/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:59:41,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:59:41,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:59:41,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:59:41,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:59:41,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:59:41,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:59:41,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:59:41,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:59:41,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:59:41,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:59:41,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:59:41,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:59:41,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:59:41,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:59:41,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:59:41,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:59:41,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:59:41,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:59:41,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:59:41,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:59:41,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:59:41,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:59:41,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:59:41,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:59:41,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:59:41,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:59:41,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:59:41,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:59:41,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:59:41,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:59:41,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:59:41,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:59:41,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:59:41,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:59:41,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:59:41,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:59:41,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:59:41,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:59:41,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:59:41,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:59:41,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:59:41,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:59:41,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:59:41,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:59:41,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:59:41,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:59:41,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:59:41,358 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:59:41,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:59:41,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:59:41,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:59:41,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:59:41,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:59:41,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:59:41,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:59:41,361 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:59:41,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:59:41,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:59:41,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:59:41,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:59:41,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:59:41,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:59:41,565 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:59:41,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2022-09-20 20:59:41,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f073ede/6894e12761914ebd9f3059c237919339/FLAG137a24690 [2022-09-20 20:59:41,908 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:59:41,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2022-09-20 20:59:41,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f073ede/6894e12761914ebd9f3059c237919339/FLAG137a24690 [2022-09-20 20:59:42,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f073ede/6894e12761914ebd9f3059c237919339 [2022-09-20 20:59:42,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:59:42,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:59:42,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:59:42,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:59:42,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:59:42,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5cd446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42, skipping insertion in model container [2022-09-20 20:59:42,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:59:42,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:59:42,623 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/parallel-barrier.wvr.c[4722,4735] [2022-09-20 20:59:42,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:59:42,630 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:59:42,647 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/parallel-barrier.wvr.c[4722,4735] [2022-09-20 20:59:42,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:59:42,657 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:59:42,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42 WrapperNode [2022-09-20 20:59:42,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:59:42,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:59:42,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:59:42,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:59:42,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,690 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-09-20 20:59:42,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:59:42,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:59:42,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:59:42,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:59:42,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:59:42,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:59:42,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:59:42,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:59:42,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (1/1) ... [2022-09-20 20:59:42,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:59:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:59:42,744 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) [2022-09-20 20:59:42,749 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 [2022-09-20 20:59:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:59:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:59:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:59:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:59:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:59:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:59:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:59:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 20:59:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 20:59:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-09-20 20:59:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-09-20 20:59:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 20:59:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:59:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:59:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:59:42,771 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:59:42,840 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:59:42,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:59:43,102 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:59:43,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:59:43,137 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:59:43,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:59:43 BoogieIcfgContainer [2022-09-20 20:59:43,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:59:43,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:59:43,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:59:43,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:59:43,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:59:42" (1/3) ... [2022-09-20 20:59:43,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583ae105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:59:43, skipping insertion in model container [2022-09-20 20:59:43,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:42" (2/3) ... [2022-09-20 20:59:43,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583ae105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:59:43, skipping insertion in model container [2022-09-20 20:59:43,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:59:43" (3/3) ... [2022-09-20 20:59:43,145 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-09-20 20:59:43,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:59:43,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:59:43,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:59:43,246 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-09-20 20:59:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-09-20 20:59:43,359 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-09-20 