022-01-19 13:18:21,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 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 13:18:21,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:21,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2022-01-19 13:18:21,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:22,152 INFO L129 PetriNetUnfolder]: 133/471 cut-off events. [2022-01-19 13:18:22,153 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-01-19 13:18:22,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 471 events. 133/471 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2364 event pairs, 30 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 615. Up to 68 conditions per place. [2022-01-19 13:18:22,162 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2022-01-19 13:18:22,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2022-01-19 13:18:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:18:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:18:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2022-01-19 13:18:22,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2022-01-19 13:18:22,186 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2022-01-19 13:18:22,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2022-01-19 13:18:22,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:22,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2022-01-19 13:18:22,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 0 states have call successors, (0), 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 13:18:22,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:18:22,210 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:18:22,212 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2022-01-19 13:18:22,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2022-01-19 13:18:22,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:18:22,221 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2022-01-19 13:18:22,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-01-19 13:18:22,229 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2022-01-19 13:18:22,229 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2022-01-19 13:18:22,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 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 13:18:22,230 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:22,231 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] [2022-01-19 13:18:22,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:18:22,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1204171975, now seen corresponding path program 1 times [2022-01-19 13:18:22,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:22,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615894981] [2022-01-19 13:18:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:22,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:22,485 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 13:18:22,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:22,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615894981] [2022-01-19 13:18:22,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615894981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:22,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:22,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:22,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062805418] [2022-01-19 13:18:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:22,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:22,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:22,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:22,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:22,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:22,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:22,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:22,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:22,734 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 62#thread1ENTRYtrue, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 13:18:22,734 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2022-01-19 13:18:22,735 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 13:18:22,735 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 13:18:22,735 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 13:18:22,746 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 87#L42-2true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 13:18:22,746 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-01-19 13:18:22,746 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 13:18:22,747 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 13:18:22,747 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 13:18:22,750 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 79#L42true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 13:18:22,750 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-01-19 13:18:22,750 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 13:18:22,750 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 13:18:22,750 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 13:18:22,757 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 82#L42-5true, Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 13:18:22,758 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-01-19 13:18:22,758 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 13:18:22,758 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 13:18:22,758 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 13:18:22,761 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 10#L54-8true, 90#L42-3true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 13:18:22,761 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-01-19 13:18:22,761 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 13:18:22,762 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 13:18:22,762 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 13:18:22,855 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 10#L54-8true]) [2022-01-19 13:18:22,856 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2022-01-19 13:18:22,856 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 13:18:22,856 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 13:18:22,856 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 13:18:22,896 INFO L129 PetriNetUnfolder]: 498/2327 cut-off events. [2022-01-19 13:18:22,896 INFO L130 PetriNetUnfolder]: For 486/636 co-relation queries the response was YES. [2022-01-19 13:18:22,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4295 conditions, 2327 events. 498/2327 cut-off events. For 486/636 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21774 event pairs, 123 based on Foata normal form. 36/2071 useless extension candidates. Maximal degree in co-relation 4265. Up to 331 conditions per place. [2022-01-19 13:18:22,922 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2022-01-19 13:18:22,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 531 flow [2022-01-19 13:18:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-01-19 13:18:22,924 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-01-19 13:18:22,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-01-19 13:18:22,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-01-19 13:18:22,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:22,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-01-19 13:18:22,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 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 13:18:22,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:22,928 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:22,928 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 5 states and 551 transitions. [2022-01-19 13:18:22,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 531 flow [2022-01-19 13:18:22,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 155 transitions, 527 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 13:18:22,947 INFO L242 Difference]: Finished difference. Result has 124 places, 127 transitions, 397 flow [2022-01-19 13:18:22,947 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2022-01-19 13:18:22,948 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2022-01-19 13:18:22,948 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 397 flow [2022-01-19 13:18:22,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:22,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:22,949 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] [2022-01-19 13:18:22,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:18:22,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:22,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1498378015, now seen corresponding path program 2 times [2022-01-19 13:18:22,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:22,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442808014] [2022-01-19 13:18:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:22,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:23,137 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 13:18:23,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:23,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442808014] [2022-01-19 13:18:23,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442808014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:23,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:23,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:23,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043786268] [2022-01-19 13:18:23,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:23,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:23,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:23,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:23,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:23,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:23,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:23,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:23,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:23,490 INFO L129 PetriNetUnfolder]: 573/2563 cut-off events. [2022-01-19 13:18:23,491 INFO L130 PetriNetUnfolder]: For 1015/1145 co-relation queries the response was YES. [2022-01-19 13:18:23,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 2563 events. 573/2563 cut-off events. For 1015/1145 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23934 event pairs, 122 based on Foata normal form. 56/2500 useless extension candidates. Maximal degree in co-relation 4382. Up to 318 conditions per place. [2022-01-19 13:18:23,518 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 61 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2022-01-19 13:18:23,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 178 transitions, 780 flow [2022-01-19 13:18:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-01-19 13:18:23,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2022-01-19 13:18:23,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-01-19 13:18:23,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-01-19 13:18:23,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:23,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-01-19 13:18:23,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 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 13:18:23,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:23,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:23,525 INFO L186 Difference]: Start difference. First operand has 124 places, 127 transitions, 397 flow. Second operand 5 states and 556 transitions. [2022-01-19 13:18:23,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 178 transitions, 780 flow [2022-01-19 13:18:23,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 178 transitions, 780 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:23,546 INFO L242 Difference]: Finished difference. Result has 132 places, 145 transitions, 605 flow [2022-01-19 13:18:23,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=605, PETRI_PLACES=132, PETRI_TRANSITIONS=145} [2022-01-19 13:18:23,548 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 20 predicate places. [2022-01-19 13:18:23,548 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 145 transitions, 605 flow [2022-01-19 13:18:23,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:23,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:23,549 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] [2022-01-19 13:18:23,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:18:23,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:23,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash -613223827, now seen corresponding path program 1 times [2022-01-19 13:18:23,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:23,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220280985] [2022-01-19 13:18:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:23,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:23,713 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 13:18:23,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:23,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220280985] [2022-01-19 13:18:23,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220280985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:23,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:23,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:23,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529113613] [2022-01-19 13:18:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:23,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:23,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:23,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:23,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 145 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:23,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:23,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:23,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:24,322 INFO L129 PetriNetUnfolder]: 687/3225 cut-off events. [2022-01-19 13:18:24,323 INFO L130 PetriNetUnfolder]: For 3036/3173 co-relation queries the response was YES. [2022-01-19 13:18:24,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 3225 events. 687/3225 cut-off events. For 3036/3173 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31981 event pairs, 123 based on Foata normal form. 69/3145 useless extension candidates. Maximal degree in co-relation 6118. Up to 349 conditions per place. [2022-01-19 13:18:24,350 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 111 selfloop transitions, 40 changer transitions 9/252 dead transitions. [2022-01-19 13:18:24,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 252 transitions, 1598 flow [2022-01-19 13:18:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-01-19 13:18:24,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-01-19 13:18:24,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-01-19 13:18:24,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-01-19 13:18:24,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:24,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-01-19 13:18:24,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 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 13:18:24,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:24,357 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:24,357 INFO L186 Difference]: Start difference. First operand has 132 places, 145 transitions, 605 flow. Second operand 7 states and 772 transitions. [2022-01-19 13:18:24,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 252 transitions, 1598 flow [2022-01-19 13:18:24,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 252 transitions, 1598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:24,374 INFO L242 Difference]: Finished difference. Result has 144 places, 180 transitions, 1093 flow [2022-01-19 13:18:24,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=144, PETRI_TRANSITIONS=180} [2022-01-19 13:18:24,375 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 32 predicate places. [2022-01-19 13:18:24,375 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 180 transitions, 1093 flow [2022-01-19 13:18:24,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:24,376 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:24,376 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] [2022-01-19 13:18:24,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:18:24,376 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -148648603, now seen corresponding path program 1 times [2022-01-19 13:18:24,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:24,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034177812] [2022-01-19 13:18:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:24,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:24,564 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 13:18:24,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:24,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034177812] [2022-01-19 13:18:24,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034177812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:24,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:24,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:24,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985842931] [2022-01-19 13:18:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:24,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:24,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:24,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:24,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 180 transitions, 1093 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:24,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:24,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:24,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:25,124 INFO L129 PetriNetUnfolder]: 636/3554 cut-off events. [2022-01-19 13:18:25,125 INFO L130 PetriNetUnfolder]: For 5898/6021 co-relation queries the response was YES. [2022-01-19 13:18:25,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 3554 events. 636/3554 cut-off events. For 5898/6021 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36941 event pairs, 125 based on Foata normal form. 72/3466 useless extension candidates. Maximal degree in co-relation 7511. Up to 334 conditions per place. [2022-01-19 13:18:25,164 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 116 selfloop transitions, 65 changer transitions 9/282 dead transitions. [2022-01-19 13:18:25,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 282 transitions, 2376 flow [2022-01-19 13:18:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-01-19 13:18:25,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-01-19 13:18:25,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-01-19 13:18:25,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-01-19 13:18:25,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:25,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-01-19 13:18:25,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 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 13:18:25,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:25,171 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:25,171 INFO L186 Difference]: Start difference. First operand has 144 places, 180 transitions, 1093 flow. Second operand 7 states and 772 transitions. [2022-01-19 13:18:25,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 282 transitions, 2376 flow [2022-01-19 13:18:25,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 282 transitions, 2368 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:25,235 INFO L242 Difference]: Finished difference. Result has 154 places, 220 transitions, 1867 flow [2022-01-19 13:18:25,236 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1867, PETRI_PLACES=154, PETRI_TRANSITIONS=220} [2022-01-19 13:18:25,236 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2022-01-19 13:18:25,236 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 220 transitions, 1867 flow [2022-01-19 13:18:25,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:25,237 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:25,237 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] [2022-01-19 13:18:25,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:18:25,237 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1601579601, now seen corresponding path program 3 times [2022-01-19 13:18:25,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:25,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842175959] [2022-01-19 13:18:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:25,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:25,383 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 13:18:25,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:25,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842175959] [2022-01-19 13:18:25,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842175959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:25,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:25,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:25,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833454655] [2022-01-19 13:18:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:25,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:25,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:25,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:25,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 220 transitions, 1867 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:25,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:25,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:25,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:25,989 INFO L129 PetriNetUnfolder]: 681/4157 cut-off events. [2022-01-19 13:18:25,989 INFO L130 PetriNetUnfolder]: For 8977/9112 co-relation queries the response was YES. [2022-01-19 13:18:26,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10400 conditions, 4157 events. 681/4157 cut-off events. For 8977/9112 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45547 event pairs, 168 based on Foata normal form. 54/4032 useless extension candidates. Maximal degree in co-relation 8936. Up to 429 conditions per place. [2022-01-19 13:18:26,029 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 155 selfloop transitions, 53 changer transitions 7/307 dead transitions. [2022-01-19 13:18:26,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 307 transitions, 3175 flow [2022-01-19 13:18:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 13:18:26,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 13:18:26,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 13:18:26,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 13:18:26,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:26,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 13:18:26,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 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 13:18:26,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:26,037 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:26,037 INFO L186 Difference]: Start difference. First operand has 154 places, 220 transitions, 1867 flow. Second operand 7 states and 769 transitions. [2022-01-19 13:18:26,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 307 transitions, 3175 flow [2022-01-19 13:18:26,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 307 transitions, 3141 flow, removed 17 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:26,066 INFO L242 Difference]: Finished difference. Result has 166 places, 242 transitions, 2381 flow [2022-01-19 13:18:26,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2381, PETRI_PLACES=166, PETRI_TRANSITIONS=242} [2022-01-19 13:18:26,067 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2022-01-19 13:18:26,068 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 242 transitions, 2381 flow [2022-01-19 13:18:26,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:26,068 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:26,068 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] [2022-01-19 13:18:26,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:18:26,069 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1952870271, now seen corresponding path program 1 times [2022-01-19 13:18:26,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:26,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605804405] [2022-01-19 13:18:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:26,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:26,247 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 13:18:26,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:26,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605804405] [2022-01-19 13:18:26,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605804405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:26,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:26,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:26,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049574149] [2022-01-19 13:18:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:26,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:26,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:26,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:26,250 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:26,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 242 transitions, 2381 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:26,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:26,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:26,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:26,943 INFO L129 PetriNetUnfolder]: 726/4918 cut-off events. [2022-01-19 13:18:26,943 INFO L130 PetriNetUnfolder]: For 12079/12261 co-relation queries the response was YES. [2022-01-19 13:18:26,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12376 conditions, 4918 events. 726/4918 cut-off events. For 12079/12261 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 56456 event pairs, 190 based on Foata normal form. 65/4775 useless extension candidates. Maximal degree in co-relation 10686. Up to 524 conditions per place. [2022-01-19 13:18:27,068 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 164 selfloop transitions, 72 changer transitions 6/334 dead transitions. [2022-01-19 13:18:27,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 334 transitions, 3957 flow [2022-01-19 13:18:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 13:18:27,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 13:18:27,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 13:18:27,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 13:18:27,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:27,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 13:18:27,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 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 13:18:27,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:27,077 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:27,077 INFO L186 Difference]: Start difference. First operand has 166 places, 242 transitions, 2381 flow. Second operand 7 states and 769 transitions. [2022-01-19 13:18:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 334 transitions, 3957 flow [2022-01-19 13:18:27,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 334 transitions, 3947 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:27,138 INFO L242 Difference]: Finished difference. Result has 178 places, 271 transitions, 3195 flow [2022-01-19 13:18:27,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3195, PETRI_PLACES=178, PETRI_TRANSITIONS=271} [2022-01-19 13:18:27,139 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 66 predicate places. [2022-01-19 13:18:27,139 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 271 transitions, 3195 flow [2022-01-19 13:18:27,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:27,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:27,140 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] [2022-01-19 13:18:27,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:18:27,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1617352099, now seen corresponding path program 4 times [2022-01-19 13:18:27,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:27,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418210780] [2022-01-19 13:18:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:27,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:27,232 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 13:18:27,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:27,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418210780] [2022-01-19 13:18:27,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418210780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:27,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:27,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:27,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188205007] [2022-01-19 13:18:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:27,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:27,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:27,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:27,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 271 transitions, 3195 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:27,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:27,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:27,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:27,985 INFO L129 PetriNetUnfolder]: 706/4745 cut-off events. [2022-01-19 13:18:27,986 INFO L130 PetriNetUnfolder]: For 15772/15950 co-relation queries the response was YES. [2022-01-19 13:18:28,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12741 conditions, 4745 events. 706/4745 cut-off events. For 15772/15950 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 54166 event pairs, 186 based on Foata normal form. 61/4598 useless extension candidates. Maximal degree in co-relation 11065. Up to 512 conditions per place. [2022-01-19 13:18:28,025 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 145 selfloop transitions, 67 changer transitions 16/320 dead transitions. [2022-01-19 13:18:28,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 320 transitions, 4223 flow [2022-01-19 13:18:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-01-19 13:18:28,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-01-19 13:18:28,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-01-19 13:18:28,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-01-19 13:18:28,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:28,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-01-19 13:18:28,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 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 13:18:28,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:28,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:28,031 INFO L186 Difference]: Start difference. First operand has 178 places, 271 transitions, 3195 flow. Second operand 5 states and 555 transitions. [2022-01-19 13:18:28,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 320 transitions, 4223 flow [2022-01-19 13:18:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 320 transitions, 4203 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:28,093 INFO L242 Difference]: Finished difference. Result has 185 places, 277 transitions, 3569 flow [2022-01-19 13:18:28,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3569, PETRI_PLACES=185, PETRI_TRANSITIONS=277} [2022-01-19 13:18:28,094 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 73 predicate places. [2022-01-19 13:18:28,094 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 277 transitions, 3569 flow [2022-01-19 13:18:28,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:28,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:28,095 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] [2022-01-19 13:18:28,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:18:28,095 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1485326517, now seen corresponding path program 2 times [2022-01-19 13:18:28,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:28,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582249755] [2022-01-19 13:18:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:28,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:28,160 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 13:18:28,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:28,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582249755] [2022-01-19 13:18:28,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582249755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:28,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:28,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:28,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265302213] [2022-01-19 13:18:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:28,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:28,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:28,163 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:28,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 277 transitions, 3569 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:28,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:28,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:28,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:28,708 INFO L129 PetriNetUnfolder]: 661/4490 cut-off events. [2022-01-19 13:18:28,709 INFO L130 PetriNetUnfolder]: For 18051/18207 co-relation queries the response was YES. [2022-01-19 13:18:28,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12338 conditions, 4490 events. 661/4490 cut-off events. For 18051/18207 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50698 event pairs, 165 based on Foata normal form. 62/4359 useless extension candidates. Maximal degree in co-relation 10657. Up to 478 conditions per place. [2022-01-19 13:18:28,755 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 163 selfloop transitions, 51 changer transitions 14/320 dead transitions. [2022-01-19 13:18:28,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 320 transitions, 4418 flow [2022-01-19 13:18:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-01-19 13:18:28,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-01-19 13:18:28,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-01-19 13:18:28,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-01-19 13:18:28,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:28,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-01-19 13:18:28,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 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 13:18:28,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:28,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:28,761 INFO L186 Difference]: Start difference. First operand has 185 places, 277 transitions, 3569 flow. Second operand 5 states and 555 transitions. [2022-01-19 13:18:28,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 320 transitions, 4418 flow [2022-01-19 13:18:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 320 transitions, 4395 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:28,845 INFO L242 Difference]: Finished difference. Result has 191 places, 278 transitions, 3710 flow [2022-01-19 13:18:28,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3710, PETRI_PLACES=191, PETRI_TRANSITIONS=278} [2022-01-19 13:18:28,847 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 79 predicate places. [2022-01-19 13:18:28,847 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 278 transitions, 3710 flow [2022-01-19 13:18:28,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:28,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:28,847 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] [2022-01-19 13:18:28,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 13:18:28,848 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1641429269, now seen corresponding path program 2 times [2022-01-19 13:18:28,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:28,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543972764] [2022-01-19 13:18:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:28,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:28,929 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 13:18:28,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543972764] [2022-01-19 13:18:28,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543972764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:28,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:28,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066332164] [2022-01-19 13:18:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:28,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:28,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:28,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 278 transitions, 3710 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:28,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:28,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:28,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:29,560 INFO L129 PetriNetUnfolder]: 726/4767 cut-off events. [2022-01-19 13:18:29,560 INFO L130 PetriNetUnfolder]: For 21113/21279 co-relation queries the response was YES. [2022-01-19 13:18:29,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 4767 events. 726/4767 cut-off events. For 21113/21279 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 54200 event pairs, 189 based on Foata normal form. 43/4594 useless extension candidates. Maximal degree in co-relation 11975. Up to 523 conditions per place. [2022-01-19 13:18:29,601 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 158 selfloop transitions, 104 changer transitions 5/359 dead transitions. [2022-01-19 13:18:29,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 359 transitions, 5455 flow [2022-01-19 13:18:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 13:18:29,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 13:18:29,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 13:18:29,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 13:18:29,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:29,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 13:18:29,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 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 13:18:29,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:29,608 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:29,608 INFO L186 Difference]: Start difference. First operand has 191 places, 278 transitions, 3710 flow. Second operand 7 states and 769 transitions. [2022-01-19 13:18:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 359 transitions, 5455 flow [2022-01-19 13:18:29,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 359 transitions, 5453 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:29,704 INFO L242 Difference]: Finished difference. Result has 202 places, 311 transitions, 4852 flow [2022-01-19 13:18:29,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4852, PETRI_PLACES=202, PETRI_TRANSITIONS=311} [2022-01-19 13:18:29,705 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 90 predicate places. [2022-01-19 13:18:29,706 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 311 transitions, 4852 flow [2022-01-19 13:18:29,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:29,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:29,706 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] [2022-01-19 13:18:29,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 13:18:29,706 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:29,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:29,707 INFO L85 PathProgramCache]: Analyzing trace with hash -519905703, now seen corresponding path program 2 times [2022-01-19 13:18:29,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818249857] [2022-01-19 13:18:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:29,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:29,803 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 13:18:29,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818249857] [2022-01-19 13:18:29,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818249857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:29,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:29,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:29,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221250356] [2022-01-19 13:18:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:29,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:29,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:29,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:29,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 311 transitions, 4852 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:29,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:29,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:29,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:30,469 INFO L129 PetriNetUnfolder]: 718/4919 cut-off events. [2022-01-19 13:18:30,470 INFO L130 PetriNetUnfolder]: For 25639/25816 co-relation queries the response was YES. [2022-01-19 13:18:30,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14454 conditions, 4919 events. 718/4919 cut-off events. For 25639/25816 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56844 event pairs, 214 based on Foata normal form. 48/4746 useless extension candidates. Maximal degree in co-relation 12434. Up to 532 conditions per place. [2022-01-19 13:18:30,519 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 188 selfloop transitions, 75 changer transitions 6/361 dead transitions. [2022-01-19 13:18:30,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 361 transitions, 5912 flow [2022-01-19 13:18:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-01-19 13:18:30,522 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-01-19 13:18:30,522 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-01-19 13:18:30,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-01-19 13:18:30,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:30,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-01-19 13:18:30,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 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 13:18:30,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:30,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:30,526 INFO L186 Difference]: Start difference. First operand has 202 places, 311 transitions, 4852 flow. Second operand 7 states and 763 transitions. [2022-01-19 13:18:30,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 361 transitions, 5912 flow [2022-01-19 13:18:30,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 361 transitions, 5848 flow, removed 32 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:30,640 INFO L242 Difference]: Finished difference. Result has 211 places, 317 transitions, 5119 flow [2022-01-19 13:18:30,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5119, PETRI_PLACES=211, PETRI_TRANSITIONS=317} [2022-01-19 13:18:30,641 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 99 predicate places. [2022-01-19 13:18:30,641 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 317 transitions, 5119 flow [2022-01-19 13:18:30,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:30,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:30,641 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] [2022-01-19 13:18:30,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 13:18:30,642 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash -878726137, now seen corresponding path program 3 times [2022-01-19 13:18:30,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:30,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31756685] [2022-01-19 13:18:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:30,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:30,769 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 13:18:30,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:30,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31756685] [2022-01-19 13:18:30,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31756685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:30,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:30,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:30,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266950651] [2022-01-19 13:18:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:30,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:30,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:30,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:30,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 317 transitions, 5119 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:30,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:30,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:30,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:31,599 INFO L129 PetriNetUnfolder]: 717/5058 cut-off events. [2022-01-19 13:18:31,600 INFO L130 PetriNetUnfolder]: For 26915/27078 co-relation queries the response was YES. [2022-01-19 13:18:31,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14919 conditions, 5058 events. 717/5058 cut-off events. For 26915/27078 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 59286 event pairs, 206 based on Foata normal form. 45/4886 useless extension candidates. Maximal degree in co-relation 12959. Up to 506 conditions per place. [2022-01-19 13:18:31,647 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 196 selfloop transitions, 86 changer transitions 9/383 dead transitions. [2022-01-19 13:18:31,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 383 transitions, 6537 flow [2022-01-19 13:18:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-01-19 13:18:31,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8847926267281107 [2022-01-19 13:18:31,650 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-01-19 13:18:31,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-01-19 13:18:31,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:31,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-01-19 13:18:31,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 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 13:18:31,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:31,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:31,655 INFO L186 Difference]: Start difference. First operand has 211 places, 317 transitions, 5119 flow. Second operand 7 states and 768 transitions. [2022-01-19 13:18:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 383 transitions, 6537 flow [2022-01-19 13:18:31,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 383 transitions, 6531 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:31,788 INFO L242 Difference]: Finished difference. Result has 221 places, 333 transitions, 5675 flow [2022-01-19 13:18:31,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5675, PETRI_PLACES=221, PETRI_TRANSITIONS=333} [2022-01-19 13:18:31,791 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 109 predicate places. [2022-01-19 13:18:31,791 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 333 transitions, 5675 flow [2022-01-19 13:18:31,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:31,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:31,791 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] [2022-01-19 13:18:31,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 13:18:31,792 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1431994733, now seen corresponding path program 4 times [2022-01-19 13:18:31,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:31,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976029906] [2022-01-19 13:18:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:31,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:31,874 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 13:18:31,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:31,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976029906] [2022-01-19 13:18:31,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976029906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:31,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:31,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:31,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834082615] [2022-01-19 13:18:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:31,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:31,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:31,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:31,877 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:31,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 333 transitions, 5675 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:31,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:31,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:31,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:32,621 INFO L129 PetriNetUnfolder]: 730/5408 cut-off events. [2022-01-19 13:18:32,621 INFO L130 PetriNetUnfolder]: For 29357/29536 co-relation queries the response was YES. [2022-01-19 13:18:32,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15871 conditions, 5408 events. 730/5408 cut-off events. For 29357/29536 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 64206 event pairs, 196 based on Foata normal form. 58/5226 useless extension candidates. Maximal degree in co-relation 13778. Up to 581 conditions per place. [2022-01-19 13:18:32,671 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 197 selfloop transitions, 75 changer transitions 2/366 dead transitions. [2022-01-19 13:18:32,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 366 transitions, 6647 flow [2022-01-19 13:18:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-01-19 13:18:32,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-01-19 13:18:32,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-01-19 13:18:32,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-01-19 13:18:32,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:32,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-01-19 13:18:32,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 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 13:18:32,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:32,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:32,676 INFO L186 Difference]: Start difference. First operand has 221 places, 333 transitions, 5675 flow. Second operand 5 states and 547 transitions. [2022-01-19 13:18:32,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 366 transitions, 6647 flow [2022-01-19 13:18:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 366 transitions, 6603 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:32,845 INFO L242 Difference]: Finished difference. Result has 229 places, 341 transitions, 6124 flow [2022-01-19 13:18:32,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5633, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6124, PETRI_PLACES=229, PETRI_TRANSITIONS=341} [2022-01-19 13:18:32,846 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 117 predicate places. [2022-01-19 13:18:32,846 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 341 transitions, 6124 flow [2022-01-19 13:18:32,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:32,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:32,846 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] [2022-01-19 13:18:32,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 13:18:32,846 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1486639325, now seen corresponding path program 5 times [2022-01-19 13:18:32,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:32,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652369441] [2022-01-19 13:18:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:32,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:32,933 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 13:18:32,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:32,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652369441] [2022-01-19 13:18:32,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652369441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:32,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:32,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:32,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942893679] [2022-01-19 13:18:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:32,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:32,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:32,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:32,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 341 transitions, 6124 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:32,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:32,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:32,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:33,753 INFO L129 PetriNetUnfolder]: 707/5270 cut-off events. [2022-01-19 13:18:33,753 INFO L130 PetriNetUnfolder]: For 33397/33542 co-relation queries the response was YES. [2022-01-19 13:18:33,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 5270 events. 707/5270 cut-off events. For 33397/33542 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62877 event pairs, 185 based on Foata normal form. 50/5105 useless extension candidates. Maximal degree in co-relation 14056. Up to 556 conditions per place. [2022-01-19 13:18:33,809 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 191 selfloop transitions, 94 changer transitions 6/383 dead transitions. [2022-01-19 13:18:33,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 383 transitions, 7166 flow [2022-01-19 13:18:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2022-01-19 13:18:33,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2022-01-19 13:18:33,812 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2022-01-19 13:18:33,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2022-01-19 13:18:33,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:33,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2022-01-19 13:18:33,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 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 13:18:33,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:33,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:33,816 INFO L186 Difference]: Start difference. First operand has 229 places, 341 transitions, 6124 flow. Second operand 7 states and 762 transitions. [2022-01-19 13:18:33,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 383 transitions, 7166 flow [2022-01-19 13:18:33,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 383 transitions, 7144 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:33,991 INFO L242 Difference]: Finished difference. Result has 238 places, 348 transitions, 6590 flow [2022-01-19 13:18:33,992 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6102, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6590, PETRI_PLACES=238, PETRI_TRANSITIONS=348} [2022-01-19 13:18:33,993 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 126 predicate places. [2022-01-19 13:18:33,993 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 348 transitions, 6590 flow [2022-01-19 13:18:33,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:33,993 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:33,993 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] [2022-01-19 13:18:33,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 13:18:33,994 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1099339847, now seen corresponding path program 3 times [2022-01-19 13:18:33,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:33,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816606814] [2022-01-19 13:18:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:33,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:34,072 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 13:18:34,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:34,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816606814] [2022-01-19 13:18:34,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816606814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:34,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:34,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:18:34,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553936821] [2022-01-19 13:18:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:34,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:18:34,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:34,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:18:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:18:34,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:34,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 348 transitions, 6590 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 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 13:18:34,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:34,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:34,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:34,896 INFO L129 PetriNetUnfolder]: 685/5239 cut-off events. [2022-01-19 13:18:34,896 INFO L130 PetriNetUnfolder]: For 35324/35534 co-relation queries the response was YES. [2022-01-19 13:18:34,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15595 conditions, 5239 events. 685/5239 cut-off events. For 35324/35534 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 62169 event pairs, 217 based on Foata normal form. 74/5074 useless extension candidates. Maximal degree in co-relation 13865. Up to 529 conditions per place. [2022-01-19 13:18:34,939 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 260 selfloop transitions, 41 changer transitions 12/405 dead transitions. [2022-01-19 13:18:34,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 405 transitions, 8268 flow [2022-01-19 13:18:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:18:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:18:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2022-01-19 13:18:34,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2022-01-19 13:18:34,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2022-01-19 13:18:34,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2022-01-19 13:18:34,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:34,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2022-01-19 13:18:34,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:34,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 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 13:18:34,944 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 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 13:18:34,944 INFO L186 Difference]: Start difference. First operand has 238 places, 348 transitions, 6590 flow. Second operand 4 states and 443 transitions. [2022-01-19 13:18:34,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 405 transitions, 8268 flow [2022-01-19 13:18:35,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 405 transitions, 8126 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-01-19 13:18:35,093 INFO L242 Difference]: Finished difference. Result has 241 places, 348 transitions, 6489 flow [2022-01-19 13:18:35,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6489, PETRI_PLACES=241, PETRI_TRANSITIONS=348} [2022-01-19 13:18:35,094 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 129 predicate places. [2022-01-19 13:18:35,094 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 348 transitions, 6489 flow [2022-01-19 13:18:35,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 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 13:18:35,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:35,094 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] [2022-01-19 13:18:35,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 13:18:35,094 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1429608049, now seen corresponding path program 5 times [2022-01-19 13:18:35,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:35,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692956866] [2022-01-19 13:18:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:35,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:35,158 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 13:18:35,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:35,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692956866] [2022-01-19 13:18:35,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692956866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:35,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:35,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:35,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439213100] [2022-01-19 13:18:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:35,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:35,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:35,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:35,160 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:35,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 348 transitions, 6489 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:35,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:35,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:35,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:36,036 INFO L129 PetriNetUnfolder]: 685/5344 cut-off events. [2022-01-19 13:18:36,037 INFO L130 PetriNetUnfolder]: For 33347/33515 co-relation queries the response was YES. [2022-01-19 13:18:36,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15768 conditions, 5344 events. 685/5344 cut-off events. For 33347/33515 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 64162 event pairs, 203 based on Foata normal form. 59/5191 useless extension candidates. Maximal degree in co-relation 14091. Up to 588 conditions per place. [2022-01-19 13:18:36,091 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 206 selfloop transitions, 75 changer transitions 1/374 dead transitions. [2022-01-19 13:18:36,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 374 transitions, 7321 flow [2022-01-19 13:18:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 13:18:36,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 13:18:36,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 13:18:36,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 13:18:36,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:36,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 13:18:36,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 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 13:18:36,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:36,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:36,097 INFO L186 Difference]: Start difference. First operand has 241 places, 348 transitions, 6489 flow. Second operand 5 states and 546 transitions. [2022-01-19 13:18:36,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 374 transitions, 7321 flow [2022-01-19 13:18:36,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 374 transitions, 7295 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:36,225 INFO L242 Difference]: Finished difference. Result has 246 places, 352 transitions, 6739 flow [2022-01-19 13:18:36,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6463, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6739, PETRI_PLACES=246, PETRI_TRANSITIONS=352} [2022-01-19 13:18:36,226 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 134 predicate places. [2022-01-19 13:18:36,226 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 352 transitions, 6739 flow [2022-01-19 13:18:36,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:36,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:36,227 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] [2022-01-19 13:18:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 13:18:36,227 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 24432091, now seen corresponding path program 6 times [2022-01-19 13:18:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:36,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001202096] [2022-01-19 13:18:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:36,299 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 13:18:36,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:36,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001202096] [2022-01-19 13:18:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001202096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:36,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:36,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:36,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702057033] [2022-01-19 13:18:36,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:36,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:36,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:36,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 352 transitions, 6739 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:36,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:36,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:36,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:37,155 INFO L129 PetriNetUnfolder]: 679/5351 cut-off events. [2022-01-19 13:18:37,155 INFO L130 PetriNetUnfolder]: For 35254/35448 co-relation queries the response was YES. [2022-01-19 13:18:37,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15888 conditions, 5351 events. 679/5351 cut-off events. For 35254/35448 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 64362 event pairs, 164 based on Foata normal form. 62/5201 useless extension candidates. Maximal degree in co-relation 14838. Up to 580 conditions per place. [2022-01-19 13:18:37,219 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 197 selfloop transitions, 97 changer transitions 5/391 dead transitions. [2022-01-19 13:18:37,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 391 transitions, 7739 flow [2022-01-19 13:18:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:18:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:18:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2022-01-19 13:18:37,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2022-01-19 13:18:37,222 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2022-01-19 13:18:37,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2022-01-19 13:18:37,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:37,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2022-01-19 13:18:37,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 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 13:18:37,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:37,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 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 13:18:37,226 INFO L186 Difference]: Start difference. First operand has 246 places, 352 transitions, 6739 flow. Second operand 7 states and 762 transitions. [2022-01-19 13:18:37,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 391 transitions, 7739 flow [2022-01-19 13:18:37,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 391 transitions, 7623 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 13:18:37,380 INFO L242 Difference]: Finished difference. Result has 255 places, 356 transitions, 7096 flow [2022-01-19 13:18:37,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6595, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7096, PETRI_PLACES=255, PETRI_TRANSITIONS=356} [2022-01-19 13:18:37,380 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 143 predicate places. [2022-01-19 13:18:37,380 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 356 transitions, 7096 flow [2022-01-19 13:18:37,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:37,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:37,381 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] [2022-01-19 13:18:37,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 13:18:37,381 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash -311761247, now seen corresponding path program 6 times [2022-01-19 13:18:37,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:37,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573565152] [2022-01-19 13:18:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:37,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:37,448 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 13:18:37,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573565152] [2022-01-19 13:18:37,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573565152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:37,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:37,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:37,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836906427] [2022-01-19 13:18:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:37,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:37,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:37,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:37,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 356 transitions, 7096 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:37,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:37,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:37,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:38,242 INFO L129 PetriNetUnfolder]: 648/5036 cut-off events. [2022-01-19 13:18:38,242 INFO L130 PetriNetUnfolder]: For 35835/36012 co-relation queries the response was YES. [2022-01-19 13:18:38,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15537 conditions, 5036 events. 648/5036 cut-off events. For 35835/36012 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 59419 event pairs, 148 based on Foata normal form. 58/4880 useless extension candidates. Maximal degree in co-relation 14602. Up to 539 conditions per place. [2022-01-19 13:18:38,276 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 197 selfloop transitions, 84 changer transitions 4/377 dead transitions. [2022-01-19 13:18:38,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 377 transitions, 7686 flow [2022-01-19 13:18:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 13:18:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 13:18:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2022-01-19 13:18:38,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2022-01-19 13:18:38,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2022-01-19 13:18:38,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2022-01-19 13:18:38,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:38,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2022-01-19 13:18:38,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 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 13:18:38,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:38,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:38,281 INFO L186 Difference]: Start difference. First operand has 255 places, 356 transitions, 7096 flow. Second operand 6 states and 661 transitions. [2022-01-19 13:18:38,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 377 transitions, 7686 flow [2022-01-19 13:18:38,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 377 transitions, 7566 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-01-19 13:18:38,459 INFO L242 Difference]: Finished difference. Result has 257 places, 348 transitions, 6886 flow [2022-01-19 13:18:38,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6746, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6886, PETRI_PLACES=257, PETRI_TRANSITIONS=348} [2022-01-19 13:18:38,460 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2022-01-19 13:18:38,460 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 348 transitions, 6886 flow [2022-01-19 13:18:38,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:38,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:38,460 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] [2022-01-19 13:18:38,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 13:18:38,461 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash -787788849, now seen corresponding path program 7 times [2022-01-19 13:18:38,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:38,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792379091] [2022-01-19 13:18:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:38,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:38,528 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 13:18:38,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792379091] [2022-01-19 13:18:38,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792379091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:38,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:38,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:38,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510340570] [2022-01-19 13:18:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:38,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:38,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:38,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:38,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 348 transitions, 6886 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:38,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:38,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:38,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:39,146 INFO L129 PetriNetUnfolder]: 612/4777 cut-off events. [2022-01-19 13:18:39,146 INFO L130 PetriNetUnfolder]: For 33927/34094 co-relation queries the response was YES. [2022-01-19 13:18:39,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 4777 events. 612/4777 cut-off events. For 33927/34094 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 55942 event pairs, 146 based on Foata normal form. 54/4628 useless extension candidates. Maximal degree in co-relation 14081. Up to 485 conditions per place. [2022-01-19 13:18:39,191 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 211 selfloop transitions, 64 changer transitions 1/368 dead transitions. [2022-01-19 13:18:39,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 368 transitions, 7579 flow [2022-01-19 13:18:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2022-01-19 13:18:39,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2022-01-19 13:18:39,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2022-01-19 13:18:39,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2022-01-19 13:18:39,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:39,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2022-01-19 13:18:39,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 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 13:18:39,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:39,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:39,195 INFO L186 Difference]: Start difference. First operand has 257 places, 348 transitions, 6886 flow. Second operand 5 states and 544 transitions. [2022-01-19 13:18:39,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 368 transitions, 7579 flow [2022-01-19 13:18:39,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 368 transitions, 7400 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-01-19 13:18:39,338 INFO L242 Difference]: Finished difference. Result has 257 places, 346 transitions, 6805 flow [2022-01-19 13:18:39,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6639, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6805, PETRI_PLACES=257, PETRI_TRANSITIONS=346} [2022-01-19 13:18:39,338 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2022-01-19 13:18:39,338 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 346 transitions, 6805 flow [2022-01-19 13:18:39,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:39,339 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:39,339 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] [2022-01-19 13:18:39,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 13:18:39,339 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 745881139, now seen corresponding path program 8 times [2022-01-19 13:18:39,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:39,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808685013] [2022-01-19 13:18:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:39,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:39,422 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 13:18:39,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808685013] [2022-01-19 13:18:39,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808685013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:39,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:39,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:39,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370411944] [2022-01-19 13:18:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:39,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:39,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:39,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:39,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:39,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 346 transitions, 6805 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:39,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:39,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:39,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:40,161 INFO L129 PetriNetUnfolder]: 648/5035 cut-off events. [2022-01-19 13:18:40,161 INFO L130 PetriNetUnfolder]: For 35410/35593 co-relation queries the response was YES. [2022-01-19 13:18:40,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 5035 events. 648/5035 cut-off events. For 35410/35593 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 59718 event pairs, 164 based on Foata normal form. 54/4871 useless extension candidates. Maximal degree in co-relation 14947. Up to 510 conditions per place. [2022-01-19 13:18:40,210 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 206 selfloop transitions, 87 changer transitions 0/385 dead transitions. [2022-01-19 13:18:40,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 385 transitions, 8111 flow [2022-01-19 13:18:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 13:18:40,212 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 13:18:40,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 13:18:40,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 13:18:40,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:40,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 13:18:40,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 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 13:18:40,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:40,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:40,214 INFO L186 Difference]: Start difference. First operand has 257 places, 346 transitions, 6805 flow. Second operand 5 states and 548 transitions. [2022-01-19 13:18:40,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 385 transitions, 8111 flow [2022-01-19 13:18:40,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 385 transitions, 7976 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-01-19 13:18:40,368 INFO L242 Difference]: Finished difference. Result has 261 places, 361 transitions, 7423 flow [2022-01-19 13:18:40,368 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7423, PETRI_PLACES=261, PETRI_TRANSITIONS=361} [2022-01-19 13:18:40,368 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 149 predicate places. [2022-01-19 13:18:40,368 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 361 transitions, 7423 flow [2022-01-19 13:18:40,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:40,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:40,369 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] [2022-01-19 13:18:40,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 13:18:40,369 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:40,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:40,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1821057965, now seen corresponding path program 9 times [2022-01-19 13:18:40,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:40,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407236863] [2022-01-19 13:18:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:40,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:40,436 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 13:18:40,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:40,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407236863] [2022-01-19 13:18:40,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407236863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:40,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:40,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:40,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745297599] [2022-01-19 13:18:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:40,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:40,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:40,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:40,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 361 transitions, 7423 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:40,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:40,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:40,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:41,143 INFO L129 PetriNetUnfolder]: 660/5128 cut-off events. [2022-01-19 13:18:41,143 INFO L130 PetriNetUnfolder]: For 40522/40710 co-relation queries the response was YES. [2022-01-19 13:18:41,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16151 conditions, 5128 events. 660/5128 cut-off events. For 40522/40710 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 61162 event pairs, 201 based on Foata normal form. 56/4970 useless extension candidates. Maximal degree in co-relation 15232. Up to 524 conditions per place. [2022-01-19 13:18:41,189 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 212 selfloop transitions, 78 changer transitions 0/382 dead transitions. [2022-01-19 13:18:41,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 382 transitions, 8222 flow [2022-01-19 13:18:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2022-01-19 13:18:41,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-01-19 13:18:41,190 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2022-01-19 13:18:41,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2022-01-19 13:18:41,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:41,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2022-01-19 13:18:41,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 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 13:18:41,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:41,192 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:41,193 INFO L186 Difference]: Start difference. First operand has 261 places, 361 transitions, 7423 flow. Second operand 5 states and 545 transitions. [2022-01-19 13:18:41,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 382 transitions, 8222 flow [2022-01-19 13:18:41,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 382 transitions, 8164 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:41,338 INFO L242 Difference]: Finished difference. Result has 265 places, 363 transitions, 7635 flow [2022-01-19 13:18:41,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7635, PETRI_PLACES=265, PETRI_TRANSITIONS=363} [2022-01-19 13:18:41,338 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 153 predicate places. [2022-01-19 13:18:41,339 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 363 transitions, 7635 flow [2022-01-19 13:18:41,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:41,339 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:41,339 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] [2022-01-19 13:18:41,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 13:18:41,339 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash -611779683, now seen corresponding path program 7 times [2022-01-19 13:18:41,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:41,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392978573] [2022-01-19 13:18:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:41,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:41,409 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 13:18:41,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:41,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392978573] [2022-01-19 13:18:41,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392978573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:41,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:41,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:41,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681279409] [2022-01-19 13:18:41,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:41,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:41,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:41,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:41,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 363 transitions, 7635 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:41,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:41,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:41,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:42,159 INFO L129 PetriNetUnfolder]: 714/5464 cut-off events. [2022-01-19 13:18:42,160 INFO L130 PetriNetUnfolder]: For 43137/43348 co-relation queries the response was YES. [2022-01-19 13:18:42,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17146 conditions, 5464 events. 