/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:49:21,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:49:21,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:49:21,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:49:21,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:49:21,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:49:21,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:49:21,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:49:21,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:49:21,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:49:21,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:49:21,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:49:21,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:49:21,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:49:21,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:49:21,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:49:21,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:49:21,391 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 00:49:21,417 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:49:21,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:49:21,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:49:21,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:49:21,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:49:21,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:49:21,420 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:49:21,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:49:21,420 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:49:21,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:49:21,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:49:21,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:49:21,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:49:21,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:49:21,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:49:21,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:49:21,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:49:21,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:49:21,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:49:21,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:49:21,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:49:21,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:49:21,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:49:21,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:49:21,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:49:21,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:49:21,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:49:21,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:49:21,676 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:49:21,676 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:49:21,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-01-28 00:49:22,825 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:49:23,130 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:49:23,130 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-01-28 00:49:23,140 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d8c1a60/bb1f04901a574ac291527cb46965bf7f/FLAG7eb9d868d [2023-01-28 00:49:23,152 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d8c1a60/bb1f04901a574ac291527cb46965bf7f [2023-01-28 00:49:23,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:49:23,155 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:49:23,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:49:23,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:49:23,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:49:23,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b87a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23, skipping insertion in model container [2023-01-28 00:49:23,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:49:23,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:49:23,331 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/safe029_tso.i[945,958] [2023-01-28 00:49:23,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:49:23,513 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:49:23,528 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/safe029_tso.i[945,958] [2023-01-28 00:49:23,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:49:23,591 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:49:23,591 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:49:23,597 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:49:23,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23 WrapperNode [2023-01-28 00:49:23,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:49:23,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:49:23,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:49:23,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:49:23,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,654 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-01-28 00:49:23,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:49:23,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:49:23,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:49:23,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:49:23,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,688 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:49:23,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:49:23,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:49:23,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:49:23,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (1/1) ... [2023-01-28 00:49:23,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:49:23,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:49:23,726 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 00:49:23,747 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 00:49:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:49:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:49:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:49:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:49:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:49:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:49:23,764 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 00:49:23,937 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:49:23,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:49:24,120 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:49:24,126 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:49:24,127 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:49:24,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:49:24 BoogieIcfgContainer [2023-01-28 00:49:24,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:49:24,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:49:24,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:49:24,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:49:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:49:23" (1/3) ... [2023-01-28 00:49:24,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7110dab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:49:24, skipping insertion in model container [2023-01-28 00:49:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:23" (2/3) ... [2023-01-28 00:49:24,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7110dab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:49:24, skipping insertion in model container [2023-01-28 00:49:24,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:49:24" (3/3) ... [2023-01-28 00:49:24,136 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-01-28 00:49:24,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:49:24,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:49:24,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:49:24,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:49:24,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 142 flow [2023-01-28 00:49:24,312 INFO L130 PetriNetUnfolder]: 2/64 cut-off events. [2023-01-28 00:49:24,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:49:24,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-28 00:49:24,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 66 transitions, 142 flow [2023-01-28 00:49:24,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 114 flow [2023-01-28 00:49:24,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:49:24,342 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 54 transitions, 114 flow [2023-01-28 00:49:24,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 54 transitions, 114 flow [2023-01-28 00:49:24,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 54 transitions, 114 flow [2023-01-28 00:49:24,370 INFO L130 PetriNetUnfolder]: 1/54 cut-off events. [2023-01-28 00:49:24,370 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:49:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-28 00:49:24,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-01-28 00:49:25,875 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-01-28 00:49:25,875 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-01-28 00:49:25,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:49:25,892 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;@1d682976, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:49:25,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 00:49:25,895 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-28 00:49:25,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:49:25,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:25,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 00:49:25,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:49:25,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1741515607, now seen corresponding path program 1 times [2023-01-28 00:49:25,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047391196] [2023-01-28 00:49:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:26,380 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 00:49:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047391196] [2023-01-28 00:49:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047391196] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:26,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:26,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:49:26,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648105337] [2023-01-28 00:49:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:26,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:49:26,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:49:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:49:26,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 114 [2023-01-28 00:49:26,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 00:49:26,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:26,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 114 [2023-01-28 00:49:26,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:26,504 INFO L130 PetriNetUnfolder]: 63/131 cut-off events. [2023-01-28 00:49:26,504 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:49:26,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 131 events. 63/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 450 event pairs, 33 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 266. Up to 85 conditions per place. [2023-01-28 00:49:26,507 INFO L137 encePairwiseOnDemand]: 107/114 looper letters, 16 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2023-01-28 00:49:26,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 93 flow [2023-01-28 00:49:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:49:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:49:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-01-28 00:49:26,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-01-28 00:49:26,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-01-28 00:49:26,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-01-28 00:49:26,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:26,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-01-28 00:49:26,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 00:49:26,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:26,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:26,535 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 186 transitions. [2023-01-28 00:49:26,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 93 flow [2023-01-28 00:49:26,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:49:26,539 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 66 flow [2023-01-28 00:49:26,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-01-28 00:49:26,544 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-01-28 00:49:26,544 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 66 flow [2023-01-28 00:49:26,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 00:49:26,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:26,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:26,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:49:26,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:49:26,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1847590487, now seen corresponding path program 1 times [2023-01-28 00:49:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543917290] [2023-01-28 00:49:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:26,789 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 00:49:26,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543917290] [2023-01-28 00:49:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543917290] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:26,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:26,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:49:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885953766] [2023-01-28 00:49:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:49:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:49:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:49:26,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-01-28 00:49:26,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 00:49:26,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:26,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-01-28 00:49:26,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:26,845 INFO L130 PetriNetUnfolder]: 50/115 cut-off events. [2023-01-28 00:49:26,845 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-01-28 00:49:26,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 115 events. 50/115 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 389 event pairs, 14 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 321. Up to 89 conditions per place. [2023-01-28 00:49:26,847 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-01-28 00:49:26,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 132 flow [2023-01-28 00:49:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:49:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:49:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-01-28 00:49:26,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2023-01-28 00:49:26,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-01-28 00:49:26,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-01-28 00:49:26,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:26,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-01-28 00:49:26,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 00:49:26,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:26,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:26,856 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 66 flow. Second operand 3 states and 189 transitions. [2023-01-28 00:49:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 132 flow [2023-01-28 00:49:26,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:49:26,860 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 82 flow [2023-01-28 00:49:26,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-01-28 00:49:26,861 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-28 00:49:26,861 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 82 flow [2023-01-28 00:49:26,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 00:49:26,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:26,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:49:26,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:49:26,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1847590146, now seen corresponding path program 1 times [2023-01-28 00:49:26,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:26,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927520872] [2023-01-28 00:49:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:26,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:27,013 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 00:49:27,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927520872] [2023-01-28 00:49:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927520872] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:27,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:49:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370549031] [2023-01-28 00:49:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:49:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:49:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:49:27,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-01-28 00:49:27,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 00:49:27,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:27,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-01-28 00:49:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:27,056 INFO L130 PetriNetUnfolder]: 50/112 cut-off events. [2023-01-28 00:49:27,056 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-28 00:49:27,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 112 events. 50/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 361 event pairs, 13 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 300. Up to 89 conditions per place. [2023-01-28 00:49:27,060 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 16 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2023-01-28 00:49:27,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 138 flow [2023-01-28 00:49:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:49:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:49:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-01-28 00:49:27,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2023-01-28 00:49:27,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-01-28 00:49:27,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-01-28 00:49:27,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:27,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-01-28 00:49:27,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 00:49:27,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:27,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:27,066 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 82 flow. Second operand 3 states and 189 transitions. [2023-01-28 00:49:27,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 138 flow [2023-01-28 00:49:27,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:49:27,068 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 104 flow [2023-01-28 00:49:27,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-01-28 00:49:27,069 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-01-28 00:49:27,072 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 104 flow [2023-01-28 00:49:27,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 00:49:27,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:27,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:27,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:49:27,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:49:27,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1440729364, now seen corresponding path program 1 times [2023-01-28 00:49:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:27,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591043283] [2023-01-28 00:49:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:27,208 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 00:49:27,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591043283] [2023-01-28 00:49:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591043283] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:27,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:49:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102891621] [2023-01-28 00:49:27,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:49:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:27,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:49:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:49:27,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-01-28 00:49:27,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 00:49:27,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:27,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-01-28 00:49:27,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:27,239 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-01-28 00:49:27,240 INFO L131 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2023-01-28 00:49:27,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 55 events. 16/55 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 3 based on Foata normal form. 7/61 useless extension candidates. Maximal degree in co-relation 155. Up to 32 conditions per place. [2023-01-28 00:49:27,240 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 15 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-01-28 00:49:27,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 166 flow [2023-01-28 00:49:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:49:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:49:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-01-28 00:49:27,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2023-01-28 00:49:27,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-01-28 00:49:27,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-01-28 00:49:27,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:27,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-01-28 00:49:27,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 00:49:27,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:27,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:49:27,245 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 104 flow. Second operand 3 states and 188 transitions. [2023-01-28 00:49:27,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 166 flow [2023-01-28 00:49:27,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:49:27,246 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 99 flow [2023-01-28 00:49:27,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-28 00:49:27,247 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-28 00:49:27,247 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 99 flow [2023-01-28 00:49:27,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 00:49:27,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:27,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:27,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:49:27,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:49:27,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 766355382, now seen corresponding path program 1 times [2023-01-28 00:49:27,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:27,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202377014] [2023-01-28 00:49:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:27,350 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 00:49:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:27,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202377014] [2023-01-28 00:49:27,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202377014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:27,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:49:27,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101326785] [2023-01-28 00:49:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:27,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:49:27,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:49:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:49:27,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-01-28 00:49:27,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:49:27,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:27,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-01-28 00:49:27,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:27,384 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-01-28 00:49:27,384 INFO L131 PetriNetUnfolder]: For 24/27 co-relation queries the response was YES. [2023-01-28 00:49:27,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 30 events. 8/30 cut-off events. For 24/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 2 based on Foata normal form. 8/37 useless extension candidates. Maximal degree in co-relation 99. Up to 12 conditions per place. [2023-01-28 00:49:27,385 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-01-28 00:49:27,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 143 flow [2023-01-28 00:49:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:49:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:49:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-01-28 00:49:27,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-01-28 00:49:27,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-01-28 00:49:27,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-01-28 00:49:27,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:27,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-01-28 00:49:27,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 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 00:49:27,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 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 00:49:27,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 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 00:49:27,389 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 99 flow. Second operand 4 states and 244 transitions. [2023-01-28 00:49:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 143 flow [2023-01-28 00:49:27,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:49:27,393 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-28 00:49:27,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-28 00:49:27,395 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-28 00:49:27,395 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-28 00:49:27,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:49:27,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 00:49:27,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 00:49:27,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 00:49:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:49:27,402 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-01-28 00:49:27,406 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:49:27,407 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:49:27,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:49:27 BasicIcfg [2023-01-28 00:49:27,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:49:27,414 INFO L158 Benchmark]: Toolchain (without parser) took 4259.47ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 307.7MB in the beginning and 314.5MB in the end (delta: -6.7MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. [2023-01-28 00:49:27,415 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:49:27,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.28ms. Allocated memory is still 339.7MB. Free memory was 307.7MB in the beginning and 288.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:49:27,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.88ms. Allocated memory is still 339.7MB. Free memory was 288.2MB in the beginning and 286.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:49:27,420 INFO L158 Benchmark]: Boogie Preprocessor took 35.43ms. Allocated memory is still 339.7MB. Free memory was 286.3MB in the beginning and 284.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:49:27,420 INFO L158 Benchmark]: RCFGBuilder took 437.26ms. Allocated memory is still 339.7MB. Free memory was 284.8MB in the beginning and 272.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:49:27,421 INFO L158 Benchmark]: TraceAbstraction took 3283.37ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 271.5MB in the beginning and 314.5MB in the end (delta: -43.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-28 00:49:27,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 442.28ms. Allocated memory is still 339.7MB. Free memory was 307.7MB in the beginning and 288.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.88ms. Allocated memory is still 339.7MB. Free memory was 288.2MB in the beginning and 286.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.43ms. Allocated memory is still 339.7MB. Free memory was 286.3MB in the beginning and 284.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 437.26ms. Allocated memory is still 339.7MB. Free memory was 284.8MB in the beginning and 272.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3283.37ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 271.5MB in the beginning and 314.5MB in the end (delta: -43.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 60 PlacesBefore, 19 PlacesAfterwards, 54 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 501, independent: 446, independent conditional: 0, independent unconditional: 446, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 306, independent: 284, independent conditional: 0, independent unconditional: 284, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 501, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 306, unknown conditional: 0, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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 5 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 6 mSDtfsCounter, 92 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 00:49:27,437 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...