/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:01:10,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:01:10,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:01:10,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:01:10,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:01:10,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:01:10,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:01:10,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:01:10,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:01:10,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:01:10,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:01:10,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:01:10,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:01:10,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:01:10,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:01:10,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:01:10,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:01:10,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:01:10,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:01:10,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:01:10,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:01:10,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:01:10,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:01:10,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:01:10,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 21:01:10,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:01:10,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:01:10,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:01:10,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:01:10,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:01:10,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:01:10,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:01:10,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:01:10,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:01:10,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:01:10,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:01:10,710 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 21:01:10,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:01:10,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:01:10,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:01:10,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:01:10,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:01:10,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:01:10,724 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:01:10,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:01:10,724 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:01:10,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:01:10,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:01:10,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:01:10,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:01:10,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:01:10,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:01:10,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:01:10,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:01:10,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:01:10,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:01:10,914 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:01:10,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-09-20 21:01:10,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476c4d62f/3628ce46ee7240caa20271472e70785f/FLAGe2d06b542 [2022-09-20 21:01:11,319 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:01:11,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-09-20 21:01:11,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476c4d62f/3628ce46ee7240caa20271472e70785f/FLAGe2d06b542 [2022-09-20 21:01:11,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476c4d62f/3628ce46ee7240caa20271472e70785f [2022-09-20 21:01:11,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:01:11,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:01:11,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:01:11,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:01:11,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:01:11,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ec790d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11, skipping insertion in model container [2022-09-20 21:01:11,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:01:11,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:01:11,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-09-20 21:01:11,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:01:11,565 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:01:11,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-09-20 21:01:11,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:01:11,595 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:01:11,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11 WrapperNode [2022-09-20 21:01:11,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:01:11,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:01:11,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:01:11,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:01:11,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,634 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-09-20 21:01:11,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:01:11,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:01:11,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:01:11,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:01:11,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:01:11,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:01:11,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:01:11,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:01:11,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (1/1) ... [2022-09-20 21:01:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:01:11,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:11,686 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 21:01:11,691 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 21:01:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:01:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:01:11,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:01:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:01:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:01:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:01:11,714 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 21:01:11,765 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:01:11,766 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:01:11,945 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:01:11,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:01:11,967 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-20 21:01:11,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:01:11 BoogieIcfgContainer [2022-09-20 21:01:11,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:01:11,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:01:11,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:01:11,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:01:11,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:01:11" (1/3) ... [2022-09-20 21:01:11,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18584356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:01:11, skipping insertion in model container [2022-09-20 21:01:11,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:11" (2/3) ... [2022-09-20 21:01:11,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18584356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:01:11, skipping insertion in model container [2022-09-20 21:01:11,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:01:11" (3/3) ... [2022-09-20 21:01:11,981 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-09-20 21:01:11,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:01:11,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:01:11,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:01:12,029 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 21:01:12,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-09-20 21:01:12,087 INFO L130 PetriNetUnfolder]: 8/102 cut-off events. [2022-09-20 21:01:12,087 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:01:12,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-09-20 21:01:12,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2022-09-20 21:01:12,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2022-09-20 21:01:12,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:01:12,111 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;@31225b97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:01:12,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 21:01:12,136 INFO L130 PetriNetUnfolder]: 8/92 cut-off events. [2022-09-20 21:01:12,136 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:01:12,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:12,137 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] [2022-09-20 21:01:12,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:12,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1108942228, now seen corresponding path program 1 times [2022-09-20 21:01:12,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737097670] [2022-09-20 21:01:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:12,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737097670] [2022-09-20 21:01:12,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737097670] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:12,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:12,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:01:12,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550589612] [2022-09-20 21:01:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:12,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:01:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:01:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:01:12,551 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-09-20 21:01:12,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:12,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:12,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-09-20 21:01:12,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:12,833 INFO L130 PetriNetUnfolder]: 84/283 cut-off events. [2022-09-20 21:01:12,834 INFO L131 PetriNetUnfolder]: For 49/56 co-relation queries the response was YES. [2022-09-20 21:01:12,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 283 events. 84/283 cut-off events. For 49/56 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1064 event pairs, 28 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 322. Up to 122 conditions per place. [2022-09-20 21:01:12,838 INFO L137 encePairwiseOnDemand]: 86/104 looper letters, 31 selfloop transitions, 9 changer transitions 7/104 dead transitions. [2022-09-20 21:01:12,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 323 flow [2022-09-20 21:01:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 725 transitions. [2022-09-20 21:01:12,851 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2022-09-20 21:01:12,851 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 725 transitions. [2022-09-20 21:01:12,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 725 transitions. [2022-09-20 21:01:12,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:12,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 725 transitions. [2022-09-20 21:01:12,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:12,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:12,865 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:12,866 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 10 states and 725 transitions. [2022-09-20 21:01:12,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 323 flow [2022-09-20 21:01:12,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 309 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:01:12,871 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 223 flow [2022-09-20 21:01:12,872 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2022-09-20 21:01:12,874 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2022-09-20 21:01:12,875 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 223 flow [2022-09-20 21:01:12,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:12,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:12,875 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] [2022-09-20 21:01:12,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:01:12,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:12,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1703228035, now seen corresponding path program 1 times [2022-09-20 21:01:12,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:12,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664268367] [2022-09-20 21:01:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:13,061 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 21:01:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664268367] [2022-09-20 21:01:13,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664268367] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520850392] [2022-09-20 21:01:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:13,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:13,065 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 21:01:13,102 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 21:01:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:13,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 21:01:13,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:13,455 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 21:01:13,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:15,710 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (not (< (mod c_~i1~0 4294967296) (mod .cse0 4294967296))) (<= (+ c_~i2~0 (* 4294967296 (div .cse0 4294967296)) 1) (+ .cse0 (* (div c_~i2~0 4294967296) 4294967296)))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) is different from false [2022-09-20 21:01:17,745 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (not (< (mod c_~i1~0 4294967296) (mod .cse0 4294967296))) (<= (+ c_~i2~0 (* 4294967296 (div .cse0 4294967296)) 1) (+ .cse0 (* (div c_~i2~0 4294967296) 4294967296)))))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-09-20 21:01:17,790 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 21:01:17,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520850392] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:17,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:17,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-09-20 21:01:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119164784] [2022-09-20 21:01:17,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:17,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 21:01:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 21:01:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=79, Unknown=2, NotChecked=38, Total=156 [2022-09-20 21:01:17,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-09-20 21:01:17,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 223 flow. Second operand has 13 states, 13 states have (on average 72.3076923076923) internal successors, (940), 13 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:17,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:17,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-09-20 21:01:17,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:18,157 INFO L130 PetriNetUnfolder]: 116/418 cut-off events. [2022-09-20 21:01:18,158 INFO L131 PetriNetUnfolder]: For 54/61 co-relation queries the response was YES. [2022-09-20 21:01:18,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 418 events. 116/418 cut-off events. For 54/61 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2022 event pairs, 7 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 721. Up to 65 conditions per place. [2022-09-20 21:01:18,163 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 14 changer transitions 1/133 dead transitions. [2022-09-20 21:01:18,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 478 flow [2022-09-20 21:01:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 763 transitions. [2022-09-20 21:01:18,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7336538461538461 [2022-09-20 21:01:18,165 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 763 transitions. [2022-09-20 21:01:18,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 763 transitions. [2022-09-20 21:01:18,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:18,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 763 transitions. [2022-09-20 21:01:18,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.3) internal successors, (763), 10 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,169 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,169 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 223 flow. Second operand 10 states and 763 transitions. [2022-09-20 21:01:18,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 478 flow [2022-09-20 21:01:18,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 457 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-09-20 21:01:18,175 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 286 flow [2022-09-20 21:01:18,175 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2022-09-20 21:01:18,175 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 10 predicate places. [2022-09-20 21:01:18,176 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 286 flow [2022-09-20 21:01:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.3076923076923) internal successors, (940), 13 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:18,177 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] [2022-09-20 21:01:18,202 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 21:01:18,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:18,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash -995906079, now seen corresponding path program 2 times [2022-09-20 21:01:18,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:18,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149750930] [2022-09-20 21:01:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:18,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149750930] [2022-09-20 21:01:18,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149750930] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:18,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:18,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:01:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336729300] [2022-09-20 21:01:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:18,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:01:18,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:01:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:01:18,508 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-09-20 21:01:18,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:18,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-09-20 21:01:18,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:18,665 INFO L130 PetriNetUnfolder]: 116/397 cut-off events. [2022-09-20 21:01:18,665 INFO L131 PetriNetUnfolder]: For 216/222 co-relation queries the response was YES. [2022-09-20 21:01:18,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 397 events. 116/397 cut-off events. For 216/222 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1888 event pairs, 14 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 565. Up to 97 conditions per place. [2022-09-20 21:01:18,669 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 43 selfloop transitions, 16 changer transitions 4/124 dead transitions. [2022-09-20 21:01:18,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 525 flow [2022-09-20 21:01:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:01:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:01:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-09-20 21:01:18,671 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2022-09-20 21:01:18,672 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-09-20 21:01:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-09-20 21:01:18,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:18,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-09-20 21:01:18,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,675 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 286 flow. Second operand 7 states and 536 transitions. [2022-09-20 21:01:18,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 525 flow [2022-09-20 21:01:18,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 124 transitions, 519 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 21:01:18,680 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 381 flow [2022-09-20 21:01:18,680 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2022-09-20 21:01:18,682 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2022-09-20 21:01:18,682 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 381 flow [2022-09-20 21:01:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:18,683 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] [2022-09-20 21:01:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:01:18,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1608187118, now seen corresponding path program 1 times [2022-09-20 21:01:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:18,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196071843] [2022-09-20 21:01:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:18,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:18,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196071843] [2022-09-20 21:01:18,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196071843] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:18,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:18,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:01:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489190420] [2022-09-20 21:01:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:01:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:01:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:01:18,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-09-20 21:01:18,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:18,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-09-20 21:01:18,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:18,900 INFO L130 PetriNetUnfolder]: 111/389 cut-off events. [2022-09-20 21:01:18,900 INFO L131 PetriNetUnfolder]: For 448/460 co-relation queries the response was YES. [2022-09-20 21:01:18,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 389 events. 111/389 cut-off events. For 448/460 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1837 event pairs, 14 based on Foata normal form. 3/361 useless extension candidates. Maximal degree in co-relation 620. Up to 126 conditions per place. [2022-09-20 21:01:18,903 INFO L137 encePairwiseOnDemand]: 91/104 looper letters, 48 selfloop transitions, 12 changer transitions 5/126 dead transitions. [2022-09-20 21:01:18,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 126 transitions, 589 flow [2022-09-20 21:01:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:01:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:01:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 537 transitions. [2022-09-20 21:01:18,905 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7376373626373627 [2022-09-20 21:01:18,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 537 transitions. [2022-09-20 21:01:18,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 537 transitions. [2022-09-20 21:01:18,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:18,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 537 transitions. [2022-09-20 21:01:18,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,911 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 381 flow. Second operand 7 states and 537 transitions. [2022-09-20 21:01:18,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 126 transitions, 589 flow [2022-09-20 21:01:18,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 581 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 21:01:18,916 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 400 flow [2022-09-20 21:01:18,916 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-09-20 21:01:18,917 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 22 predicate places. [2022-09-20 21:01:18,917 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 400 flow [2022-09-20 21:01:18,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:18,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:18,917 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] [2022-09-20 21:01:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:01:18,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 261353946, now seen corresponding path program 2 times [2022-09-20 21:01:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:18,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140199749] [2022-09-20 21:01:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:18,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:19,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140199749] [2022-09-20 21:01:19,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140199749] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:19,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:19,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:01:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582900374] [2022-09-20 21:01:19,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:01:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:01:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:01:19,001 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-09-20 21:01:19,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:19,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:19,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-09-20 21:01:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:19,123 INFO L130 PetriNetUnfolder]: 106/371 cut-off events. [2022-09-20 21:01:19,124 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2022-09-20 21:01:19,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 371 events. 106/371 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1568 event pairs, 17 based on Foata normal form. 4/347 useless extension candidates. Maximal degree in co-relation 762. Up to 75 conditions per place. [2022-09-20 21:01:19,126 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 47 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2022-09-20 21:01:19,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 634 flow [2022-09-20 21:01:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:01:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:01:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2022-09-20 21:01:19,128 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7293956043956044 [2022-09-20 21:01:19,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2022-09-20 21:01:19,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2022-09-20 21:01:19,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:19,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2022-09-20 21:01:19,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:19,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:19,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:19,132 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 400 flow. Second operand 7 states and 531 transitions. [2022-09-20 21:01:19,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 634 flow [2022-09-20 21:01:19,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 606 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-09-20 21:01:19,137 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 478 flow [2022-09-20 21:01:19,138 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2022-09-20 21:01:19,139 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 27 predicate places. [2022-09-20 21:01:19,139 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 478 flow [2022-09-20 21:01:19,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:19,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:19,140 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] [2022-09-20 21:01:19,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:01:19,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -147861111, now seen corresponding path program 1 times [2022-09-20 21:01:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812183099] [2022-09-20 21:01:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:19,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812183099] [2022-09-20 21:01:19,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812183099] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:19,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045971380] [2022-09-20 21:01:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:19,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:19,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:19,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:19,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:01:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:19,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-20 21:01:19,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:19,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:19,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045971380] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:19,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:19,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-09-20 21:01:19,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722647099] [2022-09-20 21:01:19,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:19,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 21:01:19,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 21:01:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-09-20 21:01:19,884 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 104 [2022-09-20 21:01:19,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 478 flow. Second operand has 18 states, 18 states have (on average 74.55555555555556) internal successors, (1342), 18 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:19,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:19,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 104 [2022-09-20 21:01:19,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:20,238 INFO L130 PetriNetUnfolder]: 126/444 cut-off events. [2022-09-20 21:01:20,238 INFO L131 PetriNetUnfolder]: For 1463/1562 co-relation queries the response was YES. [2022-09-20 21:01:20,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 444 events. 126/444 cut-off events. For 1463/1562 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1974 event pairs, 17 based on Foata normal form. 14/415 useless extension candidates. Maximal degree in co-relation 920. Up to 81 conditions per place. [2022-09-20 21:01:20,242 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 55 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2022-09-20 21:01:20,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 145 transitions, 891 flow [2022-09-20 21:01:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:01:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:01:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 847 transitions. [2022-09-20 21:01:20,244 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7403846153846154 [2022-09-20 21:01:20,244 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 847 transitions. [2022-09-20 21:01:20,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 847 transitions. [2022-09-20 21:01:20,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:20,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 847 transitions. [2022-09-20 21:01:20,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,249 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,249 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 478 flow. Second operand 11 states and 847 transitions. [2022-09-20 21:01:20,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 145 transitions, 891 flow [2022-09-20 21:01:20,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 145 transitions, 860 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-09-20 21:01:20,255 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 610 flow [2022-09-20 21:01:20,255 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=610, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2022-09-20 21:01:20,257 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 38 predicate places. [2022-09-20 21:01:20,257 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 610 flow [2022-09-20 21:01:20,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.55555555555556) internal successors, (1342), 18 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:20,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:20,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-20 21:01:20,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1482894256, now seen corresponding path program 1 times [2022-09-20 21:01:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038568277] [2022-09-20 21:01:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:20,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038568277] [2022-09-20 21:01:20,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038568277] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:20,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:20,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:01:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913087687] [2022-09-20 21:01:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:20,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:01:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:20,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:01:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:01:20,539 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-09-20 21:01:20,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:20,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-09-20 21:01:20,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:20,647 INFO L130 PetriNetUnfolder]: 155/795 cut-off events. [2022-09-20 21:01:20,647 INFO L131 PetriNetUnfolder]: For 1751/1780 co-relation queries the response was YES. [2022-09-20 21:01:20,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 795 events. 155/795 cut-off events. For 1751/1780 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5280 event pairs, 39 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 1246. Up to 127 conditions per place. [2022-09-20 21:01:20,654 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2022-09-20 21:01:20,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 688 flow [2022-09-20 21:01:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 21:01:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 21:01:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-09-20 21:01:20,655 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-09-20 21:01:20,655 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-09-20 21:01:20,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-09-20 21:01:20,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:20,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-09-20 21:01:20,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,657 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 610 flow. Second operand 4 states and 376 transitions. [2022-09-20 21:01:20,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 688 flow [2022-09-20 21:01:20,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 677 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-20 21:01:20,663 INFO L231 Difference]: Finished difference. Result has 132 places, 122 transitions, 633 flow [2022-09-20 21:01:20,663 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2022-09-20 21:01:20,663 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 40 predicate places. [2022-09-20 21:01:20,663 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 633 flow [2022-09-20 21:01:20,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:20,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:20,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 21:01:20,664 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1000019462, now seen corresponding path program 2 times [2022-09-20 21:01:20,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:20,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907864547] [2022-09-20 21:01:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907864547] [2022-09-20 21:01:20,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907864547] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:20,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:20,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:01:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549683404] [2022-09-20 21:01:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:01:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:01:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:01:20,702 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-09-20 21:01:20,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 633 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:20,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-09-20 21:01:20,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:20,772 INFO L130 PetriNetUnfolder]: 120/650 cut-off events. [2022-09-20 21:01:20,772 INFO L131 PetriNetUnfolder]: For 1405/1429 co-relation queries the response was YES. [2022-09-20 21:01:20,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 650 events. 120/650 cut-off events. For 1405/1429 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3929 event pairs, 25 based on Foata normal form. 14/619 useless extension candidates. Maximal degree in co-relation 1095. Up to 105 conditions per place. [2022-09-20 21:01:20,779 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 15 selfloop transitions, 7 changer transitions 0/128 dead transitions. [2022-09-20 21:01:20,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 699 flow [2022-09-20 21:01:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 21:01:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 21:01:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2022-09-20 21:01:20,780 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8918269230769231 [2022-09-20 21:01:20,780 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2022-09-20 21:01:20,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2022-09-20 21:01:20,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:20,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2022-09-20 21:01:20,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,782 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,782 INFO L175 Difference]: Start difference. First operand has 132 places, 122 transitions, 633 flow. Second operand 4 states and 371 transitions. [2022-09-20 21:01:20,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 699 flow [2022-09-20 21:01:20,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:01:20,788 INFO L231 Difference]: Finished difference. Result has 137 places, 124 transitions, 673 flow [2022-09-20 21:01:20,788 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2022-09-20 21:01:20,790 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 45 predicate places. [2022-09-20 21:01:20,790 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 673 flow [2022-09-20 21:01:20,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:20,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:20,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:20,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 21:01:20,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash -181821378, now seen corresponding path program 1 times [2022-09-20 21:01:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331663528] [2022-09-20 21:01:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-20 21:01:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:20,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331663528] [2022-09-20 21:01:20,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331663528] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:20,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93420588] [2022-09-20 21:01:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:20,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:20,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:20,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:20,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:01:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:21,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-20 21:01:21,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-20 21:01:21,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-20 21:01:21,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93420588] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:21,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:21,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-09-20 21:01:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028447458] [2022-09-20 21:01:21,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:21,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 21:01:21,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 21:01:21,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-09-20 21:01:21,537 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2022-09-20 21:01:21,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 673 flow. Second operand has 18 states, 18 states have (on average 71.22222222222223) internal successors, (1282), 18 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:21,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:21,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2022-09-20 21:01:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:22,250 INFO L130 PetriNetUnfolder]: 473/1460 cut-off events. [2022-09-20 21:01:22,250 INFO L131 PetriNetUnfolder]: For 4702/4722 co-relation queries the response was YES. [2022-09-20 21:01:22,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 1460 events. 473/1460 cut-off events. For 4702/4722 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9966 event pairs, 18 based on Foata normal form. 50/1423 useless extension candidates. Maximal degree in co-relation 3443. Up to 251 conditions per place. [2022-09-20 21:01:22,260 INFO L137 encePairwiseOnDemand]: 91/104 looper letters, 119 selfloop transitions, 32 changer transitions 0/217 dead transitions. [2022-09-20 21:01:22,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 217 transitions, 1639 flow [2022-09-20 21:01:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 21:01:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 21:01:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1264 transitions. [2022-09-20 21:01:22,263 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7149321266968326 [2022-09-20 21:01:22,263 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1264 transitions. [2022-09-20 21:01:22,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1264 transitions. [2022-09-20 21:01:22,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:22,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1264 transitions. [2022-09-20 21:01:22,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.3529411764706) internal successors, (1264), 17 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,268 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,268 INFO L175 Difference]: Start difference. First operand has 137 places, 124 transitions, 673 flow. Second operand 17 states and 1264 transitions. [2022-09-20 21:01:22,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 217 transitions, 1639 flow [2022-09-20 21:01:22,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 217 transitions, 1631 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-20 21:01:22,276 INFO L231 Difference]: Finished difference. Result has 160 places, 142 transitions, 959 flow [2022-09-20 21:01:22,277 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=959, PETRI_PLACES=160, PETRI_TRANSITIONS=142} [2022-09-20 21:01:22,277 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 68 predicate places. [2022-09-20 21:01:22,277 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 142 transitions, 959 flow [2022-09-20 21:01:22,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.22222222222223) internal successors, (1282), 18 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:22,278 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:22,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:22,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:22,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash -332113188, now seen corresponding path program 2 times [2022-09-20 21:01:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:22,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562450688] [2022-09-20 21:01:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:22,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-20 21:01:22,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:22,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562450688] [2022-09-20 21:01:22,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562450688] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:22,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:22,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:01:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402094708] [2022-09-20 21:01:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:22,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:01:22,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:01:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:01:22,531 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-09-20 21:01:22,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 142 transitions, 959 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:22,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-09-20 21:01:22,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:22,797 INFO L130 PetriNetUnfolder]: 441/2200 cut-off events. [2022-09-20 21:01:22,798 INFO L131 PetriNetUnfolder]: For 7406/7442 co-relation queries the response was YES. [2022-09-20 21:01:22,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 2200 events. 441/2200 cut-off events. For 7406/7442 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 20190 event pairs, 98 based on Foata normal form. 36/2138 useless extension candidates. Maximal degree in co-relation 5649. Up to 353 conditions per place. [2022-09-20 21:01:22,813 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 22 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2022-09-20 21:01:22,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 156 transitions, 1057 flow [2022-09-20 21:01:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 21:01:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 21:01:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-09-20 21:01:22,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-09-20 21:01:22,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-09-20 21:01:22,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-09-20 21:01:22,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:22,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-09-20 21:01:22,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,816 INFO L175 Difference]: Start difference. First operand has 160 places, 142 transitions, 959 flow. Second operand 4 states and 377 transitions. [2022-09-20 21:01:22,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 156 transitions, 1057 flow [2022-09-20 21:01:22,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 156 transitions, 1007 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-09-20 21:01:22,833 INFO L231 Difference]: Finished difference. Result has 159 places, 145 transitions, 943 flow [2022-09-20 21:01:22,834 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=943, PETRI_PLACES=159, PETRI_TRANSITIONS=145} [2022-09-20 21:01:22,834 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 67 predicate places. [2022-09-20 21:01:22,834 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 145 transitions, 943 flow [2022-09-20 21:01:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:22,834 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:22,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 21:01:22,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1338483968, now seen corresponding path program 1 times [2022-09-20 21:01:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:22,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482780372] [2022-09-20 21:01:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:22,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482780372] [2022-09-20 21:01:22,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482780372] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:22,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:22,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:01:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307194323] [2022-09-20 21:01:22,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:22,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:01:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:01:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:01:22,868 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-09-20 21:01:22,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 943 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:22,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:22,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-09-20 21:01:22,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:23,049 INFO L130 PetriNetUnfolder]: 309/1661 cut-off events. [2022-09-20 21:01:23,049 INFO L131 PetriNetUnfolder]: For 5531/5561 co-relation queries the response was YES. [2022-09-20 21:01:23,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 1661 events. 309/1661 cut-off events. For 5531/5561 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14201 event pairs, 54 based on Foata normal form. 54/1695 useless extension candidates. Maximal degree in co-relation 4646. Up to 261 conditions per place. [2022-09-20 21:01:23,065 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 22 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2022-09-20 21:01:23,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 157 transitions, 1048 flow [2022-09-20 21:01:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 21:01:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 21:01:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-09-20 21:01:23,067 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2022-09-20 21:01:23,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-09-20 21:01:23,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-09-20 21:01:23,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:23,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-09-20 21:01:23,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,069 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,069 INFO L175 Difference]: Start difference. First operand has 159 places, 145 transitions, 943 flow. Second operand 4 states and 375 transitions. [2022-09-20 21:01:23,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 157 transitions, 1048 flow [2022-09-20 21:01:23,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 157 transitions, 1048 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:01:23,084 INFO L231 Difference]: Finished difference. Result has 164 places, 147 transitions, 977 flow [2022-09-20 21:01:23,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=977, PETRI_PLACES=164, PETRI_TRANSITIONS=147} [2022-09-20 21:01:23,084 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 72 predicate places. [2022-09-20 21:01:23,085 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 147 transitions, 977 flow [2022-09-20 21:01:23,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:23,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:23,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 21:01:23,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1554210138, now seen corresponding path program 1 times [2022-09-20 21:01:23,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:23,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64325735] [2022-09-20 21:01:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:23,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:23,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64325735] [2022-09-20 21:01:23,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64325735] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:23,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039446234] [2022-09-20 21:01:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:23,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:23,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:23,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:23,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:01:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:23,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:23,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:23,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:23,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039446234] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:23,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:23,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-09-20 21:01:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555110418] [2022-09-20 21:01:23,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 21:01:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 21:01:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:01:23,474 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:23,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 147 transitions, 977 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:23,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:23,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:23,860 INFO L130 PetriNetUnfolder]: 295/2039 cut-off events. [2022-09-20 21:01:23,861 INFO L131 PetriNetUnfolder]: For 7845/7996 co-relation queries the response was YES. [2022-09-20 21:01:23,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6827 conditions, 2039 events. 295/2039 cut-off events. For 7845/7996 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18593 event pairs, 68 based on Foata normal form. 59/2063 useless extension candidates. Maximal degree in co-relation 5786. Up to 323 conditions per place. [2022-09-20 21:01:23,877 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 29 selfloop transitions, 19 changer transitions 4/177 dead transitions. [2022-09-20 21:01:23,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 177 transitions, 1170 flow [2022-09-20 21:01:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-09-20 21:01:23,879 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-09-20 21:01:23,879 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-09-20 21:01:23,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-09-20 21:01:23,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:23,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-09-20 21:01:23,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,882 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,883 INFO L175 Difference]: Start difference. First operand has 164 places, 147 transitions, 977 flow. Second operand 10 states and 843 transitions. [2022-09-20 21:01:23,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 177 transitions, 1170 flow [2022-09-20 21:01:23,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 177 transitions, 1170 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:01:23,899 INFO L231 Difference]: Finished difference. Result has 176 places, 157 transitions, 1077 flow [2022-09-20 21:01:23,900 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1077, PETRI_PLACES=176, PETRI_TRANSITIONS=157} [2022-09-20 21:01:23,900 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 84 predicate places. [2022-09-20 21:01:23,900 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 157 transitions, 1077 flow [2022-09-20 21:01:23,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:23,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:23,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:23,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:24,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:24,115 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1793832864, now seen corresponding path program 2 times [2022-09-20 21:01:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:24,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942614506] [2022-09-20 21:01:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:24,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:24,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942614506] [2022-09-20 21:01:24,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942614506] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413994895] [2022-09-20 21:01:24,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:01:24,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:24,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:24,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:01:24,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:01:24,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:24,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:24,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:24,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413994895] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:24,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:24,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-09-20 21:01:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419359191] [2022-09-20 21:01:24,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 21:01:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 21:01:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:01:24,528 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:24,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 157 transitions, 1077 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:24,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:24,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:24,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:25,036 INFO L130 PetriNetUnfolder]: 432/3009 cut-off events. [2022-09-20 21:01:25,036 INFO L131 PetriNetUnfolder]: For 13115/13418 co-relation queries the response was YES. [2022-09-20 21:01:25,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10670 conditions, 3009 events. 432/3009 cut-off events. For 13115/13418 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30066 event pairs, 58 based on Foata normal form. 97/3062 useless extension candidates. Maximal degree in co-relation 10527. Up to 418 conditions per place. [2022-09-20 21:01:25,066 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 37 selfloop transitions, 26 changer transitions 4/192 dead transitions. [2022-09-20 21:01:25,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 192 transitions, 1369 flow [2022-09-20 21:01:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 845 transitions. [2022-09-20 21:01:25,069 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-09-20 21:01:25,069 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 845 transitions. [2022-09-20 21:01:25,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 845 transitions. [2022-09-20 21:01:25,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:25,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 845 transitions. [2022-09-20 21:01:25,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:25,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:25,072 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:25,072 INFO L175 Difference]: Start difference. First operand has 176 places, 157 transitions, 1077 flow. Second operand 10 states and 845 transitions. [2022-09-20 21:01:25,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 192 transitions, 1369 flow [2022-09-20 21:01:25,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 192 transitions, 1283 flow, removed 36 selfloop flow, removed 6 redundant places. [2022-09-20 21:01:25,102 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 1190 flow [2022-09-20 21:01:25,102 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1190, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2022-09-20 21:01:25,102 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 89 predicate places. [2022-09-20 21:01:25,102 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 1190 flow [2022-09-20 21:01:25,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:25,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:25,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:25,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-20 21:01:25,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-20 21:01:25,321 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1299969308, now seen corresponding path program 3 times [2022-09-20 21:01:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:25,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903634643] [2022-09-20 21:01:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:25,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903634643] [2022-09-20 21:01:25,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903634643] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229703278] [2022-09-20 21:01:25,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 21:01:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:25,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:25,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:25,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 21:01:25,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-09-20 21:01:25,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:25,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:25,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:25,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229703278] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:25,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:25,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-09-20 21:01:25,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592535468] [2022-09-20 21:01:25,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 21:01:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:25,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 21:01:25,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:01:25,745 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:25,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 172 transitions, 1190 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:25,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:25,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:26,321 INFO L130 PetriNetUnfolder]: 503/3516 cut-off events. [2022-09-20 21:01:26,321 INFO L131 PetriNetUnfolder]: For 15418/15745 co-relation queries the response was YES. [2022-09-20 21:01:26,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12468 conditions, 3516 events. 503/3516 cut-off events. For 15418/15745 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 36746 event pairs, 96 based on Foata normal form. 102/3556 useless extension candidates. Maximal degree in co-relation 12303. Up to 629 conditions per place. [2022-09-20 21:01:26,352 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 48 selfloop transitions, 21 changer transitions 4/198 dead transitions. [2022-09-20 21:01:26,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 198 transitions, 1443 flow [2022-09-20 21:01:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2022-09-20 21:01:26,354 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8086538461538462 [2022-09-20 21:01:26,354 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2022-09-20 21:01:26,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2022-09-20 21:01:26,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:26,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2022-09-20 21:01:26,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:26,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:26,357 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:26,357 INFO L175 Difference]: Start difference. First operand has 181 places, 172 transitions, 1190 flow. Second operand 10 states and 841 transitions. [2022-09-20 21:01:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 198 transitions, 1443 flow [2022-09-20 21:01:26,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 198 transitions, 1412 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:26,391 INFO L231 Difference]: Finished difference. Result has 187 places, 178 transitions, 1274 flow [2022-09-20 21:01:26,391 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1274, PETRI_PLACES=187, PETRI_TRANSITIONS=178} [2022-09-20 21:01:26,391 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 95 predicate places. [2022-09-20 21:01:26,391 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 178 transitions, 1274 flow [2022-09-20 21:01:26,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:26,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:26,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:26,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:26,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:26,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1757173436, now seen corresponding path program 4 times [2022-09-20 21:01:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:26,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235756420] [2022-09-20 21:01:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235756420] [2022-09-20 21:01:26,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235756420] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044524077] [2022-09-20 21:01:26,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 21:01:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:26,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:26,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 21:01:26,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 21:01:26,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:26,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-09-20 21:01:26,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:26,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:26,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044524077] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:26,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:26,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-09-20 21:01:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853138310] [2022-09-20 21:01:26,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:26,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 21:01:26,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 21:01:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:01:26,958 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:26,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 178 transitions, 1274 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:26,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:26,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:26,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:27,433 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([247] L42-1-->L42-2: Formula: (not (< (mod v_~i1~0_1 4294967296) (mod (* 2 v_~N~0_1) 4294967296))) InVars {~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} OutVars{~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][167], [Black: 637#(<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 641#(and (<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 843#(and (<= (+ (* (div (+ 4294967294 ~i1~0) 4294967296) 4294967296) 1) ~i1~0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1161#(and (<= ~i1~0 (* 4294967296 (div ~i1~0 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1165#(and (<= (+ (* (div (+ 4294967294 ~i1~0) 4294967296) 4294967296) 1) ~i1~0) (<= (* 4294967296 (div (+ |thread1Thread1of1ForFork0_#t~post3| 4294967295) 4294967296)) |thread1Thread1of1ForFork0_#t~post3|) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 1768#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), Black: 1171#true, 1775#(= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0), Black: 1174#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 632#true, Black: 2383#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2384#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), Black: 1179#true, 6#L94-4true, 100#L42-2true, 646#true, 3579#true, 74#L73-2true, 609#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), 1173#(= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0), Black: 1784#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 619#true, 1780#true, Black: 593#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 131#(<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 595#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 279#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (= (mod ~i2~0 4294967296) 0)), 126#true, Black: 1186#true, Black: 1191#(and (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1753#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1747#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1743#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1751#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 1612#(or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))), Black: 1428#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 608#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)), Black: 611#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296))))), Black: 1765#true, 2379#true, Black: 1767#(not (= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0)), Black: 1773#true, Black: 1776#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 628#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2985#(<= (+ ~pos~0 3) (* (div (+ ~pos~0 3) 4294967296) 4294967296)), Black: 624#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 3571#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 2983#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3573#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 2979#true]) [2022-09-20 21:01:27,434 INFO L383 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-09-20 21:01:27,434 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-09-20 21:01:27,434 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-09-20 21:01:27,434 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-09-20 21:01:27,450 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([260] L61-1-->L61-2: Formula: (not (< (mod v_~i2~0_1 4294967296) (mod (* 2 v_~N~0_3) 4294967296))) InVars {~i2~0=v_~i2~0_1, ~N~0=v_~N~0_3} OutVars{~i2~0=v_~i2~0_1, ~N~0=v_~N~0_3} AuxVars[] AssignedVars[][142], [Black: 637#(<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 641#(and (<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 843#(and (<= (+ (* (div (+ 4294967294 ~i1~0) 4294967296) 4294967296) 1) ~i1~0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 1186#true, Black: 1161#(and (<= ~i1~0 (* 4294967296 (div ~i1~0 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1165#(and (<= (+ (* (div (+ 4294967294 ~i1~0) 4294967296) 4294967296) 1) ~i1~0) (<= (* 4294967296 (div (+ |thread1Thread1of1ForFork0_#t~post3| 4294967295) 4294967296)) |thread1Thread1of1ForFork0_#t~post3|) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 1768#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), Black: 1171#true, 1775#(= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0), 604#true, Black: 1174#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 632#true, Black: 2383#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2384#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), Black: 1179#true, 6#L94-4true, 52#L61-2true, 646#true, 3579#true, 28#L54-2true, 1173#(= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0), Black: 1784#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 1780#true, 624#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 593#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 131#(<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 595#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 279#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (= (mod ~i2~0 4294967296) 0)), 126#true, Black: 1191#(and (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1753#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1612#(or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))), Black: 1747#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1743#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1751#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1428#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 608#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)), Black: 609#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 611#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296))))), Black: 1765#true, 2379#true, Black: 1767#(not (= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0)), Black: 1773#true, Black: 1776#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 628#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2985#(<= (+ ~pos~0 3) (* (div (+ ~pos~0 3) 4294967296) 4294967296)), Black: 3571#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 2983#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3573#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 2979#true]) [2022-09-20 21:01:27,450 INFO L383 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-09-20 21:01:27,450 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-09-20 21:01:27,450 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-09-20 21:01:27,450 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-09-20 21:01:27,464 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([247] L42-1-->L42-2: Formula: (not (< (mod v_~i1~0_1 4294967296) (mod (* 2 v_~N~0_1) 4294967296))) InVars {~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} OutVars{~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][170], [Black: 637#(<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 641#(and (<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 843#(and (<= (+ (* (div (+ 4294967294 ~i1~0) 4294967296) 4294967296) 1) ~i1~0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1161#(and (<= ~i1~0 (* 4294967296 (div ~i1~0 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1165#(and (<= (+ (* (div (+ 4294967294 ~i1~0) 4294967296) 4294967296) 1) ~i1~0) (<= (* 4294967296 (div (+ |thread1Thread1of1ForFork0_#t~post3| 4294967295) 4294967296)) |thread1Thread1of1ForFork0_#t~post3|) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 1768#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), Black: 1171#true, 1775#(= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0), Black: 1174#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 597#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)))), 632#true, Black: 2383#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2384#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), Black: 1179#true, 1755#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296)))), 6#L94-4true, 100#L42-2true, 646#true, 3579#true, 25#L62true, 609#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), 1173#(= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0), Black: 1784#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 619#true, 1780#true, Black: 593#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 131#(<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 595#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 279#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (= (mod ~i2~0 4294967296) 0)), Black: 1186#true, Black: 1191#(and (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1753#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1612#(or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))), Black: 1747#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1743#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1751#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (or (not (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296))) (< (mod (+ ~i2~0 1) 4294967296) (mod (* 2 ~N~0) 4294967296))) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1428#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 608#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)), Black: 611#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296))))), Black: 1765#true, 2379#true, Black: 1767#(not (= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0)), Black: 1773#true, Black: 1776#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 628#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2985#(<= (+ ~pos~0 3) (* (div (+ ~pos~0 3) 4294967296) 4294967296)), Black: 624#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 3571#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 2983#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3573#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 2979#true]) [2022-09-20 21:01:27,464 INFO L383 tUnfolder$Statistics]: this new event has 92 ancestors and is cut-off event [2022-09-20 21:01:27,464 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 21:01:27,464 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 21:01:27,464 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-09-20 21:01:27,683 INFO L130 PetriNetUnfolder]: 601/4355 cut-off events. [2022-09-20 21:01:27,683 INFO L131 PetriNetUnfolder]: For 19958/20340 co-relation queries the response was YES. [2022-09-20 21:01:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15615 conditions, 4355 events. 601/4355 cut-off events. For 19958/20340 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 48465 event pairs, 105 based on Foata normal form. 117/4406 useless extension candidates. Maximal degree in co-relation 15407. Up to 721 conditions per place. [2022-09-20 21:01:27,715 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 54 selfloop transitions, 25 changer transitions 4/208 dead transitions. [2022-09-20 21:01:27,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 208 transitions, 1597 flow [2022-09-20 21:01:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-09-20 21:01:27,716 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-09-20 21:01:27,716 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-09-20 21:01:27,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-09-20 21:01:27,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:27,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-09-20 21:01:27,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:27,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:27,719 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:27,719 INFO L175 Difference]: Start difference. First operand has 187 places, 178 transitions, 1274 flow. Second operand 10 states and 844 transitions. [2022-09-20 21:01:27,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 208 transitions, 1597 flow [2022-09-20 21:01:27,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 208 transitions, 1566 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:27,761 INFO L231 Difference]: Finished difference. Result has 192 places, 188 transitions, 1408 flow [2022-09-20 21:01:27,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1408, PETRI_PLACES=192, PETRI_TRANSITIONS=188} [2022-09-20 21:01:27,761 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 100 predicate places. [2022-09-20 21:01:27,761 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 188 transitions, 1408 flow [2022-09-20 21:01:27,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:27,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:27,762 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:27,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-20 21:01:27,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:27,981 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1027141296, now seen corresponding path program 5 times [2022-09-20 21:01:27,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:27,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538833691] [2022-09-20 21:01:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:28,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538833691] [2022-09-20 21:01:28,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538833691] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:28,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219697230] [2022-09-20 21:01:28,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 21:01:28,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:28,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:28,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:28,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-20 21:01:28,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-09-20 21:01:28,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:28,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:28,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:28,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:28,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219697230] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:28,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:28,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-09-20 21:01:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328681359] [2022-09-20 21:01:28,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:01:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:01:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-09-20 21:01:28,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:28,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 188 transitions, 1408 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:28,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:28,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:28,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:29,341 INFO L130 PetriNetUnfolder]: 659/4889 cut-off events. [2022-09-20 21:01:29,341 INFO L131 PetriNetUnfolder]: For 23965/24494 co-relation queries the response was YES. [2022-09-20 21:01:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17753 conditions, 4889 events. 659/4889 cut-off events. For 23965/24494 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 56301 event pairs, 102 based on Foata normal form. 162/4981 useless extension candidates. Maximal degree in co-relation 17513. Up to 591 conditions per place. [2022-09-20 21:01:29,379 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 54 selfloop transitions, 39 changer transitions 4/222 dead transitions. [2022-09-20 21:01:29,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 222 transitions, 1791 flow [2022-09-20 21:01:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:01:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:01:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-09-20 21:01:29,381 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-09-20 21:01:29,381 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-09-20 21:01:29,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-09-20 21:01:29,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:29,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-09-20 21:01:29,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:29,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:29,384 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:29,384 INFO L175 Difference]: Start difference. First operand has 192 places, 188 transitions, 1408 flow. Second operand 11 states and 931 transitions. [2022-09-20 21:01:29,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 222 transitions, 1791 flow [2022-09-20 21:01:29,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 222 transitions, 1746 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:29,429 INFO L231 Difference]: Finished difference. Result has 198 places, 196 transitions, 1567 flow [2022-09-20 21:01:29,429 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=198, PETRI_TRANSITIONS=196} [2022-09-20 21:01:29,430 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 106 predicate places. [2022-09-20 21:01:29,430 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 196 transitions, 1567 flow [2022-09-20 21:01:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:29,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:29,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:29,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:29,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-20 21:01:29,644 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash 754096802, now seen corresponding path program 6 times [2022-09-20 21:01:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:29,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514696235] [2022-09-20 21:01:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514696235] [2022-09-20 21:01:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514696235] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030602218] [2022-09-20 21:01:29,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-20 21:01:29,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:29,820 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:29,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-20 21:01:29,926 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-09-20 21:01:29,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:29,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:29,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:30,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:30,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030602218] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:30,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:30,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-09-20 21:01:30,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220534882] [2022-09-20 21:01:30,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:30,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 21:01:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 21:01:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-09-20 21:01:30,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-09-20 21:01:30,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 196 transitions, 1567 flow. Second operand has 15 states, 15 states have (on average 70.13333333333334) internal successors, (1052), 15 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:30,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:30,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-09-20 21:01:30,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:32,204 INFO L130 PetriNetUnfolder]: 3056/10714 cut-off events. [2022-09-20 21:01:32,205 INFO L131 PetriNetUnfolder]: For 69050/69190 co-relation queries the response was YES. [2022-09-20 21:01:32,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46055 conditions, 10714 events. 3056/10714 cut-off events. For 69050/69190 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 122836 event pairs, 1148 based on Foata normal form. 144/10799 useless extension candidates. Maximal degree in co-relation 45763. Up to 3627 conditions per place. [2022-09-20 21:01:32,294 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 268 selfloop transitions, 46 changer transitions 4/388 dead transitions. [2022-09-20 21:01:32,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 388 transitions, 4265 flow [2022-09-20 21:01:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:01:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:01:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 847 transitions. [2022-09-20 21:01:32,296 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7403846153846154 [2022-09-20 21:01:32,296 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 847 transitions. [2022-09-20 21:01:32,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 847 transitions. [2022-09-20 21:01:32,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:32,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 847 transitions. [2022-09-20 21:01:32,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:32,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:32,299 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:32,299 INFO L175 Difference]: Start difference. First operand has 198 places, 196 transitions, 1567 flow. Second operand 11 states and 847 transitions. [2022-09-20 21:01:32,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 388 transitions, 4265 flow [2022-09-20 21:01:32,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 388 transitions, 4139 flow, removed 53 selfloop flow, removed 6 redundant places. [2022-09-20 21:01:32,423 INFO L231 Difference]: Finished difference. Result has 203 places, 208 transitions, 1736 flow [2022-09-20 21:01:32,424 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1736, PETRI_PLACES=203, PETRI_TRANSITIONS=208} [2022-09-20 21:01:32,424 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 111 predicate places. [2022-09-20 21:01:32,424 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 208 transitions, 1736 flow [2022-09-20 21:01:32,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.13333333333334) internal successors, (1052), 15 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:32,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:32,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:32,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:32,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-20 21:01:32,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash -659875536, now seen corresponding path program 7 times [2022-09-20 21:01:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:32,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552276499] [2022-09-20 21:01:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:32,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:32,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552276499] [2022-09-20 21:01:32,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552276499] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826597553] [2022-09-20 21:01:32,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-20 21:01:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:32,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:32,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-20 21:01:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:32,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:32,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:32,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:33,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826597553] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:33,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:33,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-09-20 21:01:33,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236678460] [2022-09-20 21:01:33,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:33,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:01:33,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:01:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-09-20 21:01:33,147 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:33,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 208 transitions, 1736 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:33,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:33,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:34,218 INFO L130 PetriNetUnfolder]: 786/6192 cut-off events. [2022-09-20 21:01:34,218 INFO L131 PetriNetUnfolder]: For 32092/32710 co-relation queries the response was YES. [2022-09-20 21:01:34,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22815 conditions, 6192 events. 786/6192 cut-off events. For 32092/32710 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 76109 event pairs, 131 based on Foata normal form. 218/6322 useless extension candidates. Maximal degree in co-relation 22492. Up to 766 conditions per place. [2022-09-20 21:01:34,273 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 69 selfloop transitions, 44 changer transitions 4/242 dead transitions. [2022-09-20 21:01:34,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 242 transitions, 2171 flow [2022-09-20 21:01:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:01:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:01:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 933 transitions. [2022-09-20 21:01:34,274 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8155594405594405 [2022-09-20 21:01:34,274 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 933 transitions. [2022-09-20 21:01:34,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 933 transitions. [2022-09-20 21:01:34,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:34,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 933 transitions. [2022-09-20 21:01:34,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.81818181818181) internal successors, (933), 11 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:34,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:34,277 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:34,277 INFO L175 Difference]: Start difference. First operand has 203 places, 208 transitions, 1736 flow. Second operand 11 states and 933 transitions. [2022-09-20 21:01:34,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 242 transitions, 2171 flow [2022-09-20 21:01:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 242 transitions, 2085 flow, removed 33 selfloop flow, removed 6 redundant places. [2022-09-20 21:01:34,345 INFO L231 Difference]: Finished difference. Result has 208 places, 216 transitions, 1887 flow [2022-09-20 21:01:34,345 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1887, PETRI_PLACES=208, PETRI_TRANSITIONS=216} [2022-09-20 21:01:34,345 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 116 predicate places. [2022-09-20 21:01:34,346 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 216 transitions, 1887 flow [2022-09-20 21:01:34,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:34,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:34,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:34,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-09-20 21:01:34,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-20 21:01:34,563 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2068677926, now seen corresponding path program 8 times [2022-09-20 21:01:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:34,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408834137] [2022-09-20 21:01:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:34,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:34,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408834137] [2022-09-20 21:01:34,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408834137] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:34,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338140027] [2022-09-20 21:01:34,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:01:34,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:34,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:34,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-20 21:01:34,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:01:34,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:34,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-09-20 21:01:34,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:34,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:34,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338140027] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:34,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:34,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-09-20 21:01:34,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3013672] [2022-09-20 21:01:34,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:34,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 21:01:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 21:01:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:01:34,981 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:34,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 216 transitions, 1887 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:34,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:34,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:36,006 INFO L130 PetriNetUnfolder]: 863/6668 cut-off events. [2022-09-20 21:01:36,006 INFO L131 PetriNetUnfolder]: For 36670/37386 co-relation queries the response was YES. [2022-09-20 21:01:36,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24926 conditions, 6668 events. 863/6668 cut-off events. For 36670/37386 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 83188 event pairs, 190 based on Foata normal form. 189/6753 useless extension candidates. Maximal degree in co-relation 24582. Up to 1327 conditions per place. [2022-09-20 21:01:36,068 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 97 selfloop transitions, 21 changer transitions 4/247 dead transitions. [2022-09-20 21:01:36,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 2349 flow [2022-09-20 21:01:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:01:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:01:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2022-09-20 21:01:36,070 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8086538461538462 [2022-09-20 21:01:36,070 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2022-09-20 21:01:36,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2022-09-20 21:01:36,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:36,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2022-09-20 21:01:36,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:36,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:36,072 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:36,072 INFO L175 Difference]: Start difference. First operand has 208 places, 216 transitions, 1887 flow. Second operand 10 states and 841 transitions. [2022-09-20 21:01:36,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 2349 flow [2022-09-20 21:01:36,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 247 transitions, 2306 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:36,148 INFO L231 Difference]: Finished difference. Result has 215 places, 227 transitions, 2077 flow [2022-09-20 21:01:36,148 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2077, PETRI_PLACES=215, PETRI_TRANSITIONS=227} [2022-09-20 21:01:36,149 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 123 predicate places. [2022-09-20 21:01:36,149 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 227 transitions, 2077 flow [2022-09-20 21:01:36,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:36,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:36,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:36,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:36,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:36,366 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:36,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash 373670188, now seen corresponding path program 9 times [2022-09-20 21:01:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:36,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844344654] [2022-09-20 21:01:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:36,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844344654] [2022-09-20 21:01:36,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844344654] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:36,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343753551] [2022-09-20 21:01:36,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 21:01:36,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:36,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:36,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-20 21:01:36,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-09-20 21:01:36,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 21:01:36,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:36,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:36,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343753551] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:36,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:36,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-09-20 21:01:36,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266429195] [2022-09-20 21:01:36,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:01:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:36,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:01:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-09-20 21:01:36,799 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-09-20 21:01:36,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 227 transitions, 2077 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:36,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:36,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-09-20 21:01:36,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:38,069 INFO L130 PetriNetUnfolder]: 897/7072 cut-off events. [2022-09-20 21:01:38,070 INFO L131 PetriNetUnfolder]: For 39627/40382 co-relation queries the response was YES. [2022-09-20 21:01:38,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26560 conditions, 7072 events. 897/7072 cut-off events. For 39627/40382 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 89791 event pairs, 168 based on Foata normal form. 228/7196 useless extension candidates. Maximal degree in co-relation 26202. Up to 1070 conditions per place. [2022-09-20 21:01:38,148 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 93 selfloop transitions, 45 changer transitions 4/267 dead transitions. [2022-09-20 21:01:38,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 267 transitions, 2618 flow [2022-09-20 21:01:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:01:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:01:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-09-20 21:01:38,149 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-09-20 21:01:38,149 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-09-20 21:01:38,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-09-20 21:01:38,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:38,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-09-20 21:01:38,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:38,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:38,152 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:38,152 INFO L175 Difference]: Start difference. First operand has 215 places, 227 transitions, 2077 flow. Second operand 11 states and 931 transitions. [2022-09-20 21:01:38,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 267 transitions, 2618 flow [2022-09-20 21:01:38,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 267 transitions, 2563 flow, removed 23 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:38,250 INFO L231 Difference]: Finished difference. Result has 223 places, 241 transitions, 2352 flow [2022-09-20 21:01:38,250 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2352, PETRI_PLACES=223, PETRI_TRANSITIONS=241} [2022-09-20 21:01:38,250 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 131 predicate places. [2022-09-20 21:01:38,250 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 241 transitions, 2352 flow [2022-09-20 21:01:38,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:38,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:38,251 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:38,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:38,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:38,460 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash 775208939, now seen corresponding path program 10 times [2022-09-20 21:01:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:38,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998485184] [2022-09-20 21:01:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:38,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998485184] [2022-09-20 21:01:38,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998485184] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:38,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870949902] [2022-09-20 21:01:38,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 21:01:38,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:38,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:38,788 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:01:38,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-20 21:01:38,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 21:01:38,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:38,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 20 conjunts are in the unsatisfiable core [2022-09-20 21:01:38,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-20 21:01:39,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-20 21:01:41,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870949902] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:41,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:41,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-09-20 21:01:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896218974] [2022-09-20 21:01:41,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-09-20 21:01:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-09-20 21:01:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1143, Unknown=0, NotChecked=0, Total=1260 [2022-09-20 21:01:41,188 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-09-20 21:01:41,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 241 transitions, 2352 flow. Second operand has 36 states, 36 states have (on average 69.69444444444444) internal successors, (2509), 36 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:01:41,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:41,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-09-20 21:01:41,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:04:03,739 INFO L130 PetriNetUnfolder]: 13387/39616 cut-off events. [2022-09-20 21:04:03,739 INFO L131 PetriNetUnfolder]: For 279512/279947 co-relation queries the response was YES. [2022-09-20 21:04:04,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185247 conditions, 39616 events. 13387/39616 cut-off events. For 279512/279947 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 500951 event pairs, 806 based on Foata normal form. 1112/40536 useless extension candidates. Maximal degree in co-relation 184795. Up to 4668 conditions per place. [2022-09-20 21:04:04,590 INFO L137 encePairwiseOnDemand]: 86/104 looper letters, 1145 selfloop transitions, 412 changer transitions 0/1671 dead transitions. [2022-09-20 21:04:04,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1671 transitions, 20435 flow [2022-09-20 21:04:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-09-20 21:04:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2022-09-20 21:04:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 11651 transitions. [2022-09-20 21:04:04,610 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6915360873694207 [2022-09-20 21:04:04,610 INFO L72 ComplementDD]: Start complementDD. Operand 162 states and 11651 transitions. [2022-09-20 21:04:04,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 11651 transitions. [2022-09-20 21:04:04,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:04:04,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 162 states and 11651 transitions. [2022-09-20 21:04:04,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 163 states, 162 states have (on average 71.91975308641975) internal successors, (11651), 162 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:04:04,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 163 states, 163 states have (on average 104.0) internal successors, (16952), 163 states have internal predecessors, (16952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:04:04,649 INFO L81 ComplementDD]: Finished complementDD. Result has 163 states, 163 states have (on average 104.0) internal successors, (16952), 163 states have internal predecessors, (16952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:04:04,649 INFO L175 Difference]: Start difference. First operand has 223 places, 241 transitions, 2352 flow. Second operand 162 states and 11651 transitions. [2022-09-20 21:04:04,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1671 transitions, 20435 flow [2022-09-20 21:04:05,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1671 transitions, 20051 flow, removed 175 selfloop flow, removed 6 redundant places. [2022-09-20 21:04:05,580 INFO L231 Difference]: Finished difference. Result has 474 places, 666 transitions, 7799 flow [2022-09-20 21:04:05,580 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=162, PETRI_FLOW=7799, PETRI_PLACES=474, PETRI_TRANSITIONS=666} [2022-09-20 21:04:05,581 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 382 predicate places. [2022-09-20 21:04:05,581 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 666 transitions, 7799 flow [2022-09-20 21:04:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 69.69444444444444) internal successors, (2509), 36 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:04:05,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:04:05,581 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:04:05,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-09-20 21:04:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-09-20 21:04:05,786 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:04:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:04:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash -565955309, now seen corresponding path program 11 times [2022-09-20 21:04:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:04:05,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146510162] [2022-09-20 21:04:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:04:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:04:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:04:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:04:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:04:06,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146510162] [2022-09-20 21:04:06,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146510162] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:04:06,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146669489] [2022-09-20 21:04:06,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 21:04:06,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:04:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:04:06,079 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:04:06,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-20 21:04:06,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-09-20 21:04:06,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:04:06,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 30 conjunts are in the unsatisfiable core [2022-09-20 21:04:06,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:04:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:04:07,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:04:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:04:10,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146669489] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:04:10,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:04:10,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 18] total 45 [2022-09-20 21:04:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606148826] [2022-09-20 21:04:10,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:04:10,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-09-20 21:04:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:04:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-09-20 21:04:10,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1693, Unknown=0, NotChecked=0, Total=1980 [2022-09-20 21:04:10,189 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-09-20 21:04:10,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 666 transitions, 7799 flow. Second operand has 45 states, 45 states have (on average 69.26666666666667) internal successors, (3117), 45 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:04:10,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:04:10,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-09-20 21:04:10,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:05:19,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:05:24,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:08:15,391 WARN L233 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 64 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:08:38,080 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:09:17,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:11:40,299 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 59 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:13:04,127 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:13:09,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:14:09,753 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:14:28,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:14:44,575 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 67 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-09-20 21:15:26,897 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:15:26,911 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:15:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2022-09-20 21:15:27,235 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 21:15:27,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-09-20 21:15:27,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:15:27,436 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 309 known predicates. [2022-09-20 21:15:27,437 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 21:15:27,437 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 21:15:27,437 INFO L444 BasicCegarLoop]: Path program histogram: [11, 2, 2, 2, 2, 1, 1, 1] [2022-09-20 21:15:27,439 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:15:27,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:15:27,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:15:27 BasicIcfg [2022-09-20 21:15:27,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:15:27,442 INFO L158 Benchmark]: Toolchain (without parser) took 856107.79ms. Allocated memory was 190.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 160.7MB in the beginning and 1.0GB in the end (delta: -857.8MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-09-20 21:15:27,442 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:15:27,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.37ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 160.2MB in the beginning and 205.8MB in the end (delta: -45.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-09-20 21:15:27,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.58ms. Allocated memory is still 234.9MB. Free memory was 205.8MB in the beginning and 204.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:15:27,443 INFO L158 Benchmark]: Boogie Preprocessor took 14.88ms. Allocated memory is still 234.9MB. Free memory was 204.3MB in the beginning and 202.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 21:15:27,443 INFO L158 Benchmark]: RCFGBuilder took 318.03ms. Allocated memory is still 234.9MB. Free memory was 202.7MB in the beginning and 189.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 21:15:27,443 INFO L158 Benchmark]: TraceAbstraction took 855471.86ms. Allocated memory was 234.9MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 188.5MB in the beginning and 1.0GB in the end (delta: -829.9MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-09-20 21:15:27,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.37ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 160.2MB in the beginning and 205.8MB in the end (delta: -45.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.58ms. Allocated memory is still 234.9MB. Free memory was 205.8MB in the beginning and 204.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.88ms. Allocated memory is still 234.9MB. Free memory was 204.3MB in the beginning and 202.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 318.03ms. Allocated memory is still 234.9MB. Free memory was 202.7MB in the beginning and 189.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 855471.86ms. Allocated memory was 234.9MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 188.5MB in the beginning and 1.0GB in the end (delta: -829.9MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 309 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 309 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 309 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 855.4s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 834.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 3088 SdHoareTripleChecker+Valid, 37.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3088 mSDsluCounter, 2706 SdHoareTripleChecker+Invalid, 35.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2117 IncrementalHoareTripleChecker+Unchecked, 4805 mSDsCounter, 672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8225 IncrementalHoareTripleChecker+Invalid, 11017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 672 mSolverCounterUnsat, 380 mSDtfsCounter, 8225 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3341 GetRequests, 2601 SyntacticMatches, 27 SemanticMatches, 712 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53016 ImplicationChecksByTransitivity, 760.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7799occurred in iteration=21, InterpolantAutomatonStates: 341, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 3331 NumberOfCodeBlocks, 3331 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 4611 ConstructedInterpolants, 65 QuantifiedInterpolants, 30977 SizeOfPredicates, 146 NumberOfNonLiveVariables, 2768 ConjunctsInSsa, 247 ConjunctsInUnsatCore, 50 InterpolantComputations, 8 PerfectInterpolantSequences, 147/705 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown