/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:14:33,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:14:33,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:14:33,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:14:33,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:14:33,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:14:33,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:14:33,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:14:33,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:14:33,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:14:33,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:14:33,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:14:33,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:14:33,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:14:33,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:14:33,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:14:33,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:14:33,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:14:33,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:14:33,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:14:33,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:14:33,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:14:33,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:14:33,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:14:33,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:14:33,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:14:33,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:14:33,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:14:33,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:14:33,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:14:33,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:14:33,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:14:33,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:14:33,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:14:33,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:14:33,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:14:33,777 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-VariableLbe.epf [2023-01-27 21:14:33,804 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:14:33,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:14:33,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:14:33,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:14:33,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:14:33,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:14:33,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:14:33,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:14:33,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:14:33,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:14:33,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:14:33,809 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:14:34,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:14:34,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:14:34,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:14:34,081 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:14:34,082 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:14:34,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-01-27 21:14:35,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:14:35,368 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:14:35,369 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-01-27 21:14:35,375 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d710939/428436513a0b449f8c9d306c3b2fadc2/FLAGa09de5e4a [2023-01-27 21:14:35,389 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d710939/428436513a0b449f8c9d306c3b2fadc2 [2023-01-27 21:14:35,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:14:35,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:14:35,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:14:35,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:14:35,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:14:35,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19994cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35, skipping insertion in model container [2023-01-27 21:14:35,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:14:35,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:14:35,618 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2023-01-27 21:14:35,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:14:35,632 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:14:35,661 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2023-01-27 21:14:35,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:14:35,671 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:14:35,672 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:14:35,677 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:14:35,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35 WrapperNode [2023-01-27 21:14:35,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:14:35,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:14:35,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:14:35,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:14:35,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,726 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 478 [2023-01-27 21:14:35,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:14:35,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:14:35,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:14:35,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:14:35,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:14:35,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:14:35,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:14:35,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:14:35,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (1/1) ... [2023-01-27 21:14:35,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:14:35,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:14:35,818 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) [2023-01-27 21:14:35,844 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 [2023-01-27 21:14:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:14:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:14:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:14:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:14:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:14:35,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:14:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:14:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:14:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:14:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:14:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:14:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:14:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:14:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:14:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:14:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:14:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:14:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:14:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:14:35,862 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:14:35,992 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:14:35,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:14:36,499 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:14:36,720 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:14:36,720 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-27 21:14:36,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:14:36 BoogieIcfgContainer [2023-01-27 21:14:36,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:14:36,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:14:36,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:14:36,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:14:36,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:14:35" (1/3) ... [2023-01-27 21:14:36,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e097008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:14:36, skipping insertion in model container [2023-01-27 21:14:36,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:14:35" (2/3) ... [2023-01-27 21:14:36,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e097008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:14:36, skipping insertion in model container [2023-01-27 21:14:36,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:14:36" (3/3) ... [2023-01-27 21:14:36,731 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-01-27 21:14:36,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:14:36,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:14:36,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:14:36,845 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:14:36,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 349 transitions, 730 flow [2023-01-27 21:14:37,068 INFO L130 PetriNetUnfolder]: 37/345 cut-off events. [2023-01-27 21:14:37,068 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:14:37,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 345 events. 37/345 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-01-27 21:14:37,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 349 transitions, 730 flow [2023-01-27 21:14:37,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 333 transitions, 690 flow [2023-01-27 21:14:37,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:14:37,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 333 transitions, 690 flow [2023-01-27 21:14:37,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 333 transitions, 690 flow [2023-01-27 21:14:37,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 333 transitions, 690 flow [2023-01-27 21:14:37,160 INFO L130 PetriNetUnfolder]: 37/333 cut-off events. [2023-01-27 21:14:37,161 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:14:37,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 333 events. 37/333 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 255 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-01-27 21:14:37,167 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-01-27 21:14:49,464 INFO L134 LiptonReduction]: Checked pairs total: 5673 [2023-01-27 21:14:49,464 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-01-27 21:14:49,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:14:49,479 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;@4b5e0d08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:14:49,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:14:49,487 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-01-27 21:14:49,487 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:14:49,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:49,488 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] [2023-01-27 21:14:49,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:49,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1306017517, now seen corresponding path program 1 times [2023-01-27 21:14:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315858860] [2023-01-27 21:14:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:50,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:50,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315858860] [2023-01-27 21:14:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315858860] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:50,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:50,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 21:14:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838280695] [2023-01-27 21:14:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:50,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:14:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:14:50,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:14:50,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 715 [2023-01-27 21:14:50,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:50,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:50,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 715 [2023-01-27 21:14:50,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:50,569 INFO L130 PetriNetUnfolder]: 501/685 cut-off events. [2023-01-27 21:14:50,569 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-01-27 21:14:50,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 685 events. 501/685 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1781 event pairs, 117 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-01-27 21:14:50,576 INFO L137 encePairwiseOnDemand]: 709/715 looper letters, 49 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-01-27 21:14:50,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 265 flow [2023-01-27 21:14:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:14:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:14:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-01-27 21:14:50,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2023-01-27 21:14:50,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-01-27 21:14:50,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-01-27 21:14:50,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:50,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-01-27 21:14:50,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:50,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:50,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:50,621 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 90 flow. Second operand 3 states and 980 transitions. [2023-01-27 21:14:50,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 265 flow [2023-01-27 21:14:50,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:14:50,628 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 107 flow [2023-01-27 21:14:50,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2023-01-27 21:14:50,633 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-01-27 21:14:50,633 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 107 flow [2023-01-27 21:14:50,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:50,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:50,634 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] [2023-01-27 21:14:50,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:14:50,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:50,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -77633324, now seen corresponding path program 1 times [2023-01-27 21:14:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714492651] [2023-01-27 21:14:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:50,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714492651] [2023-01-27 21:14:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714492651] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:50,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:50,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:14:50,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602286996] [2023-01-27 21:14:50,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:14:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:14:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:14:50,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 715 [2023-01-27 21:14:50,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 308.5) internal successors, (1234), 4 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:50,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:50,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 715 [2023-01-27 21:14:50,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:51,393 INFO L130 PetriNetUnfolder]: 901/1249 cut-off events. [2023-01-27 21:14:51,393 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-01-27 21:14:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 1249 events. 901/1249 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3979 event pairs, 267 based on Foata normal form. 72/1317 useless extension candidates. Maximal degree in co-relation 667. Up to 547 conditions per place. [2023-01-27 21:14:51,401 INFO L137 encePairwiseOnDemand]: 712/715 looper letters, 73 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-01-27 21:14:51,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 77 transitions, 368 flow [2023-01-27 21:14:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:14:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:14:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2023-01-27 21:14:51,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486013986013986 [2023-01-27 21:14:51,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2023-01-27 21:14:51,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2023-01-27 21:14:51,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:51,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2023-01-27 21:14:51,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:51,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:51,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:51,413 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 107 flow. Second operand 4 states and 1283 transitions. [2023-01-27 21:14:51,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 77 transitions, 368 flow [2023-01-27 21:14:51,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 77 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:14:51,417 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 126 flow [2023-01-27 21:14:51,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-01-27 21:14:51,418 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2023-01-27 21:14:51,419 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 126 flow [2023-01-27 21:14:51,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.5) internal successors, (1234), 4 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:51,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:51,420 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] [2023-01-27 21:14:51,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:14:51,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:51,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash 813085905, now seen corresponding path program 1 times [2023-01-27 21:14:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:51,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427540649] [2023-01-27 21:14:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427540649] [2023-01-27 21:14:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427540649] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:14:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50113902] [2023-01-27 21:14:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:14:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:14:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:14:51,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 715 [2023-01-27 21:14:51,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:51,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:51,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 715 [2023-01-27 21:14:51,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:52,136 INFO L130 PetriNetUnfolder]: 867/1211 cut-off events. [2023-01-27 21:14:52,136 INFO L131 PetriNetUnfolder]: For 739/739 co-relation queries the response was YES. [2023-01-27 21:14:52,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1211 events. 867/1211 cut-off events. For 739/739 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3904 event pairs, 233 based on Foata normal form. 30/1237 useless extension candidates. Maximal degree in co-relation 1256. Up to 997 conditions per place. [2023-01-27 21:14:52,142 INFO L137 encePairwiseOnDemand]: 711/715 looper letters, 49 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-01-27 21:14:52,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 262 flow [2023-01-27 21:14:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:14:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:14:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2023-01-27 21:14:52,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354312354312354 [2023-01-27 21:14:52,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2023-01-27 21:14:52,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2023-01-27 21:14:52,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:52,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2023-01-27 21:14:52,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,152 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 126 flow. Second operand 3 states and 934 transitions. [2023-01-27 21:14:52,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 262 flow [2023-01-27 21:14:52,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:14:52,156 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 122 flow [2023-01-27 21:14:52,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-01-27 21:14:52,158 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-01-27 21:14:52,160 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 122 flow [2023-01-27 21:14:52,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:52,162 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] [2023-01-27 21:14:52,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:14:52,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:52,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1128617926, now seen corresponding path program 1 times [2023-01-27 21:14:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:52,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213634604] [2023-01-27 21:14:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:52,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:52,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:52,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213634604] [2023-01-27 21:14:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213634604] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:52,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:52,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:14:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400850027] [2023-01-27 21:14:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:52,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:14:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:52,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:14:52,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:14:52,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 715 [2023-01-27 21:14:52,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:52,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 715 [2023-01-27 21:14:52,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:53,255 INFO L130 PetriNetUnfolder]: 2142/3045 cut-off events. [2023-01-27 21:14:53,255 INFO L131 PetriNetUnfolder]: For 1987/1987 co-relation queries the response was YES. [2023-01-27 21:14:53,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7779 conditions, 3045 events. 2142/3045 cut-off events. For 1987/1987 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11823 event pairs, 1089 based on Foata normal form. 120/3154 useless extension candidates. Maximal degree in co-relation 3203. Up to 1308 conditions per place. [2023-01-27 21:14:53,268 INFO L137 encePairwiseOnDemand]: 705/715 looper letters, 120 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-01-27 21:14:53,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 133 transitions, 672 flow [2023-01-27 21:14:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:14:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:14:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1912 transitions. [2023-01-27 21:14:53,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38201798201798204 [2023-01-27 21:14:53,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1912 transitions. [2023-01-27 21:14:53,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1912 transitions. [2023-01-27 21:14:53,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:53,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1912 transitions. [2023-01-27 21:14:53,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 715.0) internal successors, (5720), 8 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 715.0) internal successors, (5720), 8 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,287 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 122 flow. Second operand 7 states and 1912 transitions. [2023-01-27 21:14:53,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 133 transitions, 672 flow [2023-01-27 21:14:53,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 133 transitions, 662 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 21:14:53,290 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 222 flow [2023-01-27 21:14:53,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-01-27 21:14:53,291 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-01-27 21:14:53,291 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 222 flow [2023-01-27 21:14:53,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:53,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:14:53,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:14:53,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:53,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 92803885, now seen corresponding path program 1 times [2023-01-27 21:14:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992202683] [2023-01-27 21:14:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:53,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:53,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992202683] [2023-01-27 21:14:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992202683] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:53,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:53,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:14:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797780977] [2023-01-27 21:14:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:53,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:14:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:53,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:14:53,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:14:53,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 715 [2023-01-27 21:14:53,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:53,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 715 [2023-01-27 21:14:53,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:53,827 INFO L130 PetriNetUnfolder]: 1106/1637 cut-off events. [2023-01-27 21:14:53,828 INFO L131 PetriNetUnfolder]: For 1286/1286 co-relation queries the response was YES. [2023-01-27 21:14:53,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 1637 events. 1106/1637 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5857 event pairs, 785 based on Foata normal form. 60/1696 useless extension candidates. Maximal degree in co-relation 3315. Up to 1212 conditions per place. [2023-01-27 21:14:53,836 INFO L137 encePairwiseOnDemand]: 706/715 looper letters, 36 selfloop transitions, 2 changer transitions 51/89 dead transitions. [2023-01-27 21:14:53,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 476 flow [2023-01-27 21:14:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:14:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:14:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1382 transitions. [2023-01-27 21:14:53,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865734265734266 [2023-01-27 21:14:53,840 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1382 transitions. [2023-01-27 21:14:53,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1382 transitions. [2023-01-27 21:14:53,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:53,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1382 transitions. [2023-01-27 21:14:53,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.4) internal successors, (1382), 5 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,852 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,852 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 222 flow. Second operand 5 states and 1382 transitions. [2023-01-27 21:14:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 476 flow [2023-01-27 21:14:53,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 468 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 21:14:53,857 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 148 flow [2023-01-27 21:14:53,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-01-27 21:14:53,859 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-01-27 21:14:53,859 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 148 flow [2023-01-27 21:14:53,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:53,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:53,860 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] [2023-01-27 21:14:53,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:14:53,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:53,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1880297155, now seen corresponding path program 1 times [2023-01-27 21:14:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105771513] [2023-01-27 21:14:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:14:54,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:54,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105771513] [2023-01-27 21:14:54,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105771513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:54,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:54,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:14:54,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767294130] [2023-01-27 21:14:54,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:14:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:14:54,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:14:54,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 715 [2023-01-27 21:14:54,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:54,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:54,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 715 [2023-01-27 21:14:54,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:54,497 INFO L130 PetriNetUnfolder]: 999/1404 cut-off events. [2023-01-27 21:14:54,497 INFO L131 PetriNetUnfolder]: For 1032/1032 co-relation queries the response was YES. [2023-01-27 21:14:54,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1404 events. 999/1404 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4527 event pairs, 269 based on Foata normal form. 60/1463 useless extension candidates. Maximal degree in co-relation 3630. Up to 533 conditions per place. [2023-01-27 21:14:54,505 INFO L137 encePairwiseOnDemand]: 712/715 looper letters, 66 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-01-27 21:14:54,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 374 flow [2023-01-27 21:14:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:14:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:14:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1262 transitions. [2023-01-27 21:14:54,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44125874125874126 [2023-01-27 21:14:54,509 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1262 transitions. [2023-01-27 21:14:54,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1262 transitions. [2023-01-27 21:14:54,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:54,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1262 transitions. [2023-01-27 21:14:54,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:54,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:54,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:54,517 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 148 flow. Second operand 4 states and 1262 transitions. [2023-01-27 21:14:54,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 374 flow [2023-01-27 21:14:54,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 354 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-01-27 21:14:54,519 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 138 flow [2023-01-27 21:14:54,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-27 21:14:54,520 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-01-27 21:14:54,520 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 138 flow [2023-01-27 21:14:54,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:54,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:54,521 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] [2023-01-27 21:14:54,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:14:54,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:54,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1880354200, now seen corresponding path program 1 times [2023-01-27 21:14:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358643880] [2023-01-27 21:14:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:14:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358643880] [2023-01-27 21:14:54,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358643880] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:14:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507852984] [2023-01-27 21:14:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:54,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:14:54,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:14:54,733 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) [2023-01-27 21:14:54,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:14:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:54,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 21:14:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:14:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:14:55,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:14:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:14:55,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507852984] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:14:55,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:14:55,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-01-27 21:14:55,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541595175] [2023-01-27 21:14:55,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:14:55,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:14:55,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:14:55,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:14:55,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 715 [2023-01-27 21:14:55,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:55,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:55,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 715 [2023-01-27 21:14:55,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:55,909 INFO L130 PetriNetUnfolder]: 1127/1593 cut-off events. [2023-01-27 21:14:55,909 INFO L131 PetriNetUnfolder]: For 1202/1202 co-relation queries the response was YES. [2023-01-27 21:14:55,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 1593 events. 1127/1593 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5420 event pairs, 277 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 4264. Up to 1205 conditions per place. [2023-01-27 21:14:55,918 INFO L137 encePairwiseOnDemand]: 711/715 looper letters, 57 selfloop transitions, 4 changer transitions 3/64 dead transitions. [2023-01-27 21:14:55,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 64 transitions, 338 flow [2023-01-27 21:14:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:14:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:14:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1273 transitions. [2023-01-27 21:14:55,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451048951048951 [2023-01-27 21:14:55,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1273 transitions. [2023-01-27 21:14:55,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1273 transitions. [2023-01-27 21:14:55,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:55,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1273 transitions. [2023-01-27 21:14:55,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:55,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:55,929 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:55,930 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 138 flow. Second operand 4 states and 1273 transitions. [2023-01-27 21:14:55,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 64 transitions, 338 flow [2023-01-27 21:14:55,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 21:14:55,932 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 166 flow [2023-01-27 21:14:55,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-01-27 21:14:55,933 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-01-27 21:14:55,933 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 166 flow [2023-01-27 21:14:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-27 21:14:55,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 21:14:56,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:14:56,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:14:56,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 647196272, now seen corresponding path program 2 times [2023-01-27 21:14:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:56,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374437280] [2023-01-27 21:14:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374437280] [2023-01-27 21:14:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374437280] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:14:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807921326] [2023-01-27 21:14:56,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:14:56,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:14:56,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:14:56,607 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) [2023-01-27 21:14:56,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:14:56,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:14:56,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:14:56,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 21:14:56,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:14:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:14:57,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:14:57,801 INFO L321 Elim1Store]: treesize reduction 38, result has 59.1 percent of original size [2023-01-27 21:14:57,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 299 treesize of output 305 [2023-01-27 21:14:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:14:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807921326] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:14:58,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:14:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-01-27 21:14:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818926807] [2023-01-27 21:14:58,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:14:58,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 21:14:58,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 21:14:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-27 21:14:58,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 715 [2023-01-27 21:14:58,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 166 flow. Second operand has 15 states, 15 states have (on average 234.4) internal successors, (3516), 15 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:58,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:58,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 715 [2023-01-27 21:14:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:15:00,875 INFO L130 PetriNetUnfolder]: 4895/6995 cut-off events. [2023-01-27 21:15:00,875 INFO L131 PetriNetUnfolder]: For 6292/6292 co-relation queries the response was YES. [2023-01-27 21:15:00,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19324 conditions, 6995 events. 4895/6995 cut-off events. For 6292/6292 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 33236 event pairs, 1016 based on Foata normal form. 245/7222 useless extension candidates. Maximal degree in co-relation 10899. Up to 2147 conditions per place. [2023-01-27 21:15:00,908 INFO L137 encePairwiseOnDemand]: 702/715 looper letters, 211 selfloop transitions, 49 changer transitions 82/342 dead transitions. [2023-01-27 21:15:00,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 342 transitions, 1775 flow [2023-01-27 21:15:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 21:15:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 21:15:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5603 transitions. [2023-01-27 21:15:00,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34071146245059286 [2023-01-27 21:15:00,923 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5603 transitions. [2023-01-27 21:15:00,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5603 transitions. [2023-01-27 21:15:00,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:15:00,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5603 transitions. [2023-01-27 21:15:00,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 243.6086956521739) internal successors, (5603), 23 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:00,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 715.0) internal successors, (17160), 24 states have internal predecessors, (17160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:00,962 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 715.0) internal successors, (17160), 24 states have internal predecessors, (17160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:00,962 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 166 flow. Second operand 23 states and 5603 transitions. [2023-01-27 21:15:00,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 342 transitions, 1775 flow [2023-01-27 21:15:00,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 342 transitions, 1752 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-27 21:15:00,978 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 656 flow [2023-01-27 21:15:00,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=656, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2023-01-27 21:15:00,978 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-01-27 21:15:00,978 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 656 flow [2023-01-27 21:15:00,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 234.4) internal successors, (3516), 15 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:00,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:15:00,980 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] [2023-01-27 21:15:00,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 21:15:01,185 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,SelfDestructingSolverStorable7 [2023-01-27 21:15:01,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:15:01,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:15:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash -89114196, now seen corresponding path program 1 times [2023-01-27 21:15:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:15:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433673965] [2023-01-27 21:15:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:15:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:15:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:15:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:15:02,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:15:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433673965] [2023-01-27 21:15:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433673965] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:15:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035616583] [2023-01-27 21:15:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:15:02,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:15:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:15:02,487 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) [2023-01-27 21:15:02,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 21:15:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:15:02,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-27 21:15:02,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:15:02,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 21:15:02,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:15:02,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:15:03,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:15:03,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:15:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:15:03,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:15:07,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:15:07,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2023-01-27 21:15:07,633 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 21:15:07,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1606 treesize of output 1545 [2023-01-27 21:15:07,678 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:15:07,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 330 [2023-01-27 21:15:07,692 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:15:07,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 306 [2023-01-27 21:15:07,707 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:15:07,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 210 [2023-01-27 21:15:07,723 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:15:07,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 98 [2023-01-27 21:15:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:15:07,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035616583] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:15:07,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:15:07,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-01-27 21:15:07,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155871463] [2023-01-27 21:15:07,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:15:07,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 21:15:07,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:15:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 21:15:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=561, Unknown=20, NotChecked=0, Total=756 [2023-01-27 21:15:07,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 715 [2023-01-27 21:15:07,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 656 flow. Second operand has 28 states, 28 states have (on average 195.0) internal successors, (5460), 28 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:07,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:15:07,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 715 [2023-01-27 21:15:07,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:15:12,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:19,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:22,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:24,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:26,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:28,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:30,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:32,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:34,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:36,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:38,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:40,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:42,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:45,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:47,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:49,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:51,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:15:51,708 INFO L130 PetriNetUnfolder]: 6564/9557 cut-off events. [2023-01-27 21:15:51,709 INFO L131 PetriNetUnfolder]: For 15226/15226 co-relation queries the response was YES. [2023-01-27 21:15:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29598 conditions, 9557 events. 6564/9557 cut-off events. For 15226/15226 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49419 event pairs, 1719 based on Foata normal form. 5/9559 useless extension candidates. Maximal degree in co-relation 28461. Up to 5440 conditions per place. [2023-01-27 21:15:51,750 INFO L137 encePairwiseOnDemand]: 696/715 looper letters, 166 selfloop transitions, 67 changer transitions 74/307 dead transitions. [2023-01-27 21:15:51,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 307 transitions, 2031 flow [2023-01-27 21:15:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 21:15:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 21:15:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5052 transitions. [2023-01-27 21:15:51,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2826293706293706 [2023-01-27 21:15:51,765 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5052 transitions. [2023-01-27 21:15:51,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5052 transitions. [2023-01-27 21:15:51,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:15:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5052 transitions. [2023-01-27 21:15:51,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 202.08) internal successors, (5052), 25 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:51,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 715.0) internal successors, (18590), 26 states have internal predecessors, (18590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:51,798 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 715.0) internal successors, (18590), 26 states have internal predecessors, (18590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:51,799 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 656 flow. Second operand 25 states and 5052 transitions. [2023-01-27 21:15:51,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 307 transitions, 2031 flow [2023-01-27 21:15:51,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 307 transitions, 1954 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-01-27 21:15:51,843 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 1199 flow [2023-01-27 21:15:51,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1199, PETRI_PLACES=113, PETRI_TRANSITIONS=139} [2023-01-27 21:15:51,844 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-01-27 21:15:51,844 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 1199 flow [2023-01-27 21:15:51,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 195.0) internal successors, (5460), 28 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:51,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:15:51,846 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] [2023-01-27 21:15:51,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 21:15:52,051 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 [2023-01-27 21:15:52,051 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:15:52,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:15:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash 739054753, now seen corresponding path program 1 times [2023-01-27 21:15:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:15:52,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027469563] [2023-01-27 21:15:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:15:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:15:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:15:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:15:52,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:15:52,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027469563] [2023-01-27 21:15:52,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027469563] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:15:52,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328158480] [2023-01-27 21:15:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:15:52,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:15:52,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:15:52,428 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) [2023-01-27 21:15:52,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 21:15:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:15:52,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 21:15:52,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:15:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:15:53,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:15:55,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:15:55,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 740 treesize of output 815 [2023-01-27 21:15:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:15:56,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328158480] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:15:56,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:15:56,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-01-27 21:15:56,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990914914] [2023-01-27 21:15:56,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:15:56,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 21:15:56,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:15:56,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 21:15:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-01-27 21:15:56,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 715 [2023-01-27 21:15:56,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 139 transitions, 1199 flow. Second operand has 12 states, 12 states have (on average 224.41666666666666) internal successors, (2693), 12 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:56,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:15:56,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 715 [2023-01-27 21:15:56,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:00,011 INFO L130 PetriNetUnfolder]: 12723/18637 cut-off events. [2023-01-27 21:16:00,012 INFO L131 PetriNetUnfolder]: For 42620/42620 co-relation queries the response was YES. [2023-01-27 21:16:00,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61975 conditions, 18637 events. 12723/18637 cut-off events. For 42620/42620 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 107868 event pairs, 4010 based on Foata normal form. 1176/19812 useless extension candidates. Maximal degree in co-relation 57314. Up to 3743 conditions per place. [2023-01-27 21:16:00,152 INFO L137 encePairwiseOnDemand]: 707/715 looper letters, 272 selfloop transitions, 76 changer transitions 16/364 dead transitions. [2023-01-27 21:16:00,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 364 transitions, 3340 flow [2023-01-27 21:16:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 21:16:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 21:16:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3023 transitions. [2023-01-27 21:16:00,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3252286175363098 [2023-01-27 21:16:00,160 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3023 transitions. [2023-01-27 21:16:00,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3023 transitions. [2023-01-27 21:16:00,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:00,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3023 transitions. [2023-01-27 21:16:00,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.53846153846155) internal successors, (3023), 13 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:00,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 715.0) internal successors, (10010), 14 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:00,176 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 715.0) internal successors, (10010), 14 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:00,177 INFO L175 Difference]: Start difference. First operand has 113 places, 139 transitions, 1199 flow. Second operand 13 states and 3023 transitions. [2023-01-27 21:16:00,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 364 transitions, 3340 flow [2023-01-27 21:16:00,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 364 transitions, 3262 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-01-27 21:16:00,318 INFO L231 Difference]: Finished difference. Result has 127 places, 179 transitions, 1821 flow [2023-01-27 21:16:00,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1821, PETRI_PLACES=127, PETRI_TRANSITIONS=179} [2023-01-27 21:16:00,318 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2023-01-27 21:16:00,318 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 179 transitions, 1821 flow [2023-01-27 21:16:00,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 224.41666666666666) internal successors, (2693), 12 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:00,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:00,319 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] [2023-01-27 21:16:00,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 21:16:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:00,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:16:00,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1016012573, now seen corresponding path program 1 times [2023-01-27 21:16:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793987097] [2023-01-27 21:16:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:16:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:01,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793987097] [2023-01-27 21:16:01,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793987097] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:16:01,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781326582] [2023-01-27 21:16:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:01,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:01,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:16:01,048 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) [2023-01-27 21:16:01,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 21:16:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 21:16:01,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:16:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:16:01,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:16:01,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781326582] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:16:01,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:16:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-27 21:16:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040033122] [2023-01-27 21:16:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:16:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:16:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:16:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:16:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:16:01,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 715 [2023-01-27 21:16:01,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 179 transitions, 1821 flow. Second operand has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:01,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:16:01,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 715 [2023-01-27 21:16:01,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:05,935 INFO L130 PetriNetUnfolder]: 17572/26004 cut-off events. [2023-01-27 21:16:05,935 INFO L131 PetriNetUnfolder]: For 69677/69677 co-relation queries the response was YES. [2023-01-27 21:16:06,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90247 conditions, 26004 events. 17572/26004 cut-off events. For 69677/69677 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 163480 event pairs, 10898 based on Foata normal form. 720/26722 useless extension candidates. Maximal degree in co-relation 86449. Up to 8993 conditions per place. [2023-01-27 21:16:06,093 INFO L137 encePairwiseOnDemand]: 706/715 looper letters, 274 selfloop transitions, 45 changer transitions 0/319 dead transitions. [2023-01-27 21:16:06,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 319 transitions, 3695 flow [2023-01-27 21:16:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:16:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:16:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1660 transitions. [2023-01-27 21:16:06,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2023-01-27 21:16:06,097 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1660 transitions. [2023-01-27 21:16:06,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1660 transitions. [2023-01-27 21:16:06,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:06,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1660 transitions. [2023-01-27 21:16:06,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:06,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:06,104 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:06,104 INFO L175 Difference]: Start difference. First operand has 127 places, 179 transitions, 1821 flow. Second operand 6 states and 1660 transitions. [2023-01-27 21:16:06,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 319 transitions, 3695 flow [2023-01-27 21:16:06,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 319 transitions, 3550 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-01-27 21:16:06,604 INFO L231 Difference]: Finished difference. Result has 131 places, 183 transitions, 1887 flow [2023-01-27 21:16:06,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1887, PETRI_PLACES=131, PETRI_TRANSITIONS=183} [2023-01-27 21:16:06,605 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2023-01-27 21:16:06,605 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 183 transitions, 1887 flow [2023-01-27 21:16:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:06,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:06,606 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-27 21:16:06,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 21:16:06,815 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,SelfDestructingSolverStorable10 [2023-01-27 21:16:06,815 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:16:06,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1443183413, now seen corresponding path program 1 times [2023-01-27 21:16:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554193427] [2023-01-27 21:16:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:16:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554193427] [2023-01-27 21:16:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554193427] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:16:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414315538] [2023-01-27 21:16:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:16:08,200 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) [2023-01-27 21:16:08,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 21:16:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:08,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 21:16:08,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:16:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:16:08,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:16:10,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:16:10,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 419 treesize of output 602 [2023-01-27 21:16:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:16:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414315538] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:16:18,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:16:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 13 [2023-01-27 21:16:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601987976] [2023-01-27 21:16:18,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:16:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 21:16:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:16:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 21:16:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-01-27 21:16:18,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 715 [2023-01-27 21:16:18,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 183 transitions, 1887 flow. Second operand has 15 states, 15 states have (on average 213.93333333333334) internal successors, (3209), 15 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:18,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:16:18,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 715 [2023-01-27 21:16:18,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:25,072 INFO L130 PetriNetUnfolder]: 22877/34050 cut-off events. [2023-01-27 21:16:25,073 INFO L131 PetriNetUnfolder]: For 82906/82906 co-relation queries the response was YES. [2023-01-27 21:16:25,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117176 conditions, 34050 events. 22877/34050 cut-off events. For 82906/82906 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 224164 event pairs, 4896 based on Foata normal form. 20/34069 useless extension candidates. Maximal degree in co-relation 112305. Up to 16157 conditions per place. [2023-01-27 21:16:25,402 INFO L137 encePairwiseOnDemand]: 703/715 looper letters, 228 selfloop transitions, 135 changer transitions 98/461 dead transitions. [2023-01-27 21:16:25,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 461 transitions, 4259 flow [2023-01-27 21:16:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 21:16:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 21:16:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4053 transitions. [2023-01-27 21:16:25,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31491841491841494 [2023-01-27 21:16:25,411 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4053 transitions. [2023-01-27 21:16:25,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4053 transitions. [2023-01-27 21:16:25,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:25,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4053 transitions. [2023-01-27 21:16:25,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 225.16666666666666) internal successors, (4053), 18 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:25,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 715.0) internal successors, (13585), 19 states have internal predecessors, (13585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:25,434 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 715.0) internal successors, (13585), 19 states have internal predecessors, (13585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:25,434 INFO L175 Difference]: Start difference. First operand has 131 places, 183 transitions, 1887 flow. Second operand 18 states and 4053 transitions. [2023-01-27 21:16:25,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 461 transitions, 4259 flow [2023-01-27 21:16:26,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 461 transitions, 4199 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-27 21:16:26,014 INFO L231 Difference]: Finished difference. Result has 152 places, 237 transitions, 2902 flow [2023-01-27 21:16:26,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2902, PETRI_PLACES=152, PETRI_TRANSITIONS=237} [2023-01-27 21:16:26,015 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 114 predicate places. [2023-01-27 21:16:26,015 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 237 transitions, 2902 flow [2023-01-27 21:16:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 213.93333333333334) internal successors, (3209), 15 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:26,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:26,017 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] [2023-01-27 21:16:26,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 21:16:26,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:26,226 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:16:26,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash -321419699, now seen corresponding path program 1 times [2023-01-27 21:16:26,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:26,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319864118] [2023-01-27 21:16:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:16:26,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:26,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319864118] [2023-01-27 21:16:26,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319864118] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:16:26,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627708380] [2023-01-27 21:16:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:26,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:26,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:16:26,693 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) [2023-01-27 21:16:26,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 21:16:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:26,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 21:16:26,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:16:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:16:27,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:16:28,963 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:16:28,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 743 treesize of output 818 [2023-01-27 21:16:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:16:30,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627708380] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:16:30,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:16:30,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-01-27 21:16:30,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054235966] [2023-01-27 21:16:30,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:16:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:16:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:16:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:16:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:16:30,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 715 [2023-01-27 21:16:30,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 237 transitions, 2902 flow. Second operand has 9 states, 9 states have (on average 264.44444444444446) internal successors, (2380), 9 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:30,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:16:30,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 715 [2023-01-27 21:16:30,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:36,228 INFO L130 PetriNetUnfolder]: 21033/31588 cut-off events. [2023-01-27 21:16:36,228 INFO L131 PetriNetUnfolder]: For 99189/99189 co-relation queries the response was YES. [2023-01-27 21:16:36,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112469 conditions, 31588 events. 21033/31588 cut-off events. For 99189/99189 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 207761 event pairs, 8966 based on Foata normal form. 384/31971 useless extension candidates. Maximal degree in co-relation 108651. Up to 12935 conditions per place. [2023-01-27 21:16:36,490 INFO L137 encePairwiseOnDemand]: 711/715 looper letters, 198 selfloop transitions, 50 changer transitions 8/256 dead transitions. [2023-01-27 21:16:36,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 256 transitions, 3282 flow [2023-01-27 21:16:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:16:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:16:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1369 transitions. [2023-01-27 21:16:36,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829370629370629 [2023-01-27 21:16:36,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1369 transitions. [2023-01-27 21:16:36,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1369 transitions. [2023-01-27 21:16:36,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:36,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1369 transitions. [2023-01-27 21:16:36,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.8) internal successors, (1369), 5 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:36,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:36,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:36,498 INFO L175 Difference]: Start difference. First operand has 152 places, 237 transitions, 2902 flow. Second operand 5 states and 1369 transitions. [2023-01-27 21:16:36,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 256 transitions, 3282 flow [2023-01-27 21:16:37,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 256 transitions, 3042 flow, removed 84 selfloop flow, removed 6 redundant places. [2023-01-27 21:16:37,259 INFO L231 Difference]: Finished difference. Result has 151 places, 216 transitions, 2484 flow [2023-01-27 21:16:37,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2484, PETRI_PLACES=151, PETRI_TRANSITIONS=216} [2023-01-27 21:16:37,260 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 113 predicate places. [2023-01-27 21:16:37,260 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 216 transitions, 2484 flow [2023-01-27 21:16:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 264.44444444444446) internal successors, (2380), 9 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:37,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:37,261 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:16:37,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 21:16:37,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:37,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:16:37,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2032046894, now seen corresponding path program 2 times [2023-01-27 21:16:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674547790] [2023-01-27 21:16:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:37,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:16:38,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674547790] [2023-01-27 21:16:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674547790] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:16:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279577236] [2023-01-27 21:16:38,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:16:38,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:16:38,137 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) [2023-01-27 21:16:38,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 21:16:38,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:16:38,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:16:38,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:16:38,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:16:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:16:38,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:16:41,005 INFO L321 Elim1Store]: treesize reduction 114, result has 68.9 percent of original size [2023-01-27 21:16:41,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 833 treesize of output 965 [2023-01-27 21:16:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:16:44,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279577236] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:16:44,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:16:44,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-01-27 21:16:44,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753267609] [2023-01-27 21:16:44,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:16:44,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 21:16:44,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:16:44,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 21:16:44,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-01-27 21:16:44,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 715 [2023-01-27 21:16:44,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 216 transitions, 2484 flow. Second operand has 14 states, 14 states have (on average 211.85714285714286) internal successors, (2966), 14 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:44,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:16:44,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 715 [2023-01-27 21:16:44,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:49,784 INFO L130 PetriNetUnfolder]: 19195/29015 cut-off events. [2023-01-27 21:16:49,784 INFO L131 PetriNetUnfolder]: For 83954/83954 co-relation queries the response was YES. [2023-01-27 21:16:49,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99422 conditions, 29015 events. 19195/29015 cut-off events. For 83954/83954 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 189636 event pairs, 4768 based on Foata normal form. 528/29542 useless extension candidates. Maximal degree in co-relation 95860. Up to 6377 conditions per place. [2023-01-27 21:16:49,961 INFO L137 encePairwiseOnDemand]: 703/715 looper letters, 278 selfloop transitions, 130 changer transitions 99/507 dead transitions. [2023-01-27 21:16:49,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 507 transitions, 5164 flow [2023-01-27 21:16:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 21:16:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 21:16:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5265 transitions. [2023-01-27 21:16:49,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2023-01-27 21:16:49,967 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5265 transitions. [2023-01-27 21:16:49,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5265 transitions. [2023-01-27 21:16:49,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:49,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5265 transitions. [2023-01-27 21:16:49,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 219.375) internal successors, (5265), 24 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:49,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 715.0) internal successors, (17875), 25 states have internal predecessors, (17875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:49,987 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 715.0) internal successors, (17875), 25 states have internal predecessors, (17875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:49,987 INFO L175 Difference]: Start difference. First operand has 151 places, 216 transitions, 2484 flow. Second operand 24 states and 5265 transitions. [2023-01-27 21:16:49,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 507 transitions, 5164 flow [2023-01-27 21:16:50,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 507 transitions, 5022 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 21:16:50,601 INFO L231 Difference]: Finished difference. Result has 175 places, 218 transitions, 2851 flow [2023-01-27 21:16:50,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2851, PETRI_PLACES=175, PETRI_TRANSITIONS=218} [2023-01-27 21:16:50,602 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 137 predicate places. [2023-01-27 21:16:50,602 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 218 transitions, 2851 flow [2023-01-27 21:16:50,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 211.85714285714286) internal successors, (2966), 14 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:50,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:50,603 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-27 21:16:50,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 21:16:50,803 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,SelfDestructingSolverStorable13 [2023-01-27 21:16:50,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:16:50,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash 599093027, now seen corresponding path program 2 times [2023-01-27 21:16:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034085274] [2023-01-27 21:16:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:50,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:16:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034085274] [2023-01-27 21:16:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034085274] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:16:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756128578] [2023-01-27 21:16:53,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:16:53,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:16:53,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:16:53,149 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) [2023-01-27 21:16:53,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 21:16:53,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:16:53,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:16:53,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 21:16:53,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:16:53,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 21:16:53,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:16:53,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:16:53,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:16:53,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:16:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:16:54,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:17:17,772 WARN L222 SmtUtils]: Spent 17.20s on a formula simplification. DAG size of input: 158 DAG size of output: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:17:22,958 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~node1_back~0 0)) (.cse2 (<= c_~node1_size~0 c_~node1_back~0)) (.cse9 (<= (+ c_~node1_back~0 1) c_~node1_front~0)) (.cse4 (+ c_~node1~0.offset (* c_~node1_back~0 4))) (.cse1 (= c_~manager_state~0 1)) (.cse11 (= c_~manager_state~0 0)) (.cse21 (<= c_~node1_back~0 c_~node1_front~0)) (.cse22 (<= c_~node1_size~0 c_~node1_front~0)) (.cse8 (< c_~node1_front~0 0)) (.cse6 (+ c_~node1~0.offset (* c_~node1_front~0 4))) (.cse10 (= c_~node1_state~0 0)) (.cse23 (= 2 c_~manager_state~0))) (and (or .cse0 (not .cse1) .cse2 (and (or (forall ((~node2~0.base Int) (v_~node2_back~0_103 Int) (v_ArrVal_881 (Array Int Int)) (~node2~0.offset Int) (v_ArrVal_882 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_881) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_882))) (let ((.cse3 (select .cse7 c_~node1~0.base)) (.cse5 (select (select .cse7 ~node2~0.base) (+ ~node2~0.offset (* v_~node2_back~0_103 4))))) (or (not (= (select .cse3 .cse4) .cse5)) (< v_~node2_back~0_103 0) (= (select .cse3 .cse6) .cse5))))) .cse8 .cse9) .cse10)) (or .cse0 (not .cse11) .cse2 (and (or .cse8 (forall ((~manager~0.base Int) (v_ArrVal_881 (Array Int Int)) (v_~manager_front~0_154 Int) (v_ArrVal_882 (Array Int Int)) (~manager~0.offset Int)) (let ((.cse14 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_881) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_882))) (let ((.cse13 (select .cse14 c_~node1~0.base))) (let ((.cse12 (select .cse13 .cse4))) (or (= .cse12 (select .cse13 .cse6)) (< v_~manager_front~0_154 1) (= .cse12 (select (select .cse14 ~manager~0.base) (+ ~manager~0.offset (- 4) (* v_~manager_front~0_154 4))))))))) .cse9) (or .cse10 (forall ((~manager~0.base Int) (v_ArrVal_881 (Array Int Int)) (v_~manager_front~0_154 Int) (v_ArrVal_882 (Array Int Int)) (~manager~0.offset Int)) (or (< v_~manager_front~0_154 1) (let ((.cse15 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_881) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_882))) (= (select (select .cse15 c_~node1~0.base) .cse4) (select (select .cse15 ~manager~0.base) (+ ~manager~0.offset (- 4) (* v_~manager_front~0_154 4)))))))))) (or (let ((.cse17 (= c_~node1_state~0 1))) (and (or (forall ((~manager~0.base Int) (~client~0.base Int) (v_ArrVal_881 (Array Int Int)) (~client~0.offset Int) (v_~manager_front~0_154 Int) (v_ArrVal_882 (Array Int Int)) (v_~client_back~0_107 Int) (~manager~0.offset Int)) (or (< v_~manager_front~0_154 1) (let ((.cse16 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_881) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_882))) (= (select (select .cse16 ~client~0.base) (+ (* v_~client_back~0_107 4) ~client~0.offset)) (select (select .cse16 ~manager~0.base) (+ ~manager~0.offset (- 4) (* v_~manager_front~0_154 4))))) (< v_~client_back~0_107 0))) .cse10 .cse17) (or (not .cse17) (forall ((~manager~0.base Int) (~manager_back~0 Int) (~client~0.base Int) (v_ArrVal_881 (Array Int Int)) (~client~0.offset Int) (v_~manager_front~0_154 Int) (v_ArrVal_882 (Array Int Int)) (v_~client_back~0_107 Int) (~manager~0.offset Int)) (let ((.cse20 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_881) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_882))) (let ((.cse18 (select (select .cse20 ~client~0.base) (+ (* v_~client_back~0_107 4) ~client~0.offset))) (.cse19 (select .cse20 ~manager~0.base))) (or (< v_~manager_front~0_154 1) (not (= .cse18 (select .cse19 (+ ~manager~0.offset (* ~manager_back~0 4))))) (<= (+ ~manager_back~0 1) v_~manager_front~0_154) (= .cse18 (select .cse19 (+ ~manager~0.offset (- 4) (* v_~manager_front~0_154 4)))) (< v_~client_back~0_107 0)))))) (or (= c_~manager_state~0 4) .cse10) (or .cse21 .cse22 .cse8 (not .cse10)))) .cse1 .cse11 .cse23) (or (and (or .cse21 .cse22 .cse8 (forall ((~node2~0.base Int) (v_~node2_back~0_103 Int) (v_ArrVal_881 (Array Int Int)) (~node2~0.offset Int) (v_ArrVal_882 (Array Int Int))) (or (< v_~node2_back~0_103 1) (let ((.cse24 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_881) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_882))) (= (select (select .cse24 c_~node1~0.base) .cse6) (select (select .cse24 ~node2~0.base) (+ ~node2~0.offset (* v_~node2_back~0_103 4) (- 4)))))))) .cse10) (not .cse23)))) is different from false [2023-01-27 21:17:25,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:17:25,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 101 [2023-01-27 21:17:25,504 INFO L321 Elim1Store]: treesize reduction 14, result has 72.0 percent of original size [2023-01-27 21:17:25,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6881260 treesize of output 6610959 [2023-01-27 21:17:29,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:17:29,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:17:29,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 12892 treesize of output 9725 [2023-01-27 21:17:29,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:17:29,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:17:29,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 9692 treesize of output 9325 [2023-01-27 21:17:30,077 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:17:30,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:17:30,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 9292 treesize of output 8525 [2023-01-27 21:17:30,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:17:30,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:17:30,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 8492 treesize of output 6925 [2023-01-27 21:18:11,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:11,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2023-01-27 21:18:11,546 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-27 21:18:11,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215030 treesize of output 206342 [2023-01-27 21:18:12,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:12,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6438 treesize of output 5623 [2023-01-27 21:18:12,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:12,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5606 treesize of output 5207 [2023-01-27 21:18:13,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:13,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5190 treesize of output 4999 [2023-01-27 21:18:13,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:13,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4982 treesize of output 3335 [2023-01-27 21:18:25,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:25,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2023-01-27 21:18:25,401 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-27 21:18:25,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107510 treesize of output 103174 [2023-01-27 21:18:26,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:26,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6438 treesize of output 6247 [2023-01-27 21:18:26,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:26,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6230 treesize of output 5831 [2023-01-27 21:18:26,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:26,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5814 treesize of output 4999 [2023-01-27 21:18:26,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:26,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4982 treesize of output 3335 [2023-01-27 21:18:31,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:31,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 100 [2023-01-27 21:18:31,581 INFO L321 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2023-01-27 21:18:31,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54547 treesize of output 52378 [2023-01-27 21:18:32,927 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:32,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:32,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 6815 treesize of output 5969 [2023-01-27 21:18:33,039 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:33,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:33,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 5776 treesize of output 5590 [2023-01-27 21:18:33,160 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:33,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:33,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 5715 treesize of output 5309 [2023-01-27 21:18:33,287 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:33,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:33,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 5275 treesize of output 3549 [2023-01-27 21:18:48,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:48,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 100 [2023-01-27 21:18:48,620 INFO L321 Elim1Store]: treesize reduction 9, result has 80.9 percent of original size [2023-01-27 21:18:48,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13500396 treesize of output 12976145 [2023-01-27 21:18:53,652 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:53,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:53,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 12652 treesize of output 11916 [2023-01-27 21:18:53,830 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:53,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:53,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 11884 treesize of output 11532 [2023-01-27 21:18:54,012 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:54,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:54,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 11500 treesize of output 8460 [2023-01-27 21:18:54,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:18:54,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:18:54,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 8428 treesize of output 6924 [2023-01-27 21:19:16,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:19:16,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2023-01-27 21:19:16,894 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-27 21:19:16,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53750 treesize of output 51590 [2023-01-27 21:19:18,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:19:18,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6438 treesize of output 6039 [2023-01-27 21:19:18,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:19:18,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6022 treesize of output 4375 [2023-01-27 21:19:18,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:19:18,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4358 treesize of output 4167 [2023-01-27 21:19:18,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:19:18,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4150 treesize of output 3335 [2023-01-27 21:19:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:19:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756128578] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:19:27,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:19:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2023-01-27 21:19:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380064278] [2023-01-27 21:19:27,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:19:27,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-27 21:19:27,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:19:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-27 21:19:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=886, Unknown=36, NotChecked=64, Total=1190 [2023-01-27 21:19:27,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 715 [2023-01-27 21:19:27,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 218 transitions, 2851 flow. Second operand has 35 states, 35 states have (on average 175.37142857142857) internal successors, (6138), 35 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:19:27,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:19:27,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 715 [2023-01-27 21:19:27,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:20:05,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 21:20:05,182 INFO L130 PetriNetUnfolder]: 39152/58976 cut-off events. [2023-01-27 21:20:05,182 INFO L131 PetriNetUnfolder]: For 212743/212743 co-relation queries the response was YES. [2023-01-27 21:20:05,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211826 conditions, 58976 events. 39152/58976 cut-off events. For 212743/212743 co-relation queries the response was YES. Maximal size of possible extension queue 2157. Compared 429152 event pairs, 6450 based on Foata normal form. 26/59002 useless extension candidates. Maximal degree in co-relation 203390. Up to 8934 conditions per place. [2023-01-27 21:20:05,899 INFO L137 encePairwiseOnDemand]: 697/715 looper letters, 594 selfloop transitions, 353 changer transitions 234/1181 dead transitions. [2023-01-27 21:20:05,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1181 transitions, 12097 flow [2023-01-27 21:20:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-01-27 21:20:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-01-27 21:20:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 12725 transitions. [2023-01-27 21:20:05,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25793047532177965 [2023-01-27 21:20:05,916 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 12725 transitions. [2023-01-27 21:20:05,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 12725 transitions. [2023-01-27 21:20:05,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:20:05,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 12725 transitions. [2023-01-27 21:20:05,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 184.42028985507247) internal successors, (12725), 69 states have internal predecessors, (12725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:05,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 715.0) internal successors, (50050), 70 states have internal predecessors, (50050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:05,972 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 715.0) internal successors, (50050), 70 states have internal predecessors, (50050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:05,973 INFO L175 Difference]: Start difference. First operand has 175 places, 218 transitions, 2851 flow. Second operand 69 states and 12725 transitions. [2023-01-27 21:20:05,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1181 transitions, 12097 flow [2023-01-27 21:20:11,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1181 transitions, 11336 flow, removed 239 selfloop flow, removed 15 redundant places. [2023-01-27 21:20:11,027 INFO L231 Difference]: Finished difference. Result has 246 places, 481 transitions, 7357 flow [2023-01-27 21:20:11,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=2639, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=7357, PETRI_PLACES=246, PETRI_TRANSITIONS=481} [2023-01-27 21:20:11,028 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 208 predicate places. [2023-01-27 21:20:11,028 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 481 transitions, 7357 flow [2023-01-27 21:20:11,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 175.37142857142857) internal successors, (6138), 35 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:11,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:20:11,029 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:20:11,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 21:20:11,230 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,SelfDestructingSolverStorable14 [2023-01-27 21:20:11,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:20:11,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:20:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2040170978, now seen corresponding path program 1 times [2023-01-27 21:20:11,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:20:11,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930004711] [2023-01-27 21:20:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:20:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:20:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:20:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:20:11,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:20:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930004711] [2023-01-27 21:20:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930004711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:20:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840949579] [2023-01-27 21:20:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:20:11,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:20:11,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:20:11,621 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) [2023-01-27 21:20:11,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 21:20:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:20:11,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 21:20:11,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:20:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:20:12,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:20:14,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:20:14,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 481 treesize of output 670 [2023-01-27 21:20:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:20:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840949579] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:20:18,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:20:18,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-27 21:20:18,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331330799] [2023-01-27 21:20:18,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:20:18,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 21:20:18,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:20:18,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 21:20:18,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-01-27 21:20:18,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 715 [2023-01-27 21:20:18,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 481 transitions, 7357 flow. Second operand has 16 states, 16 states have (on average 221.375) internal successors, (3542), 16 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:18,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:20:18,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 715 [2023-01-27 21:20:18,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:20:29,395 INFO L130 PetriNetUnfolder]: 31402/47739 cut-off events. [2023-01-27 21:20:29,395 INFO L131 PetriNetUnfolder]: For 375782/375782 co-relation queries the response was YES. [2023-01-27 21:20:29,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225391 conditions, 47739 events. 31402/47739 cut-off events. For 375782/375782 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 340459 event pairs, 8020 based on Foata normal form. 1902/49641 useless extension candidates. Maximal degree in co-relation 225316. Up to 10886 conditions per place. [2023-01-27 21:20:30,084 INFO L137 encePairwiseOnDemand]: 709/715 looper letters, 332 selfloop transitions, 137 changer transitions 96/565 dead transitions. [2023-01-27 21:20:30,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 565 transitions, 8158 flow [2023-01-27 21:20:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 21:20:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 21:20:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3451 transitions. [2023-01-27 21:20:30,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217715617715618 [2023-01-27 21:20:30,087 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3451 transitions. [2023-01-27 21:20:30,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3451 transitions. [2023-01-27 21:20:30,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:20:30,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3451 transitions. [2023-01-27 21:20:30,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 230.06666666666666) internal successors, (3451), 15 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:30,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 715.0) internal successors, (11440), 16 states have internal predecessors, (11440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:30,098 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 715.0) internal successors, (11440), 16 states have internal predecessors, (11440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:30,098 INFO L175 Difference]: Start difference. First operand has 246 places, 481 transitions, 7357 flow. Second operand 15 states and 3451 transitions. [2023-01-27 21:20:30,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 565 transitions, 8158 flow [2023-01-27 21:20:35,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 565 transitions, 6855 flow, removed 446 selfloop flow, removed 26 redundant places. [2023-01-27 21:20:35,293 INFO L231 Difference]: Finished difference. Result has 221 places, 335 transitions, 4320 flow [2023-01-27 21:20:35,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4320, PETRI_PLACES=221, PETRI_TRANSITIONS=335} [2023-01-27 21:20:35,293 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 183 predicate places. [2023-01-27 21:20:35,294 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 335 transitions, 4320 flow [2023-01-27 21:20:35,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 221.375) internal successors, (3542), 16 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:20:35,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:20:35,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:20:35,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 21:20:35,494 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,SelfDestructingSolverStorable15 [2023-01-27 21:20:35,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:20:35,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:20:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash 540964307, now seen corresponding path program 1 times [2023-01-27 21:20:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:20:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312870976] [2023-01-27 21:20:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:20:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:20:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:20:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:20:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:20:37,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312870976] [2023-01-27 21:20:37,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312870976] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:20:37,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509222247] [2023-01-27 21:20:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:20:37,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:20:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:20:37,293 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) [2023-01-27 21:20:37,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 21:20:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:20:37,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 21:20:37,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:20:37,610 INFO L321 Elim1Store]: treesize reduction 143, result has 22.7 percent of original size [2023-01-27 21:20:37,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 66 [2023-01-27 21:20:37,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 21:20:37,896 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-01-27 21:20:37,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 51 [2023-01-27 21:20:38,079 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-01-27 21:20:38,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 51 [2023-01-27 21:20:38,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:20:38,257 INFO L321 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2023-01-27 21:20:38,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-01-27 21:20:38,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:20:38,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:20:38,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:20:38,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:20:38,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:20:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:20:39,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:22:34,270 WARN L222 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 153 DAG size of output: 113 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:22:48,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:22:48,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 68 [2023-01-27 21:22:48,764 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 21:22:48,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51318 treesize of output 50809 [2023-01-27 21:22:49,134 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:49,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 783 treesize of output 687 [2023-01-27 21:22:49,161 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:49,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 687 treesize of output 639 [2023-01-27 21:22:49,189 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:49,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 639 treesize of output 615 [2023-01-27 21:22:49,217 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:49,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 615 treesize of output 603 [2023-01-27 21:22:49,245 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:49,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 603 treesize of output 411 [2023-01-27 21:22:49,279 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:22:49,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 794 treesize of output 410 [2023-01-27 21:22:50,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:22:50,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 69 [2023-01-27 21:22:50,197 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-01-27 21:22:50,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 213494 treesize of output 211323 [2023-01-27 21:22:50,650 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-01-27 21:22:50,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1641 treesize of output 1537 [2023-01-27 21:22:50,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:50,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 762 treesize of output 749 [2023-01-27 21:22:50,728 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-01-27 21:22:50,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1524 treesize of output 1108 [2023-01-27 21:22:50,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:22:50,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 541 treesize of output 515 [2023-01-27 21:22:50,795 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-01-27 21:22:50,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1082 treesize of output 874 [2023-01-27 21:22:50,831 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-01-27 21:22:50,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 462 treesize of output 410 [2023-01-27 21:22:51,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:22:51,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 69 [2023-01-27 21:22:52,601 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-27 21:22:52,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7164005449718 treesize of output 7090991005702 [2023-01-27 21:24:54,007 WARN L222 SmtUtils]: Spent 2.02m on a formula simplification. DAG size of input: 18160 DAG size of output: 590 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 21:24:54,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:24:54,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105654 treesize of output 99015 [2023-01-27 21:24:55,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:24:55,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98998 treesize of output 97351 [2023-01-27 21:24:57,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:24:57,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97334 treesize of output 96519 [2023-01-27 21:24:58,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:24:58,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96502 treesize of output 69895 [2023-01-27 21:25:00,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:25:00,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69878 treesize of output 56583 [2023-01-27 21:25:02,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:25:02,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56566 treesize of output 53255 [2023-01-27 21:25:03,637 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-27 21:25:52,469 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:25:52,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 68 [2023-01-27 21:25:52,501 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 21:25:52,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102646 treesize of output 101625 [2023-01-27 21:25:52,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:25:52,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 783 treesize of output 687 [2023-01-27 21:25:52,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:25:52,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 687 treesize of output 639 [2023-01-27 21:25:52,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:25:52,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 639 treesize of output 447 [2023-01-27 21:25:52,934 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:25:52,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 447 treesize of output 435 [2023-01-27 21:25:52,962 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:25:52,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 435 treesize of output 411 [2023-01-27 21:25:52,995 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:25:52,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 794 treesize of output 410 [2023-01-27 21:25:53,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:25:53,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 69 [2023-01-27 21:25:55,454 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-27 21:25:55,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7164005449718 treesize of output 7090991005702 [2023-01-27 21:27:57,693 WARN L222 SmtUtils]: Spent 2.04m on a formula simplification. DAG size of input: 47694 DAG size of output: 603 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 21:27:57,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:27:57,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105654 treesize of output 102343 [2023-01-27 21:27:59,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:27:59,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102326 treesize of output 101511 [2023-01-27 21:28:00,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:28:00,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101494 treesize of output 99847 [2023-01-27 21:28:02,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:28:02,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99830 treesize of output 86535 [2023-01-27 21:28:03,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:28:03,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86518 treesize of output 59911 [2023-01-27 21:28:05,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:28:05,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59894 treesize of output 53255 [2023-01-27 21:28:06,495 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. Received shutdown request... [2023-01-27 21:28:06,820 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 21:28:06,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 21:28:06,843 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 [2023-01-27 21:28:06,844 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:28:07,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 21:28:07,027 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-01-27 21:28:07,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 21:28:07,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 21:28:07,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 21:28:07,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 21:28:07,029 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:28:07,032 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:28:07,032 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:28:07,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:28:07 BasicIcfg [2023-01-27 21:28:07,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:28:07,035 INFO L158 Benchmark]: Toolchain (without parser) took 811642.95ms. Allocated memory was 346.0MB in the beginning and 9.2GB in the end (delta: 8.9GB). Free memory was 288.2MB in the beginning and 6.3GB in the end (delta: -6.0GB). Peak memory consumption was 8.1GB. Max. memory is 16.0GB. [2023-01-27 21:28:07,035 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 346.0MB. Free memory is still 296.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:28:07,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.83ms. Allocated memory is still 346.0MB. Free memory was 287.9MB in the beginning and 274.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 21:28:07,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.60ms. Allocated memory is still 346.0MB. Free memory was 274.2MB in the beginning and 271.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:28:07,036 INFO L158 Benchmark]: Boogie Preprocessor took 50.22ms. Allocated memory is still 346.0MB. Free memory was 271.0MB in the beginning and 268.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 21:28:07,036 INFO L158 Benchmark]: RCFGBuilder took 945.86ms. Allocated memory was 346.0MB in the beginning and 503.3MB in the end (delta: 157.3MB). Free memory was 268.3MB in the beginning and 410.6MB in the end (delta: -142.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 21:28:07,036 INFO L158 Benchmark]: TraceAbstraction took 810308.57ms. Allocated memory was 503.3MB in the beginning and 9.2GB in the end (delta: 8.7GB). Free memory was 409.8MB in the beginning and 6.3GB in the end (delta: -5.9GB). Peak memory consumption was 8.1GB. Max. memory is 16.0GB. [2023-01-27 21:28:07,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 346.0MB. Free memory is still 296.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 284.83ms. Allocated memory is still 346.0MB. Free memory was 287.9MB in the beginning and 274.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.60ms. Allocated memory is still 346.0MB. Free memory was 274.2MB in the beginning and 271.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.22ms. Allocated memory is still 346.0MB. Free memory was 271.0MB in the beginning and 268.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 945.86ms. Allocated memory was 346.0MB in the beginning and 503.3MB in the end (delta: 157.3MB). Free memory was 268.3MB in the beginning and 410.6MB in the end (delta: -142.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 810308.57ms. Allocated memory was 503.3MB in the beginning and 9.2GB in the end (delta: 8.7GB). Free memory was 409.8MB in the beginning and 6.3GB in the end (delta: -5.9GB). Peak memory consumption was 8.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4s, 309 PlacesBefore, 38 PlacesAfterwards, 333 TransitionsBefore, 33 TransitionsAfterwards, 5712 CoEnabledTransitionPairs, 8 FixpointIterations, 208 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 43 TrivialYvCompositions, 14 ConcurrentYvCompositions, 29 ChoiceCompositions, 366 TotalNumberOfCompositions, 5673 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5484, independent: 5460, independent conditional: 0, independent unconditional: 5460, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3004, independent: 2991, independent conditional: 0, independent unconditional: 2991, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5484, independent: 2469, independent conditional: 0, independent unconditional: 2469, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 3004, unknown conditional: 0, unknown unconditional: 3004] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 369 locations, 5 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: 810.2s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 139.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.6s, HoareTripleCheckerStatistics: 292 mSolverCounterUnknown, 5902 SdHoareTripleChecker+Valid, 44.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5902 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 43.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 763 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 376 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5884 IncrementalHoareTripleChecker+Invalid, 7315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 376 mSolverCounterUnsat, 0 mSDtfsCounter, 5884 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 463 SyntacticMatches, 9 SemanticMatches, 298 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 56.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7357occurred in iteration=15, InterpolantAutomatonStates: 228, 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: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 200.6s InterpolantComputationTime, 742 NumberOfCodeBlocks, 742 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 971 ConstructedInterpolants, 53 QuantifiedInterpolants, 23786 SizeOfPredicates, 375 NumberOfNonLiveVariables, 4106 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 91/158 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