/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/safe001_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:45:23,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:45:23,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:45:23,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:45:23,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:45:23,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:45:23,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:45:23,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:45:23,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:45:23,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:45:23,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:45:23,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:45:23,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:45:23,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:45:23,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:45:23,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:45:23,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:45:23,125 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 00:45:23,160 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:45:23,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:45:23,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:45:23,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:45:23,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:45:23,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:45:23,163 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:45:23,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:45:23,164 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:45:23,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:45:23,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:45:23,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:45:23,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:45:23,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:45:23,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:45:23,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:45:23,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:45:23,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:45:23,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:45:23,367 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:45:23,367 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:45:23,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-01-28 00:45:24,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:45:24,697 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:45:24,698 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-01-28 00:45:24,707 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91f35dec/5edf093d476a487db1c2ef987ef2cb5e/FLAG87b5ff86f [2023-01-28 00:45:24,717 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91f35dec/5edf093d476a487db1c2ef987ef2cb5e [2023-01-28 00:45:24,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:45:24,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:45:24,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:45:24,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:45:24,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:45:24,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:45:24" (1/1) ... [2023-01-28 00:45:24,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3334a92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:24, skipping insertion in model container [2023-01-28 00:45:24,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:45:24" (1/1) ... [2023-01-28 00:45:24,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:45:24,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:45:24,858 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/safe001_tso.i[945,958] [2023-01-28 00:45:24,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:45:24,986 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:45:24,997 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/safe001_tso.i[945,958] [2023-01-28 00:45:25,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:45:25,057 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:45:25,057 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:45:25,062 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:45:25,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25 WrapperNode [2023-01-28 00:45:25,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:45:25,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:45:25,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:45:25,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:45:25,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,108 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 00:45:25,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:45:25,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:45:25,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:45:25,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:45:25,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:45:25,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:45:25,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:45:25,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:45:25,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (1/1) ... [2023-01-28 00:45:25,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:45:25,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:45:25,177 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 00:45:25,189 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 00:45:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:45:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:45:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:45:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:45:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:45:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:45:25,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:45:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:45:25,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:45:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:45:25,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:45:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:45:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:45:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:45:25,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:45:25,222 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 00:45:25,319 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:45:25,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:45:25,437 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:45:25,442 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:45:25,442 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:45:25,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:45:25 BoogieIcfgContainer [2023-01-28 00:45:25,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:45:25,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:45:25,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:45:25,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:45:25,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:45:24" (1/3) ... [2023-01-28 00:45:25,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72977141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:45:25, skipping insertion in model container [2023-01-28 00:45:25,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:25" (2/3) ... [2023-01-28 00:45:25,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72977141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:45:25, skipping insertion in model container [2023-01-28 00:45:25,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:45:25" (3/3) ... [2023-01-28 00:45:25,449 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-01-28 00:45:25,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:45:25,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:45:25,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:45:25,531 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:45:25,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 00:45:25,608 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 00:45:25,608 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:45:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 00:45:25,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 00:45:25,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 00:45:25,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:45:25,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 00:45:25,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 00:45:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 00:45:25,638 