/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:17:08,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:17:08,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:17:08,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:17:08,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:17:08,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:17:08,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:17:08,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:17:08,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:17:08,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:17:08,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:17:08,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:17:08,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:17:08,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:17:08,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:17:08,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:17:08,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:17:08,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:17:08,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:17:08,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:17:08,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:17:08,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:17:08,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:17:08,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:17:08,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:17:08,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:17:08,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:17:08,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:17:08,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:17:08,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 12:17:08,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:17:08,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:17:08,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:17:08,751 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 [2023-01-28 12:17:08,779 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:17:08,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:17:08,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:17:08,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:17:08,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:17:08,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:17:08,781 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:17:08,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:17:08,781 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:17:08,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:17:08,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:17:08,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:17:08,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:17:08,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:17:08,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:17:08,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:17:08,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:17:08,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:17:08,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:17:08,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:17:08,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:17:08,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:17:08,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:17:08,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:17:08,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:17:08,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:17:08,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:17:08,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:17:08,977 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:17:08,980 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:17:08,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-01-28 12:17:10,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:17:10,284 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:17:10,284 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-01-28 12:17:10,294 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa45ce86b/3d4fc1893ff8492e839337b06f7e1d44/FLAG0fde5d801 [2023-01-28 12:17:10,306 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa45ce86b/3d4fc1893ff8492e839337b06f7e1d44 [2023-01-28 12:17:10,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:17:10,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:17:10,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:17:10,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:17:10,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:17:10,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fafb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10, skipping insertion in model container [2023-01-28 12:17:10,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:17:10,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:17:10,665 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-01-28 12:17:10,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:17:10,689 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:17:10,738 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-01-28 12:17:10,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:17:10,786 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:17:10,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10 WrapperNode [2023-01-28 12:17:10,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:17:10,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:17:10,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:17:10,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:17:10,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,838 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-01-28 12:17:10,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:17:10,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:17:10,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:17:10,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:17:10,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:17:10,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:17:10,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:17:10,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:17:10,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (1/1) ... [2023-01-28 12:17:10,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:17:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:10,921 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) [2023-01-28 12:17:10,924 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 [2023-01-28 12:17:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:17:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:17:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:17:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:17:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:17:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:17:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:17:10,955 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 12:17:11,103 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:17:11,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:17:11,372 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:17:11,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:17:11,379 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 12:17:11,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:17:11 BoogieIcfgContainer [2023-01-28 12:17:11,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:17:11,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:17:11,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:17:11,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:17:11,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:17:10" (1/3) ... [2023-01-28 12:17:11,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a2c6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:17:11, skipping insertion in model container [2023-01-28 12:17:11,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:10" (2/3) ... [2023-01-28 12:17:11,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a2c6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:17:11, skipping insertion in model container [2023-01-28 12:17:11,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:17:11" (3/3) ... [2023-01-28 12:17:11,391 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-01-28 12:17:11,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:17:11,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:17:11,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:17:11,502 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:17:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2023-01-28 12:17:11,618 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-28 12:17:11,618 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:11,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2023-01-28 12:17:11,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2023-01-28 12:17:11,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:11,633 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:17:11,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:11,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:11,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:11,702 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-01-28 12:17:11,703 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:11,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 8/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-01-28 12:17:11,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2023-01-28 12:17:16,418 INFO L134 LiptonReduction]: Checked pairs total: 4363 [2023-01-28 12:17:16,418 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-01-28 12:17:16,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:17:16,435 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;@569952ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:17:16,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:17:16,441 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2023-01-28 12:17:16,442 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:16,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:16,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:16,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:16,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash -373663314, now seen corresponding path program 1 times [2023-01-28 12:17:16,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:16,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058453098] [2023-01-28 12:17:16,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:16,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058453098] [2023-01-28 12:17:16,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058453098] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:16,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:16,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415461951] [2023-01-28 12:17:16,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:16,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-28 12:17:16,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:16,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:16,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-28 12:17:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:16,912 INFO L130 PetriNetUnfolder]: 219/470 cut-off events. [2023-01-28 12:17:16,912 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 12:17:16,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 470 events. 219/470 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2196 event pairs, 87 based on Foata normal form. 28/432 useless extension candidates. Maximal degree in co-relation 772. Up to 225 conditions per place. [2023-01-28 12:17:16,917 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 34 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 12:17:16,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 173 flow [2023-01-28 12:17:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-01-28 12:17:16,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-01-28 12:17:16,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-01-28 12:17:16,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-01-28 12:17:16,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:16,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-01-28 12:17:16,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:16,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:16,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:16,946 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-01-28 12:17:16,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 173 flow [2023-01-28 12:17:16,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:17:16,950 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2023-01-28 12:17:16,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-01-28 12:17:16,962 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-01-28 12:17:16,962 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2023-01-28 12:17:16,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:16,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:16,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:16,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:17:16,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:16,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2115918277, now seen corresponding path program 1 times [2023-01-28 12:17:16,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:16,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143622271] [2023-01-28 12:17:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:16,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:17,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143622271] [2023-01-28 12:17:17,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143622271] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:17,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:17,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374199777] [2023-01-28 12:17:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:17,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:17,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:17,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:17,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:17,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 224 [2023-01-28 12:17:17,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:17,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 224 [2023-01-28 12:17:17,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:17,243 INFO L130 PetriNetUnfolder]: 357/694 cut-off events. [2023-01-28 12:17:17,244 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-01-28 12:17:17,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 694 events. 357/694 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3192 event pairs, 141 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 442. Up to 347 conditions per place. [2023-01-28 12:17:17,249 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-01-28 12:17:17,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 191 flow [2023-01-28 12:17:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-01-28 12:17:17,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-01-28 12:17:17,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-01-28 12:17:17,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-01-28 12:17:17,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:17,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-01-28 12:17:17,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,260 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 376 transitions. [2023-01-28 12:17:17,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 191 flow [2023-01-28 12:17:17,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:17,262 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2023-01-28 12:17:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-01-28 12:17:17,262 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-01-28 12:17:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2023-01-28 12:17:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:17,263 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] [2023-01-28 12:17:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:17:17,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:17,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash 26892520, now seen corresponding path program 1 times [2023-01-28 12:17:17,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:17,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149197145] [2023-01-28 12:17:17,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:17,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149197145] [2023-01-28 12:17:17,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149197145] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:17,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:17,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:17,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203782318] [2023-01-28 12:17:17,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:17,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:17,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:17,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:17,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 224 [2023-01-28 12:17:17,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:17,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 224 [2023-01-28 12:17:17,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:17,562 INFO L130 PetriNetUnfolder]: 309/688 cut-off events. [2023-01-28 12:17:17,562 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 12:17:17,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 688 events. 309/688 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3367 event pairs, 105 based on Foata normal form. 80/740 useless extension candidates. Maximal degree in co-relation 413. Up to 316 conditions per place. [2023-01-28 12:17:17,567 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 25 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-01-28 12:17:17,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 183 flow [2023-01-28 12:17:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-01-28 12:17:17,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2023-01-28 12:17:17,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-01-28 12:17:17,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-01-28 12:17:17,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:17,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-01-28 12:17:17,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,573 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 3 states and 346 transitions. [2023-01-28 12:17:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 183 flow [2023-01-28 12:17:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:17,576 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 102 flow [2023-01-28 12:17:17,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-01-28 12:17:17,577 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-28 12:17:17,577 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 102 flow [2023-01-28 12:17:17,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:17,578 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] [2023-01-28 12:17:17,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:17:17,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:17,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1826989588, now seen corresponding path program 2 times [2023-01-28 12:17:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:17,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31953999] [2023-01-28 12:17:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:17,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31953999] [2023-01-28 12:17:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31953999] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271895462] [2023-01-28 12:17:17,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:17:17,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:17,697 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) [2023-01-28 12:17:17,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:17:17,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:17:17,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 12:17:17,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:17,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271895462] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:17,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-01-28 12:17:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040090377] [2023-01-28 12:17:17,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 12:17:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 12:17:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 12:17:17,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-01-28 12:17:17,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 102 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:17,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:17,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-01-28 12:17:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:18,277 INFO L130 PetriNetUnfolder]: 631/1544 cut-off events. [2023-01-28 12:17:18,278 INFO L131 PetriNetUnfolder]: For 432/438 co-relation queries the response was YES. [2023-01-28 12:17:18,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1544 events. 631/1544 cut-off events. For 432/438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8646 event pairs, 42 based on Foata normal form. 134/1608 useless extension candidates. Maximal degree in co-relation 843. Up to 306 conditions per place. [2023-01-28 12:17:18,286 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 141 selfloop transitions, 33 changer transitions 0/181 dead transitions. [2023-01-28 12:17:18,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 181 transitions, 978 flow [2023-01-28 12:17:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 12:17:18,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 12:17:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1900 transitions. [2023-01-28 12:17:18,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301339285714286 [2023-01-28 12:17:18,291 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1900 transitions. [2023-01-28 12:17:18,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1900 transitions. [2023-01-28 12:17:18,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:18,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1900 transitions. [2023-01-28 12:17:18,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.75) internal successors, (1900), 16 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:18,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 224.0) internal successors, (3808), 17 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:18,303 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 224.0) internal successors, (3808), 17 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:18,303 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 102 flow. Second operand 16 states and 1900 transitions. [2023-01-28 12:17:18,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 181 transitions, 978 flow [2023-01-28 12:17:18,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 181 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:18,308 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 388 flow [2023-01-28 12:17:18,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=388, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-01-28 12:17:18,309 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-01-28 12:17:18,309 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 388 flow [2023-01-28 12:17:18,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:18,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:18,310 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:18,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:18,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:18,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:18,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash 734167052, now seen corresponding path program 3 times [2023-01-28 12:17:18,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:18,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046912743] [2023-01-28 12:17:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:18,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-01-28 12:17:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046912743] [2023-01-28 12:17:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046912743] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279066176] [2023-01-28 12:17:18,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:17:18,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:18,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:18,622 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) [2023-01-28 12:17:18,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:17:18,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 12:17:18,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:18,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 12:17:18,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-01-28 12:17:18,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279066176] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:18,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:17:18,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 12:17:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779245103] [2023-01-28 12:17:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:17:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:17:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 12:17:18,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-01-28 12:17:18,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:18,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:18,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-01-28 12:17:18,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:19,101 INFO L130 PetriNetUnfolder]: 1067/2182 cut-off events. [2023-01-28 12:17:19,101 INFO L131 PetriNetUnfolder]: For 5397/5397 co-relation queries the response was YES. [2023-01-28 12:17:19,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 2182 events. 1067/2182 cut-off events. For 5397/5397 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11406 event pairs, 219 based on Foata normal form. 0/2018 useless extension candidates. Maximal degree in co-relation 4998. Up to 878 conditions per place. [2023-01-28 12:17:19,115 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 100 selfloop transitions, 8 changer transitions 1/111 dead transitions. [2023-01-28 12:17:19,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 908 flow [2023-01-28 12:17:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:17:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:17:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-01-28 12:17:19,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491071428571429 [2023-01-28 12:17:19,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-01-28 12:17:19,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-01-28 12:17:19,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:19,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-01-28 12:17:19,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,121 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 388 flow. Second operand 5 states and 615 transitions. [2023-01-28 12:17:19,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 908 flow [2023-01-28 12:17:19,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 841 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:19,138 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 398 flow [2023-01-28 12:17:19,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-01-28 12:17:19,140 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-01-28 12:17:19,140 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 398 flow [2023-01-28 12:17:19,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:19,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:19,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:19,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:19,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:19,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1347316854, now seen corresponding path program 4 times [2023-01-28 12:17:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015214249] [2023-01-28 12:17:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-28 12:17:19,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:19,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015214249] [2023-01-28 12:17:19,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015214249] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:19,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603578624] [2023-01-28 12:17:19,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:17:19,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:19,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:19,455 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) [2023-01-28 12:17:19,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 12:17:19,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:17:19,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:19,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 12:17:19,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-28 12:17:19,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-28 12:17:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603578624] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:19,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-01-28 12:17:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77597370] [2023-01-28 12:17:19,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:19,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 12:17:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 12:17:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 12:17:19,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-28 12:17:19,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:19,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-28 12:17:19,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:19,966 INFO L130 PetriNetUnfolder]: 1019/2398 cut-off events. [2023-01-28 12:17:19,966 INFO L131 PetriNetUnfolder]: For 7109/7133 co-relation queries the response was YES. [2023-01-28 12:17:19,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 2398 events. 1019/2398 cut-off events. For 7109/7133 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14058 event pairs, 168 based on Foata normal form. 118/2506 useless extension candidates. Maximal degree in co-relation 6062. Up to 436 conditions per place. [2023-01-28 12:17:19,985 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 95 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2023-01-28 12:17:19,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 123 transitions, 976 flow [2023-01-28 12:17:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:17:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:17:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 761 transitions. [2023-01-28 12:17:19,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5662202380952381 [2023-01-28 12:17:19,987 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 761 transitions. [2023-01-28 12:17:19,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 761 transitions. [2023-01-28 12:17:19,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:19,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 761 transitions. [2023-01-28 12:17:19,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,992 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:19,992 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 398 flow. Second operand 6 states and 761 transitions. [2023-01-28 12:17:19,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 123 transitions, 976 flow [2023-01-28 12:17:20,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 976 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 12:17:20,003 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 469 flow [2023-01-28 12:17:20,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2023-01-28 12:17:20,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2023-01-28 12:17:20,004 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 469 flow [2023-01-28 12:17:20,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:20,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:20,005 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:20,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:20,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:20,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:20,212 INFO L85 PathProgramCache]: Analyzing trace with hash 804205986, now seen corresponding path program 5 times [2023-01-28 12:17:20,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:20,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752596305] [2023-01-28 12:17:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-01-28 12:17:20,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752596305] [2023-01-28 12:17:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752596305] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:20,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:20,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:17:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574732125] [2023-01-28 12:17:20,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:20,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 224 [2023-01-28 12:17:20,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:20,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:20,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 224 [2023-01-28 12:17:20,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:20,489 INFO L130 PetriNetUnfolder]: 891/1924 cut-off events. [2023-01-28 12:17:20,489 INFO L131 PetriNetUnfolder]: For 6881/6881 co-relation queries the response was YES. [2023-01-28 12:17:20,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1924 events. 891/1924 cut-off events. For 6881/6881 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9911 event pairs, 261 based on Foata normal form. 80/2004 useless extension candidates. Maximal degree in co-relation 5828. Up to 1423 conditions per place. [2023-01-28 12:17:20,504 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 58 selfloop transitions, 3 changer transitions 3/66 dead transitions. [2023-01-28 12:17:20,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 550 flow [2023-01-28 12:17:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-01-28 12:17:20,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610119047619048 [2023-01-28 12:17:20,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-01-28 12:17:20,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-01-28 12:17:20,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:20,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-01-28 12:17:20,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:20,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:20,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:20,509 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 469 flow. Second operand 3 states and 377 transitions. [2023-01-28 12:17:20,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 550 flow [2023-01-28 12:17:20,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 522 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-01-28 12:17:20,520 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 336 flow [2023-01-28 12:17:20,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2023-01-28 12:17:20,520 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-01-28 12:17:20,521 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 336 flow [2023-01-28 12:17:20,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:20,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:20,521 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:20,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:17:20,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:20,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1105729770, now seen corresponding path program 6 times [2023-01-28 12:17:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691272885] [2023-01-28 12:17:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-01-28 12:17:20,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:20,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691272885] [2023-01-28 12:17:20,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691272885] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:20,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122535603] [2023-01-28 12:17:20,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:17:20,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:20,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:20,740 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) [2023-01-28 12:17:20,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 12:17:20,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 12:17:20,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:20,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 12:17:20,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-01-28 12:17:21,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122535603] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:17:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-01-28 12:17:21,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445315563] [2023-01-28 12:17:21,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 12:17:21,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:21,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 12:17:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 12:17:21,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 12:17:21,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:21,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:21,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 12:17:21,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:21,280 INFO L130 PetriNetUnfolder]: 709/1544 cut-off events. [2023-01-28 12:17:21,281 INFO L131 PetriNetUnfolder]: For 3668/3668 co-relation queries the response was YES. [2023-01-28 12:17:21,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 1544 events. 709/1544 cut-off events. For 3668/3668 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7322 event pairs, 185 based on Foata normal form. 34/1578 useless extension candidates. Maximal degree in co-relation 3165. Up to 668 conditions per place. [2023-01-28 12:17:21,291 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 69 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2023-01-28 12:17:21,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 652 flow [2023-01-28 12:17:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:17:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:17:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-01-28 12:17:21,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2023-01-28 12:17:21,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-01-28 12:17:21,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-01-28 12:17:21,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:21,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-01-28 12:17:21,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:21,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:21,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:21,301 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 336 flow. Second operand 6 states and 708 transitions. [2023-01-28 12:17:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 652 flow [2023-01-28 12:17:21,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 646 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:21,309 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 380 flow [2023-01-28 12:17:21,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=380, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-01-28 12:17:21,310 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2023-01-28 12:17:21,310 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 380 flow [2023-01-28 12:17:21,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:21,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:21,311 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:21,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:21,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:21,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1529417168, now seen corresponding path program 7 times [2023-01-28 12:17:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227196108] [2023-01-28 12:17:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-01-28 12:17:21,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:21,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227196108] [2023-01-28 12:17:21,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227196108] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:21,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342423957] [2023-01-28 12:17:21,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:17:21,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:21,833 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) [2023-01-28 12:17:21,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 12:17:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:21,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 12:17:21,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 12:17:22,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 12:17:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342423957] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:22,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:22,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 9 [2023-01-28 12:17:22,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098257443] [2023-01-28 12:17:22,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:22,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 12:17:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 12:17:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-28 12:17:22,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 12:17:22,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:22,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:22,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 12:17:22,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:22,386 INFO L130 PetriNetUnfolder]: 375/832 cut-off events. [2023-01-28 12:17:22,386 INFO L131 PetriNetUnfolder]: For 2487/2487 co-relation queries the response was YES. [2023-01-28 12:17:22,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 832 events. 375/832 cut-off events. For 2487/2487 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2946 event pairs, 104 based on Foata normal form. 28/860 useless extension candidates. Maximal degree in co-relation 1449. Up to 351 conditions per place. [2023-01-28 12:17:22,392 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 61 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-01-28 12:17:22,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 586 flow [2023-01-28 12:17:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:17:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:17:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 706 transitions. [2023-01-28 12:17:22,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252976190476191 [2023-01-28 12:17:22,395 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 706 transitions. [2023-01-28 12:17:22,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 706 transitions. [2023-01-28 12:17:22,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:22,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 706 transitions. [2023-01-28 12:17:22,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:22,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:22,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:22,399 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 380 flow. Second operand 6 states and 706 transitions. [2023-01-28 12:17:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 586 flow [2023-01-28 12:17:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 530 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-01-28 12:17:22,405 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 283 flow [2023-01-28 12:17:22,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-01-28 12:17:22,405 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2023-01-28 12:17:22,405 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 283 flow [2023-01-28 12:17:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:22,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:22,406 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:22,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:22,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:22,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:22,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1103703702, now seen corresponding path program 8 times [2023-01-28 12:17:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:22,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58767780] [2023-01-28 12:17:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:23,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:23,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58767780] [2023-01-28 12:17:23,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58767780] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88488180] [2023-01-28 12:17:23,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:17:23,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:23,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:23,069 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) [2023-01-28 12:17:23,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 12:17:23,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:17:23,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:23,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 12:17:23,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:23,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:26,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88488180] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:26,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:26,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-01-28 12:17:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125196773] [2023-01-28 12:17:26,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:26,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 12:17:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 12:17:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-01-28 12:17:26,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 12:17:26,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 283 flow. Second operand has 31 states, 31 states have (on average 112.54838709677419) internal successors, (3489), 31 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:26,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:26,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 12:17:26,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:27,047 INFO L130 PetriNetUnfolder]: 255/668 cut-off events. [2023-01-28 12:17:27,047 INFO L131 PetriNetUnfolder]: For 1337/1343 co-relation queries the response was YES. [2023-01-28 12:17:27,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 668 events. 255/668 cut-off events. For 1337/1343 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2409 event pairs, 23 based on Foata normal form. 22/688 useless extension candidates. Maximal degree in co-relation 1184. Up to 118 conditions per place. [2023-01-28 12:17:27,051 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2023-01-28 12:17:27,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 742 flow [2023-01-28 12:17:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 12:17:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 12:17:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1389 transitions. [2023-01-28 12:17:27,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167410714285714 [2023-01-28 12:17:27,055 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1389 transitions. [2023-01-28 12:17:27,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1389 transitions. [2023-01-28 12:17:27,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:27,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1389 transitions. [2023-01-28 12:17:27,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.75) internal successors, (1389), 12 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:27,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:27,063 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:27,063 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 283 flow. Second operand 12 states and 1389 transitions. [2023-01-28 12:17:27,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 742 flow [2023-01-28 12:17:27,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 700 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-01-28 12:17:27,067 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-01-28 12:17:27,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-01-28 12:17:27,069 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-01-28 12:17:27,069 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-01-28 12:17:27,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.54838709677419) internal successors, (3489), 31 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:27,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:17:27,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:17:27,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:17:27,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:27,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:27,281 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-01-28 12:17:27,283 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:17:27,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:17:27,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:17:27 BasicIcfg [2023-01-28 12:17:27,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:17:27,286 INFO L158 Benchmark]: Toolchain (without parser) took 16977.41ms. Allocated memory was 377.5MB in the beginning and 666.9MB in the end (delta: 289.4MB). Free memory was 325.3MB in the beginning and 252.6MB in the end (delta: 72.7MB). Peak memory consumption was 362.5MB. Max. memory is 16.0GB. [2023-01-28 12:17:27,286 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory is still 324.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:17:27,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.39ms. Allocated memory is still 377.5MB. Free memory was 325.3MB in the beginning and 298.8MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 12:17:27,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 377.5MB. Free memory was 298.8MB in the beginning and 296.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:17:27,287 INFO L158 Benchmark]: Boogie Preprocessor took 45.57ms. Allocated memory is still 377.5MB. Free memory was 296.7MB in the beginning and 295.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:17:27,287 INFO L158 Benchmark]: RCFGBuilder took 495.43ms. Allocated memory was 377.5MB in the beginning and 555.7MB in the end (delta: 178.3MB). Free memory was 295.0MB in the beginning and 516.4MB in the end (delta: -221.4MB). Peak memory consumption was 25.9MB. Max. memory is 16.0GB. [2023-01-28 12:17:27,288 INFO L158 Benchmark]: TraceAbstraction took 15903.29ms. Allocated memory was 555.7MB in the beginning and 666.9MB in the end (delta: 111.1MB). Free memory was 515.8MB in the beginning and 252.6MB in the end (delta: 263.2MB). Peak memory consumption was 374.3MB. Max. memory is 16.0GB. [2023-01-28 12:17:27,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory is still 324.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 477.39ms. Allocated memory is still 377.5MB. Free memory was 325.3MB in the beginning and 298.8MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 377.5MB. Free memory was 298.8MB in the beginning and 296.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.57ms. Allocated memory is still 377.5MB. Free memory was 296.7MB in the beginning and 295.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 495.43ms. Allocated memory was 377.5MB in the beginning and 555.7MB in the end (delta: 178.3MB). Free memory was 295.0MB in the beginning and 516.4MB in the end (delta: -221.4MB). Peak memory consumption was 25.9MB. Max. memory is 16.0GB. * TraceAbstraction took 15903.29ms. Allocated memory was 555.7MB in the beginning and 666.9MB in the end (delta: 111.1MB). Free memory was 515.8MB in the beginning and 252.6MB in the end (delta: 263.2MB). Peak memory consumption was 374.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 117 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 30 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2172, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1031, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2172, independent: 1000, independent conditional: 0, independent unconditional: 1000, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1031, unknown conditional: 0, unknown unconditional: 1031] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.7s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2404 IncrementalHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 2 mSDtfsCounter, 2404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 513 GetRequests, 411 SyntacticMatches, 22 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=469occurred in iteration=6, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 643 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 795 ConstructedInterpolants, 42 QuantifiedInterpolants, 5051 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1813 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 532/826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 12:17:27,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...