20:59:43,359 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 20:59:43,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-09-20 20:59:43,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-09-20 20:59:43,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-09-20 20:59:43,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:59:43,383 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7cede629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:59:43,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-09-20 20:59:43,432 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2022-09-20 20:59:43,433 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 20:59:43,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:43,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:43,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2027569251, now seen corresponding path program 1 times [2022-09-20 20:59:43,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:43,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442006619] [2022-09-20 20:59:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:43,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442006619] [2022-09-20 20:59:43,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442006619] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:43,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:43,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:59:43,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058337902] [2022-09-20 20:59:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:43,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:59:43,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:59:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:59:43,986 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-09-20 20:59:43,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:43,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:43,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-09-20 20:59:43,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:44,336 INFO L130 PetriNetUnfolder]: 300/1180 cut-off events. [2022-09-20 20:59:44,337 INFO L131 PetriNetUnfolder]: For 362/362 co-relation queries the response was YES. [2022-09-20 20:59:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 1180 events. 300/1180 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6508 event pairs, 155 based on Foata normal form. 49/1100 useless extension candidates. Maximal degree in co-relation 1815. Up to 289 conditions per place. [2022-09-20 20:59:44,351 INFO L137 encePairwiseOnDemand]: 228/239 looper letters, 48 selfloop transitions, 6 changer transitions 3/221 dead transitions. [2022-09-20 20:59:44,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 221 transitions, 663 flow [2022-09-20 20:59:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:59:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:59:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1053 transitions. [2022-09-20 20:59:44,367 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8811715481171548 [2022-09-20 20:59:44,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1053 transitions. [2022-09-20 20:59:44,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1053 transitions. [2022-09-20 20:59:44,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:44,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1053 transitions. [2022-09-20 20:59:44,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,386 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1053 transitions. [2022-09-20 20:59:44,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 221 transitions, 663 flow [2022-09-20 20:59:44,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 221 transitions, 589 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-09-20 20:59:44,398 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-09-20 20:59:44,399 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-09-20 20:59:44,403 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-09-20 20:59:44,403 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-09-20 20:59:44,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:44,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:44,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:59:44,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2124591546, now seen corresponding path program 1 times [2022-09-20 20:59:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:44,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413033228] [2022-09-20 20:59:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:44,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413033228] [2022-09-20 20:59:44,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413033228] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:44,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:44,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:59:44,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043261296] [2022-09-20 20:59:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:44,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:59:44,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:59:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:59:44,653 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-09-20 20:59:44,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:44,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-09-20 20:59:44,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:44,897 INFO L130 PetriNetUnfolder]: 312/1183 cut-off events. [2022-09-20 20:59:44,897 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-09-20 20:59:44,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 1183 events. 312/1183 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7062 event pairs, 133 based on Foata normal form. 10/1073 useless extension candidates. Maximal degree in co-relation 1381. Up to 326 conditions per place. [2022-09-20 20:59:44,905 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 1/219 dead transitions. [2022-09-20 20:59:44,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 219 transitions, 612 flow [2022-09-20 20:59:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:59:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:59:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2022-09-20 20:59:44,908 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8761506276150628 [2022-09-20 20:59:44,908 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2022-09-20 20:59:44,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2022-09-20 20:59:44,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:44,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2022-09-20 20:59:44,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,913 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1047 transitions. [2022-09-20 20:59:44,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 219 transitions, 612 flow [2022-09-20 20:59:44,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 219 transitions, 600 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:59:44,918 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-09-20 20:59:44,918 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-09-20 20:59:44,918 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-09-20 20:59:44,919 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-09-20 20:59:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:44,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:44,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:59:44,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1995284025, now seen corresponding path program 1 times [2022-09-20 20:59:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:44,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590777369] [2022-09-20 20:59:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:45,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:45,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590777369] [2022-09-20 20:59:45,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590777369] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:45,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:45,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:59:45,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760301227] [2022-09-20 20:59:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:59:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:59:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:59:45,067 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-09-20 20:59:45,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:45,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:45,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-09-20 20:59:45,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:45,297 INFO L130 PetriNetUnfolder]: 311/1287 cut-off events. [2022-09-20 20:59:45,297 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2022-09-20 20:59:45,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 1287 events. 