/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-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:02:44,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:02:44,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:02:44,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 07:02:44,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:02:44,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:02:44,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:02:44,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:02:44,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:02:44,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:02:44,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:02:44,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:02:44,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:02:44,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:02:44,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:02:44,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:02:44,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:02:44,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:02:44,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:02:44,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:02:44,492 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 07:02:44,526 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:02:44,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:02:44,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:02:44,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:02:44,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:02:44,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:02:44,528 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:02:44,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:02:44,529 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:02:44,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:02:44,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:02:44,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:02:44,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:02:44,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:02:44,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:02:44,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:02:44,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:44,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:02:44,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:02:44,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:02:44,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:02:44,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:02:44,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:02:44,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:02:44,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:02:44,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:02:44,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:02:44,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:02:44,779 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:02:44,779 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:02:44,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:02:45,906 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:02:46,116 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:02:46,116 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:02:46,128 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5b9dde9/0f30c08d17254a3288866fd5449d728f/FLAG3609f798b [2023-01-28 07:02:46,150 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5b9dde9/0f30c08d17254a3288866fd5449d728f [2023-01-28 07:02:46,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:02:46,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:02:46,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:46,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:02:46,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:02:46,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f85ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46, skipping insertion in model container [2023-01-28 07:02:46,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:02:46,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:02:46,396 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-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:02:46,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:46,559 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:02:46,574 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-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:02:46,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:46,626 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:46,626 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:46,632 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:02:46,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46 WrapperNode [2023-01-28 07:02:46,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:46,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:46,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:02:46,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:02:46,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,677 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 07:02:46,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:46,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:02:46,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:02:46,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:02:46,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,707 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:02:46,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:02:46,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:02:46,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:02:46,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (1/1) ... [2023-01-28 07:02:46,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:02:46,758 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 07:02:46,766 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 07:02:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:02:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:02:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:02:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:02:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:02:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:02:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:02:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:02:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:02:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:02:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:02:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:02:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:02:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:02:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:02:46,791 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 07:02:46,974 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:02:46,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:02:47,158 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:02:47,163 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:02:47,163 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:02:47,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:47 BoogieIcfgContainer [2023-01-28 07:02:47,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:02:47,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:02:47,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:02:47,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:02:47,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:02:46" (1/3) ... [2023-01-28 07:02:47,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbcb0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:47, skipping insertion in model container [2023-01-28 07:02:47,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:46" (2/3) ... [2023-01-28 07:02:47,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbcb0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:47, skipping insertion in model container [2023-01-28 07:02:47,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:47" (3/3) ... [2023-01-28 07:02:47,172 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:02:47,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:02:47,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:02:47,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:02:47,234 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:02:47,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-01-28 07:02:47,299 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2023-01-28 07:02:47,299 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:47,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-28 07:02:47,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-01-28 07:02:47,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-01-28 07:02:47,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:02:47,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-01-28 07:02:47,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-01-28 07:02:47,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-01-28 07:02:47,359 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-01-28 07:02:47,359 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:47,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-01-28 07:02:47,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-01-28 07:02:49,107 INFO L134 LiptonReduction]: Checked pairs total: 1625 [2023-01-28 07:02:49,108 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-28 07:02:49,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:02:49,126 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;@3c03309d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:02:49,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:02:49,130 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 07:02:49,130 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:49,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:49,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:49,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:49,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash -303430256, now seen corresponding path program 1 times [2023-01-28 07:02:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933169468] [2023-01-28 07:02:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:49,728 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 07:02:49,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:49,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933169468] [2023-01-28 07:02:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933169468] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:49,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:02:49,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612056766] [2023-01-28 07:02:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:49,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:02:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:49,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:02:49,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:02:49,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-01-28 07:02:49,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 07:02:49,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:49,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-01-28 07:02:49,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:49,918 INFO L130 PetriNetUnfolder]: 354/582 cut-off events. [2023-01-28 07:02:49,918 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 07:02:49,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 582 events. 354/582 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2408 event pairs, 129 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1192. Up to 400 conditions per place. [2023-01-28 07:02:49,928 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-01-28 07:02:49,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 127 flow [2023-01-28 07:02:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:02:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:02:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-01-28 07:02:49,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700483091787439 [2023-01-28 07:02:49,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-01-28 07:02:49,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-01-28 07:02:49,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:49,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-01-28 07:02:49,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 07:02:49,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 07:02:49,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 07:02:49,955 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 236 transitions. [2023-01-28 07:02:49,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 127 flow [2023-01-28 07:02:49,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:02:49,959 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2023-01-28 07:02:49,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-01-28 07:02:49,964 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-28 07:02:49,964 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2023-01-28 07:02:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 07:02:49,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:49,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:49,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:02:49,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:49,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -816403933, now seen corresponding path program 1 times [2023-01-28 07:02:49,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:49,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530025410] [2023-01-28 07:02:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:49,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:50,186 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 07:02:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530025410] [2023-01-28 07:02:50,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530025410] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:50,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899166430] [2023-01-28 07:02:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:50,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:50,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-01-28 07:02:50,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 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 07:02:50,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:50,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-01-28 07:02:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:50,300 INFO L130 PetriNetUnfolder]: 333/552 cut-off events. [2023-01-28 07:02:50,301 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-01-28 07:02:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 552 events. 333/552 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2073 event pairs, 81 based on Foata normal form. 9/561 useless extension candidates. Maximal degree in co-relation 1378. Up to 271 conditions per place. [2023-01-28 07:02:50,304 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-28 07:02:50,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 154 flow [2023-01-28 07:02:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-01-28 07:02:50,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2023-01-28 07:02:50,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-01-28 07:02:50,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-01-28 07:02:50,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:50,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-01-28 07:02:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 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 07:02:50,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 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 07:02:50,315 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 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 07:02:50,316 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 306 transitions. [2023-01-28 07:02:50,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 154 flow [2023-01-28 07:02:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:02:50,320 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 88 flow [2023-01-28 07:02:50,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-01-28 07:02:50,322 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-01-28 07:02:50,322 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 88 flow [2023-01-28 07:02:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 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 07:02:50,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:50,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:50,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:02:50,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:50,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -816404584, now seen corresponding path program 1 times [2023-01-28 07:02:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952780759] [2023-01-28 07:02:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:50,478 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 07:02:50,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952780759] [2023-01-28 07:02:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952780759] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:50,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:50,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133298783] [2023-01-28 07:02:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:50,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:50,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-01-28 07:02:50,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 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 07:02:50,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:50,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-01-28 07:02:50,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:50,568 INFO L130 PetriNetUnfolder]: 318/528 cut-off events. [2023-01-28 07:02:50,569 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2023-01-28 07:02:50,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 528 events. 318/528 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2044 event pairs, 43 based on Foata normal form. 3/531 useless extension candidates. Maximal degree in co-relation 1441. Up to 343 conditions per place. [2023-01-28 07:02:50,574 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-01-28 07:02:50,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 189 flow [2023-01-28 07:02:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-01-28 07:02:50,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2023-01-28 07:02:50,576 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-01-28 07:02:50,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-01-28 07:02:50,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:50,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-01-28 07:02:50,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 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 07:02:50,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 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 07:02:50,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 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 07:02:50,579 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 88 flow. Second operand 4 states and 309 transitions. [2023-01-28 07:02:50,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 189 flow [2023-01-28 07:02:50,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:50,583 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 105 flow [2023-01-28 07:02:50,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-01-28 07:02:50,584 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-28 07:02:50,587 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 105 flow [2023-01-28 07:02:50,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 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 07:02:50,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:50,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:50,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:02:50,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:50,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash 461280613, now seen corresponding path program 1 times [2023-01-28 07:02:50,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:50,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88132074] [2023-01-28 07:02:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:50,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:50,751 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 07:02:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:50,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88132074] [2023-01-28 07:02:50,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88132074] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:50,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:50,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510377489] [2023-01-28 07:02:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:50,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:50,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:50,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 138 [2023-01-28 07:02:50,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 07:02:50,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:50,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 138 [2023-01-28 07:02:50,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:50,858 INFO L130 PetriNetUnfolder]: 359/591 cut-off events. [2023-01-28 07:02:50,858 INFO L131 PetriNetUnfolder]: For 590/590 co-relation queries the response was YES. [2023-01-28 07:02:50,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 591 events. 359/591 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2401 event pairs, 27 based on Foata normal form. 9/600 useless extension candidates. Maximal degree in co-relation 1737. Up to 263 conditions per place. [2023-01-28 07:02:50,864 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 38 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2023-01-28 07:02:50,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 374 flow [2023-01-28 07:02:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-01-28 07:02:50,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565217391304348 [2023-01-28 07:02:50,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-01-28 07:02:50,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-01-28 07:02:50,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:50,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-01-28 07:02:50,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 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 07:02:50,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:50,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:50,873 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 105 flow. Second operand 5 states and 384 transitions. [2023-01-28 07:02:50,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 374 flow [2023-01-28 07:02:50,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:50,878 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 259 flow [2023-01-28 07:02:50,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-01-28 07:02:50,879 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-28 07:02:50,880 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 259 flow [2023-01-28 07:02:50,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 07:02:50,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:50,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:50,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:02:50,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:50,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash 461261083, now seen corresponding path program 2 times [2023-01-28 07:02:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:50,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513195054] [2023-01-28 07:02:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:51,037 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 07:02:51,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:51,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513195054] [2023-01-28 07:02:51,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513195054] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:51,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:51,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:51,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988838162] [2023-01-28 07:02:51,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:51,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:51,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:51,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 138 [2023-01-28 07:02:51,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 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 07:02:51,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:51,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 138 [2023-01-28 07:02:51,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:51,142 INFO L130 PetriNetUnfolder]: 419/704 cut-off events. [2023-01-28 07:02:51,143 INFO L131 PetriNetUnfolder]: For 1410/1410 co-relation queries the response was YES. [2023-01-28 07:02:51,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 704 events. 419/704 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3074 event pairs, 74 based on Foata normal form. 27/731 useless extension candidates. Maximal degree in co-relation 2444. Up to 322 conditions per place. [2023-01-28 07:02:51,147 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 27 selfloop transitions, 9 changer transitions 18/54 dead transitions. [2023-01-28 07:02:51,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 460 flow [2023-01-28 07:02:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-01-28 07:02:51,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2023-01-28 07:02:51,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-01-28 07:02:51,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-01-28 07:02:51,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:51,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-01-28 07:02:51,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:51,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:51,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:51,153 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 259 flow. Second operand 5 states and 375 transitions. [2023-01-28 07:02:51,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 460 flow [2023-01-28 07:02:51,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:51,158 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 185 flow [2023-01-28 07:02:51,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-01-28 07:02:51,160 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-01-28 07:02:51,160 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 185 flow [2023-01-28 07:02:51,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 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 07:02:51,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:51,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:51,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:02:51,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:51,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -417436779, now seen corresponding path program 1 times [2023-01-28 07:02:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:51,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372441896] [2023-01-28 07:02:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:51,280 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 07:02:51,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:51,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372441896] [2023-01-28 07:02:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372441896] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:51,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320896577] [2023-01-28 07:02:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:51,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:51,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-01-28 07:02:51,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 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 07:02:51,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:51,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-01-28 07:02:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:51,356 INFO L130 PetriNetUnfolder]: 155/303 cut-off events. [2023-01-28 07:02:51,356 INFO L131 PetriNetUnfolder]: For 1591/1628 co-relation queries the response was YES. [2023-01-28 07:02:51,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 303 events. 155/303 cut-off events. For 1591/1628 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1326 event pairs, 36 based on Foata normal form. 24/314 useless extension candidates. Maximal degree in co-relation 1110. Up to 177 conditions per place. [2023-01-28 07:02:51,358 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 28 selfloop transitions, 5 changer transitions 20/57 dead transitions. [2023-01-28 07:02:51,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 536 flow [2023-01-28 07:02:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-01-28 07:02:51,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563768115942029 [2023-01-28 07:02:51,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-01-28 07:02:51,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-01-28 07:02:51,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:51,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-01-28 07:02:51,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 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 07:02:51,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:51,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:51,363 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 185 flow. Second operand 5 states and 389 transitions. [2023-01-28 07:02:51,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 536 flow [2023-01-28 07:02:51,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 399 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-28 07:02:51,366 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 164 flow [2023-01-28 07:02:51,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-01-28 07:02:51,367 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-28 07:02:51,367 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 164 flow [2023-01-28 07:02:51,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 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 07:02:51,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:51,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:51,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:02:51,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:51,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1470476291, now seen corresponding path program 1 times [2023-01-28 07:02:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:51,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443902000] [2023-01-28 07:02:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:51,517 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 07:02:51,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:51,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443902000] [2023-01-28 07:02:51,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443902000] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:51,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:51,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671421756] [2023-01-28 07:02:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:51,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:51,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-01-28 07:02:51,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 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 07:02:51,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:51,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-01-28 07:02:51,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:51,599 INFO L130 PetriNetUnfolder]: 111/231 cut-off events. [2023-01-28 07:02:51,599 INFO L131 PetriNetUnfolder]: For 537/597 co-relation queries the response was YES. [2023-01-28 07:02:51,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 231 events. 111/231 cut-off events. For 537/597 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 947 event pairs, 12 based on Foata normal form. 36/258 useless extension candidates. Maximal degree in co-relation 918. Up to 129 conditions per place. [2023-01-28 07:02:51,601 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 35 selfloop transitions, 8 changer transitions 20/67 dead transitions. [2023-01-28 07:02:51,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 531 flow [2023-01-28 07:02:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:02:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:02:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-01-28 07:02:51,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2023-01-28 07:02:51,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-01-28 07:02:51,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-01-28 07:02:51,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:51,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-01-28 07:02:51,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 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 07:02:51,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 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 07:02:51,607 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 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 07:02:51,607 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 164 flow. Second operand 7 states and 539 transitions. [2023-01-28 07:02:51,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 531 flow [2023-01-28 07:02:51,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 525 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:51,610 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 216 flow [2023-01-28 07:02:51,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2023-01-28 07:02:51,611 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-01-28 07:02:51,611 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 216 flow [2023-01-28 07:02:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 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 07:02:51,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:51,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:02:51,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:51,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash 521695694, now seen corresponding path program 1 times [2023-01-28 07:02:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528194883] [2023-01-28 07:02:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:51,726 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 07:02:51,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528194883] [2023-01-28 07:02:51,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528194883] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:51,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927538366] [2023-01-28 07:02:51,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:51,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:51,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:51,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 138 [2023-01-28 07:02:51,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 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 07:02:51,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:51,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 138 [2023-01-28 07:02:51,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:51,798 INFO L130 PetriNetUnfolder]: 133/267 cut-off events. [2023-01-28 07:02:51,799 INFO L131 PetriNetUnfolder]: For 661/661 co-relation queries the response was YES. [2023-01-28 07:02:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 267 events. 133/267 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 995 event pairs, 10 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1167. Up to 136 conditions per place. [2023-01-28 07:02:51,800 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 33 selfloop transitions, 11 changer transitions 8/52 dead transitions. [2023-01-28 07:02:51,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 446 flow [2023-01-28 07:02:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-01-28 07:02:51,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420289855072464 [2023-01-28 07:02:51,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-01-28 07:02:51,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-01-28 07:02:51,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:51,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-01-28 07:02:51,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 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 07:02:51,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:51,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 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 07:02:51,805 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 216 flow. Second operand 5 states and 374 transitions. [2023-01-28 07:02:51,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 446 flow [2023-01-28 07:02:51,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 393 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-01-28 07:02:51,809 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 208 flow [2023-01-28 07:02:51,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-01-28 07:02:51,809 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-01-28 07:02:51,809 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 208 flow [2023-01-28 07:02:51,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 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 07:02:51,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:51,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:02:51,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:51,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash 849736341, now seen corresponding path program 1 times [2023-01-28 07:02:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:51,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114566408] [2023-01-28 07:02:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:51,967 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 07:02:51,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114566408] [2023-01-28 07:02:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114566408] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:51,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:02:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540643261] [2023-01-28 07:02:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:51,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:02:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:02:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:02:51,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-01-28 07:02:51,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 07:02:51,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:51,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-01-28 07:02:51,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:52,036 INFO L130 PetriNetUnfolder]: 71/169 cut-off events. [2023-01-28 07:02:52,036 INFO L131 PetriNetUnfolder]: For 455/495 co-relation queries the response was YES. [2023-01-28 07:02:52,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 169 events. 71/169 cut-off events. For 455/495 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 672 event pairs, 10 based on Foata normal form. 27/191 useless extension candidates. Maximal degree in co-relation 705. Up to 59 conditions per place. [2023-01-28 07:02:52,037 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-01-28 07:02:52,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 442 flow [2023-01-28 07:02:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:02:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:02:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2023-01-28 07:02:52,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2023-01-28 07:02:52,039 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2023-01-28 07:02:52,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2023-01-28 07:02:52,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:52,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2023-01-28 07:02:52,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 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 07:02:52,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 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 07:02:52,043 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 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 07:02:52,043 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 208 flow. Second operand 7 states and 525 transitions. [2023-01-28 07:02:52,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 442 flow [2023-01-28 07:02:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 398 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-28 07:02:52,045 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-28 07:02:52,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-28 07:02:52,046 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-01-28 07:02:52,046 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-28 07:02:52,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 07:02:52,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:02:52,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:02:52,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:02:52,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:02:52,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:02:52,055 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:52,058 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:02:52,058 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:02:52,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:02:52 BasicIcfg [2023-01-28 07:02:52,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:02:52,062 INFO L158 Benchmark]: Toolchain (without parser) took 5908.11ms. Allocated memory was 369.1MB in the beginning and 444.6MB in the end (delta: 75.5MB). Free memory was 325.7MB in the beginning and 265.9MB in the end (delta: 59.8MB). Peak memory consumption was 136.0MB. Max. memory is 16.0GB. [2023-01-28 07:02:52,062 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:02:52,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.60ms. Allocated memory is still 369.1MB. Free memory was 325.7MB in the beginning and 305.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:02:52,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.66ms. Allocated memory is still 369.1MB. Free memory was 305.5MB in the beginning and 303.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:52,063 INFO L158 Benchmark]: Boogie Preprocessor took 46.48ms. Allocated memory is still 369.1MB. Free memory was 303.4MB in the beginning and 301.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:52,063 INFO L158 Benchmark]: RCFGBuilder took 439.86ms. Allocated memory is still 369.1MB. Free memory was 301.9MB in the beginning and 288.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:02:52,064 INFO L158 Benchmark]: TraceAbstraction took 4895.13ms. Allocated memory was 369.1MB in the beginning and 444.6MB in the end (delta: 75.5MB). Free memory was 287.6MB in the beginning and 265.9MB in the end (delta: 21.7MB). Peak memory consumption was 98.2MB. Max. memory is 16.0GB. [2023-01-28 07:02:52,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 476.60ms. Allocated memory is still 369.1MB. Free memory was 325.7MB in the beginning and 305.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.66ms. Allocated memory is still 369.1MB. Free memory was 305.5MB in the beginning and 303.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.48ms. Allocated memory is still 369.1MB. Free memory was 303.4MB in the beginning and 301.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 439.86ms. Allocated memory is still 369.1MB. Free memory was 301.9MB in the beginning and 288.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4895.13ms. Allocated memory was 369.1MB in the beginning and 444.6MB in the end (delta: 75.5MB). Free memory was 287.6MB in the beginning and 265.9MB in the end (delta: 21.7MB). Peak memory consumption was 98.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1625 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 906, independent: 840, independent conditional: 0, independent unconditional: 840, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 529, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 906, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 529, unknown conditional: 0, unknown unconditional: 529] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 7 procedures, 105 locations, 4 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: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 13 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 07:02:52,086 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...