714/5464 cut-off events. For 43137/43348 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 65767 event pairs, 191 based on Foata normal form. 68/5318 useless extension candidates. Maximal degree in co-relation 16042. Up to 593 conditions per place. [2022-01-19 13:18:42,200 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 207 selfloop transitions, 83 changer transitions 7/389 dead transitions. [2022-01-19 13:18:42,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 389 transitions, 8607 flow [2022-01-19 13:18:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 13:18:42,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 13:18:42,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 13:18:42,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 13:18:42,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:42,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 13:18:42,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 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 13:18:42,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:42,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:42,204 INFO L186 Difference]: Start difference. First operand has 265 places, 363 transitions, 7635 flow. Second operand 5 states and 548 transitions. [2022-01-19 13:18:42,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 389 transitions, 8607 flow [2022-01-19 13:18:42,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 389 transitions, 8506 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 13:18:42,363 INFO L242 Difference]: Finished difference. Result has 270 places, 365 transitions, 7874 flow [2022-01-19 13:18:42,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7492, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7874, PETRI_PLACES=270, PETRI_TRANSITIONS=365} [2022-01-19 13:18:42,364 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 158 predicate places. [2022-01-19 13:18:42,364 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 365 transitions, 7874 flow [2022-01-19 13:18:42,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:42,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:42,364 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] [2022-01-19 13:18:42,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 13:18:42,364 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:42,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1746066995, now seen corresponding path program 8 times [2022-01-19 13:18:42,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:42,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924692573] [2022-01-19 13:18:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:42,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:42,426 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 13:18:42,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:42,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924692573] [2022-01-19 13:18:42,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924692573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:42,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:42,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:42,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704020713] [2022-01-19 13:18:42,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:42,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:42,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:42,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:42,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:42,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 365 transitions, 7874 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:42,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:42,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:42,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:43,196 INFO L129 PetriNetUnfolder]: 677/5138 cut-off events. [2022-01-19 13:18:43,197 INFO L130 PetriNetUnfolder]: For 42257/42448 co-relation queries the response was YES. [2022-01-19 13:18:43,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16655 conditions, 5138 events. 677/5138 cut-off events. For 42257/42448 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 61082 event pairs, 181 based on Foata normal form. 54/4961 useless extension candidates. Maximal degree in co-relation 15533. Up to 531 conditions per place. [2022-01-19 13:18:43,252 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 208 selfloop transitions, 81 changer transitions 1/382 dead transitions. [2022-01-19 13:18:43,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 382 transitions, 8554 flow [2022-01-19 13:18:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 13:18:43,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 13:18:43,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 13:18:43,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 13:18:43,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:43,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 13:18:43,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 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 13:18:43,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:43,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:43,255 INFO L186 Difference]: Start difference. First operand has 270 places, 365 transitions, 7874 flow. Second operand 5 states and 548 transitions. [2022-01-19 13:18:43,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 382 transitions, 8554 flow [2022-01-19 13:18:43,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 382 transitions, 8515 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:43,429 INFO L242 Difference]: Finished difference. Result has 273 places, 363 transitions, 7910 flow [2022-01-19 13:18:43,429 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7910, PETRI_PLACES=273, PETRI_TRANSITIONS=363} [2022-01-19 13:18:43,429 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2022-01-19 13:18:43,430 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 363 transitions, 7910 flow [2022-01-19 13:18:43,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:43,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:43,430 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] [2022-01-19 13:18:43,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 13:18:43,430 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -151886183, now seen corresponding path program 3 times [2022-01-19 13:18:43,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123936679] [2022-01-19 13:18:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:43,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:43,540 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 13:18:43,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123936679] [2022-01-19 13:18:43,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123936679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:43,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:43,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:43,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537800867] [2022-01-19 13:18:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:43,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:43,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:43,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:43,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 363 transitions, 7910 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:43,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:43,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:43,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:44,330 INFO L129 PetriNetUnfolder]: 724/5576 cut-off events. [2022-01-19 13:18:44,330 INFO L130 PetriNetUnfolder]: For 43940/44154 co-relation queries the response was YES. [2022-01-19 13:18:44,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17948 conditions, 5576 events. 724/5576 cut-off events. For 43940/44154 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 67317 event pairs, 188 based on Foata normal form. 62/5413 useless extension candidates. Maximal degree in co-relation 16811. Up to 596 conditions per place. [2022-01-19 13:18:44,377 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 229 selfloop transitions, 84 changer transitions 3/408 dead transitions. [2022-01-19 13:18:44,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 408 transitions, 9297 flow [2022-01-19 13:18:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 13:18:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 13:18:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 657 transitions. [2022-01-19 13:18:44,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8830645161290323 [2022-01-19 13:18:44,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 657 transitions. [2022-01-19 13:18:44,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 657 transitions. [2022-01-19 13:18:44,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:44,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 657 transitions. [2022-01-19 13:18:44,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 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 13:18:44,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:44,380 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:44,381 INFO L186 Difference]: Start difference. First operand has 273 places, 363 transitions, 7910 flow. Second operand 6 states and 657 transitions. [2022-01-19 13:18:44,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 408 transitions, 9297 flow [2022-01-19 13:18:44,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 408 transitions, 9147 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-01-19 13:18:44,579 INFO L242 Difference]: Finished difference. Result has 279 places, 378 transitions, 8454 flow [2022-01-19 13:18:44,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7768, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8454, PETRI_PLACES=279, PETRI_TRANSITIONS=378} [2022-01-19 13:18:44,579 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2022-01-19 13:18:44,580 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 378 transitions, 8454 flow [2022-01-19 13:18:44,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:44,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:44,580 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] [2022-01-19 13:18:44,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 13:18:44,580 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:44,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1123016729, now seen corresponding path program 4 times [2022-01-19 13:18:44,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:44,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277373655] [2022-01-19 13:18:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:44,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:44,665 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 13:18:44,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:44,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277373655] [2022-01-19 13:18:44,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277373655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:44,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:44,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:44,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182658156] [2022-01-19 13:18:44,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:44,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:44,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:44,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:44,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:44,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:44,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 378 transitions, 8454 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:44,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:44,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:44,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:45,505 INFO L129 PetriNetUnfolder]: 768/5979 cut-off events. [2022-01-19 13:18:45,505 INFO L130 PetriNetUnfolder]: For 46746/47007 co-relation queries the response was YES. [2022-01-19 13:18:45,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18854 conditions, 5979 events. 768/5979 cut-off events. For 46746/47007 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 73077 event pairs, 206 based on Foata normal form. 72/5809 useless extension candidates. Maximal degree in co-relation 17671. Up to 639 conditions per place. [2022-01-19 13:18:45,566 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 235 selfloop transitions, 89 changer transitions 3/419 dead transitions. [2022-01-19 13:18:45,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 419 transitions, 9735 flow [2022-01-19 13:18:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 13:18:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 13:18:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2022-01-19 13:18:45,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2022-01-19 13:18:45,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2022-01-19 13:18:45,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2022-01-19 13:18:45,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:45,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2022-01-19 13:18:45,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 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 13:18:45,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:45,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:45,570 INFO L186 Difference]: Start difference. First operand has 279 places, 378 transitions, 8454 flow. Second operand 6 states and 658 transitions. [2022-01-19 13:18:45,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 419 transitions, 9735 flow [2022-01-19 13:18:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 419 transitions, 9671 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:45,806 INFO L242 Difference]: Finished difference. Result has 286 places, 390 transitions, 8964 flow [2022-01-19 13:18:45,806 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8369, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8964, PETRI_PLACES=286, PETRI_TRANSITIONS=390} [2022-01-19 13:18:45,806 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 174 predicate places. [2022-01-19 13:18:45,807 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 390 transitions, 8964 flow [2022-01-19 13:18:45,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:45,807 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:45,807 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] [2022-01-19 13:18:45,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 13:18:45,807 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1826253479, now seen corresponding path program 5 times [2022-01-19 13:18:45,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:45,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962119449] [2022-01-19 13:18:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:45,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:45,904 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 13:18:45,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:45,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962119449] [2022-01-19 13:18:45,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962119449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:45,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:45,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:45,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834746814] [2022-01-19 13:18:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:45,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:45,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:45,906 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:45,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 390 transitions, 8964 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:45,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:45,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:45,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:46,921 INFO L129 PetriNetUnfolder]: 767/6094 cut-off events. [2022-01-19 13:18:46,921 INFO L130 PetriNetUnfolder]: For 49310/49578 co-relation queries the response was YES. [2022-01-19 13:18:46,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19264 conditions, 6094 events. 767/6094 cut-off events. For 49310/49578 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 75184 event pairs, 249 based on Foata normal form. 71/5911 useless extension candidates. Maximal degree in co-relation 18071. Up to 864 conditions per place. [2022-01-19 13:18:46,983 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 270 selfloop transitions, 44 changer transitions 2/408 dead transitions. [2022-01-19 13:18:46,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 408 transitions, 9763 flow [2022-01-19 13:18:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-01-19 13:18:46,985 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-01-19 13:18:46,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-01-19 13:18:46,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-01-19 13:18:46,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:46,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-01-19 13:18:46,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 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 13:18:46,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:46,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:46,986 INFO L186 Difference]: Start difference. First operand has 286 places, 390 transitions, 8964 flow. Second operand 5 states and 538 transitions. [2022-01-19 13:18:46,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 408 transitions, 9763 flow [2022-01-19 13:18:47,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 408 transitions, 9749 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:47,222 INFO L242 Difference]: Finished difference. Result has 291 places, 390 transitions, 9054 flow [2022-01-19 13:18:47,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8910, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9054, PETRI_PLACES=291, PETRI_TRANSITIONS=390} [2022-01-19 13:18:47,222 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 179 predicate places. [2022-01-19 13:18:47,222 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 390 transitions, 9054 flow [2022-01-19 13:18:47,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:47,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:47,227 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] [2022-01-19 13:18:47,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 13:18:47,227 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash 899180921, now seen corresponding path program 4 times [2022-01-19 13:18:47,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585917734] [2022-01-19 13:18:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:47,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:47,305 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 13:18:47,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:47,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585917734] [2022-01-19 13:18:47,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585917734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:47,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:47,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:47,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869479446] [2022-01-19 13:18:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:47,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:47,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:47,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:47,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 390 transitions, 9054 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:47,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:47,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:47,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:48,259 INFO L129 PetriNetUnfolder]: 740/5853 cut-off events. [2022-01-19 13:18:48,259 INFO L130 PetriNetUnfolder]: For 51735/51999 co-relation queries the response was YES. [2022-01-19 13:18:48,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18866 conditions, 5853 events. 740/5853 cut-off events. For 51735/51999 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71719 event pairs, 225 based on Foata normal form. 69/5669 useless extension candidates. Maximal degree in co-relation 17671. Up to 562 conditions per place. [2022-01-19 13:18:48,322 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 245 selfloop transitions, 70 changer transitions 2/409 dead transitions. [2022-01-19 13:18:48,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 409 transitions, 9882 flow [2022-01-19 13:18:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2022-01-19 13:18:48,324 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8741935483870967 [2022-01-19 13:18:48,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2022-01-19 13:18:48,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2022-01-19 13:18:48,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:48,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2022-01-19 13:18:48,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 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 13:18:48,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:48,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:48,326 INFO L186 Difference]: Start difference. First operand has 291 places, 390 transitions, 9054 flow. Second operand 5 states and 542 transitions. [2022-01-19 13:18:48,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 409 transitions, 9882 flow [2022-01-19 13:18:48,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 409 transitions, 9861 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:48,648 INFO L242 Difference]: Finished difference. Result has 295 places, 390 transitions, 9223 flow [2022-01-19 13:18:48,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9223, PETRI_PLACES=295, PETRI_TRANSITIONS=390} [2022-01-19 13:18:48,649 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 183 predicate places. [2022-01-19 13:18:48,649 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 390 transitions, 9223 flow [2022-01-19 13:18:48,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:48,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:48,649 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] [2022-01-19 13:18:48,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 13:18:48,650 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1814977475, now seen corresponding path program 9 times [2022-01-19 13:18:48,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:48,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374627735] [2022-01-19 13:18:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:48,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:48,704 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 13:18:48,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:48,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374627735] [2022-01-19 13:18:48,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374627735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:48,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:48,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:48,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642275805] [2022-01-19 13:18:48,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:48,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:48,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:48,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:48,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 390 transitions, 9223 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:48,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:48,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:48,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:49,817 INFO L129 PetriNetUnfolder]: 760/6040 cut-off events. [2022-01-19 13:18:49,817 INFO L130 PetriNetUnfolder]: For 54023/54293 co-relation queries the response was YES. [2022-01-19 13:18:49,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 6040 events. 760/6040 cut-off events. For 54023/54293 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 74288 event pairs, 198 based on Foata normal form. 72/5867 useless extension candidates. Maximal degree in co-relation 18233. Up to 627 conditions per place. [2022-01-19 13:18:49,885 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 244 selfloop transitions, 90 changer transitions 6/432 dead transitions. [2022-01-19 13:18:49,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 432 transitions, 10636 flow [2022-01-19 13:18:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 13:18:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 13:18:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2022-01-19 13:18:49,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-01-19 13:18:49,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2022-01-19 13:18:49,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2022-01-19 13:18:49,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:49,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2022-01-19 13:18:49,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 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 13:18:49,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:49,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:49,888 INFO L186 Difference]: Start difference. First operand has 295 places, 390 transitions, 9223 flow. Second operand 6 states and 660 transitions. [2022-01-19 13:18:49,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 432 transitions, 10636 flow [2022-01-19 13:18:50,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 432 transitions, 10542 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:18:50,161 INFO L242 Difference]: Finished difference. Result has 301 places, 403 transitions, 9843 flow [2022-01-19 13:18:50,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9098, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9843, PETRI_PLACES=301, PETRI_TRANSITIONS=403} [2022-01-19 13:18:50,161 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 189 predicate places. [2022-01-19 13:18:50,161 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 403 transitions, 9843 flow [2022-01-19 13:18:50,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:50,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:50,162 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] [2022-01-19 13:18:50,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 13:18:50,162 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash 216516765, now seen corresponding path program 5 times [2022-01-19 13:18:50,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:50,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114188177] [2022-01-19 13:18:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:50,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:50,262 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 13:18:50,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:50,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114188177] [2022-01-19 13:18:50,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114188177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:50,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:50,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:50,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24110891] [2022-01-19 13:18:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:50,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:50,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 403 transitions, 9843 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:50,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:50,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:50,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:51,215 INFO L129 PetriNetUnfolder]: 755/5952 cut-off events. [2022-01-19 13:18:51,216 INFO L130 PetriNetUnfolder]: For 52888/53167 co-relation queries the response was YES. [2022-01-19 13:18:51,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19477 conditions, 5952 events. 755/5952 cut-off events. For 52888/53167 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 72865 event pairs, 156 based on Foata normal form. 72/5765 useless extension candidates. Maximal degree in co-relation 18260. Up to 818 conditions per place. [2022-01-19 13:18:51,273 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 272 selfloop transitions, 54 changer transitions 0/418 dead transitions. [2022-01-19 13:18:51,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 418 transitions, 10650 flow [2022-01-19 13:18:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-01-19 13:18:51,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-01-19 13:18:51,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-01-19 13:18:51,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-01-19 13:18:51,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:51,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-01-19 13:18:51,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 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 13:18:51,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:51,275 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:51,276 INFO L186 Difference]: Start difference. First operand has 301 places, 403 transitions, 9843 flow. Second operand 5 states and 538 transitions. [2022-01-19 13:18:51,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 418 transitions, 10650 flow [2022-01-19 13:18:51,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 418 transitions, 10604 flow, removed 23 selfloop flow, removed 0 redundant places. [2022-01-19 13:18:51,525 INFO L242 Difference]: Finished difference. Result has 306 places, 406 transitions, 10003 flow [2022-01-19 13:18:51,526 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9759, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10003, PETRI_PLACES=306, PETRI_TRANSITIONS=406} [2022-01-19 13:18:51,526 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 194 predicate places. [2022-01-19 13:18:51,526 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 406 transitions, 10003 flow [2022-01-19 13:18:51,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:51,527 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:51,527 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] [2022-01-19 13:18:51,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 13:18:51,527 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1228147129, now seen corresponding path program 6 times [2022-01-19 13:18:51,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:51,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041902961] [2022-01-19 13:18:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:51,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:51,590 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 13:18:51,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:51,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041902961] [2022-01-19 13:18:51,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041902961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:51,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:51,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:51,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712451028] [2022-01-19 13:18:51,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:51,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:51,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:51,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:51,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:51,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 406 transitions, 10003 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:51,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:51,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:51,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:52,565 INFO L129 PetriNetUnfolder]: 744/5959 cut-off events. [2022-01-19 13:18:52,565 INFO L130 PetriNetUnfolder]: For 54521/54785 co-relation queries the response was YES. [2022-01-19 13:18:52,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19547 conditions, 5959 events. 744/5959 cut-off events. For 54521/54785 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 73103 event pairs, 201 based on Foata normal form. 69/5777 useless extension candidates. Maximal degree in co-relation 18329. Up to 627 conditions per place. [2022-01-19 13:18:52,635 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 260 selfloop transitions, 71 changer transitions 0/423 dead transitions. [2022-01-19 13:18:52,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 423 transitions, 10814 flow [2022-01-19 13:18:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-01-19 13:18:52,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-01-19 13:18:52,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-01-19 13:18:52,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-01-19 13:18:52,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:52,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-01-19 13:18:52,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 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 13:18:52,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:52,637 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:52,637 INFO L186 Difference]: Start difference. First operand has 306 places, 406 transitions, 10003 flow. Second operand 5 states and 541 transitions. [2022-01-19 13:18:52,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 423 transitions, 10814 flow [2022-01-19 13:18:52,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 423 transitions, 10769 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:52,916 INFO L242 Difference]: Finished difference. Result has 310 places, 407 transitions, 10148 flow [2022-01-19 13:18:52,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9926, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10148, PETRI_PLACES=310, PETRI_TRANSITIONS=407} [2022-01-19 13:18:52,917 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 198 predicate places. [2022-01-19 13:18:52,917 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 407 transitions, 10148 flow [2022-01-19 13:18:52,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:52,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:52,917 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] [2022-01-19 13:18:52,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 13:18:52,917 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash 947096267, now seen corresponding path program 6 times [2022-01-19 13:18:52,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:52,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5785584] [2022-01-19 13:18:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:52,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:52,988 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 13:18:52,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:52,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5785584] [2022-01-19 13:18:52,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5785584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:52,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:52,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:52,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316512488] [2022-01-19 13:18:52,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:52,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:52,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:52,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:52,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:52,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 407 transitions, 10148 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:52,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:52,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:52,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:53,919 INFO L129 PetriNetUnfolder]: 738/5957 cut-off events. [2022-01-19 13:18:53,919 INFO L130 PetriNetUnfolder]: For 59717/59974 co-relation queries the response was YES. [2022-01-19 13:18:53,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19605 conditions, 5957 events. 738/5957 cut-off events. For 59717/59974 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 73194 event pairs, 186 based on Foata normal form. 70/5796 useless extension candidates. Maximal degree in co-relation 18402. Up to 600 conditions per place. [2022-01-19 13:18:53,972 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 237 selfloop transitions, 97 changer transitions 2/428 dead transitions. [2022-01-19 13:18:53,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 428 transitions, 10938 flow [2022-01-19 13:18:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 13:18:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 13:18:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2022-01-19 13:18:53,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885752688172043 [2022-01-19 13:18:53,974 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2022-01-19 13:18:53,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2022-01-19 13:18:53,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:53,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2022-01-19 13:18:53,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 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 13:18:53,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:53,975 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:18:53,975 INFO L186 Difference]: Start difference. First operand has 310 places, 407 transitions, 10148 flow. Second operand 6 states and 659 transitions. [2022-01-19 13:18:53,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 428 transitions, 10938 flow [2022-01-19 13:18:54,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 428 transitions, 10880 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 13:18:54,305 INFO L242 Difference]: Finished difference. Result has 314 places, 405 transitions, 10205 flow [2022-01-19 13:18:54,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10205, PETRI_PLACES=314, PETRI_TRANSITIONS=405} [2022-01-19 13:18:54,306 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 202 predicate places. [2022-01-19 13:18:54,306 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 405 transitions, 10205 flow [2022-01-19 13:18:54,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:54,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:54,306 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] [2022-01-19 13:18:54,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 13:18:54,307 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1895957427, now seen corresponding path program 7 times [2022-01-19 13:18:54,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:54,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901007966] [2022-01-19 13:18:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:54,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:54,393 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 13:18:54,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901007966] [2022-01-19 13:18:54,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901007966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:54,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:54,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:54,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513921305] [2022-01-19 13:18:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:54,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:54,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:54,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:54,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 405 transitions, 10205 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:54,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:54,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:54,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:55,335 INFO L129 PetriNetUnfolder]: 771/6144 cut-off events. [2022-01-19 13:18:55,335 INFO L130 PetriNetUnfolder]: For 57411/57728 co-relation queries the response was YES. [2022-01-19 13:18:55,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20163 conditions, 6144 events. 771/6144 cut-off events. For 57411/57728 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 75888 event pairs, 202 based on Foata normal form. 79/5960 useless extension candidates. Maximal degree in co-relation 18934. Up to 610 conditions per place. [2022-01-19 13:18:55,397 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 259 selfloop transitions, 82 changer transitions 1/434 dead transitions. [2022-01-19 13:18:55,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 434 transitions, 11421 flow [2022-01-19 13:18:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 13:18:55,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 13:18:55,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 13:18:55,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 13:18:55,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:55,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 13:18:55,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 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 13:18:55,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:55,400 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:55,400 INFO L186 Difference]: Start difference. First operand has 314 places, 405 transitions, 10205 flow. Second operand 5 states and 546 transitions. [2022-01-19 13:18:55,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 434 transitions, 11421 flow [2022-01-19 13:18:55,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 434 transitions, 11324 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-01-19 13:18:55,747 INFO L242 Difference]: Finished difference. Result has 318 places, 411 transitions, 10627 flow [2022-01-19 13:18:55,747 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10078, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10627, PETRI_PLACES=318, PETRI_TRANSITIONS=411} [2022-01-19 13:18:55,748 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 206 predicate places. [2022-01-19 13:18:55,748 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 411 transitions, 10627 flow [2022-01-19 13:18:55,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:55,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:55,748 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] [2022-01-19 13:18:55,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 13:18:55,748 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 247948725, now seen corresponding path program 7 times [2022-01-19 13:18:55,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:55,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052969301] [2022-01-19 13:18:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:55,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:55,814 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 13:18:55,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:55,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052969301] [2022-01-19 13:18:55,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052969301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:55,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:55,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516733727] [2022-01-19 13:18:55,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:55,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:55,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:55,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:55,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 411 transitions, 10627 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:55,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:55,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:55,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:56,766 INFO L129 PetriNetUnfolder]: 783/6266 cut-off events. [2022-01-19 13:18:56,766 INFO L130 PetriNetUnfolder]: For 64617/64945 co-relation queries the response was YES. [2022-01-19 13:18:56,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 6266 events. 783/6266 cut-off events. For 64617/64945 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 77986 event pairs, 213 based on Foata normal form. 94/6098 useless extension candidates. Maximal degree in co-relation 19491. Up to 635 conditions per place. [2022-01-19 13:18:56,824 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 250 selfloop transitions, 88 changer transitions 6/436 dead transitions. [2022-01-19 13:18:56,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 436 transitions, 11625 flow [2022-01-19 13:18:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 13:18:56,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 13:18:56,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 13:18:56,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 13:18:56,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:56,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 13:18:56,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 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 13:18:56,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:56,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:56,827 INFO L186 Difference]: Start difference. First operand has 318 places, 411 transitions, 10627 flow. Second operand 5 states and 553 transitions. [2022-01-19 13:18:56,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 436 transitions, 11625 flow [2022-01-19 13:18:57,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 436 transitions, 11558 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 13:18:57,115 INFO L242 Difference]: Finished difference. Result has 323 places, 410 transitions, 10766 flow [2022-01-19 13:18:57,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10766, PETRI_PLACES=323, PETRI_TRANSITIONS=410} [2022-01-19 13:18:57,116 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 211 predicate places. [2022-01-19 13:18:57,116 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 410 transitions, 10766 flow [2022-01-19 13:18:57,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:57,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:57,117 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] [2022-01-19 13:18:57,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 13:18:57,117 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1382150905, now seen corresponding path program 8 times [2022-01-19 13:18:57,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:57,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759846151] [2022-01-19 13:18:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:57,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:57,189 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 13:18:57,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759846151] [2022-01-19 13:18:57,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759846151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:57,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:57,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:57,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833414272] [2022-01-19 13:18:57,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:57,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:57,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:57,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:57,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 410 transitions, 10766 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:57,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:57,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:57,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:58,157 INFO L129 PetriNetUnfolder]: 756/6078 cut-off events. [2022-01-19 13:18:58,157 INFO L130 PetriNetUnfolder]: For 64566/64874 co-relation queries the response was YES. [2022-01-19 13:18:58,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20354 conditions, 6078 events. 756/6078 cut-off events. For 64566/64874 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 75360 event pairs, 216 based on Foata normal form. 77/5903 useless extension candidates. Maximal degree in co-relation 19153. Up to 598 conditions per place. [2022-01-19 13:18:58,224 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 257 selfloop transitions, 79 changer transitions 1/429 dead transitions. [2022-01-19 13:18:58,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 429 transitions, 11601 flow [2022-01-19 13:18:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-01-19 13:18:58,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-01-19 13:18:58,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-01-19 13:18:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-01-19 13:18:58,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:58,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-01-19 13:18:58,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 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 13:18:58,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:58,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:58,226 INFO L186 Difference]: Start difference. First operand has 323 places, 410 transitions, 10766 flow. Second operand 5 states and 551 transitions. [2022-01-19 13:18:58,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 429 transitions, 11601 flow [2022-01-19 13:18:58,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 429 transitions, 11445 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-01-19 13:18:58,539 INFO L242 Difference]: Finished difference. Result has 324 places, 408 transitions, 10675 flow [2022-01-19 13:18:58,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10567, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10675, PETRI_PLACES=324, PETRI_TRANSITIONS=408} [2022-01-19 13:18:58,540 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 212 predicate places. [2022-01-19 13:18:58,540 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 408 transitions, 10675 flow [2022-01-19 13:18:58,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:58,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:58,541 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] [2022-01-19 13:18:58,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 13:18:58,541 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:18:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1751579267, now seen corresponding path program 8 times [2022-01-19 13:18:58,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:58,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585226552] [2022-01-19 13:18:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:58,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:58,615 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 13:18:58,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:58,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585226552] [2022-01-19 13:18:58,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585226552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:58,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:58,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:18:58,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534627665] [2022-01-19 13:18:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:58,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:18:58,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:18:58,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:18:58,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:18:58,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 408 transitions, 10675 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:18:58,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:58,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:18:58,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:59,738 INFO L129 PetriNetUnfolder]: 775/6239 cut-off events. [2022-01-19 13:18:59,738 INFO L130 PetriNetUnfolder]: For 61336/61665 co-relation queries the response was YES. [2022-01-19 13:18:59,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20634 conditions, 6239 events. 775/6239 cut-off events. For 61336/61665 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 77376 event pairs, 204 based on Foata normal form. 80/6053 useless extension candidates. Maximal degree in co-relation 19472. Up to 626 conditions per place. [2022-01-19 13:18:59,810 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 247 selfloop transitions, 89 changer transitions 0/428 dead transitions. [2022-01-19 13:18:59,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 428 transitions, 11591 flow [2022-01-19 13:18:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:18:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:18:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 13:18:59,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 13:18:59,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 13:18:59,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 13:18:59,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:59,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 13:18:59,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 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 13:18:59,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:59,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:18:59,813 INFO L186 Difference]: Start difference. First operand has 324 places, 408 transitions, 10675 flow. Second operand 5 states and 546 transitions. [2022-01-19 13:18:59,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 428 transitions, 11591 flow [2022-01-19 13:19:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 428 transitions, 11467 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-01-19 13:19:00,234 INFO L242 Difference]: Finished difference. Result has 325 places, 410 transitions, 10866 flow [2022-01-19 13:19:00,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10508, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10866, PETRI_PLACES=325, PETRI_TRANSITIONS=410} [2022-01-19 13:19:00,235 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 213 predicate places. [2022-01-19 13:19:00,235 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 410 transitions, 10866 flow [2022-01-19 13:19:00,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:00,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:00,236 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] [2022-01-19 13:19:00,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 13:19:00,236 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1641676151, now seen corresponding path program 10 times [2022-01-19 13:19:00,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:00,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030221933] [2022-01-19 13:19:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:00,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:00,313 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 13:19:00,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:00,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030221933] [2022-01-19 13:19:00,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030221933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:00,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:00,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:19:00,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419344640] [2022-01-19 13:19:00,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:00,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:19:00,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:19:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:19:00,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:00,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 410 transitions, 10866 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:00,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:00,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:00,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:01,252 INFO L129 PetriNetUnfolder]: 777/6348 cut-off events. [2022-01-19 13:19:01,252 INFO L130 PetriNetUnfolder]: For 67814/68108 co-relation queries the response was YES. [2022-01-19 13:19:01,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21027 conditions, 6348 events. 777/6348 cut-off events. For 67814/68108 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 79249 event pairs, 225 based on Foata normal form. 90/6163 useless extension candidates. Maximal degree in co-relation 19660. Up to 649 conditions per place. [2022-01-19 13:19:01,320 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 265 selfloop transitions, 85 changer transitions 2/444 dead transitions. [2022-01-19 13:19:01,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 444 transitions, 12409 flow [2022-01-19 13:19:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:19:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:19:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 13:19:01,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 13:19:01,321 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 13:19:01,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 13:19:01,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:01,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 13:19:01,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 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 13:19:01,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:01,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:01,323 INFO L186 Difference]: Start difference. First operand has 325 places, 410 transitions, 10866 flow. Second operand 5 states and 553 transitions. [2022-01-19 13:19:01,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 444 transitions, 12409 flow [2022-01-19 13:19:01,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 444 transitions, 12241 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 13:19:01,626 INFO L242 Difference]: Finished difference. Result has 329 places, 414 transitions, 11256 flow [2022-01-19 13:19:01,627 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10582, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11256, PETRI_PLACES=329, PETRI_TRANSITIONS=414} [2022-01-19 13:19:01,627 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-01-19 13:19:01,627 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 414 transitions, 11256 flow [2022-01-19 13:19:01,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:01,628 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:01,628 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] [2022-01-19 13:19:01,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 13:19:01,628 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -892420571, now seen corresponding path program 10 times [2022-01-19 13:19:01,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:01,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485408550] [2022-01-19 13:19:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:01,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:01,701 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 13:19:01,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:01,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485408550] [2022-01-19 13:19:01,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485408550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:01,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:01,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:19:01,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677887184] [2022-01-19 13:19:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:01,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:19:01,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:19:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:19:01,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:01,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 414 transitions, 11256 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:01,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:01,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:01,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:02,716 INFO L129 PetriNetUnfolder]: 802/6544 cut-off events. [2022-01-19 13:19:02,717 INFO L130 PetriNetUnfolder]: For 71410/71727 co-relation queries the response was YES. [2022-01-19 13:19:02,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21929 conditions, 6544 events. 802/6544 cut-off events. For 71410/71727 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 82364 event pairs, 256 based on Foata normal form. 80/6341 useless extension candidates. Maximal degree in co-relation 20453. Up to 662 conditions per place. [2022-01-19 13:19:02,793 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 275 selfloop transitions, 86 changer transitions 1/454 dead transitions. [2022-01-19 13:19:02,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 454 transitions, 12889 flow [2022-01-19 13:19:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:19:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:19:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2022-01-19 13:19:02,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885483870967742 [2022-01-19 13:19:02,794 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2022-01-19 13:19:02,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2022-01-19 13:19:02,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:02,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2022-01-19 13:19:02,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 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 13:19:02,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:02,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:02,795 INFO L186 Difference]: Start difference. First operand has 329 places, 414 transitions, 11256 flow. Second operand 5 states and 549 transitions. [2022-01-19 13:19:02,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 454 transitions, 12889 flow [2022-01-19 13:19:03,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 454 transitions, 12827 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:19:03,156 INFO L242 Difference]: Finished difference. Result has 336 places, 430 transitions, 12154 flow [2022-01-19 13:19:03,156 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11156, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12154, PETRI_PLACES=336, PETRI_TRANSITIONS=430} [2022-01-19 13:19:03,157 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 224 predicate places. [2022-01-19 13:19:03,157 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 430 transitions, 12154 flow [2022-01-19 13:19:03,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:03,157 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:03,157 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] [2022-01-19 13:19:03,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 13:19:03,157 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:03,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1390556285, now seen corresponding path program 11 times [2022-01-19 13:19:03,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:03,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251675304] [2022-01-19 13:19:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:03,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:03,219 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 13:19:03,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251675304] [2022-01-19 13:19:03,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251675304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:03,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:03,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:19:03,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163471026] [2022-01-19 13:19:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:19:03,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:19:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:19:03,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:03,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 430 transitions, 12154 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:03,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:03,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:03,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:04,292 INFO L129 PetriNetUnfolder]: 811/6781 cut-off events. [2022-01-19 13:19:04,292 INFO L130 PetriNetUnfolder]: For 76561/76859 co-relation queries the response was YES. [2022-01-19 13:19:04,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22469 conditions, 6781 events. 811/6781 cut-off events. For 76561/76859 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86124 event pairs, 243 based on Foata normal form. 88/6564 useless extension candidates. Maximal degree in co-relation 20991. Up to 705 conditions per place. [2022-01-19 13:19:04,371 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 280 selfloop transitions, 84 changer transitions 3/459 dead transitions. [2022-01-19 13:19:04,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 459 transitions, 13449 flow [2022-01-19 13:19:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:19:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:19:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 13:19:04,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 13:19:04,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 13:19:04,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 13:19:04,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:04,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 13:19:04,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 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 13:19:04,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:04,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:04,374 INFO L186 Difference]: Start difference. First operand has 336 places, 430 transitions, 12154 flow. Second operand 5 states and 553 transitions. [2022-01-19 13:19:04,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 459 transitions, 13449 flow [2022-01-19 13:19:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 459 transitions, 13386 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-01-19 13:19:04,735 INFO L242 Difference]: Finished difference. Result has 342 places, 435 transitions, 12688 flow [2022-01-19 13:19:04,736 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11944, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12688, PETRI_PLACES=342, PETRI_TRANSITIONS=435} [2022-01-19 13:19:04,736 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 230 predicate places. [2022-01-19 13:19:04,736 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 435 transitions, 12688 flow [2022-01-19 13:19:04,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:04,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:04,736 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] [2022-01-19 13:19:04,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 13:19:04,737 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1855961239, now seen corresponding path program 12 times [2022-01-19 13:19:04,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:04,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132117446] [2022-01-19 13:19:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:04,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:04,789 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 13:19:04,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:04,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132117446] [2022-01-19 13:19:04,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132117446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:04,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:04,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:19:04,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490223632] [2022-01-19 13:19:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:04,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:19:04,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:19:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:19:04,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:04,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 435 transitions, 12688 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:04,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:04,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:04,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:05,917 INFO L129 PetriNetUnfolder]: 812/6736 cut-off events. [2022-01-19 13:19:05,917 INFO L130 PetriNetUnfolder]: For 76707/77021 co-relation queries the response was YES. [2022-01-19 13:19:05,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22631 conditions, 6736 events. 812/6736 cut-off events. For 76707/77021 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 85229 event pairs, 251 based on Foata normal form. 80/6513 useless extension candidates. Maximal degree in co-relation 21150. Up to 698 conditions per place. [2022-01-19 13:19:05,988 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 261 selfloop transitions, 100 changer transitions 3/456 dead transitions. [2022-01-19 13:19:05,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 456 transitions, 13563 flow [2022-01-19 13:19:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 13:19:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 13:19:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2022-01-19 13:19:05,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8776881720430108 [2022-01-19 13:19:05,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2022-01-19 13:19:05,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2022-01-19 13:19:05,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:05,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2022-01-19 13:19:05,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 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 13:19:05,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:19:05,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:19:05,991 INFO L186 Difference]: Start difference. First operand has 342 places, 435 transitions, 12688 flow. Second operand 6 states and 653 transitions. [2022-01-19 13:19:05,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 456 transitions, 13563 flow [2022-01-19 13:19:06,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 456 transitions, 13548 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:19:06,355 INFO L242 Difference]: Finished difference. Result has 346 places, 433 transitions, 12759 flow [2022-01-19 13:19:06,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12624, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12759, PETRI_PLACES=346, PETRI_TRANSITIONS=433} [2022-01-19 13:19:06,355 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 234 predicate places. [2022-01-19 13:19:06,355 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 433 transitions, 12759 flow [2022-01-19 13:19:06,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:06,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:06,356 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] [2022-01-19 13:19:06,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 13:19:06,356 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -581066469, now seen corresponding path program 11 times [2022-01-19 13:19:06,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:06,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065916575] [2022-01-19 13:19:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:06,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:19:06,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065916575] [2022-01-19 13:19:06,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065916575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:06,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:06,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:19:06,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933627742] [2022-01-19 13:19:06,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:06,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:19:06,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:06,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:19:06,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:19:06,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:06,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 433 transitions, 12759 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:06,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:06,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:06,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:07,556 INFO L129 PetriNetUnfolder]: 856/7153 cut-off events. [2022-01-19 13:19:07,557 INFO L130 PetriNetUnfolder]: For 78690/79030 co-relation queries the response was YES. [2022-01-19 13:19:07,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23549 conditions, 7153 events. 856/7153 cut-off events. For 78690/79030 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91471 event pairs, 258 based on Foata normal form. 90/6929 useless extension candidates. Maximal degree in co-relation 22183. Up to 770 conditions per place. [2022-01-19 13:19:07,642 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 272 selfloop transitions, 92 changer transitions 0/456 dead transitions. [2022-01-19 13:19:07,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 456 transitions, 13830 flow [2022-01-19 13:19:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:19:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:19:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 13:19:07,643 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 13:19:07,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 13:19:07,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 13:19:07,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:07,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 13:19:07,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 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 13:19:07,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:07,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 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 13:19:07,644 INFO L186 Difference]: Start difference. First operand has 346 places, 433 transitions, 12759 flow. Second operand 5 states and 548 transitions. [2022-01-19 13:19:07,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 456 transitions, 13830 flow [2022-01-19 13:19:08,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 456 transitions, 13592 flow, removed 44 selfloop flow, removed 4 redundant places. [2022-01-19 13:19:08,055 INFO L242 Difference]: Finished difference. Result has 348 places, 438 transitions, 13038 flow [2022-01-19 13:19:08,056 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12432, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13038, PETRI_PLACES=348, PETRI_TRANSITIONS=438} [2022-01-19 13:19:08,056 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 236 predicate places. [2022-01-19 13:19:08,056 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 438 transitions, 13038 flow [2022-01-19 13:19:08,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 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 13:19:08,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:08,057 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] [2022-01-19 13:19:08,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 13:19:08,057 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2128585162, now seen corresponding path program 1 times [2022-01-19 13:19:08,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:08,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876454258] [2022-01-19 13:19:08,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:08,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:08,110 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 13:19:08,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876454258] [2022-01-19 13:19:08,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876454258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:08,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:08,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:19:08,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751519970] [2022-01-19 13:19:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:08,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:19:08,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:19:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:19:08,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:08,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 438 transitions, 13038 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 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 13:19:08,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:08,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:08,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:09,200 INFO L129 PetriNetUnfolder]: 562/5490 cut-off events. [2022-01-19 13:19:09,200 INFO L130 PetriNetUnfolder]: For 57435/68368 co-relation queries the response was YES. [2022-01-19 13:19:09,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17023 conditions, 5490 events. 562/5490 cut-off events. For 57435/68368 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 71859 event pairs, 152 based on Foata normal form. 172/5443 useless extension candidates. Maximal degree in co-relation 15988. Up to 823 conditions per place. [2022-01-19 13:19:09,254 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 21 selfloop transitions, 0 changer transitions 132/458 dead transitions. [2022-01-19 13:19:09,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 458 transitions, 13175 flow [2022-01-19 13:19:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:19:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:19:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 916 transitions. [2022-01-19 13:19:09,256 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207885304659498 [2022-01-19 13:19:09,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 916 transitions. [2022-01-19 13:19:09,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 916 transitions. [2022-01-19 13:19:09,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:09,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 916 transitions. [2022-01-19 13:19:09,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.77777777777777) internal successors, (916), 9 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 13:19:09,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 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 13:19:09,258 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 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 13:19:09,258 INFO L186 Difference]: Start difference. First operand has 348 places, 438 transitions, 13038 flow. Second operand 9 states and 916 transitions. [2022-01-19 13:19:09,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 458 transitions, 13175 flow [2022-01-19 13:19:09,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 458 transitions, 13111 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 13:19:09,506 INFO L242 Difference]: Finished difference. Result has 362 places, 326 transitions, 8612 flow [2022-01-19 13:19:09,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12974, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8612, PETRI_PLACES=362, PETRI_TRANSITIONS=326} [2022-01-19 13:19:09,506 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 250 predicate places. [2022-01-19 13:19:09,507 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 326 transitions, 8612 flow [2022-01-19 13:19:09,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 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 13:19:09,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:09,507 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] [2022-01-19 13:19:09,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 13:19:09,507 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash -406601066, now seen corresponding path program 1 times [2022-01-19 13:19:09,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:09,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747727541] [2022-01-19 13:19:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:09,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:09,547 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 13:19:09,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747727541] [2022-01-19 13:19:09,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747727541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:09,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:09,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:19:09,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360542867] [2022-01-19 13:19:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:09,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:19:09,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:19:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:19:09,549 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 13:19:09,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 326 transitions, 8612 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 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 13:19:09,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:09,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 13:19:09,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:10,151 INFO L129 PetriNetUnfolder]: 396/3568 cut-off events. [2022-01-19 13:19:10,151 INFO L130 PetriNetUnfolder]: For 39922/44131 co-relation queries the response was YES. [2022-01-19 13:19:10,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12135 conditions, 3568 events. 396/3568 cut-off events. For 39922/44131 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43685 event pairs, 83 based on Foata normal form. 148/3587 useless extension candidates. Maximal degree in co-relation 12025. Up to 377 conditions per place. [2022-01-19 13:19:10,191 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 19 selfloop transitions, 0 changer transitions 172/345 dead transitions. [2022-01-19 13:19:10,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 345 transitions, 8753 flow [2022-01-19 13:19:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:19:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:19:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 914 transitions. [2022-01-19 13:19:10,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8189964157706093 [2022-01-19 13:19:10,193 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 914 transitions. [2022-01-19 13:19:10,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 914 transitions. [2022-01-19 13:19:10,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:10,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 914 transitions. [2022-01-19 13:19:10,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.55555555555556) internal successors, (914), 9 states have internal predecessors, (914), 0 states have call successors, (0), 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 13:19:10,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 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 13:19:10,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 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 13:19:10,195 INFO L186 Difference]: Start difference. First operand has 362 places, 326 transitions, 8612 flow. Second operand 9 states and 914 transitions. [2022-01-19 13:19:10,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 345 transitions, 8753 flow [2022-01-19 13:19:10,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 345 transitions, 7925 flow, removed 200 selfloop flow, removed 26 redundant places. [2022-01-19 13:19:10,359 INFO L242 Difference]: Finished difference. Result has 333 places, 173 transitions, 2897 flow [2022-01-19 13:19:10,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7794, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2897, PETRI_PLACES=333, PETRI_TRANSITIONS=173} [2022-01-19 13:19:10,359 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-01-19 13:19:10,359 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 173 transitions, 2897 flow [2022-01-19 13:19:10,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 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 13:19:10,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:10,360 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] [2022-01-19 13:19:10,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 13:19:10,360 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1967076804, now seen corresponding path program 1 times [2022-01-19 13:19:10,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:10,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279652876] [2022-01-19 13:19:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:10,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:10,442 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 13:19:10,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:10,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279652876] [2022-01-19 13:19:10,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279652876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:10,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:10,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:10,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751804332] [2022-01-19 13:19:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:10,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:10,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:10,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:10,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:10,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 173 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:10,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:10,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:10,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:10,975 INFO L129 PetriNetUnfolder]: 846/2443 cut-off events. [2022-01-19 13:19:10,975 INFO L130 PetriNetUnfolder]: For 7900/8154 co-relation queries the response was YES. [2022-01-19 13:19:10,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 2443 events. 846/2443 cut-off events. For 7900/8154 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 22022 event pairs, 379 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 6554. Up to 980 conditions per place. [2022-01-19 13:19:11,000 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 58 selfloop transitions, 24 changer transitions 16/241 dead transitions. [2022-01-19 13:19:11,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 241 transitions, 3330 flow [2022-01-19 13:19:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:19:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:19:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-01-19 13:19:11,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-01-19 13:19:11,002 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-01-19 13:19:11,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-01-19 13:19:11,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:11,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-01-19 13:19:11,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 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 13:19:11,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:19:11,006 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:19:11,006 INFO L186 Difference]: Start difference. First operand has 333 places, 173 transitions, 2897 flow. Second operand 16 states and 1517 transitions. [2022-01-19 13:19:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 241 transitions, 3330 flow [2022-01-19 13:19:11,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 241 transitions, 2420 flow, removed 109 selfloop flow, removed 78 redundant places. [2022-01-19 13:19:11,038 INFO L242 Difference]: Finished difference. Result has 236 places, 197 transitions, 2218 flow [2022-01-19 13:19:11,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2218, PETRI_PLACES=236, PETRI_TRANSITIONS=197} [2022-01-19 13:19:11,039 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 124 predicate places. [2022-01-19 13:19:11,039 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 197 transitions, 2218 flow [2022-01-19 13:19:11,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:11,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:11,039 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] [2022-01-19 13:19:11,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 13:19:11,040 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1310033352, now seen corresponding path program 1 times [2022-01-19 13:19:11,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817693710] [2022-01-19 13:19:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:11,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:11,117 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 13:19:11,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817693710] [2022-01-19 13:19:11,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817693710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:11,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:11,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:11,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863759782] [2022-01-19 13:19:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:11,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:11,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:11,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:11,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 197 transitions, 2218 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:11,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:11,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:11,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:11,677 INFO L129 PetriNetUnfolder]: 944/2751 cut-off events. [2022-01-19 13:19:11,677 INFO L130 PetriNetUnfolder]: For 3974/4135 co-relation queries the response was YES. [2022-01-19 13:19:11,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 2751 events. 944/2751 cut-off events. For 3974/4135 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 25738 event pairs, 389 based on Foata normal form. 2/2671 useless extension candidates. Maximal degree in co-relation 8076. Up to 1141 conditions per place. [2022-01-19 13:19:11,699 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 94 selfloop transitions, 31 changer transitions 28/296 dead transitions. [2022-01-19 13:19:11,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 296 transitions, 2896 flow [2022-01-19 13:19:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:19:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:19:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-01-19 13:19:11,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 13:19:11,701 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-01-19 13:19:11,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-01-19 13:19:11,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:11,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-01-19 13:19:11,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 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 13:19:11,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:11,706 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:11,706 INFO L186 Difference]: Start difference. First operand has 236 places, 197 transitions, 2218 flow. Second operand 24 states and 2264 transitions. [2022-01-19 13:19:11,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 296 transitions, 2896 flow [2022-01-19 13:19:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 296 transitions, 2814 flow, removed 25 selfloop flow, removed 4 redundant places. [2022-01-19 13:19:11,728 INFO L242 Difference]: Finished difference. Result has 273 places, 227 transitions, 2453 flow [2022-01-19 13:19:11,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2453, PETRI_PLACES=273, PETRI_TRANSITIONS=227} [2022-01-19 13:19:11,728 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2022-01-19 13:19:11,728 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 227 transitions, 2453 flow [2022-01-19 13:19:11,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:11,729 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:11,729 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] [2022-01-19 13:19:11,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 13:19:11,729 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:11,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1827326326, now seen corresponding path program 2 times [2022-01-19 13:19:11,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:11,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11137265] [2022-01-19 13:19:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:11,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:11,840 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 13:19:11,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:11,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11137265] [2022-01-19 13:19:11,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11137265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:11,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:11,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:11,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554782731] [2022-01-19 13:19:11,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:11,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:11,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:11,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:11,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 227 transitions, 2453 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:11,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:11,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:11,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:12,511 INFO L129 PetriNetUnfolder]: 1054/3159 cut-off events. [2022-01-19 13:19:12,511 INFO L130 PetriNetUnfolder]: For 7566/7733 co-relation queries the response was YES. [2022-01-19 13:19:12,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 3159 events. 1054/3159 cut-off events. For 7566/7733 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 30567 event pairs, 341 based on Foata normal form. 9/3084 useless extension candidates. Maximal degree in co-relation 11010. Up to 1034 conditions per place. [2022-01-19 13:19:12,556 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 110 selfloop transitions, 39 changer transitions 31/323 dead transitions. [2022-01-19 13:19:12,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 323 transitions, 3247 flow [2022-01-19 13:19:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:19:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:19:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-01-19 13:19:12,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 13:19:12,558 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-01-19 13:19:12,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-01-19 13:19:12,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:12,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-01-19 13:19:12,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 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 13:19:12,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:12,564 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:12,564 INFO L186 Difference]: Start difference. First operand has 273 places, 227 transitions, 2453 flow. Second operand 24 states and 2264 transitions. [2022-01-19 13:19:12,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 323 transitions, 3247 flow [2022-01-19 13:19:12,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 323 transitions, 3117 flow, removed 53 selfloop flow, removed 4 redundant places. [2022-01-19 13:19:12,621 INFO L242 Difference]: Finished difference. Result has 308 places, 252 transitions, 2668 flow [2022-01-19 13:19:12,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2668, PETRI_PLACES=308, PETRI_TRANSITIONS=252} [2022-01-19 13:19:12,621 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 196 predicate places. [2022-01-19 13:19:12,621 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 252 transitions, 2668 flow [2022-01-19 13:19:12,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:12,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:12,622 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] [2022-01-19 13:19:12,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 13:19:12,622 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1246184228, now seen corresponding path program 2 times [2022-01-19 13:19:12,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:12,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241164495] [2022-01-19 13:19:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:12,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:12,704 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 13:19:12,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:12,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241164495] [2022-01-19 13:19:12,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241164495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:12,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:12,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:12,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727915040] [2022-01-19 13:19:12,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:12,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:12,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:12,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 252 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:12,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:12,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:12,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:13,397 INFO L129 PetriNetUnfolder]: 1259/3678 cut-off events. [2022-01-19 13:19:13,397 INFO L130 PetriNetUnfolder]: For 11747/11905 co-relation queries the response was YES. [2022-01-19 13:19:13,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14022 conditions, 3678 events. 1259/3678 cut-off events. For 11747/11905 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 36740 event pairs, 454 based on Foata normal form. 2/3580 useless extension candidates. Maximal degree in co-relation 13937. Up to 1631 conditions per place. [2022-01-19 13:19:13,435 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 122 selfloop transitions, 45 changer transitions 24/334 dead transitions. [2022-01-19 13:19:13,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 334 transitions, 3592 flow [2022-01-19 13:19:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:19:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:19:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2071 transitions. [2022-01-19 13:19:13,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591642228739003 [2022-01-19 13:19:13,437 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2071 transitions. [2022-01-19 13:19:13,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2071 transitions. [2022-01-19 13:19:13,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:13,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2071 transitions. [2022-01-19 13:19:13,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 22 states have internal predecessors, (2071), 0 states have call successors, (0), 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 13:19:13,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:19:13,441 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:19:13,441 INFO L186 Difference]: Start difference. First operand has 308 places, 252 transitions, 2668 flow. Second operand 22 states and 2071 transitions. [2022-01-19 13:19:13,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 334 transitions, 3592 flow [2022-01-19 13:19:13,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 334 transitions, 3412 flow, removed 44 selfloop flow, removed 10 redundant places. [2022-01-19 13:19:13,508 INFO L242 Difference]: Finished difference. Result has 331 places, 283 transitions, 2937 flow [2022-01-19 13:19:13,508 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2937, PETRI_PLACES=331, PETRI_TRANSITIONS=283} [2022-01-19 13:19:13,508 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 219 predicate places. [2022-01-19 13:19:13,508 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 2937 flow [2022-01-19 13:19:13,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:13,509 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:13,509 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] [2022-01-19 13:19:13,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 13:19:13,509 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash 493663876, now seen corresponding path program 3 times [2022-01-19 13:19:13,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:13,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108418615] [2022-01-19 13:19:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:13,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:13,591 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 13:19:13,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:13,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108418615] [2022-01-19 13:19:13,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108418615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:13,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:13,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:13,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479888221] [2022-01-19 13:19:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:13,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:13,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:13,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:13,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 283 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:13,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:13,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:13,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:14,343 INFO L129 PetriNetUnfolder]: 1401/4001 cut-off events. [2022-01-19 13:19:14,343 INFO L130 PetriNetUnfolder]: For 15591/15755 co-relation queries the response was YES. [2022-01-19 13:19:14,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15828 conditions, 4001 events. 1401/4001 cut-off events. For 15591/15755 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 40099 event pairs, 466 based on Foata normal form. 3/3901 useless extension candidates. Maximal degree in co-relation 15734. Up to 1693 conditions per place. [2022-01-19 13:19:14,386 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 140 selfloop transitions, 54 changer transitions 16/353 dead transitions. [2022-01-19 13:19:14,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 353 transitions, 3851 flow [2022-01-19 13:19:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:19:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:19:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-01-19 13:19:14,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-01-19 13:19:14,388 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-01-19 13:19:14,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-01-19 13:19:14,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:14,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-01-19 13:19:14,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 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 13:19:14,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:19:14,392 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:19:14,392 INFO L186 Difference]: Start difference. First operand has 331 places, 283 transitions, 2937 flow. Second operand 16 states and 1517 transitions. [2022-01-19 13:19:14,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 353 transitions, 3851 flow [2022-01-19 13:19:14,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 353 transitions, 3689 flow, removed 81 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:14,537 INFO L242 Difference]: Finished difference. Result has 352 places, 305 transitions, 3218 flow [2022-01-19 13:19:14,537 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3218, PETRI_PLACES=352, PETRI_TRANSITIONS=305} [2022-01-19 13:19:14,537 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 240 predicate places. [2022-01-19 13:19:14,537 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 305 transitions, 3218 flow [2022-01-19 13:19:14,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:14,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:14,538 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] [2022-01-19 13:19:14,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 13:19:14,538 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1716812918, now seen corresponding path program 4 times [2022-01-19 13:19:14,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:14,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282350592] [2022-01-19 13:19:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:14,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:14,612 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 13:19:14,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:14,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282350592] [2022-01-19 13:19:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282350592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:14,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:14,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:14,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888180961] [2022-01-19 13:19:14,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:14,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:14,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:14,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:14,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 305 transitions, 3218 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:14,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:14,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:14,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:15,516 INFO L129 PetriNetUnfolder]: 1499/4320 cut-off events. [2022-01-19 13:19:15,516 INFO L130 PetriNetUnfolder]: For 19063/19230 co-relation queries the response was YES. [2022-01-19 13:19:15,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 4320 events. 1499/4320 cut-off events. For 19063/19230 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 44332 event pairs, 428 based on Foata normal form. 6/4226 useless extension candidates. Maximal degree in co-relation 17714. Up to 1423 conditions per place. [2022-01-19 13:19:15,558 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 159 selfloop transitions, 79 changer transitions 26/407 dead transitions. [2022-01-19 13:19:15,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 407 transitions, 4454 flow [2022-01-19 13:19:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:19:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:19:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2261 transitions. [2022-01-19 13:19:15,560 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759744623655914 [2022-01-19 13:19:15,560 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2261 transitions. [2022-01-19 13:19:15,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2261 transitions. [2022-01-19 13:19:15,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:15,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2261 transitions. [2022-01-19 13:19:15,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.20833333333333) internal successors, (2261), 24 states have internal predecessors, (2261), 0 states have call successors, (0), 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 13:19:15,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:15,565 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:15,565 INFO L186 Difference]: Start difference. First operand has 352 places, 305 transitions, 3218 flow. Second operand 24 states and 2261 transitions. [2022-01-19 13:19:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 407 transitions, 4454 flow [2022-01-19 13:19:15,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 407 transitions, 4116 flow, removed 143 selfloop flow, removed 5 redundant places. [2022-01-19 13:19:15,699 INFO L242 Difference]: Finished difference. Result has 387 places, 331 transitions, 3497 flow [2022-01-19 13:19:15,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3497, PETRI_PLACES=387, PETRI_TRANSITIONS=331} [2022-01-19 13:19:15,699 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 275 predicate places. [2022-01-19 13:19:15,700 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 331 transitions, 3497 flow [2022-01-19 13:19:15,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:15,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:15,700 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] [2022-01-19 13:19:15,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 13:19:15,700 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -871431556, now seen corresponding path program 5 times [2022-01-19 13:19:15,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:15,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267775849] [2022-01-19 13:19:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:15,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:15,776 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 13:19:15,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:15,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267775849] [2022-01-19 13:19:15,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267775849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:15,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:15,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:15,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247838631] [2022-01-19 13:19:15,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:15,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:15,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:15,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:15,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 331 transitions, 3497 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:15,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:15,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:15,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:16,681 INFO L129 PetriNetUnfolder]: 1557/4567 cut-off events. [2022-01-19 13:19:16,681 INFO L130 PetriNetUnfolder]: For 20699/20866 co-relation queries the response was YES. [2022-01-19 13:19:16,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19265 conditions, 4567 events. 1557/4567 cut-off events. For 20699/20866 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 47999 event pairs, 502 based on Foata normal form. 8/4459 useless extension candidates. Maximal degree in co-relation 19147. Up to 1961 conditions per place. [2022-01-19 13:19:16,747 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 156 selfloop transitions, 72 changer transitions 14/385 dead transitions. [2022-01-19 13:19:16,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 385 transitions, 4503 flow [2022-01-19 13:19:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:19:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:19:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2022-01-19 13:19:16,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2022-01-19 13:19:16,749 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2022-01-19 13:19:16,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2022-01-19 13:19:16,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:16,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2022-01-19 13:19:16,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 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 13:19:16,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:19:16,754 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:19:16,754 INFO L186 Difference]: Start difference. First operand has 387 places, 331 transitions, 3497 flow. Second operand 16 states and 1514 transitions. [2022-01-19 13:19:16,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 385 transitions, 4503 flow [2022-01-19 13:19:16,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 385 transitions, 4443 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-01-19 13:19:16,885 INFO L242 Difference]: Finished difference. Result has 405 places, 348 transitions, 3861 flow [2022-01-19 13:19:16,885 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3861, PETRI_PLACES=405, PETRI_TRANSITIONS=348} [2022-01-19 13:19:16,885 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 293 predicate places. [2022-01-19 13:19:16,885 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 348 transitions, 3861 flow [2022-01-19 13:19:16,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:16,886 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:16,886 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] [2022-01-19 13:19:16,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 13:19:16,886 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:16,886 INFO L85 PathProgramCache]: Analyzing trace with hash -203294644, now seen corresponding path program 6 times [2022-01-19 13:19:16,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:16,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142231791] [2022-01-19 13:19:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:16,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:16,958 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 13:19:16,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:16,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142231791] [2022-01-19 13:19:16,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142231791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:16,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:16,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:16,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821047894] [2022-01-19 13:19:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:16,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:16,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:16,961 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:16,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 348 transitions, 3861 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:16,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:16,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:16,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:18,055 INFO L129 PetriNetUnfolder]: 1814/5340 cut-off events. [2022-01-19 13:19:18,056 INFO L130 PetriNetUnfolder]: For 37678/37845 co-relation queries the response was YES. [2022-01-19 13:19:18,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 5340 events. 1814/5340 cut-off events. For 37678/37845 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 57768 event pairs, 572 based on Foata normal form. 4/5222 useless extension candidates. Maximal degree in co-relation 24495. Up to 1958 conditions per place. [2022-01-19 13:19:18,134 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 187 selfloop transitions, 74 changer transitions 22/426 dead transitions. [2022-01-19 13:19:18,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 426 transitions, 5372 flow [2022-01-19 13:19:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:19:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:19:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2022-01-19 13:19:18,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616935483870968 [2022-01-19 13:19:18,136 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2022-01-19 13:19:18,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2022-01-19 13:19:18,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:18,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2022-01-19 13:19:18,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 0 states have call successors, (0), 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 13:19:18,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:19:18,140 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:19:18,140 INFO L186 Difference]: Start difference. First operand has 405 places, 348 transitions, 3861 flow. Second operand 20 states and 1889 transitions. [2022-01-19 13:19:18,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 426 transitions, 5372 flow [2022-01-19 13:19:18,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 426 transitions, 5228 flow, removed 58 selfloop flow, removed 3 redundant places. [2022-01-19 13:19:18,337 INFO L242 Difference]: Finished difference. Result has 434 places, 381 transitions, 4580 flow [2022-01-19 13:19:18,337 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3760, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4580, PETRI_PLACES=434, PETRI_TRANSITIONS=381} [2022-01-19 13:19:18,338 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 322 predicate places. [2022-01-19 13:19:18,338 INFO L470 AbstractCegarLoop]: Abstraction has has 434 places, 381 transitions, 4580 flow [2022-01-19 13:19:18,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:18,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:18,338 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] [2022-01-19 13:19:18,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 13:19:18,339 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:18,339 INFO L85 PathProgramCache]: Analyzing trace with hash -466981080, now seen corresponding path program 7 times [2022-01-19 13:19:18,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:18,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547020439] [2022-01-19 13:19:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:18,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:18,421 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 13:19:18,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:18,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547020439] [2022-01-19 13:19:18,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547020439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:18,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:18,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:18,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332186071] [2022-01-19 13:19:18,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:18,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:18,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:18,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:18,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 381 transitions, 4580 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:18,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:18,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:18,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:19,694 INFO L129 PetriNetUnfolder]: 1901/5615 cut-off events. [2022-01-19 13:19:19,694 INFO L130 PetriNetUnfolder]: For 50739/50919 co-relation queries the response was YES. [2022-01-19 13:19:19,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 5615 events. 1901/5615 cut-off events. For 50739/50919 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 61886 event pairs, 544 based on Foata normal form. 4/5486 useless extension candidates. Maximal degree in co-relation 27831. Up to 2201 conditions per place. [2022-01-19 13:19:19,788 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 203 selfloop transitions, 91 changer transitions 19/456 dead transitions. [2022-01-19 13:19:19,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 456 transitions, 6177 flow [2022-01-19 13:19:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:19:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:19:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1885 transitions. [2022-01-19 13:19:19,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-01-19 13:19:19,790 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1885 transitions. [2022-01-19 13:19:19,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1885 transitions. [2022-01-19 13:19:19,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:19,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1885 transitions. [2022-01-19 13:19:19,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 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 13:19:19,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:19:19,794 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:19:19,794 INFO L186 Difference]: Start difference. First operand has 434 places, 381 transitions, 4580 flow. Second operand 20 states and 1885 transitions. [2022-01-19 13:19:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 456 transitions, 6177 flow [2022-01-19 13:19:20,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 456 transitions, 5715 flow, removed 231 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:20,108 INFO L242 Difference]: Finished difference. Result has 464 places, 414 transitions, 5148 flow [2022-01-19 13:19:20,108 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5148, PETRI_PLACES=464, PETRI_TRANSITIONS=414} [2022-01-19 13:19:20,108 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 352 predicate places. [2022-01-19 13:19:20,108 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 414 transitions, 5148 flow [2022-01-19 13:19:20,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:20,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:20,109 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] [2022-01-19 13:19:20,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 13:19:20,109 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2069386238, now seen corresponding path program 8 times [2022-01-19 13:19:20,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:20,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45162031] [2022-01-19 13:19:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:20,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:20,187 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 13:19:20,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45162031] [2022-01-19 13:19:20,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45162031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:20,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:20,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:20,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504553861] [2022-01-19 13:19:20,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:20,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:20,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:20,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:20,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:20,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 414 transitions, 5148 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:20,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:20,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:20,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:21,453 INFO L129 PetriNetUnfolder]: 1900/5624 cut-off events. [2022-01-19 13:19:21,454 INFO L130 PetriNetUnfolder]: For 45964/46167 co-relation queries the response was YES. [2022-01-19 13:19:21,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27980 conditions, 5624 events. 1900/5624 cut-off events. For 45964/46167 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 61629 event pairs, 522 based on Foata normal form. 14/5514 useless extension candidates. Maximal degree in co-relation 27829. Up to 2190 conditions per place. [2022-01-19 13:19:21,540 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 190 selfloop transitions, 107 changer transitions 23/463 dead transitions. [2022-01-19 13:19:21,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 463 transitions, 6407 flow [2022-01-19 13:19:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:19:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:19:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-01-19 13:19:21,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-01-19 13:19:21,542 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-01-19 13:19:21,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-01-19 13:19:21,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:21,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-01-19 13:19:21,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 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 13:19:21,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:21,546 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:21,546 INFO L186 Difference]: Start difference. First operand has 464 places, 414 transitions, 5148 flow. Second operand 18 states and 1699 transitions. [2022-01-19 13:19:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 463 transitions, 6407 flow [2022-01-19 13:19:21,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 463 transitions, 6061 flow, removed 173 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:21,983 INFO L242 Difference]: Finished difference. Result has 484 places, 423 transitions, 5357 flow [2022-01-19 13:19:21,983 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5357, PETRI_PLACES=484, PETRI_TRANSITIONS=423} [2022-01-19 13:19:21,983 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 372 predicate places. [2022-01-19 13:19:21,983 INFO L470 AbstractCegarLoop]: Abstraction has has 484 places, 423 transitions, 5357 flow [2022-01-19 13:19:21,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:21,984 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:21,984 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] [2022-01-19 13:19:21,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 13:19:21,984 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -6694178, now seen corresponding path program 9 times [2022-01-19 13:19:21,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:21,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586827933] [2022-01-19 13:19:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:21,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:22,076 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 13:19:22,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:22,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586827933] [2022-01-19 13:19:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586827933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:22,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:22,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:22,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931162839] [2022-01-19 13:19:22,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:22,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:22,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:22,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:22,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 423 transitions, 5357 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:22,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:22,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:22,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:23,413 INFO L129 PetriNetUnfolder]: 2022/5985 cut-off events. [2022-01-19 13:19:23,413 INFO L130 PetriNetUnfolder]: For 40196/40399 co-relation queries the response was YES. [2022-01-19 13:19:23,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29780 conditions, 5985 events. 2022/5985 cut-off events. For 40196/40399 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 66539 event pairs, 561 based on Foata normal form. 8/5857 useless extension candidates. Maximal degree in co-relation 29623. Up to 2284 conditions per place. [2022-01-19 13:19:23,513 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 220 selfloop transitions, 104 changer transitions 16/483 dead transitions. [2022-01-19 13:19:23,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 483 transitions, 6755 flow [2022-01-19 13:19:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:19:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:19:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-01-19 13:19:23,515 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-01-19 13:19:23,515 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-01-19 13:19:23,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-01-19 13:19:23,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:23,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-01-19 13:19:23,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 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 13:19:23,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:23,518 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:23,518 INFO L186 Difference]: Start difference. First operand has 484 places, 423 transitions, 5357 flow. Second operand 17 states and 1610 transitions. [2022-01-19 13:19:23,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 483 transitions, 6755 flow [2022-01-19 13:19:23,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 483 transitions, 6637 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-01-19 13:19:23,797 INFO L242 Difference]: Finished difference. Result has 501 places, 445 transitions, 5945 flow [2022-01-19 13:19:23,797 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5945, PETRI_PLACES=501, PETRI_TRANSITIONS=445} [2022-01-19 13:19:23,797 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 389 predicate places. [2022-01-19 13:19:23,797 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 445 transitions, 5945 flow [2022-01-19 13:19:23,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:23,798 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:23,798 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] [2022-01-19 13:19:23,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 13:19:23,798 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1085284942, now seen corresponding path program 10 times [2022-01-19 13:19:23,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:23,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140311962] [2022-01-19 13:19:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:23,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:23,878 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 13:19:23,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:23,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140311962] [2022-01-19 13:19:23,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140311962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:23,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:23,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:23,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729031958] [2022-01-19 13:19:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:23,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:23,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:23,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:23,880 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:23,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 445 transitions, 5945 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:23,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:23,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:23,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:25,367 INFO L129 PetriNetUnfolder]: 2103/6267 cut-off events. [2022-01-19 13:19:25,367 INFO L130 PetriNetUnfolder]: For 47136/47336 co-relation queries the response was YES. [2022-01-19 13:19:25,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32504 conditions, 6267 events. 2103/6267 cut-off events. For 47136/47336 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 70116 event pairs, 550 based on Foata normal form. 4/6134 useless extension candidates. Maximal degree in co-relation 32342. Up to 2210 conditions per place. [2022-01-19 13:19:25,459 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 244 selfloop transitions, 103 changer transitions 23/513 dead transitions. [2022-01-19 13:19:25,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 513 transitions, 7565 flow [2022-01-19 13:19:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:19:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:19:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2022-01-19 13:19:25,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2022-01-19 13:19:25,461 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2022-01-19 13:19:25,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2022-01-19 13:19:25,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:25,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2022-01-19 13:19:25,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 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 13:19:25,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:19:25,464 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:19:25,464 INFO L186 Difference]: Start difference. First operand has 501 places, 445 transitions, 5945 flow. Second operand 21 states and 1982 transitions. [2022-01-19 13:19:25,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 513 transitions, 7565 flow [2022-01-19 13:19:25,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 513 transitions, 7397 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:25,806 INFO L242 Difference]: Finished difference. Result has 531 places, 470 transitions, 6629 flow [2022-01-19 13:19:25,806 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5781, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6629, PETRI_PLACES=531, PETRI_TRANSITIONS=470} [2022-01-19 13:19:25,807 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 419 predicate places. [2022-01-19 13:19:25,807 INFO L470 AbstractCegarLoop]: Abstraction has has 531 places, 470 transitions, 6629 flow [2022-01-19 13:19:25,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:25,807 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:25,807 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] [2022-01-19 13:19:25,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 13:19:25,807 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash -776227570, now seen corresponding path program 11 times [2022-01-19 13:19:25,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905997924] [2022-01-19 13:19:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:25,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:25,880 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 13:19:25,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:25,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905997924] [2022-01-19 13:19:25,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905997924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:25,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:25,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:25,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069786261] [2022-01-19 13:19:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:25,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:25,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:25,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:25,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 470 transitions, 6629 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:25,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:25,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:25,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:27,460 INFO L129 PetriNetUnfolder]: 2143/6487 cut-off events. [2022-01-19 13:19:27,461 INFO L130 PetriNetUnfolder]: For 54356/54570 co-relation queries the response was YES. [2022-01-19 13:19:27,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34619 conditions, 6487 events. 2143/6487 cut-off events. For 54356/54570 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 73400 event pairs, 565 based on Foata normal form. 4/6351 useless extension candidates. Maximal degree in co-relation 34444. Up to 2457 conditions per place. [2022-01-19 13:19:27,757 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 229 selfloop transitions, 122 changer transitions 20/514 dead transitions. [2022-01-19 13:19:27,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 514 transitions, 7866 flow [2022-01-19 13:19:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:19:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:19:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1700 transitions. [2022-01-19 13:19:27,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616487455197133 [2022-01-19 13:19:27,759 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1700 transitions. [2022-01-19 13:19:27,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1700 transitions. [2022-01-19 13:19:27,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:27,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1700 transitions. [2022-01-19 13:19:27,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.44444444444444) internal successors, (1700), 18 states have internal predecessors, (1700), 0 states have call successors, (0), 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 13:19:27,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:27,763 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:27,763 INFO L186 Difference]: Start difference. First operand has 531 places, 470 transitions, 6629 flow. Second operand 18 states and 1700 transitions. [2022-01-19 13:19:27,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 514 transitions, 7866 flow [2022-01-19 13:19:28,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 514 transitions, 7592 flow, removed 137 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:28,118 INFO L242 Difference]: Finished difference. Result has 551 places, 483 transitions, 6927 flow [2022-01-19 13:19:28,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6927, PETRI_PLACES=551, PETRI_TRANSITIONS=483} [2022-01-19 13:19:28,119 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 439 predicate places. [2022-01-19 13:19:28,119 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 483 transitions, 6927 flow [2022-01-19 13:19:28,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:28,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:28,119 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] [2022-01-19 13:19:28,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 13:19:28,120 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:28,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:28,120 INFO L85 PathProgramCache]: Analyzing trace with hash -499431268, now seen corresponding path program 12 times [2022-01-19 13:19:28,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941586090] [2022-01-19 13:19:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:28,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:28,204 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 13:19:28,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:28,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941586090] [2022-01-19 13:19:28,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941586090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:28,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:28,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:28,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348355725] [2022-01-19 13:19:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:28,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:28,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:28,207 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:28,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 483 transitions, 6927 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:28,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:28,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:28,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:29,869 INFO L129 PetriNetUnfolder]: 2191/6703 cut-off events. [2022-01-19 13:19:29,870 INFO L130 PetriNetUnfolder]: For 55213/55420 co-relation queries the response was YES. [2022-01-19 13:19:29,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36007 conditions, 6703 events. 2191/6703 cut-off events. For 55213/55420 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 77142 event pairs, 572 based on Foata normal form. 8/6577 useless extension candidates. Maximal degree in co-relation 35826. Up to 2521 conditions per place. [2022-01-19 13:19:29,999 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 257 selfloop transitions, 117 changer transitions 15/532 dead transitions. [2022-01-19 13:19:30,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 532 transitions, 8375 flow [2022-01-19 13:19:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:19:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:19:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-01-19 13:19:30,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-01-19 13:19:30,001 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-01-19 13:19:30,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-01-19 13:19:30,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:30,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-01-19 13:19:30,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 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 13:19:30,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:30,005 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:30,005 INFO L186 Difference]: Start difference. First operand has 551 places, 483 transitions, 6927 flow. Second operand 17 states and 1610 transitions. [2022-01-19 13:19:30,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 532 transitions, 8375 flow [2022-01-19 13:19:30,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 532 transitions, 8213 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-01-19 13:19:30,443 INFO L242 Difference]: Finished difference. Result has 568 places, 502 transitions, 7500 flow [2022-01-19 13:19:30,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6777, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7500, PETRI_PLACES=568, PETRI_TRANSITIONS=502} [2022-01-19 13:19:30,443 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 456 predicate places. [2022-01-19 13:19:30,443 INFO L470 AbstractCegarLoop]: Abstraction has has 568 places, 502 transitions, 7500 flow [2022-01-19 13:19:30,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:30,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:30,444 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] [2022-01-19 13:19:30,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 13:19:30,444 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1820934362, now seen corresponding path program 13 times [2022-01-19 13:19:30,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:30,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116309467] [2022-01-19 13:19:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:30,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:30,517 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 13:19:30,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:30,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116309467] [2022-01-19 13:19:30,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116309467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:30,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:30,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:30,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102766653] [2022-01-19 13:19:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:30,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:30,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:30,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:30,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 502 transitions, 7500 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:30,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:30,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:30,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:32,486 INFO L129 PetriNetUnfolder]: 2187/6776 cut-off events. [2022-01-19 13:19:32,486 INFO L130 PetriNetUnfolder]: For 58135/58344 co-relation queries the response was YES. [2022-01-19 13:19:32,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36623 conditions, 6776 events. 2187/6776 cut-off events. For 58135/58344 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 78255 event pairs, 568 based on Foata normal form. 8/6651 useless extension candidates. Maximal degree in co-relation 36437. Up to 2503 conditions per place. [2022-01-19 13:19:32,598 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 254 selfloop transitions, 119 changer transitions 24/540 dead transitions. [2022-01-19 13:19:32,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 540 transitions, 8691 flow [2022-01-19 13:19:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:19:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:19:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1704 transitions. [2022-01-19 13:19:32,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2022-01-19 13:19:32,600 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1704 transitions. [2022-01-19 13:19:32,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1704 transitions. [2022-01-19 13:19:32,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:32,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1704 transitions. [2022-01-19 13:19:32,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.66666666666667) internal successors, (1704), 18 states have internal predecessors, (1704), 0 states have call successors, (0), 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 13:19:32,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:32,603 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:32,603 INFO L186 Difference]: Start difference. First operand has 568 places, 502 transitions, 7500 flow. Second operand 18 states and 1704 transitions. [2022-01-19 13:19:32,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 540 transitions, 8691 flow [2022-01-19 13:19:33,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 540 transitions, 8452 flow, removed 91 selfloop flow, removed 4 redundant places. [2022-01-19 13:19:33,052 INFO L242 Difference]: Finished difference. Result has 584 places, 509 transitions, 7736 flow [2022-01-19 13:19:33,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7285, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7736, PETRI_PLACES=584, PETRI_TRANSITIONS=509} [2022-01-19 13:19:33,053 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 472 predicate places. [2022-01-19 13:19:33,053 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 509 transitions, 7736 flow [2022-01-19 13:19:33,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:33,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:33,053 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] [2022-01-19 13:19:33,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 13:19:33,053 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash -238388428, now seen corresponding path program 14 times [2022-01-19 13:19:33,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:33,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246712585] [2022-01-19 13:19:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:33,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:33,132 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 13:19:33,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:33,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246712585] [2022-01-19 13:19:33,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246712585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:33,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:33,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:33,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772467549] [2022-01-19 13:19:33,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:33,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:33,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:33,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:33,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:33,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 509 transitions, 7736 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:33,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:33,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:33,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:35,166 INFO L129 PetriNetUnfolder]: 2314/7189 cut-off events. [2022-01-19 13:19:35,166 INFO L130 PetriNetUnfolder]: For 65052/65261 co-relation queries the response was YES. [2022-01-19 13:19:35,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38786 conditions, 7189 events. 2314/7189 cut-off events. For 65052/65261 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 84179 event pairs, 546 based on Foata normal form. 12/7076 useless extension candidates. Maximal degree in co-relation 38598. Up to 2400 conditions per place. [2022-01-19 13:19:35,330 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 256 selfloop transitions, 156 changer transitions 23/578 dead transitions. [2022-01-19 13:19:35,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 578 transitions, 9355 flow [2022-01-19 13:19:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:19:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:19:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2069 transitions. [2022-01-19 13:19:35,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584310850439883 [2022-01-19 13:19:35,332 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2069 transitions. [2022-01-19 13:19:35,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2069 transitions. [2022-01-19 13:19:35,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:35,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2069 transitions. [2022-01-19 13:19:35,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.04545454545455) internal successors, (2069), 22 states have internal predecessors, (2069), 0 states have call successors, (0), 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 13:19:35,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:19:35,336 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:19:35,336 INFO L186 Difference]: Start difference. First operand has 584 places, 509 transitions, 7736 flow. Second operand 22 states and 2069 transitions. [2022-01-19 13:19:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 578 transitions, 9355 flow [2022-01-19 13:19:35,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 578 transitions, 9196 flow, removed 66 selfloop flow, removed 8 redundant places. [2022-01-19 13:19:35,871 INFO L242 Difference]: Finished difference. Result has 609 places, 537 transitions, 8448 flow [2022-01-19 13:19:35,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8448, PETRI_PLACES=609, PETRI_TRANSITIONS=537} [2022-01-19 13:19:35,871 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 497 predicate places. [2022-01-19 13:19:35,872 INFO L470 AbstractCegarLoop]: Abstraction has has 609 places, 537 transitions, 8448 flow [2022-01-19 13:19:35,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:35,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:35,872 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] [2022-01-19 13:19:35,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 13:19:35,872 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1075834156, now seen corresponding path program 15 times [2022-01-19 13:19:35,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:35,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863030477] [2022-01-19 13:19:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:35,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:35,973 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 13:19:35,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:35,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863030477] [2022-01-19 13:19:35,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863030477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:35,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:35,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:35,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766924080] [2022-01-19 13:19:35,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:35,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:35,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:35,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:35,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 537 transitions, 8448 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:35,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:35,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:35,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:38,097 INFO L129 PetriNetUnfolder]: 2389/7470 cut-off events. [2022-01-19 13:19:38,097 INFO L130 PetriNetUnfolder]: For 70964/71173 co-relation queries the response was YES. [2022-01-19 13:19:38,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41656 conditions, 7470 events. 2389/7470 cut-off events. For 70964/71173 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 88349 event pairs, 557 based on Foata normal form. 9/7347 useless extension candidates. Maximal degree in co-relation 41461. Up to 2475 conditions per place. [2022-01-19 13:19:38,233 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 327 selfloop transitions, 110 changer transitions 21/601 dead transitions. [2022-01-19 13:19:38,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 601 transitions, 10233 flow [2022-01-19 13:19:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:19:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:19:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1979 transitions. [2022-01-19 13:19:38,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599846390168971 [2022-01-19 13:19:38,460 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1979 transitions. [2022-01-19 13:19:38,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1979 transitions. [2022-01-19 13:19:38,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:38,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1979 transitions. [2022-01-19 13:19:38,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.23809523809524) internal successors, (1979), 21 states have internal predecessors, (1979), 0 states have call successors, (0), 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 13:19:38,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:19:38,464 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:19:38,464 INFO L186 Difference]: Start difference. First operand has 609 places, 537 transitions, 8448 flow. Second operand 21 states and 1979 transitions. [2022-01-19 13:19:38,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 601 transitions, 10233 flow [2022-01-19 13:19:38,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 601 transitions, 10143 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:38,992 INFO L242 Difference]: Finished difference. Result has 639 places, 563 transitions, 9272 flow [2022-01-19 13:19:38,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8360, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9272, PETRI_PLACES=639, PETRI_TRANSITIONS=563} [2022-01-19 13:19:38,993 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 527 predicate places. [2022-01-19 13:19:38,993 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 563 transitions, 9272 flow [2022-01-19 13:19:38,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:38,993 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:38,993 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] [2022-01-19 13:19:38,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 13:19:38,994 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash -537173466, now seen corresponding path program 16 times [2022-01-19 13:19:38,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:38,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066832937] [2022-01-19 13:19:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:38,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:39,061 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 13:19:39,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:39,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066832937] [2022-01-19 13:19:39,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066832937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:39,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:39,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:39,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051942667] [2022-01-19 13:19:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:39,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:39,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:39,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:39,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 563 transitions, 9272 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:39,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:39,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:39,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:41,166 INFO L129 PetriNetUnfolder]: 2390/7539 cut-off events. [2022-01-19 13:19:41,166 INFO L130 PetriNetUnfolder]: For 78318/78530 co-relation queries the response was YES. [2022-01-19 13:19:41,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43147 conditions, 7539 events. 2390/7539 cut-off events. For 78318/78530 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 89038 event pairs, 557 based on Foata normal form. 12/7424 useless extension candidates. Maximal degree in co-relation 42939. Up to 2577 conditions per place. [2022-01-19 13:19:41,307 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 273 selfloop transitions, 166 changer transitions 23/605 dead transitions. [2022-01-19 13:19:41,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 605 transitions, 10624 flow [2022-01-19 13:19:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:19:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:19:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-01-19 13:19:41,308 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-01-19 13:19:41,308 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-01-19 13:19:41,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-01-19 13:19:41,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:41,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-01-19 13:19:41,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 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 13:19:41,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:41,312 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:41,312 INFO L186 Difference]: Start difference. First operand has 639 places, 563 transitions, 9272 flow. Second operand 18 states and 1699 transitions. [2022-01-19 13:19:41,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 605 transitions, 10624 flow [2022-01-19 13:19:41,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 605 transitions, 10414 flow, removed 105 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:41,933 INFO L242 Difference]: Finished difference. Result has 659 places, 572 transitions, 9629 flow [2022-01-19 13:19:41,934 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9064, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9629, PETRI_PLACES=659, PETRI_TRANSITIONS=572} [2022-01-19 13:19:41,934 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 547 predicate places. [2022-01-19 13:19:41,934 INFO L470 AbstractCegarLoop]: Abstraction has has 659 places, 572 transitions, 9629 flow [2022-01-19 13:19:41,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:41,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:41,935 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] [2022-01-19 13:19:41,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 13:19:41,935 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash 260532618, now seen corresponding path program 17 times [2022-01-19 13:19:41,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:41,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501614369] [2022-01-19 13:19:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:41,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:42,014 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 13:19:42,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:42,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501614369] [2022-01-19 13:19:42,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501614369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:42,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:42,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:42,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141706266] [2022-01-19 13:19:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:42,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:42,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:42,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:42,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 572 transitions, 9629 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:42,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:42,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:42,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:44,510 INFO L129 PetriNetUnfolder]: 2508/7920 cut-off events. [2022-01-19 13:19:44,511 INFO L130 PetriNetUnfolder]: For 84985/85197 co-relation queries the response was YES. [2022-01-19 13:19:44,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46478 conditions, 7920 events. 2508/7920 cut-off events. For 84985/85197 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 95020 event pairs, 581 based on Foata normal form. 9/7785 useless extension candidates. Maximal degree in co-relation 46264. Up to 2659 conditions per place. [2022-01-19 13:19:44,663 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 331 selfloop transitions, 135 changer transitions 16/625 dead transitions. [2022-01-19 13:19:44,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 625 transitions, 11329 flow [2022-01-19 13:19:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:19:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:19:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1609 transitions. [2022-01-19 13:19:44,665 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632827324478179 [2022-01-19 13:19:44,665 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1609 transitions. [2022-01-19 13:19:44,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1609 transitions. [2022-01-19 13:19:44,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:44,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1609 transitions. [2022-01-19 13:19:44,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.6470588235294) internal successors, (1609), 17 states have internal predecessors, (1609), 0 states have call successors, (0), 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 13:19:44,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:44,669 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:44,669 INFO L186 Difference]: Start difference. First operand has 659 places, 572 transitions, 9629 flow. Second operand 17 states and 1609 transitions. [2022-01-19 13:19:44,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 625 transitions, 11329 flow [2022-01-19 13:19:45,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 625 transitions, 11077 flow, removed 48 selfloop flow, removed 6 redundant places. [2022-01-19 13:19:45,367 INFO L242 Difference]: Finished difference. Result has 675 places, 594 transitions, 10233 flow [2022-01-19 13:19:45,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9391, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10233, PETRI_PLACES=675, PETRI_TRANSITIONS=594} [2022-01-19 13:19:45,367 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 563 predicate places. [2022-01-19 13:19:45,367 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 594 transitions, 10233 flow [2022-01-19 13:19:45,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:45,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:45,368 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] [2022-01-19 13:19:45,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 13:19:45,368 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash -718975862, now seen corresponding path program 18 times [2022-01-19 13:19:45,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:45,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299093022] [2022-01-19 13:19:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:45,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:45,439 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 13:19:45,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:45,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299093022] [2022-01-19 13:19:45,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299093022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:45,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:45,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:45,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966853400] [2022-01-19 13:19:45,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:45,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:45,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:45,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:45,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 594 transitions, 10233 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:45,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:45,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:45,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:47,922 INFO L129 PetriNetUnfolder]: 2590/8147 cut-off events. [2022-01-19 13:19:47,922 INFO L130 PetriNetUnfolder]: For 92177/92385 co-relation queries the response was YES. [2022-01-19 13:19:48,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49479 conditions, 8147 events. 2590/8147 cut-off events. For 92177/92385 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 97916 event pairs, 597 based on Foata normal form. 9/8012 useless extension candidates. Maximal degree in co-relation 49260. Up to 2754 conditions per place. [2022-01-19 13:19:48,057 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 357 selfloop transitions, 130 changer transitions 17/647 dead transitions. [2022-01-19 13:19:48,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 647 transitions, 11998 flow [2022-01-19 13:19:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:19:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:19:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2022-01-19 13:19:48,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2022-01-19 13:19:48,059 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2022-01-19 13:19:48,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2022-01-19 13:19:48,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:48,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2022-01-19 13:19:48,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 0 states have call successors, (0), 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 13:19:48,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:48,062 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:19:48,062 INFO L186 Difference]: Start difference. First operand has 675 places, 594 transitions, 10233 flow. Second operand 17 states and 1613 transitions. [2022-01-19 13:19:48,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 647 transitions, 11998 flow [2022-01-19 13:19:48,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 647 transitions, 11818 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:48,786 INFO L242 Difference]: Finished difference. Result has 695 places, 616 transitions, 10914 flow [2022-01-19 13:19:48,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10059, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10914, PETRI_PLACES=695, PETRI_TRANSITIONS=616} [2022-01-19 13:19:48,787 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 583 predicate places. [2022-01-19 13:19:48,787 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 616 transitions, 10914 flow [2022-01-19 13:19:48,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:48,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:48,787 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] [2022-01-19 13:19:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 13:19:48,787 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2127790576, now seen corresponding path program 19 times [2022-01-19 13:19:48,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:48,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211007063] [2022-01-19 13:19:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:48,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:48,860 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 13:19:48,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:48,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211007063] [2022-01-19 13:19:48,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211007063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:48,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:48,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:48,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390325861] [2022-01-19 13:19:48,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:48,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:48,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:48,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:48,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:48,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:48,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 616 transitions, 10914 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:48,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:48,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:48,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:51,203 INFO L129 PetriNetUnfolder]: 2604/8307 cut-off events. [2022-01-19 13:19:51,203 INFO L130 PetriNetUnfolder]: For 96572/96780 co-relation queries the response was YES. [2022-01-19 13:19:51,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50823 conditions, 8307 events. 2604/8307 cut-off events. For 96572/96780 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 100697 event pairs, 595 based on Foata normal form. 9/8172 useless extension candidates. Maximal degree in co-relation 50597. Up to 2768 conditions per place. [2022-01-19 13:19:51,376 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 354 selfloop transitions, 135 changer transitions 21/653 dead transitions. [2022-01-19 13:19:51,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 653 transitions, 12363 flow [2022-01-19 13:19:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:19:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:19:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-01-19 13:19:51,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-01-19 13:19:51,377 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-01-19 13:19:51,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-01-19 13:19:51,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:51,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-01-19 13:19:51,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 13:19:51,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:51,380 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:51,380 INFO L186 Difference]: Start difference. First operand has 695 places, 616 transitions, 10914 flow. Second operand 18 states and 1703 transitions. [2022-01-19 13:19:51,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 653 transitions, 12363 flow [2022-01-19 13:19:52,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 653 transitions, 12089 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-01-19 13:19:52,203 INFO L242 Difference]: Finished difference. Result has 711 places, 625 transitions, 11201 flow [2022-01-19 13:19:52,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10674, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11201, PETRI_PLACES=711, PETRI_TRANSITIONS=625} [2022-01-19 13:19:52,203 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 599 predicate places. [2022-01-19 13:19:52,204 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 625 transitions, 11201 flow [2022-01-19 13:19:52,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:52,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:52,204 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] [2022-01-19 13:19:52,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 13:19:52,204 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1827453946, now seen corresponding path program 20 times [2022-01-19 13:19:52,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722607999] [2022-01-19 13:19:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:52,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:52,279 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 13:19:52,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:52,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722607999] [2022-01-19 13:19:52,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722607999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:52,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:52,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:52,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079351805] [2022-01-19 13:19:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:52,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:52,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:52,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:52,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 625 transitions, 11201 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:52,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:52,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:52,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:54,732 INFO L129 PetriNetUnfolder]: 2604/8307 cut-off events. [2022-01-19 13:19:54,732 INFO L130 PetriNetUnfolder]: For 97908/98116 co-relation queries the response was YES. [2022-01-19 13:19:54,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50610 conditions, 8307 events. 2604/8307 cut-off events. For 97908/98116 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 100661 event pairs, 593 based on Foata normal form. 9/8176 useless extension candidates. Maximal degree in co-relation 50382. Up to 2787 conditions per place. [2022-01-19 13:19:54,878 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 73 selfloop transitions, 0 changer transitions 477/659 dead transitions. [2022-01-19 13:19:54,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 659 transitions, 12525 flow [2022-01-19 13:19:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:19:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:19:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-01-19 13:19:54,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-01-19 13:19:54,880 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-01-19 13:19:54,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-01-19 13:19:54,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:54,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-01-19 13:19:54,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 13:19:54,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:54,882 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:19:54,882 INFO L186 Difference]: Start difference. First operand has 711 places, 625 transitions, 11201 flow. Second operand 18 states and 1703 transitions. [2022-01-19 13:19:54,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 659 transitions, 12525 flow [2022-01-19 13:19:55,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 659 transitions, 12327 flow, removed 66 selfloop flow, removed 17 redundant places. [2022-01-19 13:19:55,652 INFO L242 Difference]: Finished difference. Result has 712 places, 182 transitions, 1659 flow [2022-01-19 13:19:55,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11005, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1659, PETRI_PLACES=712, PETRI_TRANSITIONS=182} [2022-01-19 13:19:55,653 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 600 predicate places. [2022-01-19 13:19:55,653 INFO L470 AbstractCegarLoop]: Abstraction has has 712 places, 182 transitions, 1659 flow [2022-01-19 13:19:55,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:55,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:55,653 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] [2022-01-19 13:19:55,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 13:19:55,653 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash -579562400, now seen corresponding path program 3 times [2022-01-19 13:19:55,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:55,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471282201] [2022-01-19 13:19:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:55,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:55,737 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 13:19:55,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471282201] [2022-01-19 13:19:55,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471282201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:55,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:55,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:55,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679852929] [2022-01-19 13:19:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:55,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:55,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:55,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:55,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:55,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:55,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 182 transitions, 1659 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:55,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:55,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:55,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:56,443 INFO L129 PetriNetUnfolder]: 791/2407 cut-off events. [2022-01-19 13:19:56,443 INFO L130 PetriNetUnfolder]: For 7505/7582 co-relation queries the response was YES. [2022-01-19 13:19:56,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 2407 events. 791/2407 cut-off events. For 7505/7582 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 22332 event pairs, 104 based on Foata normal form. 6/2373 useless extension candidates. Maximal degree in co-relation 9062. Up to 494 conditions per place. [2022-01-19 13:19:56,477 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 82 selfloop transitions, 51 changer transitions 24/266 dead transitions. [2022-01-19 13:19:56,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 266 transitions, 2600 flow [2022-01-19 13:19:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:19:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:19:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2065 transitions. [2022-01-19 13:19:56,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7569648093841642 [2022-01-19 13:19:56,478 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2065 transitions. [2022-01-19 13:19:56,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2065 transitions. [2022-01-19 13:19:56,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:56,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2065 transitions. [2022-01-19 13:19:56,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 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 13:19:56,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:19:56,481 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:19:56,481 INFO L186 Difference]: Start difference. First operand has 712 places, 182 transitions, 1659 flow. Second operand 22 states and 2065 transitions. [2022-01-19 13:19:56,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 266 transitions, 2600 flow [2022-01-19 13:19:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 266 transitions, 2353 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-01-19 13:19:56,525 INFO L242 Difference]: Finished difference. Result has 394 places, 213 transitions, 1943 flow [2022-01-19 13:19:56,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1943, PETRI_PLACES=394, PETRI_TRANSITIONS=213} [2022-01-19 13:19:56,525 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 282 predicate places. [2022-01-19 13:19:56,525 INFO L470 AbstractCegarLoop]: Abstraction has has 394 places, 213 transitions, 1943 flow [2022-01-19 13:19:56,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:56,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:56,526 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] [2022-01-19 13:19:56,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 13:19:56,526 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1573834650, now seen corresponding path program 4 times [2022-01-19 13:19:56,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:56,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565210621] [2022-01-19 13:19:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:56,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:56,606 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 13:19:56,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:56,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565210621] [2022-01-19 13:19:56,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565210621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:56,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:56,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:56,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454215494] [2022-01-19 13:19:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:56,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:56,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:56,608 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:56,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 213 transitions, 1943 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:56,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:56,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:56,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:57,344 INFO L129 PetriNetUnfolder]: 1037/3129 cut-off events. [2022-01-19 13:19:57,344 INFO L130 PetriNetUnfolder]: For 18491/18574 co-relation queries the response was YES. [2022-01-19 13:19:57,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14533 conditions, 3129 events. 1037/3129 cut-off events. For 18491/18574 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 30448 event pairs, 192 based on Foata normal form. 5/3089 useless extension candidates. Maximal degree in co-relation 14335. Up to 744 conditions per place. [2022-01-19 13:19:57,398 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 106 selfloop transitions, 55 changer transitions 23/293 dead transitions. [2022-01-19 13:19:57,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 293 transitions, 3057 flow [2022-01-19 13:19:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:19:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:19:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1976 transitions. [2022-01-19 13:19:57,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588325652841782 [2022-01-19 13:19:57,400 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1976 transitions. [2022-01-19 13:19:57,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1976 transitions. [2022-01-19 13:19:57,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:57,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1976 transitions. [2022-01-19 13:19:57,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.0952380952381) internal successors, (1976), 21 states have internal predecessors, (1976), 0 states have call successors, (0), 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 13:19:57,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:19:57,402 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:19:57,403 INFO L186 Difference]: Start difference. First operand has 394 places, 213 transitions, 1943 flow. Second operand 21 states and 1976 transitions. [2022-01-19 13:19:57,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 293 transitions, 3057 flow [2022-01-19 13:19:57,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 293 transitions, 2845 flow, removed 106 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:57,556 INFO L242 Difference]: Finished difference. Result has 425 places, 244 transitions, 2355 flow [2022-01-19 13:19:57,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2355, PETRI_PLACES=425, PETRI_TRANSITIONS=244} [2022-01-19 13:19:57,556 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 313 predicate places. [2022-01-19 13:19:57,556 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 244 transitions, 2355 flow [2022-01-19 13:19:57,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:57,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:57,557 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] [2022-01-19 13:19:57,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 13:19:57,557 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash -462960196, now seen corresponding path program 5 times [2022-01-19 13:19:57,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:57,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019256162] [2022-01-19 13:19:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:57,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:57,638 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 13:19:57,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:57,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019256162] [2022-01-19 13:19:57,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019256162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:57,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:57,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:57,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422097769] [2022-01-19 13:19:57,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:57,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:57,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:57,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:57,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 244 transitions, 2355 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:57,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:57,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:57,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:58,462 INFO L129 PetriNetUnfolder]: 1103/3382 cut-off events. [2022-01-19 13:19:58,462 INFO L130 PetriNetUnfolder]: For 30184/30271 co-relation queries the response was YES. [2022-01-19 13:19:58,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17329 conditions, 3382 events. 1103/3382 cut-off events. For 30184/30271 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 33707 event pairs, 172 based on Foata normal form. 2/3353 useless extension candidates. Maximal degree in co-relation 17117. Up to 1080 conditions per place. [2022-01-19 13:19:58,528 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 121 selfloop transitions, 65 changer transitions 22/317 dead transitions. [2022-01-19 13:19:58,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 317 transitions, 3551 flow [2022-01-19 13:19:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:19:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:19:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-01-19 13:19:58,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592741935483871 [2022-01-19 13:19:58,530 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-01-19 13:19:58,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-01-19 13:19:58,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:58,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-01-19 13:19:58,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 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 13:19:58,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:19:58,532 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:19:58,532 INFO L186 Difference]: Start difference. First operand has 425 places, 244 transitions, 2355 flow. Second operand 20 states and 1883 transitions. [2022-01-19 13:19:58,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 317 transitions, 3551 flow [2022-01-19 13:19:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 317 transitions, 3345 flow, removed 103 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:58,712 INFO L242 Difference]: Finished difference. Result has 455 places, 275 transitions, 2852 flow [2022-01-19 13:19:58,712 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2852, PETRI_PLACES=455, PETRI_TRANSITIONS=275} [2022-01-19 13:19:58,713 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 343 predicate places. [2022-01-19 13:19:58,713 INFO L470 AbstractCegarLoop]: Abstraction has has 455 places, 275 transitions, 2852 flow [2022-01-19 13:19:58,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:58,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:58,713 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] [2022-01-19 13:19:58,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 13:19:58,713 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:19:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 158013750, now seen corresponding path program 6 times [2022-01-19 13:19:58,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:58,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565447923] [2022-01-19 13:19:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:58,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:58,789 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 13:19:58,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:58,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565447923] [2022-01-19 13:19:58,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565447923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:58,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:58,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:19:58,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206137049] [2022-01-19 13:19:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:58,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:19:58,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:58,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:19:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:19:58,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:19:58,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 275 transitions, 2852 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:19:58,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:58,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:19:58,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:59,721 INFO L129 PetriNetUnfolder]: 1193/3768 cut-off events. [2022-01-19 13:19:59,721 INFO L130 PetriNetUnfolder]: For 41544/41656 co-relation queries the response was YES. [2022-01-19 13:19:59,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 3768 events. 1193/3768 cut-off events. For 41544/41656 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 39248 event pairs, 45 based on Foata normal form. 8/3757 useless extension candidates. Maximal degree in co-relation 19841. Up to 569 conditions per place. [2022-01-19 13:19:59,797 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 124 selfloop transitions, 112 changer transitions 27/372 dead transitions. [2022-01-19 13:19:59,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 372 transitions, 4226 flow [2022-01-19 13:19:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:19:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:19:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2246 transitions. [2022-01-19 13:19:59,798 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547043010752689 [2022-01-19 13:19:59,798 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2246 transitions. [2022-01-19 13:19:59,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2246 transitions. [2022-01-19 13:19:59,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:59,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2246 transitions. [2022-01-19 13:19:59,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 93.58333333333333) internal successors, (2246), 24 states have internal predecessors, (2246), 0 states have call successors, (0), 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 13:19:59,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:59,801 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 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 13:19:59,802 INFO L186 Difference]: Start difference. First operand has 455 places, 275 transitions, 2852 flow. Second operand 24 states and 2246 transitions. [2022-01-19 13:19:59,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 372 transitions, 4226 flow [2022-01-19 13:20:00,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 372 transitions, 3874 flow, removed 176 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:00,084 INFO L242 Difference]: Finished difference. Result has 492 places, 300 transitions, 3244 flow [2022-01-19 13:20:00,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3244, PETRI_PLACES=492, PETRI_TRANSITIONS=300} [2022-01-19 13:20:00,084 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 380 predicate places. [2022-01-19 13:20:00,084 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 300 transitions, 3244 flow [2022-01-19 13:20:00,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:00,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:00,085 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] [2022-01-19 13:20:00,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 13:20:00,085 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 16277834, now seen corresponding path program 7 times [2022-01-19 13:20:00,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:00,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295172949] [2022-01-19 13:20:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:00,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:00,180 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 13:20:00,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:00,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295172949] [2022-01-19 13:20:00,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295172949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:00,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:00,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:00,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416471637] [2022-01-19 13:20:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:00,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:00,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:00,182 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:00,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 300 transitions, 3244 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:00,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:00,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:00,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:01,226 INFO L129 PetriNetUnfolder]: 1247/3899 cut-off events. [2022-01-19 13:20:01,226 INFO L130 PetriNetUnfolder]: For 47451/47560 co-relation queries the response was YES. [2022-01-19 13:20:01,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22130 conditions, 3899 events. 1247/3899 cut-off events. For 47451/47560 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 40405 event pairs, 162 based on Foata normal form. 12/3866 useless extension candidates. Maximal degree in co-relation 21887. Up to 994 conditions per place. [2022-01-19 13:20:01,307 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 135 selfloop transitions, 95 changer transitions 14/353 dead transitions. [2022-01-19 13:20:01,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 353 transitions, 4391 flow [2022-01-19 13:20:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:20:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:20:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1508 transitions. [2022-01-19 13:20:01,308 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-01-19 13:20:01,308 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1508 transitions. [2022-01-19 13:20:01,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1508 transitions. [2022-01-19 13:20:01,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:01,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1508 transitions. [2022-01-19 13:20:01,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.25) internal successors, (1508), 16 states have internal predecessors, (1508), 0 states have call successors, (0), 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 13:20:01,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:20:01,311 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 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 13:20:01,311 INFO L186 Difference]: Start difference. First operand has 492 places, 300 transitions, 3244 flow. Second operand 16 states and 1508 transitions. [2022-01-19 13:20:01,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 353 transitions, 4391 flow [2022-01-19 13:20:01,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 353 transitions, 4159 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-01-19 13:20:01,592 INFO L242 Difference]: Finished difference. Result has 506 places, 317 transitions, 3553 flow [2022-01-19 13:20:01,592 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3553, PETRI_PLACES=506, PETRI_TRANSITIONS=317} [2022-01-19 13:20:01,593 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 394 predicate places. [2022-01-19 13:20:01,593 INFO L470 AbstractCegarLoop]: Abstraction has has 506 places, 317 transitions, 3553 flow [2022-01-19 13:20:01,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:01,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:01,593 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] [2022-01-19 13:20:01,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 13:20:01,593 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:01,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1613740250, now seen corresponding path program 8 times [2022-01-19 13:20:01,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:01,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135832990] [2022-01-19 13:20:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:01,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:01,675 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 13:20:01,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:01,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135832990] [2022-01-19 13:20:01,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135832990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:01,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:01,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:01,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259294514] [2022-01-19 13:20:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:01,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:01,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:01,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:01,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 317 transitions, 3553 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:01,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:01,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:01,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:02,811 INFO L129 PetriNetUnfolder]: 1323/4311 cut-off events. [2022-01-19 13:20:02,811 INFO L130 PetriNetUnfolder]: For 57854/57963 co-relation queries the response was YES. [2022-01-19 13:20:02,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24864 conditions, 4311 events. 1323/4311 cut-off events. For 57854/57963 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 46682 event pairs, 183 based on Foata normal form. 7/4264 useless extension candidates. Maximal degree in co-relation 24615. Up to 1068 conditions per place. [2022-01-19 13:20:02,908 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 155 selfloop transitions, 105 changer transitions 19/388 dead transitions. [2022-01-19 13:20:02,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 388 transitions, 4968 flow [2022-01-19 13:20:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:20:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:20:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1879 transitions. [2022-01-19 13:20:02,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7576612903225807 [2022-01-19 13:20:02,909 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1879 transitions. [2022-01-19 13:20:02,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1879 transitions. [2022-01-19 13:20:02,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:02,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1879 transitions. [2022-01-19 13:20:02,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.95) internal successors, (1879), 20 states have internal predecessors, (1879), 0 states have call successors, (0), 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 13:20:02,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:20:02,912 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:20:02,912 INFO L186 Difference]: Start difference. First operand has 506 places, 317 transitions, 3553 flow. Second operand 20 states and 1879 transitions. [2022-01-19 13:20:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 388 transitions, 4968 flow [2022-01-19 13:20:03,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 388 transitions, 4794 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-01-19 13:20:03,254 INFO L242 Difference]: Finished difference. Result has 534 places, 349 transitions, 4351 flow [2022-01-19 13:20:03,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4351, PETRI_PLACES=534, PETRI_TRANSITIONS=349} [2022-01-19 13:20:03,254 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 422 predicate places. [2022-01-19 13:20:03,254 INFO L470 AbstractCegarLoop]: Abstraction has has 534 places, 349 transitions, 4351 flow [2022-01-19 13:20:03,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:03,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:03,255 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] [2022-01-19 13:20:03,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 13:20:03,255 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash -279606758, now seen corresponding path program 9 times [2022-01-19 13:20:03,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:03,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791757632] [2022-01-19 13:20:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:03,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:03,328 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 13:20:03,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:03,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791757632] [2022-01-19 13:20:03,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791757632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:03,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:03,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:03,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579926300] [2022-01-19 13:20:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:03,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:03,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:03,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:03,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 349 transitions, 4351 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:03,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:03,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:03,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:04,495 INFO L129 PetriNetUnfolder]: 1315/4354 cut-off events. [2022-01-19 13:20:04,495 INFO L130 PetriNetUnfolder]: For 59673/59785 co-relation queries the response was YES. [2022-01-19 13:20:04,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26068 conditions, 4354 events. 1315/4354 cut-off events. For 59673/59785 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 47648 event pairs, 144 based on Foata normal form. 16/4337 useless extension candidates. Maximal degree in co-relation 25807. Up to 1056 conditions per place. [2022-01-19 13:20:04,610 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 150 selfloop transitions, 116 changer transitions 23/398 dead transitions. [2022-01-19 13:20:04,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 398 transitions, 5612 flow [2022-01-19 13:20:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:20:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:20:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 13:20:04,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 13:20:04,611 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 13:20:04,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 13:20:04,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:04,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 13:20:04,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 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 13:20:04,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:04,614 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:04,614 INFO L186 Difference]: Start difference. First operand has 534 places, 349 transitions, 4351 flow. Second operand 18 states and 1693 transitions. [2022-01-19 13:20:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 398 transitions, 5612 flow [2022-01-19 13:20:05,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 398 transitions, 5168 flow, removed 222 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:05,253 INFO L242 Difference]: Finished difference. Result has 554 places, 358 transitions, 4547 flow [2022-01-19 13:20:05,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4547, PETRI_PLACES=554, PETRI_TRANSITIONS=358} [2022-01-19 13:20:05,254 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 442 predicate places. [2022-01-19 13:20:05,254 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 358 transitions, 4547 flow [2022-01-19 13:20:05,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:05,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:05,254 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] [2022-01-19 13:20:05,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 13:20:05,255 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:05,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:05,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1098363170, now seen corresponding path program 10 times [2022-01-19 13:20:05,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:05,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598952201] [2022-01-19 13:20:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:05,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:05,336 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 13:20:05,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:05,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598952201] [2022-01-19 13:20:05,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598952201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:05,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:05,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:05,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875208019] [2022-01-19 13:20:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:05,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:05,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:05,338 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:05,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 358 transitions, 4547 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:05,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:05,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:05,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:06,628 INFO L129 PetriNetUnfolder]: 1429/4760 cut-off events. [2022-01-19 13:20:06,628 INFO L130 PetriNetUnfolder]: For 43464/43576 co-relation queries the response was YES. [2022-01-19 13:20:06,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27630 conditions, 4760 events. 1429/4760 cut-off events. For 43464/43576 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 53226 event pairs, 178 based on Foata normal form. 10/4733 useless extension candidates. Maximal degree in co-relation 27363. Up to 1156 conditions per place. [2022-01-19 13:20:06,747 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 174 selfloop transitions, 116 changer transitions 16/415 dead transitions. [2022-01-19 13:20:06,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 415 transitions, 5841 flow [2022-01-19 13:20:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:20:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:20:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-01-19 13:20:06,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-01-19 13:20:06,748 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-01-19 13:20:06,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-01-19 13:20:06,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:06,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-01-19 13:20:06,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:06,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:06,751 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:06,751 INFO L186 Difference]: Start difference. First operand has 554 places, 358 transitions, 4547 flow. Second operand 17 states and 1604 transitions. [2022-01-19 13:20:06,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 415 transitions, 5841 flow [2022-01-19 13:20:07,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 415 transitions, 5657 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-01-19 13:20:07,172 INFO L242 Difference]: Finished difference. Result has 570 places, 380 transitions, 5119 flow [2022-01-19 13:20:07,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5119, PETRI_PLACES=570, PETRI_TRANSITIONS=380} [2022-01-19 13:20:07,172 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 458 predicate places. [2022-01-19 13:20:07,172 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 380 transitions, 5119 flow [2022-01-19 13:20:07,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:07,172 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:07,173 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] [2022-01-19 13:20:07,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 13:20:07,173 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:07,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash -593310370, now seen corresponding path program 11 times [2022-01-19 13:20:07,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:07,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959347192] [2022-01-19 13:20:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:07,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:07,255 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 13:20:07,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:07,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959347192] [2022-01-19 13:20:07,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959347192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:07,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:07,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:07,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453747221] [2022-01-19 13:20:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:07,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:07,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:07,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:07,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 380 transitions, 5119 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:07,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:07,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:07,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:08,749 INFO L129 PetriNetUnfolder]: 1503/5139 cut-off events. [2022-01-19 13:20:08,750 INFO L130 PetriNetUnfolder]: For 49423/49532 co-relation queries the response was YES. [2022-01-19 13:20:08,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30555 conditions, 5139 events. 1503/5139 cut-off events. For 49423/49532 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 58854 event pairs, 194 based on Foata normal form. 7/5100 useless extension candidates. Maximal degree in co-relation 30283. Up to 1266 conditions per place. [2022-01-19 13:20:08,875 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 197 selfloop transitions, 112 changer transitions 15/433 dead transitions. [2022-01-19 13:20:08,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 433 transitions, 6434 flow [2022-01-19 13:20:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:20:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:20:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-01-19 13:20:08,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-01-19 13:20:08,877 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-01-19 13:20:08,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-01-19 13:20:08,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:08,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-01-19 13:20:08,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:08,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:08,880 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:08,880 INFO L186 Difference]: Start difference. First operand has 570 places, 380 transitions, 5119 flow. Second operand 17 states and 1604 transitions. [2022-01-19 13:20:08,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 433 transitions, 6434 flow [2022-01-19 13:20:09,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 433 transitions, 6262 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:09,578 INFO L242 Difference]: Finished difference. Result has 590 places, 402 transitions, 5675 flow [2022-01-19 13:20:09,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5675, PETRI_PLACES=590, PETRI_TRANSITIONS=402} [2022-01-19 13:20:09,578 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 478 predicate places. [2022-01-19 13:20:09,578 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 402 transitions, 5675 flow [2022-01-19 13:20:09,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:09,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:09,579 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] [2022-01-19 13:20:09,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 13:20:09,579 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1911279180, now seen corresponding path program 12 times [2022-01-19 13:20:09,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:09,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527870354] [2022-01-19 13:20:09,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:09,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:09,664 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 13:20:09,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:09,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527870354] [2022-01-19 13:20:09,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527870354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:09,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:09,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:09,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487523782] [2022-01-19 13:20:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:09,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:09,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:09,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:09,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:09,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:09,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 402 transitions, 5675 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:09,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:09,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:09,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:11,173 INFO L129 PetriNetUnfolder]: 1513/5279 cut-off events. [2022-01-19 13:20:11,173 INFO L130 PetriNetUnfolder]: For 51423/51534 co-relation queries the response was YES. [2022-01-19 13:20:11,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31770 conditions, 5279 events. 1513/5279 cut-off events. For 51423/51534 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 60886 event pairs, 204 based on Foata normal form. 7/5236 useless extension candidates. Maximal degree in co-relation 31491. Up to 1310 conditions per place. [2022-01-19 13:20:11,295 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 182 selfloop transitions, 130 changer transitions 20/441 dead transitions. [2022-01-19 13:20:11,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 441 transitions, 6714 flow [2022-01-19 13:20:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:20:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:20:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1694 transitions. [2022-01-19 13:20:11,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7589605734767025 [2022-01-19 13:20:11,297 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1694 transitions. [2022-01-19 13:20:11,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1694 transitions. [2022-01-19 13:20:11,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:11,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1694 transitions. [2022-01-19 13:20:11,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.11111111111111) internal successors, (1694), 18 states have internal predecessors, (1694), 0 states have call successors, (0), 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 13:20:11,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:11,299 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:11,299 INFO L186 Difference]: Start difference. First operand has 590 places, 402 transitions, 5675 flow. Second operand 18 states and 1694 transitions. [2022-01-19 13:20:11,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 441 transitions, 6714 flow [2022-01-19 13:20:11,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 441 transitions, 6517 flow, removed 72 selfloop flow, removed 3 redundant places. [2022-01-19 13:20:11,820 INFO L242 Difference]: Finished difference. Result has 607 places, 412 transitions, 5972 flow [2022-01-19 13:20:11,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5972, PETRI_PLACES=607, PETRI_TRANSITIONS=412} [2022-01-19 13:20:11,821 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 495 predicate places. [2022-01-19 13:20:11,821 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 412 transitions, 5972 flow [2022-01-19 13:20:11,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:11,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:11,821 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] [2022-01-19 13:20:11,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 13:20:11,822 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:11,822 INFO L85 PathProgramCache]: Analyzing trace with hash -426158626, now seen corresponding path program 13 times [2022-01-19 13:20:11,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:11,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912127038] [2022-01-19 13:20:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:11,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:11,907 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 13:20:11,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:11,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912127038] [2022-01-19 13:20:11,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912127038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:11,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:11,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:11,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127757989] [2022-01-19 13:20:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:11,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:11,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:11,909 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:11,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 412 transitions, 5972 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:11,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:11,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:11,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:13,698 INFO L129 PetriNetUnfolder]: 1507/5265 cut-off events. [2022-01-19 13:20:13,699 INFO L130 PetriNetUnfolder]: For 51138/51252 co-relation queries the response was YES. [2022-01-19 13:20:13,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31997 conditions, 5265 events. 1507/5265 cut-off events. For 51138/51252 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 60736 event pairs, 211 based on Foata normal form. 7/5224 useless extension candidates. Maximal degree in co-relation 31715. Up to 1290 conditions per place. [2022-01-19 13:20:13,819 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 196 selfloop transitions, 119 changer transitions 25/449 dead transitions. [2022-01-19 13:20:13,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 449 transitions, 6992 flow [2022-01-19 13:20:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:20:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:20:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1698 transitions. [2022-01-19 13:20:13,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 13:20:13,821 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1698 transitions. [2022-01-19 13:20:13,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1698 transitions. [2022-01-19 13:20:13,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:13,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1698 transitions. [2022-01-19 13:20:13,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.33333333333333) internal successors, (1698), 18 states have internal predecessors, (1698), 0 states have call successors, (0), 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 13:20:13,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:13,823 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:13,823 INFO L186 Difference]: Start difference. First operand has 607 places, 412 transitions, 5972 flow. Second operand 18 states and 1698 transitions. [2022-01-19 13:20:13,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 449 transitions, 6992 flow [2022-01-19 13:20:14,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 449 transitions, 6842 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-01-19 13:20:14,352 INFO L242 Difference]: Finished difference. Result has 620 places, 419 transitions, 6262 flow [2022-01-19 13:20:14,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6262, PETRI_PLACES=620, PETRI_TRANSITIONS=419} [2022-01-19 13:20:14,353 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 508 predicate places. [2022-01-19 13:20:14,353 INFO L470 AbstractCegarLoop]: Abstraction has has 620 places, 419 transitions, 6262 flow [2022-01-19 13:20:14,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:14,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:14,353 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] [2022-01-19 13:20:14,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 13:20:14,353 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1251488116, now seen corresponding path program 14 times [2022-01-19 13:20:14,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:14,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139240519] [2022-01-19 13:20:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:14,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:14,434 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 13:20:14,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139240519] [2022-01-19 13:20:14,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139240519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:14,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:14,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:14,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752852530] [2022-01-19 13:20:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:14,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:14,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:14,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:14,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 419 transitions, 6262 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:14,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:14,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:14,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:16,150 INFO L129 PetriNetUnfolder]: 1619/5708 cut-off events. [2022-01-19 13:20:16,150 INFO L130 PetriNetUnfolder]: For 58892/59003 co-relation queries the response was YES. [2022-01-19 13:20:16,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34628 conditions, 5708 events. 1619/5708 cut-off events. For 58892/59003 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 67264 event pairs, 164 based on Foata normal form. 8/5690 useless extension candidates. Maximal degree in co-relation 34347. Up to 1170 conditions per place. [2022-01-19 13:20:16,292 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 200 selfloop transitions, 156 changer transitions 23/488 dead transitions. [2022-01-19 13:20:16,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 488 transitions, 7744 flow [2022-01-19 13:20:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:20:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:20:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2063 transitions. [2022-01-19 13:20:16,294 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7562316715542522 [2022-01-19 13:20:16,294 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2063 transitions. [2022-01-19 13:20:16,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2063 transitions. [2022-01-19 13:20:16,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:16,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2063 transitions. [2022-01-19 13:20:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.77272727272727) internal successors, (2063), 22 states have internal predecessors, (2063), 0 states have call successors, (0), 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 13:20:16,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:20:16,297 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 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 13:20:16,297 INFO L186 Difference]: Start difference. First operand has 620 places, 419 transitions, 6262 flow. Second operand 22 states and 2063 transitions. [2022-01-19 13:20:16,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 488 transitions, 7744 flow [2022-01-19 13:20:16,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 488 transitions, 7589 flow, removed 64 selfloop flow, removed 8 redundant places. [2022-01-19 13:20:16,899 INFO L242 Difference]: Finished difference. Result has 645 places, 447 transitions, 6955 flow [2022-01-19 13:20:16,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6955, PETRI_PLACES=645, PETRI_TRANSITIONS=447} [2022-01-19 13:20:16,900 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 533 predicate places. [2022-01-19 13:20:16,900 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 447 transitions, 6955 flow [2022-01-19 13:20:16,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:16,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:16,901 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] [2022-01-19 13:20:16,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 13:20:16,901 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash -646797606, now seen corresponding path program 15 times [2022-01-19 13:20:16,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:16,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686744053] [2022-01-19 13:20:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:16,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:16,977 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 13:20:16,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:16,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686744053] [2022-01-19 13:20:16,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686744053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:16,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:16,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:16,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306959925] [2022-01-19 13:20:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:16,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:16,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:16,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:16,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 447 transitions, 6955 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:16,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:16,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:16,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:18,780 INFO L129 PetriNetUnfolder]: 1687/5916 cut-off events. [2022-01-19 13:20:18,780 INFO L130 PetriNetUnfolder]: For 68955/69066 co-relation queries the response was YES. [2022-01-19 13:20:18,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37743 conditions, 5916 events. 1687/5916 cut-off events. For 68955/69066 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 69959 event pairs, 176 based on Foata normal form. 8/5889 useless extension candidates. Maximal degree in co-relation 37455. Up to 1862 conditions per place. [2022-01-19 13:20:18,917 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 271 selfloop transitions, 110 changer transitions 21/511 dead transitions. [2022-01-19 13:20:18,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 511 transitions, 8605 flow [2022-01-19 13:20:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:20:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:20:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1973 transitions. [2022-01-19 13:20:18,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7576804915514593 [2022-01-19 13:20:18,919 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1973 transitions. [2022-01-19 13:20:18,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1973 transitions. [2022-01-19 13:20:18,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:18,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1973 transitions. [2022-01-19 13:20:18,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.95238095238095) internal successors, (1973), 21 states have internal predecessors, (1973), 0 states have call successors, (0), 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 13:20:18,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:20:18,922 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 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 13:20:18,922 INFO L186 Difference]: Start difference. First operand has 645 places, 447 transitions, 6955 flow. Second operand 21 states and 1973 transitions. [2022-01-19 13:20:18,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 511 transitions, 8605 flow [2022-01-19 13:20:19,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 511 transitions, 8519 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:19,591 INFO L242 Difference]: Finished difference. Result has 675 places, 473 transitions, 7764 flow [2022-01-19 13:20:19,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6871, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7764, PETRI_PLACES=675, PETRI_TRANSITIONS=473} [2022-01-19 13:20:19,591 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 563 predicate places. [2022-01-19 13:20:19,592 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 473 transitions, 7764 flow [2022-01-19 13:20:19,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:19,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:19,592 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] [2022-01-19 13:20:19,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 13:20:19,592 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 951166574, now seen corresponding path program 16 times [2022-01-19 13:20:19,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:19,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936874634] [2022-01-19 13:20:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:19,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:19,674 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 13:20:19,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:19,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936874634] [2022-01-19 13:20:19,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936874634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:19,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:19,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:19,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819364238] [2022-01-19 13:20:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:19,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:19,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:19,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:19,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 473 transitions, 7764 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:19,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:19,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:19,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:21,510 INFO L129 PetriNetUnfolder]: 1685/5872 cut-off events. [2022-01-19 13:20:21,511 INFO L130 PetriNetUnfolder]: For 76728/76836 co-relation queries the response was YES. [2022-01-19 13:20:21,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39310 conditions, 5872 events. 1685/5872 cut-off events. For 76728/76836 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 69042 event pairs, 180 based on Foata normal form. 8/5852 useless extension candidates. Maximal degree in co-relation 39009. Up to 1354 conditions per place. [2022-01-19 13:20:21,660 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 217 selfloop transitions, 166 changer transitions 23/515 dead transitions. [2022-01-19 13:20:21,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 515 transitions, 9000 flow [2022-01-19 13:20:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:20:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:20:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 13:20:21,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 13:20:21,661 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 13:20:21,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 13:20:21,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:21,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 13:20:21,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 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 13:20:21,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:21,664 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:21,664 INFO L186 Difference]: Start difference. First operand has 675 places, 473 transitions, 7764 flow. Second operand 18 states and 1693 transitions. [2022-01-19 13:20:21,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 515 transitions, 9000 flow [2022-01-19 13:20:22,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 515 transitions, 8790 flow, removed 105 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:22,470 INFO L242 Difference]: Finished difference. Result has 695 places, 482 transitions, 8121 flow [2022-01-19 13:20:22,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8121, PETRI_PLACES=695, PETRI_TRANSITIONS=482} [2022-01-19 13:20:22,470 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 583 predicate places. [2022-01-19 13:20:22,470 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 482 transitions, 8121 flow [2022-01-19 13:20:22,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:22,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:22,471 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] [2022-01-19 13:20:22,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 13:20:22,471 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:22,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2117309622, now seen corresponding path program 17 times [2022-01-19 13:20:22,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:22,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920917568] [2022-01-19 13:20:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:22,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:22,541 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 13:20:22,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920917568] [2022-01-19 13:20:22,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920917568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:22,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:22,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:22,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641106763] [2022-01-19 13:20:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:22,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:22,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:22,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:22,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 482 transitions, 8121 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:22,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:22,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:22,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:24,554 INFO L129 PetriNetUnfolder]: 1795/6394 cut-off events. [2022-01-19 13:20:24,555 INFO L130 PetriNetUnfolder]: For 84137/84245 co-relation queries the response was YES. [2022-01-19 13:20:24,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43076 conditions, 6394 events. 1795/6394 cut-off events. For 84137/84245 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 77068 event pairs, 200 based on Foata normal form. 8/6361 useless extension candidates. Maximal degree in co-relation 42769. Up to 1900 conditions per place. [2022-01-19 13:20:24,714 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 275 selfloop transitions, 135 changer transitions 16/535 dead transitions. [2022-01-19 13:20:24,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 535 transitions, 9679 flow [2022-01-19 13:20:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:20:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:20:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1603 transitions. [2022-01-19 13:20:24,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604364326375711 [2022-01-19 13:20:24,715 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1603 transitions. [2022-01-19 13:20:24,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1603 transitions. [2022-01-19 13:20:24,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:24,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1603 transitions. [2022-01-19 13:20:24,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.29411764705883) internal successors, (1603), 17 states have internal predecessors, (1603), 0 states have call successors, (0), 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 13:20:24,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:24,717 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:24,718 INFO L186 Difference]: Start difference. First operand has 695 places, 482 transitions, 8121 flow. Second operand 17 states and 1603 transitions. [2022-01-19 13:20:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 535 transitions, 9679 flow [2022-01-19 13:20:25,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 535 transitions, 9423 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-01-19 13:20:25,582 INFO L242 Difference]: Finished difference. Result has 711 places, 504 transitions, 8707 flow [2022-01-19 13:20:25,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7879, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8707, PETRI_PLACES=711, PETRI_TRANSITIONS=504} [2022-01-19 13:20:25,583 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 599 predicate places. [2022-01-19 13:20:25,583 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 504 transitions, 8707 flow [2022-01-19 13:20:25,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:25,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:25,583 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] [2022-01-19 13:20:25,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 13:20:25,584 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1896439110, now seen corresponding path program 18 times [2022-01-19 13:20:25,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:25,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428110279] [2022-01-19 13:20:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:25,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:25,664 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 13:20:25,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:25,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428110279] [2022-01-19 13:20:25,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428110279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:25,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:25,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:25,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528782034] [2022-01-19 13:20:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:25,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:25,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:25,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:25,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 504 transitions, 8707 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:25,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:25,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:25,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:28,161 INFO L129 PetriNetUnfolder]: 1869/6664 cut-off events. [2022-01-19 13:20:28,161 INFO L130 PetriNetUnfolder]: For 89616/89724 co-relation queries the response was YES. [2022-01-19 13:20:28,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46371 conditions, 6664 events. 1869/6664 cut-off events. For 89616/89724 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 81099 event pairs, 212 based on Foata normal form. 8/6631 useless extension candidates. Maximal degree in co-relation 46059. Up to 1932 conditions per place. [2022-01-19 13:20:28,303 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 301 selfloop transitions, 130 changer transitions 17/557 dead transitions. [2022-01-19 13:20:28,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 557 transitions, 10329 flow [2022-01-19 13:20:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:20:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:20:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1607 transitions. [2022-01-19 13:20:28,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623339658444023 [2022-01-19 13:20:28,304 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1607 transitions. [2022-01-19 13:20:28,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1607 transitions. [2022-01-19 13:20:28,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:28,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1607 transitions. [2022-01-19 13:20:28,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.52941176470588) internal successors, (1607), 17 states have internal predecessors, (1607), 0 states have call successors, (0), 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 13:20:28,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:28,307 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 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 13:20:28,307 INFO L186 Difference]: Start difference. First operand has 711 places, 504 transitions, 8707 flow. Second operand 17 states and 1607 transitions. [2022-01-19 13:20:28,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 557 transitions, 10329 flow [2022-01-19 13:20:29,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 557 transitions, 10143 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:29,250 INFO L242 Difference]: Finished difference. Result has 731 places, 526 transitions, 9356 flow [2022-01-19 13:20:29,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8527, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9356, PETRI_PLACES=731, PETRI_TRANSITIONS=526} [2022-01-19 13:20:29,250 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 619 predicate places. [2022-01-19 13:20:29,250 INFO L470 AbstractCegarLoop]: Abstraction has has 731 places, 526 transitions, 9356 flow [2022-01-19 13:20:29,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:29,251 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:29,251 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] [2022-01-19 13:20:29,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 13:20:29,251 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1402188288, now seen corresponding path program 19 times [2022-01-19 13:20:29,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:29,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200113598] [2022-01-19 13:20:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:29,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:29,328 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 13:20:29,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:29,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200113598] [2022-01-19 13:20:29,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200113598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:29,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:29,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:29,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118957872] [2022-01-19 13:20:29,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:29,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:29,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:29,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:29,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 526 transitions, 9356 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:29,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:29,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:29,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:31,572 INFO L129 PetriNetUnfolder]: 1879/6832 cut-off events. [2022-01-19 13:20:31,572 INFO L130 PetriNetUnfolder]: For 95799/95907 co-relation queries the response was YES. [2022-01-19 13:20:31,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47838 conditions, 6832 events. 1879/6832 cut-off events. For 95799/95907 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 83965 event pairs, 214 based on Foata normal form. 8/6797 useless extension candidates. Maximal degree in co-relation 47519. Up to 1990 conditions per place. [2022-01-19 13:20:31,751 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 298 selfloop transitions, 135 changer transitions 21/563 dead transitions. [2022-01-19 13:20:31,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 563 transitions, 10686 flow [2022-01-19 13:20:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:20:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:20:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1697 transitions. [2022-01-19 13:20:31,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603046594982079 [2022-01-19 13:20:31,753 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1697 transitions. [2022-01-19 13:20:31,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1697 transitions. [2022-01-19 13:20:31,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:31,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1697 transitions. [2022-01-19 13:20:31,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.27777777777777) internal successors, (1697), 18 states have internal predecessors, (1697), 0 states have call successors, (0), 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 13:20:31,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:31,755 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:31,755 INFO L186 Difference]: Start difference. First operand has 731 places, 526 transitions, 9356 flow. Second operand 18 states and 1697 transitions. [2022-01-19 13:20:31,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 563 transitions, 10686 flow [2022-01-19 13:20:32,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 563 transitions, 10412 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-01-19 13:20:32,827 INFO L242 Difference]: Finished difference. Result has 747 places, 535 transitions, 9642 flow [2022-01-19 13:20:32,827 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9116, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9642, PETRI_PLACES=747, PETRI_TRANSITIONS=535} [2022-01-19 13:20:32,827 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 635 predicate places. [2022-01-19 13:20:32,827 INFO L470 AbstractCegarLoop]: Abstraction has has 747 places, 535 transitions, 9642 flow [2022-01-19 13:20:32,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:32,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:32,828 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] [2022-01-19 13:20:32,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 13:20:32,828 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:32,828 INFO L85 PathProgramCache]: Analyzing trace with hash -807038490, now seen corresponding path program 20 times [2022-01-19 13:20:32,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:32,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938712019] [2022-01-19 13:20:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:32,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:32,904 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 13:20:32,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:32,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938712019] [2022-01-19 13:20:32,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938712019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:32,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:32,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:20:32,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327554021] [2022-01-19 13:20:32,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:32,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:20:32,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:20:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:20:32,906 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 13:20:32,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 535 transitions, 9642 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:32,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:32,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 13:20:32,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:35,071 INFO L129 PetriNetUnfolder]: 1879/6860 cut-off events. [2022-01-19 13:20:35,072 INFO L130 PetriNetUnfolder]: For 96632/96740 co-relation queries the response was YES. [2022-01-19 13:20:35,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47628 conditions, 6860 events. 1879/6860 cut-off events. For 96632/96740 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 84650 event pairs, 214 based on Foata normal form. 8/6829 useless extension candidates. Maximal degree in co-relation 47307. Up to 1956 conditions per place. [2022-01-19 13:20:35,268 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 0 selfloop transitions, 0 changer transitions 563/563 dead transitions. [2022-01-19 13:20:35,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 563 transitions, 10778 flow [2022-01-19 13:20:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:20:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:20:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 13:20:35,269 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 13:20:35,269 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 13:20:35,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 13:20:35,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:35,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 13:20:35,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 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 13:20:35,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:35,271 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 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 13:20:35,271 INFO L186 Difference]: Start difference. First operand has 747 places, 535 transitions, 9642 flow. Second operand 18 states and 1693 transitions. [2022-01-19 13:20:35,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 563 transitions, 10778 flow [2022-01-19 13:20:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 563 transitions, 10579 flow, removed 66 selfloop flow, removed 16 redundant places. [2022-01-19 13:20:36,358 INFO L242 Difference]: Finished difference. Result has 743 places, 0 transitions, 0 flow [2022-01-19 13:20:36,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9435, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=743, PETRI_TRANSITIONS=0} [2022-01-19 13:20:36,359 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 631 predicate places. [2022-01-19 13:20:36,359 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 0 transitions, 0 flow [2022-01-19 13:20:36,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 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 13:20:36,361 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 13:20:36,361 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 13:20:36,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 13:20:36,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 13:20:36,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 13:20:36,366 INFO L732 BasicCegarLoop]: Path program histogram: [20, 20, 12, 11, 8, 8, 1, 1, 1] [2022-01-19 13:20:36,368 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:20:36,368 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:20:36,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:20:36 BasicIcfg [2022-01-19 13:20:36,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:20:36,371 INFO L158 Benchmark]: Toolchain (without parser) took 135997.43ms. Allocated memory was 364.9MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 315.4MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2022-01-19 13:20:36,371 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory is still 333.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:20:36,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.24ms. Allocated memory is still 364.9MB. Free memory was 315.2MB in the beginning and 338.5MB in the end (delta: -23.3MB). Peak memory consumption was 14.9MB. Max. memory is 16.0GB. [2022-01-19 13:20:36,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.69ms. Allocated memory is still 364.9MB. Free memory was 338.5MB in the beginning and 337.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:20:36,372 INFO L158 Benchmark]: Boogie Preprocessor took 17.26ms. Allocated memory is still 364.9MB. Free memory was 337.2MB in the beginning and 335.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:20:36,372 INFO L158 Benchmark]: RCFGBuilder took 427.69ms. Allocated memory is still 364.9MB. Free memory was 335.8MB in the beginning and 321.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 13:20:36,373 INFO L158 Benchmark]: TraceAbstraction took 135270.38ms. Allocated memory was 364.9MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 321.2MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. [2022-01-19 13:20:36,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory is still 333.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 250.24ms. Allocated memory is still 364.9MB. Free memory was 315.2MB in the beginning and 338.5MB in the end (delta: -23.3MB). Peak memory consumption was 14.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.69ms. Allocated memory is still 364.9MB. Free memory was 338.5MB in the beginning and 337.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 17.26ms. Allocated memory is still 364.9MB. Free memory was 337.2MB in the beginning and 335.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 427.69ms. Allocated memory is still 364.9MB. Free memory was 335.8MB in the beginning and 321.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 135270.38ms. Allocated memory was 364.9MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 321.2MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 135.1s, OverallIterations: 82, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 127.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3741 SdHoareTripleChecker+Valid, 7.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3741 mSDsluCounter, 12248 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14451 mSDsCounter, 366 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14398 IncrementalHoareTripleChecker+Invalid, 14764 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 366 mSolverCounterUnsat, 2666 mSDtfsCounter, 14398 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1664 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 1047 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13038occurred in iteration=40, InterpolantAutomatonStates: 1013, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 7462 NumberOfCodeBlocks, 7462 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 7380 ConstructedInterpolants, 0 QuantifiedInterpolants, 31311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 82 InterpolantComputations, 82 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 13:20:36,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...