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 00:45:25,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:45:25,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 00:45:25,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 00:45:26,992 INFO L134 LiptonReduction]: Checked pairs total: 1941 [2023-01-28 00:45:26,993 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-28 00:45:27,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:45:27,014 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;@42e0c083, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:45:27,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 00:45:27,022 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 00:45:27,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:45:27,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:27,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:27,023 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 00:45:27,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:27,027 INFO L85 PathProgramCache]: Analyzing trace with hash -856354579, now seen corresponding path program 1 times [2023-01-28 00:45:27,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:27,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484047680] [2023-01-28 00:45:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:27,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:27,531 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 00:45:27,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484047680] [2023-01-28 00:45:27,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484047680] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:27,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:45:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984204745] [2023-01-28 00:45:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:45:27,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:45:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:45:27,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:27,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 00:45:27,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:27,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:27,696 INFO L130 PetriNetUnfolder]: 562/906 cut-off events. [2023-01-28 00:45:27,696 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-28 00:45:27,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 906 events. 562/906 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3929 event pairs, 240 based on Foata normal form. 53/959 useless extension candidates. Maximal degree in co-relation 1856. Up to 478 conditions per place. [2023-01-28 00:45:27,704 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-01-28 00:45:27,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-01-28 00:45:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:45:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:45:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-01-28 00:45:27,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-01-28 00:45:27,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-01-28 00:45:27,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-01-28 00:45:27,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:27,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-01-28 00:45:27,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 00:45:27,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:45:27,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:45:27,729 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-01-28 00:45:27,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-01-28 00:45:27,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:45:27,740 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-01-28 00:45:27,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-28 00:45:27,743 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 00:45:27,744 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-01-28 00:45:27,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 00:45:27,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:27,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:27,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:45:27,744 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 00:45:27,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash -777188759, now seen corresponding path program 1 times [2023-01-28 00:45:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194727921] [2023-01-28 00:45:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:27,942 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 00:45:27,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:27,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194727921] [2023-01-28 00:45:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194727921] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:27,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184635607] [2023-01-28 00:45:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:27,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:27,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 00:45:27,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:27,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:28,058 INFO L130 PetriNetUnfolder]: 534/863 cut-off events. [2023-01-28 00:45:28,058 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-01-28 00:45:28,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 863 events. 534/863 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3789 event pairs, 69 based on Foata normal form. 6/869 useless extension candidates. Maximal degree in co-relation 2471. Up to 451 conditions per place. [2023-01-28 00:45:28,063 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-01-28 00:45:28,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 264 flow [2023-01-28 00:45:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-01-28 00:45:28,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5557553956834532 [2023-01-28 00:45:28,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-01-28 00:45:28,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-01-28 00:45:28,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:28,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-01-28 00:45:28,069 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 00:45:28,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:28,071 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:28,071 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 309 transitions. [2023-01-28 00:45:28,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 264 flow [2023-01-28 00:45:28,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 45 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:45:28,077 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2023-01-28 00:45:28,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-01-28 00:45:28,078 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 00:45:28,078 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2023-01-28 00:45:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 00:45:28,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:28,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:28,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:45:28,079 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 00:45:28,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:28,079 INFO L85 PathProgramCache]: Analyzing trace with hash -777188790, now seen corresponding path program 1 times [2023-01-28 00:45:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:28,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598775294] [2023-01-28 00:45:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:28,206 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 00:45:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598775294] [2023-01-28 00:45:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598775294] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:28,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:28,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304807506] [2023-01-28 00:45:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:28,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:28,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:28,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:28,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 00:45:28,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:28,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:28,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:28,304 INFO L130 PetriNetUnfolder]: 493/802 cut-off events. [2023-01-28 00:45:28,304 INFO L131 PetriNetUnfolder]: For 830/830 co-relation queries the response was YES. [2023-01-28 00:45:28,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 802 events. 493/802 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3335 event pairs, 77 based on Foata normal form. 8/810 useless extension candidates. Maximal degree in co-relation 2576. Up to 347 conditions per place. [2023-01-28 00:45:28,308 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 40 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2023-01-28 00:45:28,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 380 flow [2023-01-28 00:45:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-28 00:45:28,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-28 00:45:28,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-28 00:45:28,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-28 00:45:28,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:28,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-28 00:45:28,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 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 00:45:28,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:28,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:28,312 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 4 states and 308 transitions. [2023-01-28 00:45:28,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 380 flow [2023-01-28 00:45:28,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:45:28,315 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 296 flow [2023-01-28 00:45:28,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-01-28 00:45:28,316 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 00:45:28,316 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 296 flow [2023-01-28 00:45:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 00:45:28,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:28,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:45:28,316 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 00:45:28,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1314233776, now seen corresponding path program 1 times [2023-01-28 00:45:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515963930] [2023-01-28 00:45:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:28,398 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 00:45:28,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:28,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515963930] [2023-01-28 00:45:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515963930] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:28,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:28,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017678628] [2023-01-28 00:45:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:28,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:28,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:28,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 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 00:45:28,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:28,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:28,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:28,505 INFO L130 PetriNetUnfolder]: 508/839 cut-off events. [2023-01-28 00:45:28,505 INFO L131 PetriNetUnfolder]: For 1835/1835 co-relation queries the response was YES. [2023-01-28 00:45:28,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 839 events. 508/839 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3664 event pairs, 72 based on Foata normal form. 8/847 useless extension candidates. Maximal degree in co-relation 3088. Up to 342 conditions per place. [2023-01-28 00:45:28,509 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 36 selfloop transitions, 20 changer transitions 0/56 dead transitions. [2023-01-28 00:45:28,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 464 flow [2023-01-28 00:45:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-01-28 00:45:28,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-01-28 00:45:28,510 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-01-28 00:45:28,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-01-28 00:45:28,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:28,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-01-28 00:45:28,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 00:45:28,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:28,512 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:28,513 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 296 flow. Second operand 4 states and 310 transitions. [2023-01-28 00:45:28,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 464 flow [2023-01-28 00:45:28,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:45:28,518 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 376 flow [2023-01-28 00:45:28,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-01-28 00:45:28,520 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-01-28 00:45:28,520 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 376 flow [2023-01-28 00:45:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 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 00:45:28,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:28,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:28,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:45:28,521 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 00:45:28,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash 445206083, now seen corresponding path program 1 times [2023-01-28 00:45:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277394398] [2023-01-28 00:45:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:28,651 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 00:45:28,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277394398] [2023-01-28 00:45:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277394398] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:28,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:28,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676839028] [2023-01-28 00:45:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:28,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:45:28,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:28,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:45:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:45:28,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:28,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:45:28,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:28,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:28,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:28,770 INFO L130 PetriNetUnfolder]: 554/917 cut-off events. [2023-01-28 00:45:28,770 INFO L131 PetriNetUnfolder]: For 3324/3324 co-relation queries the response was YES. [2023-01-28 00:45:28,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 917 events. 554/917 cut-off events. For 3324/3324 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4003 event pairs, 136 based on Foata normal form. 28/945 useless extension candidates. Maximal degree in co-relation 3658. Up to 528 conditions per place. [2023-01-28 00:45:28,774 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 34 selfloop transitions, 9 changer transitions 20/63 dead transitions. [2023-01-28 00:45:28,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 627 flow [2023-01-28 00:45:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:45:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:45:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2023-01-28 00:45:28,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424460431654676 [2023-01-28 00:45:28,776 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2023-01-28 00:45:28,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2023-01-28 00:45:28,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:28,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2023-01-28 00:45:28,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:45:28,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 00:45:28,779 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 00:45:28,779 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 376 flow. Second operand 5 states and 377 transitions. [2023-01-28 00:45:28,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 627 flow [2023-01-28 00:45:28,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 623 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 00:45:28,786 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 299 flow [2023-01-28 00:45:28,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-01-28 00:45:28,788 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 00:45:28,788 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 299 flow [2023-01-28 00:45:28,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:45:28,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:28,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:28,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:45:28,789 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 00:45:28,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash 405618661, now seen corresponding path program 1 times [2023-01-28 00:45:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:28,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012802153] [2023-01-28 00:45:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:28,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:28,907 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 00:45:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012802153] [2023-01-28 00:45:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012802153] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274852487] [2023-01-28 00:45:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:28,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:28,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:28,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 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 00:45:28,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:28,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:29,000 INFO L130 PetriNetUnfolder]: 243/420 cut-off events. [2023-01-28 00:45:29,001 INFO L131 PetriNetUnfolder]: For 1718/1718 co-relation queries the response was YES. [2023-01-28 00:45:29,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 420 events. 243/420 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1496 event pairs, 57 based on Foata normal form. 4/424 useless extension candidates. Maximal degree in co-relation 1798. Up to 206 conditions per place. [2023-01-28 00:45:29,004 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-01-28 00:45:29,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 480 flow [2023-01-28 00:45:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-01-28 00:45:29,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-01-28 00:45:29,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-01-28 00:45:29,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-01-28 00:45:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:29,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-01-28 00:45:29,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 00:45:29,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:29,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:29,008 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 299 flow. Second operand 4 states and 310 transitions. [2023-01-28 00:45:29,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 480 flow [2023-01-28 00:45:29,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 426 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-28 00:45:29,012 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 347 flow [2023-01-28 00:45:29,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=347, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-01-28 00:45:29,014 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 00:45:29,015 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 347 flow [2023-01-28 00:45:29,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 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 00:45:29,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:29,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:45:29,015 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 00:45:29,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash -995434081, now seen corresponding path program 1 times [2023-01-28 00:45:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:29,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541240321] [2023-01-28 00:45:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:29,170 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 00:45:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541240321] [2023-01-28 00:45:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541240321] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:29,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:29,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:29,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079217435] [2023-01-28 00:45:29,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:29,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:29,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:45:29,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 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 00:45:29,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:29,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:45:29,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:29,251 INFO L130 PetriNetUnfolder]: 273/504 cut-off events. [2023-01-28 00:45:29,252 INFO L131 PetriNetUnfolder]: For 2127/2132 co-relation queries the response was YES. [2023-01-28 00:45:29,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 504 events. 273/504 cut-off events. For 2127/2132 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2134 event pairs, 85 based on Foata normal form. 16/513 useless extension candidates. Maximal degree in co-relation 2084. Up to 200 conditions per place. [2023-01-28 00:45:29,255 INFO L137 encePairwiseOnDemand]: 135/139 looper letters, 25 selfloop transitions, 5 changer transitions 11/45 dead transitions. [2023-01-28 00:45:29,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 485 flow [2023-01-28 00:45:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-01-28 00:45:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-01-28 00:45:29,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-01-28 00:45:29,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-01-28 00:45:29,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:29,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-01-28 00:45:29,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 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 00:45:29,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:29,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 00:45:29,258 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 347 flow. Second operand 4 states and 314 transitions. [2023-01-28 00:45:29,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 485 flow [2023-01-28 00:45:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:45:29,264 INFO L231 Difference]: Finished difference. Result has 52 places, 25 transitions, 261 flow [2023-01-28 00:45:29,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2023-01-28 00:45:29,264 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-01-28 00:45:29,264 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 261 flow [2023-01-28 00:45:29,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 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 00:45:29,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:29,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:29,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:45:29,266 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 00:45:29,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash -258315683, now seen corresponding path program 2 times [2023-01-28 00:45:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396106482] [2023-01-28 00:45:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:29,413 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 00:45:29,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396106482] [2023-01-28 00:45:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396106482] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:29,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:29,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:45:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031565850] [2023-01-28 00:45:29,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:29,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:45:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:29,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:45:29,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:45:29,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:45:29,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 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 00:45:29,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:29,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:45:29,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:29,488 INFO L130 PetriNetUnfolder]: 187/334 cut-off events. [2023-01-28 00:45:29,488 INFO L131 PetriNetUnfolder]: For 1358/1358 co-relation queries the response was YES. [2023-01-28 00:45:29,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 334 events. 187/334 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1205 event pairs, 28 based on Foata normal form. 12/346 useless extension candidates. Maximal degree in co-relation 1398. Up to 100 conditions per place. [2023-01-28 00:45:29,490 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 21 selfloop transitions, 5 changer transitions 19/45 dead transitions. [2023-01-28 00:45:29,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 420 flow [2023-01-28 00:45:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:45:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:45:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2023-01-28 00:45:29,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311750599520384 [2023-01-28 00:45:29,492 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 443 transitions. [2023-01-28 00:45:29,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 443 transitions. [2023-01-28 00:45:29,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:29,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 443 transitions. [2023-01-28 00:45:29,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 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 00:45:29,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 00:45:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 00:45:29,496 INFO L175 Difference]: Start difference. First operand has 52 places, 25 transitions, 261 flow. Second operand 6 states and 443 transitions. [2023-01-28 00:45:29,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 420 flow [2023-01-28 00:45:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 338 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-01-28 00:45:29,499 INFO L231 Difference]: Finished difference. Result has 46 places, 17 transitions, 112 flow [2023-01-28 00:45:29,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2023-01-28 00:45:29,501 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 00:45:29,501 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 112 flow [2023-01-28 00:45:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 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 00:45:29,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:29,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:29,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:45:29,502 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 00:45:29,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1061372941, now seen corresponding path program 3 times [2023-01-28 00:45:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:29,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631964700] [2023-01-28 00:45:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:29,619 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 00:45:29,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:29,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631964700] [2023-01-28 00:45:29,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631964700] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:29,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:29,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496112463] [2023-01-28 00:45:29,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:29,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:29,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:45:29,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 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 00:45:29,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:29,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:45:29,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:29,668 INFO L130 PetriNetUnfolder]: 46/113 cut-off events. [2023-01-28 00:45:29,668 INFO L131 PetriNetUnfolder]: For 241/243 co-relation queries the response was YES. [2023-01-28 00:45:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 113 events. 46/113 cut-off events. For 241/243 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 357 event pairs, 16 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 366. Up to 62 conditions per place. [2023-01-28 00:45:29,669 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-01-28 00:45:29,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 252 flow [2023-01-28 00:45:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:45:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:45:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-28 00:45:29,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-01-28 00:45:29,670 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-28 00:45:29,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-28 00:45:29,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:29,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-28 00:45:29,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 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 00:45:29,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 00:45:29,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 00:45:29,673 INFO L175 Difference]: Start difference. First operand has 46 places, 17 transitions, 112 flow. Second operand 5 states and 390 transitions. [2023-01-28 00:45:29,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 252 flow [2023-01-28 00:45:29,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 175 flow, removed 7 selfloop flow, removed 16 redundant places. [2023-01-28 00:45:29,675 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 87 flow [2023-01-28 00:45:29,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2023-01-28 00:45:29,676 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-01-28 00:45:29,676 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 87 flow [2023-01-28 00:45:29,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 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 00:45:29,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:29,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:29,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:45:29,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:45:29,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:29,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1810660225, now seen corresponding path program 1 times [2023-01-28 00:45:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:29,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29985025] [2023-01-28 00:45:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:29,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:29,816 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 00:45:29,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29985025] [2023-01-28 00:45:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29985025] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:29,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275550485] [2023-01-28 00:45:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:29,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:45:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:45:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:45:29,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:45:29,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 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 00:45:29,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:29,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:45:29,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:29,855 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-01-28 00:45:29,855 INFO L131 PetriNetUnfolder]: For 65/72 co-relation queries the response was YES. [2023-01-28 00:45:29,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 68 events. 24/68 cut-off events. For 65/72 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 170 event pairs, 3 based on Foata normal form. 7/73 useless extension candidates. Maximal degree in co-relation 232. Up to 40 conditions per place. [2023-01-28 00:45:29,855 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-01-28 00:45:29,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 245 flow [2023-01-28 00:45:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:45:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:45:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-01-28 00:45:29,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-28 00:45:29,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-01-28 00:45:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-01-28 00:45:29,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:29,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-01-28 00:45:29,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 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 00:45:29,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 00:45:29,859 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 00:45:29,859 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 87 flow. Second operand 6 states and 462 transitions. [2023-01-28 00:45:29,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 245 flow [2023-01-28 00:45:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:45:29,860 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 106 flow [2023-01-28 00:45:29,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2023-01-28 00:45:29,861 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-01-28 00:45:29,861 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 106 flow [2023-01-28 00:45:29,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 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 00:45:29,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:29,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:29,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:45:29,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:45:29,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1948075786, now seen corresponding path program 1 times [2023-01-28 00:45:29,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:29,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956551806] [2023-01-28 00:45:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:29,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:29,946 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 00:45:29,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956551806] [2023-01-28 00:45:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956551806] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:29,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:45:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811371288] [2023-01-28 00:45:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:29,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:45:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:45:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:45:29,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:45:29,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 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 00:45:29,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:29,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:45:29,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:29,980 INFO L130 PetriNetUnfolder]: 11/41 cut-off events. [2023-01-28 00:45:29,980 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2023-01-28 00:45:29,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 41 events. 11/41 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 2 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 151. Up to 17 conditions per place. [2023-01-28 00:45:29,980 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-01-28 00:45:29,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 180 flow [2023-01-28 00:45:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:45:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:45:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-01-28 00:45:29,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354573484069887 [2023-01-28 00:45:29,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-01-28 00:45:29,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-01-28 00:45:29,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:29,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-01-28 00:45:29,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 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 00:45:29,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 00:45:29,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 00:45:29,984 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 106 flow. Second operand 7 states and 521 transitions. [2023-01-28 00:45:29,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 180 flow [2023-01-28 00:45:29,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 153 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 00:45:29,985 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-01-28 00:45:29,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-01-28 00:45:29,985 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-28 00:45:29,985 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-01-28 00:45:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 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 00:45:29,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 00:45:29,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 00:45:29,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 00:45:29,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 00:45:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:45:29,988 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:29,990 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:45:29,990 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:45:29,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:45:29 BasicIcfg [2023-01-28 00:45:29,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:45:29,992 INFO L158 Benchmark]: Toolchain (without parser) took 5273.02ms. Allocated memory was 675.3MB in the beginning and 811.6MB in the end (delta: 136.3MB). Free memory was 624.0MB in the beginning and 579.2MB in the end (delta: 44.8MB). Peak memory consumption was 183.0MB. Max. memory is 16.0GB. [2023-01-28 00:45:29,992 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 392.2MB. Free memory is still 340.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:45:29,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.65ms. Allocated memory is still 675.3MB. Free memory was 624.0MB in the beginning and 603.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:45:29,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.34ms. Allocated memory is still 675.3MB. Free memory was 603.8MB in the beginning and 601.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:45:29,993 INFO L158 Benchmark]: Boogie Preprocessor took 32.31ms. Allocated memory is still 675.3MB. Free memory was 601.7MB in the beginning and 600.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:45:29,993 INFO L158 Benchmark]: RCFGBuilder took 301.59ms. Allocated memory is still 675.3MB. Free memory was 600.3MB in the beginning and 586.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:45:29,993 INFO L158 Benchmark]: TraceAbstraction took 4547.02ms. Allocated memory was 675.3MB in the beginning and 811.6MB in the end (delta: 136.3MB). Free memory was 586.0MB in the beginning and 579.2MB in the end (delta: 6.8MB). Peak memory consumption was 145.2MB. Max. memory is 16.0GB. [2023-01-28 00:45:29,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 392.2MB. Free memory is still 340.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 342.65ms. Allocated memory is still 675.3MB. Free memory was 624.0MB in the beginning and 603.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.34ms. Allocated memory is still 675.3MB. Free memory was 603.8MB in the beginning and 601.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.31ms. Allocated memory is still 675.3MB. Free memory was 601.7MB in the beginning and 600.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 301.59ms. Allocated memory is still 675.3MB. Free memory was 600.3MB in the beginning and 586.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4547.02ms. Allocated memory was 675.3MB in the beginning and 811.6MB in the end (delta: 136.3MB). Free memory was 586.0MB in the beginning and 579.2MB in the end (delta: 6.8MB). Peak memory consumption was 145.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1941 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1183, independent: 1105, independent conditional: 0, independent unconditional: 1105, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1183, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, 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 7 procedures, 107 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: 4.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 490 IncrementalHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 31 mSDtfsCounter, 490 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=4, InterpolantAutomatonStates: 52, 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, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 00:45:30,018 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...