311/1287 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7712 event pairs, 140 based on Foata normal form. 11/1196 useless extension candidates. Maximal degree in co-relation 1552. Up to 327 conditions per place. [2022-09-20 20:59:45,305 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-09-20 20:59:45,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-09-20 20:59:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:59:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:59:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-09-20 20:59:45,307 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-09-20 20:59:45,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-09-20 20:59:45,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-09-20 20:59:45,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:45,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-09-20 20:59:45,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:45,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:45,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:45,312 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-09-20 20:59:45,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-09-20 20:59:45,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:59:45,318 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-09-20 20:59:45,318 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-09-20 20:59:45,319 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-09-20 20:59:45,320 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-09-20 20:59:45,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:45,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:45,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:59:45,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1948560212, now seen corresponding path program 1 times [2022-09-20 20:59:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:45,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986818211] [2022-09-20 20:59:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:46,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:46,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986818211] [2022-09-20 20:59:46,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986818211] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:46,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:46,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-09-20 20:59:46,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149836174] [2022-09-20 20:59:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-20 20:59:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-20 20:59:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-20 20:59:46,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-09-20 20:59:46,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:46,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:46,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-09-20 20:59:46,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:49,046 INFO L130 PetriNetUnfolder]: 5155/9612 cut-off events. [2022-09-20 20:59:49,047 INFO L131 PetriNetUnfolder]: For 1622/1622 co-relation queries the response was YES. [2022-09-20 20:59:49,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18701 conditions, 9612 events. 5155/9612 cut-off events. For 1622/1622 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 69906 event pairs, 632 based on Foata normal form. 1/8860 useless extension candidates. Maximal degree in co-relation 17826. Up to 3851 conditions per place. [2022-09-20 20:59:49,119 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 227 selfloop transitions, 95 changer transitions 22/473 dead transitions. [2022-09-20 20:59:49,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 473 transitions, 1829 flow [2022-09-20 20:59:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-20 20:59:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-20 20:59:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5724 transitions. [2022-09-20 20:59:49,130 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7257512362114873 [2022-09-20 20:59:49,130 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5724 transitions. [2022-09-20 20:59:49,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5724 transitions. [2022-09-20 20:59:49,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:49,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5724 transitions. [2022-09-20 20:59:49,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 173.45454545454547) internal successors, (5724), 33 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,155 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,155 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 33 states and 5724 transitions. [2022-09-20 20:59:49,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 473 transitions, 1829 flow [2022-09-20 20:59:49,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 473 transitions, 1813 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:59:49,161 INFO L231 Difference]: Finished difference. Result has 244 places, 286 transitions, 929 flow [2022-09-20 20:59:49,162 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=929, PETRI_PLACES=244, PETRI_TRANSITIONS=286} [2022-09-20 20:59:49,162 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 35 predicate places. [2022-09-20 20:59:49,163 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 286 transitions, 929 flow [2022-09-20 20:59:49,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:49,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:49,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:59:49,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash -516237992, now seen corresponding path program 1 times [2022-09-20 20:59:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887424728] [2022-09-20 20:59:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:49,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:49,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887424728] [2022-09-20 20:59:49,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887424728] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:49,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:49,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:59:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319904278] [2022-09-20 20:59:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:49,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:59:49,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:59:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:59:49,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-09-20 20:59:49,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 286 transitions, 929 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:49,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-09-20 20:59:49,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:49,751 INFO L130 PetriNetUnfolder]: 1320/3860 cut-off events. [2022-09-20 20:59:49,751 INFO L131 PetriNetUnfolder]: For 930/1040 co-relation queries the response was YES. [2022-09-20 20:59:49,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 3860 events. 1320/3860 cut-off events. For 930/1040 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 30538 event pairs, 491 based on Foata normal form. 96/3440 useless extension candidates. Maximal degree in co-relation 7124. Up to 875 conditions per place. [2022-09-20 20:59:49,789 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 0/299 dead transitions. [2022-09-20 20:59:49,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 299 transitions, 1063 flow [2022-09-20 20:59:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:59:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:59:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1045 transitions. [2022-09-20 20:59:49,791 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8744769874476988 [2022-09-20 20:59:49,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1045 transitions. [2022-09-20 20:59:49,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1045 transitions. [2022-09-20 20:59:49,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:49,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1045 transitions. [2022-09-20 20:59:49,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,795 INFO L175 Difference]: Start difference. First operand has 244 places, 286 transitions, 929 flow. Second operand 5 states and 1045 transitions. [2022-09-20 20:59:49,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 299 transitions, 1063 flow [2022-09-20 20:59:49,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 299 transitions, 1053 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-09-20 20:59:49,805 INFO L231 Difference]: Finished difference. Result has 238 places, 272 transitions, 876 flow [2022-09-20 20:59:49,805 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=238, PETRI_TRANSITIONS=272} [2022-09-20 20:59:49,807 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 29 predicate places. [2022-09-20 20:59:49,807 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 272 transitions, 876 flow [2022-09-20 20:59:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:49,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:49,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:59:49,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:49,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:49,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1400988971, now seen corresponding path program 1 times [2022-09-20 20:59:49,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:49,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012091688] [2022-09-20 20:59:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:50,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:50,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012091688] [2022-09-20 20:59:50,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012091688] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:50,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:50,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-09-20 20:59:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440865917] [2022-09-20 20:59:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:50,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-20 20:59:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-20 20:59:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-09-20 20:59:50,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-09-20 20:59:50,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 272 transitions, 876 flow. Second operand has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:50,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:50,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-09-20 20:59:50,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:53,456 INFO L130 PetriNetUnfolder]: 5144/9940 cut-off events. [2022-09-20 20:59:53,456 INFO L131 PetriNetUnfolder]: For 8596/8596 co-relation queries the response was YES. [2022-09-20 20:59:53,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25993 conditions, 9940 events. 5144/9940 cut-off events. For 8596/8596 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 72415 event pairs, 1004 based on Foata normal form. 1/9200 useless extension candidates. Maximal degree in co-relation 24745. Up to 4011 conditions per place. [2022-09-20 20:59:53,539 INFO L137 encePairwiseOnDemand]: 214/239 looper letters, 307 selfloop transitions, 137 changer transitions 23/596 dead transitions. [2022-09-20 20:59:53,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 596 transitions, 3112 flow [2022-09-20 20:59:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-09-20 20:59:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-09-20 20:59:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 7250 transitions. [2022-09-20 20:59:53,552 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7222554293684 [2022-09-20 20:59:53,552 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 7250 transitions. [2022-09-20 20:59:53,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 7250 transitions. [2022-09-20 20:59:53,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:53,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 7250 transitions. [2022-09-20 20:59:53,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 172.61904761904762) internal successors, (7250), 42 states have internal predecessors, (7250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:53,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 239.0) internal successors, (10277), 43 states have internal predecessors, (10277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:53,584 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 239.0) internal successors, (10277), 43 states have internal predecessors, (10277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:53,584 INFO L175 Difference]: Start difference. First operand has 238 places, 272 transitions, 876 flow. Second operand 42 states and 7250 transitions. [2022-09-20 20:59:53,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 596 transitions, 3112 flow [2022-09-20 20:59:53,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 596 transitions, 3094 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:59:53,616 INFO L231 Difference]: Finished difference. Result has 295 places, 374 transitions, 1763 flow [2022-09-20 20:59:53,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1763, PETRI_PLACES=295, PETRI_TRANSITIONS=374} [2022-09-20 20:59:53,619 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 86 predicate places. [2022-09-20 20:59:53,619 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 374 transitions, 1763 flow [2022-09-20 20:59:53,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:53,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:53,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:53,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:59:53,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:53,627 INFO L85 PathProgramCache]: Analyzing trace with hash -194071383, now seen corresponding path program 2 times [2022-09-20 20:59:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:53,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200403372] [2022-09-20 20:59:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:53,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:54,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:54,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200403372] [2022-09-20 20:59:54,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200403372] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:54,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:54,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 20:59:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135541419] [2022-09-20 20:59:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:54,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 20:59:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 20:59:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-09-20 20:59:54,355 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 239 [2022-09-20 20:59:54,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 374 transitions, 1763 flow. Second operand has 27 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:54,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:54,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 239 [2022-09-20 20:59:54,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:58,506 INFO L130 PetriNetUnfolder]: 6412/12713 cut-off events. [2022-09-20 20:59:58,507 INFO L131 PetriNetUnfolder]: For 33314/33314 co-relation queries the response was YES. [2022-09-20 20:59:58,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40492 conditions, 12713 events. 6412/12713 cut-off events. For 33314/33314 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 99153 event pairs, 1701 based on Foata normal form. 1/11698 useless extension candidates. Maximal degree in co-relation 40431. Up to 5617 conditions per place. [2022-09-20 20:59:58,646 INFO L137 encePairwiseOnDemand]: 213/239 looper letters, 448 selfloop transitions, 184 changer transitions 22/780 dead transitions. [2022-09-20 20:59:58,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 780 transitions, 5318 flow [2022-09-20 20:59:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-09-20 20:59:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-09-20 20:59:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8547 transitions. [2022-09-20 20:59:58,657 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7012060054147182 [2022-09-20 20:59:58,657 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8547 transitions. [2022-09-20 20:59:58,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8547 transitions. [2022-09-20 20:59:58,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:58,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8547 transitions. [2022-09-20 20:59:58,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 167.58823529411765) internal successors, (8547), 51 states have internal predecessors, (8547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:58,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 239.0) internal successors, (12428), 52 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:58,682 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 239.0) internal successors, (12428), 52 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:58,682 INFO L175 Difference]: Start difference. First operand has 295 places, 374 transitions, 1763 flow. Second operand 51 states and 8547 transitions. [2022-09-20 20:59:58,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 780 transitions, 5318 flow [2022-09-20 20:59:58,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 780 transitions, 4994 flow, removed 85 selfloop flow, removed 9 redundant places. [2022-09-20 20:59:58,803 INFO L231 Difference]: Finished difference. Result has 351 places, 520 transitions, 3184 flow [2022-09-20 20:59:58,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3184, PETRI_PLACES=351, PETRI_TRANSITIONS=520} [2022-09-20 20:59:58,804 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 142 predicate places. [2022-09-20 20:59:58,804 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 520 transitions, 3184 flow [2022-09-20 20:59:58,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:58,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:58,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:59:58,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:59:58,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 20:59:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:58,806 INFO L85 PathProgramCache]: Analyzing trace with hash 337108559, now seen corresponding path program 2 times [2022-09-20 20:59:58,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:58,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570212216] [2022-09-20 20:59:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:59:59,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:59,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570212216] [2022-09-20 20:59:59,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570212216] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:59,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:59,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-20 20:59:59,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652407240] [2022-09-20 20:59:59,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:59,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-20 20:59:59,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-20 20:59:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-09-20 20:59:59,367 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-09-20 20:59:59,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 520 transitions, 3184 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:59:59,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:59,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-09-20 20:59:59,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:03,734 INFO L130 PetriNetUnfolder]: 7411/14963 cut-off events. [2022-09-20 21:00:03,734 INFO L131 PetriNetUnfolder]: For 57899/57902 co-relation queries the response was YES. [2022-09-20 21:00:03,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53495 conditions, 14963 events. 7411/14963 cut-off events. For 57899/57902 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 123172 event pairs, 1479 based on Foata normal form. 4/13741 useless extension candidates. Maximal degree in co-relation 53408. Up to 6184 conditions per place. [2022-09-20 21:00:03,906 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 500 selfloop transitions, 256 changer transitions 22/909 dead transitions. [2022-09-20 21:00:03,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 909 transitions, 7295 flow [2022-09-20 21:00:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 21:00:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 21:00:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 7110 transitions. [2022-09-20 21:00:03,913 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7255842432901316 [2022-09-20 21:00:03,913 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 7110 transitions. [2022-09-20 21:00:03,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 7110 transitions. [2022-09-20 21:00:03,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:03,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 7110 transitions. [2022-09-20 21:00:03,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 173.41463414634146) internal successors, (7110), 41 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:03,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:03,932 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:03,932 INFO L175 Difference]: Start difference. First operand has 351 places, 520 transitions, 3184 flow. Second operand 41 states and 7110 transitions. [2022-09-20 21:00:03,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 909 transitions, 7295 flow [2022-09-20 21:00:04,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 909 transitions, 6865 flow, removed 213 selfloop flow, removed 5 redundant places. [2022-09-20 21:00:04,381 INFO L231 Difference]: Finished difference. Result has 393 places, 647 transitions, 4695 flow [2022-09-20 21:00:04,381 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4695, PETRI_PLACES=393, PETRI_TRANSITIONS=647} [2022-09-20 21:00:04,382 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 184 predicate places. [2022-09-20 21:00:04,382 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 647 transitions, 4695 flow [2022-09-20 21:00:04,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:04,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:04,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:04,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 21:00:04,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:00:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash -602152533, now seen corresponding path program 3 times [2022-09-20 21:00:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022009978] [2022-09-20 21:00:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:05,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:05,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022009978] [2022-09-20 21:00:05,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022009978] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:05,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:05,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 21:00:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810086999] [2022-09-20 21:00:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:05,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 21:00:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 21:00:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-09-20 21:00:05,166 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 239 [2022-09-20 21:00:05,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 647 transitions, 4695 flow. Second operand has 27 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:05,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:05,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 239 [2022-09-20 21:00:05,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:11,682 INFO L130 PetriNetUnfolder]: 8878/17928 cut-off events. [2022-09-20 21:00:11,682 INFO L131 PetriNetUnfolder]: For 80066/80069 co-relation queries the response was YES. [2022-09-20 21:00:11,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66707 conditions, 17928 events. 8878/17928 cut-off events. For 80066/80069 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 151949 event pairs, 1854 based on Foata normal form. 1/16478 useless extension candidates. Maximal degree in co-relation 66601. Up to 7076 conditions per place. [2022-09-20 21:00:11,876 INFO L137 encePairwiseOnDemand]: 213/239 looper letters, 597 selfloop transitions, 406 changer transitions 22/1153 dead transitions. [2022-09-20 21:00:11,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1153 transitions, 10451 flow [2022-09-20 21:00:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-20 21:00:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-20 21:00:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 9229 transitions. [2022-09-20 21:00:11,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7020920502092051 [2022-09-20 21:00:11,883 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 9229 transitions. [2022-09-20 21:00:11,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 9229 transitions. [2022-09-20 21:00:11,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:11,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 9229 transitions. [2022-09-20 21:00:11,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 167.8) internal successors, (9229), 55 states have internal predecessors, (9229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:11,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 239.0) internal successors, (13384), 56 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:11,908 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 239.0) internal successors, (13384), 56 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:11,909 INFO L175 Difference]: Start difference. First operand has 393 places, 647 transitions, 4695 flow. Second operand 55 states and 9229 transitions. [2022-09-20 21:00:11,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1153 transitions, 10451 flow [2022-09-20 21:00:12,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1153 transitions, 9966 flow, removed 209 selfloop flow, removed 7 redundant places. [2022-09-20 21:00:12,424 INFO L231 Difference]: Finished difference. Result has 464 places, 870 transitions, 7879 flow [2022-09-20 21:00:12,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=7879, PETRI_PLACES=464, PETRI_TRANSITIONS=870} [2022-09-20 21:00:12,425 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 255 predicate places. [2022-09-20 21:00:12,425 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 870 transitions, 7879 flow [2022-09-20 21:00:12,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:12,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:12,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 21:00:12,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:00:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1205990944, now seen corresponding path program 2 times [2022-09-20 21:00:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:12,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410159690] [2022-09-20 21:00:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:12,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:13,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:13,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410159690] [2022-09-20 21:00:13,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410159690] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:13,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:13,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-09-20 21:00:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57141136] [2022-09-20 21:00:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:13,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-09-20 21:00:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-09-20 21:00:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2022-09-20 21:00:13,107 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-09-20 21:00:13,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 870 transitions, 7879 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:13,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:13,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-09-20 21:00:13,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:21,273 INFO L130 PetriNetUnfolder]: 10944/21764 cut-off events. [2022-09-20 21:00:21,273 INFO L131 PetriNetUnfolder]: For 160599/160599 co-relation queries the response was YES. [2022-09-20 21:00:21,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90670 conditions, 21764 events. 10944/21764 cut-off events. For 160599/160599 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 186972 event pairs, 2154 based on Foata normal form. 1/20053 useless extension candidates. Maximal degree in co-relation 90528. Up to 8173 conditions per place. [2022-09-20 21:00:21,656 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 856 selfloop transitions, 547 changer transitions 22/1548 dead transitions. [2022-09-20 21:00:21,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1548 transitions, 17074 flow [2022-09-20 21:00:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-09-20 21:00:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-09-20 21:00:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 11951 transitions. [2022-09-20 21:00:21,666 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6849888232934028 [2022-09-20 21:00:21,667 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 11951 transitions. [2022-09-20 21:00:21,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 11951 transitions. [2022-09-20 21:00:21,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:21,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 11951 transitions. [2022-09-20 21:00:21,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 163.7123287671233) internal successors, (11951), 73 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:21,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 239.0) internal successors, (17686), 74 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:21,810 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 239.0) internal successors, (17686), 74 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:21,810 INFO L175 Difference]: Start difference. First operand has 464 places, 870 transitions, 7879 flow. Second operand 73 states and 11951 transitions. [2022-09-20 21:00:21,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1548 transitions, 17074 flow [2022-09-20 21:00:22,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1548 transitions, 16350 flow, removed 360 selfloop flow, removed 5 redundant places. [2022-09-20 21:00:22,778 INFO L231 Difference]: Finished difference. Result has 566 places, 1179 transitions, 12906 flow [2022-09-20 21:00:22,779 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=7199, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=12906, PETRI_PLACES=566, PETRI_TRANSITIONS=1179} [2022-09-20 21:00:22,780 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 357 predicate places. [2022-09-20 21:00:22,780 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1179 transitions, 12906 flow [2022-09-20 21:00:22,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:22,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:22,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 21:00:22,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:00:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash 333733419, now seen corresponding path program 2 times [2022-09-20 21:00:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:22,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428356784] [2022-09-20 21:00:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:23,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428356784] [2022-09-20 21:00:23,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428356784] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:23,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:23,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-09-20 21:00:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020316071] [2022-09-20 21:00:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:23,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-09-20 21:00:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-09-20 21:00:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2022-09-20 21:00:23,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-09-20 21:00:23,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1179 transitions, 12906 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:23,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:23,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-09-20 21:00:23,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:34,102 INFO L130 PetriNetUnfolder]: 12904/25500 cut-off events. [2022-09-20 21:00:34,102 INFO L131 PetriNetUnfolder]: For 349254/349254 co-relation queries the response was YES. [2022-09-20 21:00:34,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121767 conditions, 25500 events. 12904/25500 cut-off events. For 349254/349254 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 223653 event pairs, 2525 based on Foata normal form. 1/23547 useless extension candidates. Maximal degree in co-relation 121578. Up to 9536 conditions per place. [2022-09-20 21:00:34,751 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 930 selfloop transitions, 770 changer transitions 22/1845 dead transitions. [2022-09-20 21:00:34,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 1845 transitions, 23523 flow [2022-09-20 21:00:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-09-20 21:00:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-09-20 21:00:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 10071 transitions. [2022-09-20 21:00:34,759 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6907881198984841 [2022-09-20 21:00:34,759 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 10071 transitions. [2022-09-20 21:00:34,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 10071 transitions. [2022-09-20 21:00:34,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:34,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 10071 transitions. [2022-09-20 21:00:34,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 165.0983606557377) internal successors, (10071), 61 states have internal predecessors, (10071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:34,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 239.0) internal successors, (14818), 62 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:34,781 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 239.0) internal successors, (14818), 62 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:34,781 INFO L175 Difference]: Start difference. First operand has 566 places, 1179 transitions, 12906 flow. Second operand 61 states and 10071 transitions. [2022-09-20 21:00:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 1845 transitions, 23523 flow [2022-09-20 21:00:36,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 1845 transitions, 21962 flow, removed 775 selfloop flow, removed 5 redundant places. [2022-09-20 21:00:37,004 INFO L231 Difference]: Finished difference. Result has 642 places, 1501 transitions, 18101 flow [2022-09-20 21:00:37,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=11453, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=18101, PETRI_PLACES=642, PETRI_TRANSITIONS=1501} [2022-09-20 21:00:37,005 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 433 predicate places. [2022-09-20 21:00:37,005 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 1501 transitions, 18101 flow [2022-09-20 21:00:37,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:37,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:37,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 21:00:37,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:00:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 867592593, now seen corresponding path program 1 times [2022-09-20 21:00:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:37,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516854099] [2022-09-20 21:00:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:37,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516854099] [2022-09-20 21:00:37,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516854099] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:37,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:37,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-20 21:00:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72772947] [2022-09-20 21:00:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:37,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-20 21:00:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-20 21:00:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-09-20 21:00:37,521 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-09-20 21:00:37,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 1501 transitions, 18101 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:37,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:37,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-09-20 21:00:37,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:48,973 INFO L130 PetriNetUnfolder]: 14294/28219 cut-off events. [2022-09-20 21:00:48,973 INFO L131 PetriNetUnfolder]: For 468925/468974 co-relation queries the response was YES. [2022-09-20 21:00:49,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142186 conditions, 28219 events. 14294/28219 cut-off events. For 468925/468974 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 253041 event pairs, 2733 based on Foata normal form. 17/26040 useless extension candidates. Maximal degree in co-relation 141965. Up to 10632 conditions per place. [2022-09-20 21:00:49,602 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 1078 selfloop transitions, 861 changer transitions 22/2104 dead transitions. [2022-09-20 21:00:49,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 704 places, 2104 transitions, 28652 flow [2022-09-20 21:00:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-09-20 21:00:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-09-20 21:00:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 11176 transitions. [2022-09-20 21:00:49,616 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7194077888638558 [2022-09-20 21:00:49,616 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 11176 transitions. [2022-09-20 21:00:49,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 11176 transitions. [2022-09-20 21:00:49,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:49,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 11176 transitions. [2022-09-20 21:00:49,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 171.93846153846152) internal successors, (11176), 65 states have internal predecessors, (11176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:49,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:49,651 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:49,651 INFO L175 Difference]: Start difference. First operand has 642 places, 1501 transitions, 18101 flow. Second operand 65 states and 11176 transitions. [2022-09-20 21:00:49,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 704 places, 2104 transitions, 28652 flow [2022-09-20 21:00:52,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 2104 transitions, 26877 flow, removed 871 selfloop flow, removed 7 redundant places. [2022-09-20 21:00:52,746 INFO L231 Difference]: Finished difference. Result has 721 places, 1725 transitions, 22361 flow [2022-09-20 21:00:52,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=16625, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=660, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=22361, PETRI_PLACES=721, PETRI_TRANSITIONS=1725} [2022-09-20 21:00:52,748 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 512 predicate places. [2022-09-20 21:00:52,748 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1725 transitions, 22361 flow [2022-09-20 21:00:52,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:52,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:52,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 21:00:52,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:00:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 137385486, now seen corresponding path program 1 times [2022-09-20 21:00:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:52,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446429029] [2022-09-20 21:00:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:52,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:53,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446429029] [2022-09-20 21:00:53,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446429029] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:53,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:53,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-09-20 21:00:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011936455] [2022-09-20 21:00:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-09-20 21:00:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-09-20 21:00:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2022-09-20 21:00:53,346 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-09-20 21:00:53,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1725 transitions, 22361 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:00:53,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:53,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-09-20 21:00:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:07,463 INFO L130 PetriNetUnfolder]: 16942/33092 cut-off events. [2022-09-20 21:01:07,463 INFO L131 PetriNetUnfolder]: For 589492/589492 co-relation queries the response was YES. [2022-09-20 21:01:08,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176978 conditions, 33092 events. 16942/33092 cut-off events. For 589492/589492 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 299483 event pairs, 3244 based on Foata normal form. 1/30678 useless extension candidates. Maximal degree in co-relation 176725. Up to 12944 conditions per place. [2022-09-20 21:01:08,862 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 1256 selfloop transitions, 1165 changer transitions 22/2566 dead transitions. [2022-09-20 21:01:08,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 781 places, 2566 transitions, 39321 flow [2022-09-20 21:01:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-09-20 21:01:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-09-20 21:01:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10629 transitions. [2022-09-20 21:01:08,869 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6841969745735436 [2022-09-20 21:01:08,869 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10629 transitions. [2022-09-20 21:01:08,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10629 transitions. [2022-09-20 21:01:08,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:08,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10629 transitions. [2022-09-20 21:01:08,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 163.52307692307693) internal successors, (10629), 65 states have internal predecessors, (10629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:08,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:08,890 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:08,890 INFO L175 Difference]: Start difference. First operand has 721 places, 1725 transitions, 22361 flow. Second operand 65 states and 10629 transitions. [2022-09-20 21:01:08,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 781 places, 2566 transitions, 39321 flow [2022-09-20 21:01:15,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 2566 transitions, 37064 flow, removed 714 selfloop flow, removed 12 redundant places. [2022-09-20 21:01:15,252 INFO L231 Difference]: Finished difference. Result has 816 places, 2267 transitions, 33785 flow [2022-09-20 21:01:15,254 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=20446, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=666, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=33785, PETRI_PLACES=816, PETRI_TRANSITIONS=2267} [2022-09-20 21:01:15,255 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 607 predicate places. [2022-09-20 21:01:15,255 INFO L495 AbstractCegarLoop]: Abstraction has has 816 places, 2267 transitions, 33785 flow [2022-09-20 21:01:15,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:15,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:15,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:15,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 21:01:15,257 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:01:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:15,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1513761439, now seen corresponding path program 2 times [2022-09-20 21:01:15,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:15,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982367177] [2022-09-20 21:01:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:15,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:15,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:15,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982367177] [2022-09-20 21:01:15,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982367177] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:15,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:15,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-09-20 21:01:15,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180896061] [2022-09-20 21:01:15,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:15,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-20 21:01:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:15,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-20 21:01:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2022-09-20 21:01:15,817 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 239 [2022-09-20 21:01:15,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 2267 transitions, 33785 flow. Second operand has 28 states, 28 states have (on average 161.14285714285714) internal successors, (4512), 28 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:15,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:15,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 239 [2022-09-20 21:01:15,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:33,417 INFO L130 PetriNetUnfolder]: 18565/36111 cut-off events. [2022-09-20 21:01:33,418 INFO L131 PetriNetUnfolder]: For 815585/815592 co-relation queries the response was YES. [2022-09-20 21:01:35,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202825 conditions, 36111 events. 18565/36111 cut-off events. For 815585/815592 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 330283 event pairs, 3299 based on Foata normal form. 1/33410 useless extension candidates. Maximal degree in co-relation 202518. Up to 13619 conditions per place. [2022-09-20 21:01:35,394 INFO L137 encePairwiseOnDemand]: 211/239 looper letters, 1622 selfloop transitions, 1045 changer transitions 22/2825 dead transitions. [2022-09-20 21:01:35,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 2825 transitions, 46126 flow [2022-09-20 21:01:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-09-20 21:01:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-09-20 21:01:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 11542 transitions. [2022-09-20 21:01:35,400 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6998969134679522 [2022-09-20 21:01:35,401 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 11542 transitions. [2022-09-20 21:01:35,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 11542 transitions. [2022-09-20 21:01:35,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:35,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 11542 transitions. [2022-09-20 21:01:35,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 167.2753623188406) internal successors, (11542), 69 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:35,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 239.0) internal successors, (16730), 70 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:35,426 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 239.0) internal successors, (16730), 70 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:35,426 INFO L175 Difference]: Start difference. First operand has 816 places, 2267 transitions, 33785 flow. Second operand 69 states and 11542 transitions. [2022-09-20 21:01:35,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 2825 transitions, 46126 flow [2022-09-20 21:01:43,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 2825 transitions, 44114 flow, removed 1004 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:43,872 INFO L231 Difference]: Finished difference. Result has 888 places, 2489 transitions, 39229 flow [2022-09-20 21:01:43,874 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=31829, PETRI_DIFFERENCE_MINUEND_PLACES=808, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=39229, PETRI_PLACES=888, PETRI_TRANSITIONS=2489} [2022-09-20 21:01:43,875 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 679 predicate places. [2022-09-20 21:01:43,875 INFO L495 AbstractCegarLoop]: Abstraction has has 888 places, 2489 transitions, 39229 flow [2022-09-20 21:01:43,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 161.14285714285714) internal successors, (4512), 28 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:43,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:43,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:43,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 21:01:43,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:01:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 83028367, now seen corresponding path program 1 times [2022-09-20 21:01:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:43,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269890616] [2022-09-20 21:01:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269890616] [2022-09-20 21:01:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269890616] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:44,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:44,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-20 21:01:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013525202] [2022-09-20 21:01:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-20 21:01:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-20 21:01:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2022-09-20 21:01:44,325 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-09-20 21:01:44,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 888 places, 2489 transitions, 39229 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:44,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:44,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-09-20 21:01:44,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:03,811 INFO L130 PetriNetUnfolder]: 20092/39016 cut-off events. [2022-09-20 21:02:03,811 INFO L131 PetriNetUnfolder]: For 942649/942698 co-relation queries the response was YES. [2022-09-20 21:02:05,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228627 conditions, 39016 events. 20092/39016 cut-off events. For 942649/942698 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 360434 event pairs, 4950 based on Foata normal form. 9/36058 useless extension candidates. Maximal degree in co-relation 228305. Up to 16423 conditions per place. [2022-09-20 21:02:06,037 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 1774 selfloop transitions, 1397 changer transitions 15/3335 dead transitions. [2022-09-20 21:02:06,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 3335 transitions, 60482 flow [2022-09-20 21:02:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-09-20 21:02:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-09-20 21:02:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 11454 transitions. [2022-09-20 21:02:06,042 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7152938237681884 [2022-09-20 21:02:06,042 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 11454 transitions. [2022-09-20 21:02:06,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 11454 transitions. [2022-09-20 21:02:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:06,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 11454 transitions. [2022-09-20 21:02:06,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 170.955223880597) internal successors, (11454), 67 states have internal predecessors, (11454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:02:06,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 239.0) internal successors, (16252), 68 states have internal predecessors, (16252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:02:06,061 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 239.0) internal successors, (16252), 68 states have internal predecessors, (16252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:02:06,061 INFO L175 Difference]: Start difference. First operand has 888 places, 2489 transitions, 39229 flow. Second operand 67 states and 11454 transitions. [2022-09-20 21:02:06,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 3335 transitions, 60482 flow [2022-09-20 21:02:15,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 3335 transitions, 58324 flow, removed 1061 selfloop flow, removed 7 redundant places. [2022-09-20 21:02:15,761 INFO L231 Difference]: Finished difference. Result has 971 places, 3022 transitions, 53103 flow [2022-09-20 21:02:15,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=37139, PETRI_DIFFERENCE_MINUEND_PLACES=877, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=897, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=53103, PETRI_PLACES=971, PETRI_TRANSITIONS=3022} [2022-09-20 21:02:15,763 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 762 predicate places. [2022-09-20 21:02:15,763 INFO L495 AbstractCegarLoop]: Abstraction has has 971 places, 3022 transitions, 53103 flow [2022-09-20 21:02:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:02:15,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:15,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:02:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 21:02:15,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 21:02:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash -388504094, now seen corresponding path program 1 times [2022-09-20 21:02:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49189245] [2022-09-20 21:02:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:16,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:16,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49189245] [2022-09-20 21:02:16,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49189245] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:02:16,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:02:16,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-09-20 21:02:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395720515] [2022-09-20 21:02:16,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:02:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-09-20 21:02:16,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-09-20 21:02:16,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2022-09-20 21:02:16,367 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-09-20 21:02:16,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 971 places, 3022 transitions, 53103 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:02:16,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:16,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-09-20 21:02:16,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand