/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:50:26,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:50:26,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:50:26,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:50:26,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:50:26,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:50:26,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:50:26,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:50:26,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:50:26,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:50:26,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:50:26,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:50:26,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:50:26,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:50:26,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:50:26,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:50:26,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:50:26,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:50:26,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:50:26,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:50:26,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:50:26,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:50:26,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:50:26,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:50:26,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 22:50:26,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:50:26,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:50:26,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:50:26,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:50:26,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:50:26,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:50:26,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:50:26,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:50:26,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:50:26,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:50:26,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:50:26,361 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 22:50:26,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:50:26,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:50:26,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:50:26,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:50:26,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:50:26,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:50:26,385 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:50:26,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:50:26,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:50:26,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:50:26,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:50:26,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:50:26,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:50:26,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:50:26,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:50:26,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:50:26,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:50:26,388 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:50:26,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:50:26,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:50:26,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:50:26,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:50:26,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:50:26,655 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:50:26,657 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:50:26,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2022-09-20 22:50:26,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbeedb962/62afdc6d7ef24875838b7f074b441cd1/FLAGffbe75a2f [2022-09-20 22:50:27,105 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:50:27,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2022-09-20 22:50:27,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbeedb962/62afdc6d7ef24875838b7f074b441cd1/FLAGffbe75a2f [2022-09-20 22:50:27,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbeedb962/62afdc6d7ef24875838b7f074b441cd1 [2022-09-20 22:50:27,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:50:27,478 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:50:27,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:50:27,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:50:27,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:50:27,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4a76c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27, skipping insertion in model container [2022-09-20 22:50:27,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:50:27,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:50:27,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-09-20 22:50:27,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:50:27,673 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:50:27,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-09-20 22:50:27,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:50:27,717 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:50:27,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27 WrapperNode [2022-09-20 22:50:27,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:50:27,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:50:27,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:50:27,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:50:27,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,781 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 369 [2022-09-20 22:50:27,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:50:27,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:50:27,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:50:27,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:50:27,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:50:27,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:50:27,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:50:27,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:50:27,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (1/1) ... [2022-09-20 22:50:27,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:50:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:50:27,863 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 22:50:27,869 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 22:50:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:50:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:50:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:50:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:50:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:50:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:50:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:50:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:50:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 22:50:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 22:50:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:50:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 22:50:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:50:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:50:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:50:27,897 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 22:50:27,982 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:50:27,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:50:28,491 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:50:28,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:50:28,502 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-20 22:50:28,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:50:28 BoogieIcfgContainer [2022-09-20 22:50:28,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:50:28,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:50:28,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:50:28,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:50:28,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:50:27" (1/3) ... [2022-09-20 22:50:28,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f2916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:50:28, skipping insertion in model container [2022-09-20 22:50:28,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:50:27" (2/3) ... [2022-09-20 22:50:28,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f2916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:50:28, skipping insertion in model container [2022-09-20 22:50:28,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:50:28" (3/3) ... [2022-09-20 22:50:28,512 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-09-20 22:50:28,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:50:28,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:50:28,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:50:28,625 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 22:50:28,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 465 transitions, 954 flow [2022-09-20 22:50:28,930 INFO L130 PetriNetUnfolder]: 44/462 cut-off events. [2022-09-20 22:50:28,930 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 22:50:28,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 462 events. 44/462 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1306 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 334. Up to 2 conditions per place. [2022-09-20 22:50:28,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 465 transitions, 954 flow [2022-09-20 22:50:28,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 451 transitions, 920 flow [2022-09-20 22:50:28,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:50:28,976 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;@6b330702, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:50:28,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 22:50:29,057 INFO L130 PetriNetUnfolder]: 44/450 cut-off events. [2022-09-20 22:50:29,057 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 22:50:29,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:29,058 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, 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 22:50:29,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2115250233, now seen corresponding path program 1 times [2022-09-20 22:50:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:29,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540756829] [2022-09-20 22:50:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:29,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:50:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:29,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540756829] [2022-09-20 22:50:29,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540756829] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:29,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:29,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:50:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517966846] [2022-09-20 22:50:29,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:29,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 22:50:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 22:50:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 22:50:29,357 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 465 [2022-09-20 22:50:29,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 451 transitions, 920 flow. Second operand has 2 states, 2 states have (on average 443.5) internal successors, (887), 2 states have internal predecessors, (887), 0 states have call successors, (0), 0 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 22:50:29,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:29,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 465 [2022-09-20 22:50:29,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:29,524 INFO L130 PetriNetUnfolder]: 25/432 cut-off events. [2022-09-20 22:50:29,524 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-09-20 22:50:29,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 432 events. 25/432 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1283 event pairs, 0 based on Foata normal form. 32/424 useless extension candidates. Maximal degree in co-relation 323. Up to 7 conditions per place. [2022-09-20 22:50:29,532 INFO L137 encePairwiseOnDemand]: 446/465 looper letters, 6 selfloop transitions, 0 changer transitions 3/432 dead transitions. [2022-09-20 22:50:29,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 432 transitions, 894 flow [2022-09-20 22:50:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 22:50:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 22:50:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-09-20 22:50:29,550 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9709677419354839 [2022-09-20 22:50:29,550 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-09-20 22:50:29,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-09-20 22:50:29,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:29,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-09-20 22:50:29,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 0 states have call successors, (0), 0 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 22:50:29,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:50:29,572 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:50:29,573 INFO L175 Difference]: Start difference. First operand has 417 places, 451 transitions, 920 flow. Second operand 2 states and 903 transitions. [2022-09-20 22:50:29,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 432 transitions, 894 flow [2022-09-20 22:50:29,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 432 transitions, 882 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 22:50:29,590 INFO L231 Difference]: Finished difference. Result has 412 places, 429 transitions, 864 flow [2022-09-20 22:50:29,592 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=864, PETRI_PLACES=412, PETRI_TRANSITIONS=429} [2022-09-20 22:50:29,598 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, -5 predicate places. [2022-09-20 22:50:29,598 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 864 flow [2022-09-20 22:50:29,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 443.5) internal successors, (887), 2 states have internal predecessors, (887), 0 states have call successors, (0), 0 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 22:50:29,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:29,600 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, 1, 1, 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 22:50:29,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:50:29,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:29,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1683381110, now seen corresponding path program 1 times [2022-09-20 22:50:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:29,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649207750] [2022-09-20 22:50:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:29,812 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 22:50:29,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:29,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649207750] [2022-09-20 22:50:29,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649207750] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:29,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:29,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:50:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241398414] [2022-09-20 22:50:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:29,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:50:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:50:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:50:29,820 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-09-20 22:50:29,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 429 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:29,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:29,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-09-20 22:50:29,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:30,103 INFO L130 PetriNetUnfolder]: 92/809 cut-off events. [2022-09-20 22:50:30,105 INFO L131 PetriNetUnfolder]: For 26/39 co-relation queries the response was YES. [2022-09-20 22:50:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 809 events. 92/809 cut-off events. For 26/39 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4258 event pairs, 20 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 969. Up to 67 conditions per place. [2022-09-20 22:50:30,136 INFO L137 encePairwiseOnDemand]: 453/465 looper letters, 31 selfloop transitions, 11 changer transitions 0/446 dead transitions. [2022-09-20 22:50:30,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 446 transitions, 988 flow [2022-09-20 22:50:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:50:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:50:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2022-09-20 22:50:30,141 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9263440860215054 [2022-09-20 22:50:30,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2022-09-20 22:50:30,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2022-09-20 22:50:30,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:30,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2022-09-20 22:50:30,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:30,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 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 22:50:30,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 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 22:50:30,150 INFO L175 Difference]: Start difference. First operand has 412 places, 429 transitions, 864 flow. Second operand 4 states and 1723 transitions. [2022-09-20 22:50:30,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 446 transitions, 988 flow [2022-09-20 22:50:30,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 446 transitions, 988 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:50:30,187 INFO L231 Difference]: Finished difference. Result has 415 places, 435 transitions, 934 flow [2022-09-20 22:50:30,188 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=934, PETRI_PLACES=415, PETRI_TRANSITIONS=435} [2022-09-20 22:50:30,189 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, -2 predicate places. [2022-09-20 22:50:30,189 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 435 transitions, 934 flow [2022-09-20 22:50:30,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:30,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:30,191 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, 1, 1, 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 22:50:30,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:50:30,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash -171889990, now seen corresponding path program 1 times [2022-09-20 22:50:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:30,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026449098] [2022-09-20 22:50:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:30,290 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 22:50:30,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026449098] [2022-09-20 22:50:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026449098] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:30,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:30,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:50:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832039230] [2022-09-20 22:50:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:30,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:50:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:50:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:50:30,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-09-20 22:50:30,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 435 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:50:30,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:30,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-09-20 22:50:30,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:36,608 INFO L130 PetriNetUnfolder]: 7803/37081 cut-off events. [2022-09-20 22:50:36,609 INFO L131 PetriNetUnfolder]: For 2812/2958 co-relation queries the response was YES. [2022-09-20 22:50:37,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49458 conditions, 37081 events. 7803/37081 cut-off events. For 2812/2958 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 535650 event pairs, 2880 based on Foata normal form. 0/31397 useless extension candidates. Maximal degree in co-relation 49452. Up to 4495 conditions per place. [2022-09-20 22:50:37,310 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 72 selfloop transitions, 2 changer transitions 0/467 dead transitions. [2022-09-20 22:50:37,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 467 transitions, 1159 flow [2022-09-20 22:50:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:50:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:50:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1285 transitions. [2022-09-20 22:50:37,314 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.921146953405018 [2022-09-20 22:50:37,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1285 transitions. [2022-09-20 22:50:37,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1285 transitions. [2022-09-20 22:50:37,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:37,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1285 transitions. [2022-09-20 22:50:37,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 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 22:50:37,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:50:37,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:50:37,324 INFO L175 Difference]: Start difference. First operand has 415 places, 435 transitions, 934 flow. Second operand 3 states and 1285 transitions. [2022-09-20 22:50:37,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 467 transitions, 1159 flow [2022-09-20 22:50:37,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 467 transitions, 1159 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:50:37,407 INFO L231 Difference]: Finished difference. Result has 419 places, 436 transitions, 948 flow [2022-09-20 22:50:37,408 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=948, PETRI_PLACES=419, PETRI_TRANSITIONS=436} [2022-09-20 22:50:37,410 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 2 predicate places. [2022-09-20 22:50:37,410 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 436 transitions, 948 flow [2022-09-20 22:50:37,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:50:37,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:37,412 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, 1, 1, 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 22:50:37,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:50:37,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash 871322900, now seen corresponding path program 1 times [2022-09-20 22:50:37,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:37,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031872094] [2022-09-20 22:50:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:37,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:37,518 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 22:50:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:37,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031872094] [2022-09-20 22:50:37,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031872094] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:37,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:37,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:50:37,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836309557] [2022-09-20 22:50:37,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:37,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:50:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:50:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:50:37,527 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-09-20 22:50:37,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 436 transitions, 948 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:50:37,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:37,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-09-20 22:50:37,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:47,561 INFO L130 PetriNetUnfolder]: 15456/70925 cut-off events. [2022-09-20 22:50:47,562 INFO L131 PetriNetUnfolder]: For 5945/5951 co-relation queries the response was YES. [2022-09-20 22:50:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98507 conditions, 70925 events. 15456/70925 cut-off events. For 5945/5951 co-relation queries the response was YES. Maximal size of possible extension queue 2532. Compared 1129440 event pairs, 9803 based on Foata normal form. 0/60540 useless extension candidates. Maximal degree in co-relation 98499. Up to 8356 conditions per place. [2022-09-20 22:50:48,367 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/470 dead transitions. [2022-09-20 22:50:48,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 470 transitions, 1185 flow [2022-09-20 22:50:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:50:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:50:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-09-20 22:50:48,371 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9225806451612903 [2022-09-20 22:50:48,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-09-20 22:50:48,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-09-20 22:50:48,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:48,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-09-20 22:50:48,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 22:50:48,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:50:48,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:50:48,379 INFO L175 Difference]: Start difference. First operand has 419 places, 436 transitions, 948 flow. Second operand 3 states and 1287 transitions. [2022-09-20 22:50:48,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 470 transitions, 1185 flow [2022-09-20 22:50:48,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 470 transitions, 1181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:50:48,600 INFO L231 Difference]: Finished difference. Result has 422 places, 437 transitions, 960 flow [2022-09-20 22:50:48,600 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=960, PETRI_PLACES=422, PETRI_TRANSITIONS=437} [2022-09-20 22:50:48,601 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 5 predicate places. [2022-09-20 22:50:48,601 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 437 transitions, 960 flow [2022-09-20 22:50:48,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:50:48,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:48,602 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, 1, 1, 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 22:50:48,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:50:48,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1410153556, now seen corresponding path program 1 times [2022-09-20 22:50:48,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:48,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592847819] [2022-09-20 22:50:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:48,643 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 22:50:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:48,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592847819] [2022-09-20 22:50:48,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592847819] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:48,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:48,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:50:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236135041] [2022-09-20 22:50:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:50:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:50:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:50:48,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-09-20 22:50:48,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 437 transitions, 960 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:50:48,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:48,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-09-20 22:50:48,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:58,269 INFO L130 PetriNetUnfolder]: 15231/70700 cut-off events. [2022-09-20 22:50:58,269 INFO L131 PetriNetUnfolder]: For 5975/5981 co-relation queries the response was YES. [2022-09-20 22:50:58,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98958 conditions, 70700 events. 15231/70700 cut-off events. For 5975/5981 co-relation queries the response was YES. Maximal size of possible extension queue 2526. Compared 1128394 event pairs, 10027 based on Foata normal form. 225/60661 useless extension candidates. Maximal degree in co-relation 98949. Up to 8356 conditions per place. [2022-09-20 22:50:59,145 INFO L137 encePairwiseOnDemand]: 463/465 looper letters, 74 selfloop transitions, 1 changer transitions 0/469 dead transitions. [2022-09-20 22:50:59,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 469 transitions, 1185 flow [2022-09-20 22:50:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:50:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:50:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1286 transitions. [2022-09-20 22:50:59,150 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9218637992831541 [2022-09-20 22:50:59,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1286 transitions. [2022-09-20 22:50:59,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1286 transitions. [2022-09-20 22:50:59,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:59,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1286 transitions. [2022-09-20 22:50:59,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 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 22:50:59,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:50:59,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:50:59,162 INFO L175 Difference]: Start difference. First operand has 422 places, 437 transitions, 960 flow. Second operand 3 states and 1286 transitions. [2022-09-20 22:50:59,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 469 transitions, 1185 flow [2022-09-20 22:50:59,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 469 transitions, 1184 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:50:59,289 INFO L231 Difference]: Finished difference. Result has 423 places, 436 transitions, 955 flow [2022-09-20 22:50:59,290 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=955, PETRI_PLACES=423, PETRI_TRANSITIONS=436} [2022-09-20 22:50:59,291 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 6 predicate places. [2022-09-20 22:50:59,291 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 436 transitions, 955 flow [2022-09-20 22:50:59,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:50:59,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:59,292 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, 1, 1, 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 22:50:59,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:50:59,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -960955872, now seen corresponding path program 1 times [2022-09-20 22:50:59,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:59,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492162212] [2022-09-20 22:50:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:59,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:59,355 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 22:50:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:59,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492162212] [2022-09-20 22:50:59,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492162212] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:59,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:59,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:50:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592860598] [2022-09-20 22:50:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:59,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:50:59,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:59,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:50:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:50:59,358 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-09-20 22:50:59,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 436 transitions, 955 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:59,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:59,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-09-20 22:50:59,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:59,882 INFO L130 PetriNetUnfolder]: 146/1410 cut-off events. [2022-09-20 22:50:59,883 INFO L131 PetriNetUnfolder]: For 38/110 co-relation queries the response was YES. [2022-09-20 22:50:59,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 1410 events. 146/1410 cut-off events. For 38/110 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9477 event pairs, 40 based on Foata normal form. 2/1284 useless extension candidates. Maximal degree in co-relation 1780. Up to 128 conditions per place. [2022-09-20 22:50:59,927 INFO L137 encePairwiseOnDemand]: 453/465 looper letters, 32 selfloop transitions, 11 changer transitions 0/454 dead transitions. [2022-09-20 22:50:59,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 454 transitions, 1084 flow [2022-09-20 22:50:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:50:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:50:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2022-09-20 22:50:59,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9268817204301075 [2022-09-20 22:50:59,931 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2022-09-20 22:50:59,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2022-09-20 22:50:59,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:59,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2022-09-20 22:50:59,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:59,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 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 22:50:59,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 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 22:50:59,942 INFO L175 Difference]: Start difference. First operand has 423 places, 436 transitions, 955 flow. Second operand 4 states and 1724 transitions. [2022-09-20 22:50:59,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 454 transitions, 1084 flow [2022-09-20 22:50:59,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 454 transitions, 1083 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:50:59,950 INFO L231 Difference]: Finished difference. Result has 428 places, 442 transitions, 1024 flow [2022-09-20 22:50:59,950 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1024, PETRI_PLACES=428, PETRI_TRANSITIONS=442} [2022-09-20 22:50:59,953 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 11 predicate places. [2022-09-20 22:50:59,953 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 442 transitions, 1024 flow [2022-09-20 22:50:59,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:59,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:59,955 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, 1, 1, 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 22:50:59,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:50:59,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1757725580, now seen corresponding path program 1 times [2022-09-20 22:50:59,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:59,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673835228] [2022-09-20 22:50:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:59,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:00,010 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 22:51:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:00,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673835228] [2022-09-20 22:51:00,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673835228] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:00,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:00,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:51:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860826074] [2022-09-20 22:51:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:00,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:51:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:51:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:51:00,019 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-09-20 22:51:00,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 442 transitions, 1024 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:51:00,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:00,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-09-20 22:51:00,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:51:11,027 INFO L130 PetriNetUnfolder]: 16305/78319 cut-off events. [2022-09-20 22:51:11,027 INFO L131 PetriNetUnfolder]: For 8281/8613 co-relation queries the response was YES. [2022-09-20 22:51:11,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107491 conditions, 78319 events. 16305/78319 cut-off events. For 8281/8613 co-relation queries the response was YES. Maximal size of possible extension queue 2286. Compared 1248735 event pairs, 6426 based on Foata normal form. 0/67511 useless extension candidates. Maximal degree in co-relation 107480. Up to 9574 conditions per place. [2022-09-20 22:51:12,262 INFO L137 encePairwiseOnDemand]: 463/465 looper letters, 72 selfloop transitions, 1 changer transitions 0/472 dead transitions. [2022-09-20 22:51:12,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 472 transitions, 1248 flow [2022-09-20 22:51:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:51:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:51:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1284 transitions. [2022-09-20 22:51:12,265 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9204301075268817 [2022-09-20 22:51:12,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1284 transitions. [2022-09-20 22:51:12,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1284 transitions. [2022-09-20 22:51:12,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:12,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1284 transitions. [2022-09-20 22:51:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 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 22:51:12,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:51:12,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:51:12,272 INFO L175 Difference]: Start difference. First operand has 428 places, 442 transitions, 1024 flow. Second operand 3 states and 1284 transitions. [2022-09-20 22:51:12,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 472 transitions, 1248 flow [2022-09-20 22:51:12,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 472 transitions, 1248 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:51:12,415 INFO L231 Difference]: Finished difference. Result has 430 places, 441 transitions, 1021 flow [2022-09-20 22:51:12,415 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1021, PETRI_PLACES=430, PETRI_TRANSITIONS=441} [2022-09-20 22:51:12,416 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 13 predicate places. [2022-09-20 22:51:12,416 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 441 transitions, 1021 flow [2022-09-20 22:51:12,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:51:12,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:12,417 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, 1, 1, 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 22:51:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:51:12,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:51:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:12,417 INFO L85 PathProgramCache]: Analyzing trace with hash 42600858, now seen corresponding path program 1 times [2022-09-20 22:51:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:12,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093111253] [2022-09-20 22:51:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:12,488 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 22:51:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093111253] [2022-09-20 22:51:12,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093111253] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:12,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:12,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:51:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262745966] [2022-09-20 22:51:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:12,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:51:12,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:51:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:51:12,491 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 465 [2022-09-20 22:51:12,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 441 transitions, 1021 flow. Second operand has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 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 22:51:12,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:12,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 465 [2022-09-20 22:51:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:51:12,694 INFO L130 PetriNetUnfolder]: 39/871 cut-off events. [2022-09-20 22:51:12,694 INFO L131 PetriNetUnfolder]: For 52/62 co-relation queries the response was YES. [2022-09-20 22:51:12,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 871 events. 39/871 cut-off events. For 52/62 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4285 event pairs, 0 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 1001. Up to 41 conditions per place. [2022-09-20 22:51:12,716 INFO L137 encePairwiseOnDemand]: 460/465 looper letters, 18 selfloop transitions, 4 changer transitions 0/445 dead transitions. [2022-09-20 22:51:12,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 445 transitions, 1073 flow [2022-09-20 22:51:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:51:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:51:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2158 transitions. [2022-09-20 22:51:12,720 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9281720430107527 [2022-09-20 22:51:12,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2158 transitions. [2022-09-20 22:51:12,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2158 transitions. [2022-09-20 22:51:12,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:12,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2158 transitions. [2022-09-20 22:51:12,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.6) internal successors, (2158), 5 states have internal predecessors, (2158), 0 states have call successors, (0), 0 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 22:51:12,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 22:51:12,730 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 22:51:12,730 INFO L175 Difference]: Start difference. First operand has 430 places, 441 transitions, 1021 flow. Second operand 5 states and 2158 transitions. [2022-09-20 22:51:12,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 445 transitions, 1073 flow [2022-09-20 22:51:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 445 transitions, 1072 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:51:12,738 INFO L231 Difference]: Finished difference. Result has 434 places, 442 transitions, 1036 flow [2022-09-20 22:51:12,739 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1036, PETRI_PLACES=434, PETRI_TRANSITIONS=442} [2022-09-20 22:51:12,740 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 17 predicate places. [2022-09-20 22:51:12,740 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 442 transitions, 1036 flow [2022-09-20 22:51:12,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 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 22:51:12,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:12,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:12,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:51:12,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:51:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1530100840, now seen corresponding path program 1 times [2022-09-20 22:51:12,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:12,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698810048] [2022-09-20 22:51:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 22:51:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698810048] [2022-09-20 22:51:12,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698810048] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:12,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:12,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:51:12,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034353661] [2022-09-20 22:51:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:51:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:51:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:51:12,785 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-09-20 22:51:12,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 442 transitions, 1036 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:51:12,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:12,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-09-20 22:51:12,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:51:29,919 INFO L130 PetriNetUnfolder]: 24644/103332 cut-off events. [2022-09-20 22:51:29,919 INFO L131 PetriNetUnfolder]: For 18926/20064 co-relation queries the response was YES. [2022-09-20 22:51:31,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156099 conditions, 103332 events. 24644/103332 cut-off events. For 18926/20064 co-relation queries the response was YES. Maximal size of possible extension queue 3729. Compared 1688344 event pairs, 7948 based on Foata normal form. 0/91960 useless extension candidates. Maximal degree in co-relation 156086. Up to 16768 conditions per place. [2022-09-20 22:51:31,513 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 75 selfloop transitions, 2 changer transitions 0/476 dead transitions. [2022-09-20 22:51:31,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 476 transitions, 1298 flow [2022-09-20 22:51:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:51:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:51:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1286 transitions. [2022-09-20 22:51:31,517 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9218637992831541 [2022-09-20 22:51:31,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1286 transitions. [2022-09-20 22:51:31,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1286 transitions. [2022-09-20 22:51:31,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:31,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1286 transitions. [2022-09-20 22:51:31,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 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 22:51:31,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:51:31,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 22:51:31,523 INFO L175 Difference]: Start difference. First operand has 434 places, 442 transitions, 1036 flow. Second operand 3 states and 1286 transitions. [2022-09-20 22:51:31,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 476 transitions, 1298 flow [2022-09-20 22:51:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 476 transitions, 1292 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:51:31,762 INFO L231 Difference]: Finished difference. Result has 435 places, 443 transitions, 1044 flow [2022-09-20 22:51:31,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1044, PETRI_PLACES=435, PETRI_TRANSITIONS=443} [2022-09-20 22:51:31,764 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 18 predicate places. [2022-09-20 22:51:31,764 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 443 transitions, 1044 flow [2022-09-20 22:51:31,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 22:51:31,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:31,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:31,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:51:31,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:51:31,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1519632120, now seen corresponding path program 1 times [2022-09-20 22:51:31,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:31,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442801464] [2022-09-20 22:51:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:31,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:51:31,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:31,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442801464] [2022-09-20 22:51:31,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442801464] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:51:31,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101169949] [2022-09-20 22:51:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:31,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:51:31,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:51:31,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:51:31,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 22:51:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:31,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 22:51:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:51:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:51:32,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:51:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:51:32,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101169949] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:51:32,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:51:32,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-09-20 22:51:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602732912] [2022-09-20 22:51:32,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:51:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:51:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:51:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:51:32,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 465 [2022-09-20 22:51:32,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 443 transitions, 1044 flow. Second operand has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 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 22:51:32,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:32,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 465 [2022-09-20 22:51:32,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:51:32,813 INFO L130 PetriNetUnfolder]: 44/1143 cut-off events. [2022-09-20 22:51:32,813 INFO L131 PetriNetUnfolder]: For 83/97 co-relation queries the response was YES. [2022-09-20 22:51:32,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 1143 events. 44/1143 cut-off events. For 83/97 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6630 event pairs, 0 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 1328. Up to 62 conditions per place. [2022-09-20 22:51:32,853 INFO L137 encePairwiseOnDemand]: 457/465 looper letters, 19 selfloop transitions, 11 changer transitions 0/453 dead transitions. [2022-09-20 22:51:32,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 453 transitions, 1126 flow [2022-09-20 22:51:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:51:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:51:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4718 transitions. [2022-09-20 22:51:32,861 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9223851417399804 [2022-09-20 22:51:32,862 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4718 transitions. [2022-09-20 22:51:32,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4718 transitions. [2022-09-20 22:51:32,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:32,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4718 transitions. [2022-09-20 22:51:32,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 428.90909090909093) internal successors, (4718), 11 states have internal predecessors, (4718), 0 states have call successors, (0), 0 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 22:51:32,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 22:51:32,878 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 22:51:32,878 INFO L175 Difference]: Start difference. First operand has 435 places, 443 transitions, 1044 flow. Second operand 11 states and 4718 transitions. [2022-09-20 22:51:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 453 transitions, 1126 flow [2022-09-20 22:51:32,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 453 transitions, 1124 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:51:32,886 INFO L231 Difference]: Finished difference. Result has 447 places, 449 transitions, 1097 flow [2022-09-20 22:51:32,887 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1097, PETRI_PLACES=447, PETRI_TRANSITIONS=449} [2022-09-20 22:51:32,887 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 30 predicate places. [2022-09-20 22:51:32,887 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 449 transitions, 1097 flow [2022-09-20 22:51:32,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 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 22:51:32,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:32,889 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:51:32,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 22:51:33,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-20 22:51:33,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:51:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash 576831228, now seen corresponding path program 2 times [2022-09-20 22:51:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:33,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243429493] [2022-09-20 22:51:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:51:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:33,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243429493] [2022-09-20 22:51:33,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243429493] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:33,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:33,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:51:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514309922] [2022-09-20 22:51:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:33,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:51:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:51:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:51:33,239 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 465 [2022-09-20 22:51:33,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 449 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 413.7142857142857) internal successors, (2896), 7 states have internal predecessors, (2896), 0 states have call successors, (0), 0 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 22:51:33,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:33,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 465 [2022-09-20 22:51:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:51:34,670 INFO L130 PetriNetUnfolder]: 333/3244 cut-off events. [2022-09-20 22:51:34,670 INFO L131 PetriNetUnfolder]: For 313/394 co-relation queries the response was YES. [2022-09-20 22:51:34,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 3244 events. 333/3244 cut-off events. For 313/394 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 30000 event pairs, 135 based on Foata normal form. 8/2898 useless extension candidates. Maximal degree in co-relation 4318. Up to 514 conditions per place. [2022-09-20 22:51:34,839 INFO L137 encePairwiseOnDemand]: 453/465 looper letters, 41 selfloop transitions, 9 changer transitions 4/471 dead transitions. [2022-09-20 22:51:34,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 471 transitions, 1259 flow [2022-09-20 22:51:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:51:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:51:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3335 transitions. [2022-09-20 22:51:34,862 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896505376344086 [2022-09-20 22:51:34,862 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3335 transitions. [2022-09-20 22:51:34,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3335 transitions. [2022-09-20 22:51:34,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:51:34,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3335 transitions. [2022-09-20 22:51:34,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 416.875) internal successors, (3335), 8 states have internal predecessors, (3335), 0 states have call successors, (0), 0 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 22:51:34,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 465.0) internal successors, (4185), 9 states have internal predecessors, (4185), 0 states have call successors, (0), 0 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 22:51:34,884 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 465.0) internal successors, (4185), 9 states have internal predecessors, (4185), 0 states have call successors, (0), 0 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 22:51:34,884 INFO L175 Difference]: Start difference. First operand has 447 places, 449 transitions, 1097 flow. Second operand 8 states and 3335 transitions. [2022-09-20 22:51:34,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 471 transitions, 1259 flow [2022-09-20 22:51:34,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 471 transitions, 1250 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 22:51:34,910 INFO L231 Difference]: Finished difference. Result has 457 places, 455 transitions, 1149 flow [2022-09-20 22:51:34,911 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1149, PETRI_PLACES=457, PETRI_TRANSITIONS=455} [2022-09-20 22:51:34,912 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 40 predicate places. [2022-09-20 22:51:34,912 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 455 transitions, 1149 flow [2022-09-20 22:51:34,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 413.7142857142857) internal successors, (2896), 7 states have internal predecessors, (2896), 0 states have call successors, (0), 0 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 22:51:34,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:34,928 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:51:34,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:51:34,929 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:51:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1288607975, now seen corresponding path program 1 times [2022-09-20 22:51:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:34,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466138569] [2022-09-20 22:51:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:51:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466138569] [2022-09-20 22:51:35,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466138569] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:35,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:35,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:51:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240753701] [2022-09-20 22:51:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:35,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:51:35,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:35,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:51:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:51:35,199 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 465 [2022-09-20 22:51:35,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 455 transitions, 1149 flow. Second operand has 4 states, 4 states have (on average 398.75) internal successors, (1595), 4 states have internal predecessors, (1595), 0 states have call successors, (0), 0 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 22:51:35,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:35,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 465 [2022-09-20 22:51:35,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:52:57,657 INFO L130 PetriNetUnfolder]: 70828/302778 cut-off events. [2022-09-20 22:52:57,657 INFO L131 PetriNetUnfolder]: For 41097/42310 co-relation queries the response was YES. [2022-09-20 22:53:02,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443163 conditions, 302778 events. 70828/302778 cut-off events. For 41097/42310 co-relation queries the response was YES. Maximal size of possible extension queue 8760. Compared 5605934 event pairs, 20654 based on Foata normal form. 308/264769 useless extension candidates. Maximal degree in co-relation 443140. Up to 44601 conditions per place. [2022-09-20 22:53:04,402 INFO L137 encePairwiseOnDemand]: 459/465 looper letters, 129 selfloop transitions, 5 changer transitions 0/535 dead transitions. [2022-09-20 22:53:04,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 535 transitions, 1650 flow [2022-09-20 22:53:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 22:53:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 22:53:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1706 transitions. [2022-09-20 22:53:04,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9172043010752688 [2022-09-20 22:53:04,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1706 transitions. [2022-09-20 22:53:04,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1706 transitions. [2022-09-20 22:53:04,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:53:04,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1706 transitions. [2022-09-20 22:53:04,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 426.5) internal successors, (1706), 4 states have internal predecessors, (1706), 0 states have call successors, (0), 0 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 22:53:04,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 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 22:53:04,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 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 22:53:04,412 INFO L175 Difference]: Start difference. First operand has 457 places, 455 transitions, 1149 flow. Second operand 4 states and 1706 transitions. [2022-09-20 22:53:04,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 535 transitions, 1650 flow [2022-09-20 22:53:05,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 535 transitions, 1641 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 22:53:05,473 INFO L231 Difference]: Finished difference. Result has 458 places, 459 transitions, 1183 flow [2022-09-20 22:53:05,473 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1183, PETRI_PLACES=458, PETRI_TRANSITIONS=459} [2022-09-20 22:53:05,474 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 41 predicate places. [2022-09-20 22:53:05,475 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 459 transitions, 1183 flow [2022-09-20 22:53:05,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 398.75) internal successors, (1595), 4 states have internal predecessors, (1595), 0 states have call successors, (0), 0 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 22:53:05,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:53:05,475 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:53:05,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:53:05,476 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:53:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:53:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash -187493595, now seen corresponding path program 2 times [2022-09-20 22:53:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:53:05,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702449308] [2022-09-20 22:53:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:53:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:53:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:53:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-09-20 22:53:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:53:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702449308] [2022-09-20 22:53:05,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702449308] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:53:05,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:53:05,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:53:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043687324] [2022-09-20 22:53:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:53:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:53:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:53:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:53:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:53:05,618 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 465 [2022-09-20 22:53:05,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 459 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 397.8) internal successors, (1989), 5 states have internal predecessors, (1989), 0 states have call successors, (0), 0 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 22:53:05,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:53:05,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 465 [2022-09-20 22:53:05,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand