/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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:48:04,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:48:04,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:48:04,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:48:04,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:48:04,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:48:04,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:48:04,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:48:04,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:48:04,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:48:04,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:48:04,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:48:04,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:48:04,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:48:04,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:48:04,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:48:04,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:48:04,382 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 00:48:04,400 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:48:04,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:48:04,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:48:04,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:48:04,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:48:04,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:48:04,402 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:48:04,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:48:04,403 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:48:04,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:48:04,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:48:04,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:48:04,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:48:04,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:48:04,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:48:04,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:48:04,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:48:04,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:48:04,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:48:04,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:48:04,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:48:04,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:48:04,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:48:04,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:48:04,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:48:04,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:48:04,608 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:48:04,608 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:48:04,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:48:05,546 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:48:05,805 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:48:05,805 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:48:05,816 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2d08a9b/d76ac937a2104d08886f10761245e12e/FLAG95d077191 [2023-01-28 00:48:05,825 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2d08a9b/d76ac937a2104d08886f10761245e12e [2023-01-28 00:48:05,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:48:05,827 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:48:05,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:48:05,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:48:05,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:48:05,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:48:05" (1/1) ... [2023-01-28 00:48:05,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223fb67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:05, skipping insertion in model container [2023-01-28 00:48:05,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:48:05" (1/1) ... [2023-01-28 00:48:05,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:48:05,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:48:05,953 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:48:06,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:48:06,076 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:48:06,084 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:48:06,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:48:06,121 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:48:06,121 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:48:06,126 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:48:06,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06 WrapperNode [2023-01-28 00:48:06,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:48:06,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:48:06,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:48:06,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:48:06,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,171 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-01-28 00:48:06,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:48:06,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:48:06,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:48:06,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:48:06,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:48:06,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:48:06,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:48:06,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:48:06,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (1/1) ... [2023-01-28 00:48:06,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:48:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:48:06,226 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 00:48:06,241 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 00:48:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:48:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:48:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:48:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:48:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:48:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:48:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:48:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:48:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:48:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:48:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:48:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-01-28 00:48:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-01-28 00:48:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:48:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:48:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:48:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:48:06,258 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 00:48:06,371 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:48:06,373 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:48:06,519 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:48:06,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:48:06,529 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:48:06,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:48:06 BoogieIcfgContainer [2023-01-28 00:48:06,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:48:06,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:48:06,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:48:06,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:48:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:48:05" (1/3) ... [2023-01-28 00:48:06,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3192f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:48:06, skipping insertion in model container [2023-01-28 00:48:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:06" (2/3) ... [2023-01-28 00:48:06,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3192f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:48:06, skipping insertion in model container [2023-01-28 00:48:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:48:06" (3/3) ... [2023-01-28 00:48:06,536 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:48:06,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:48:06,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:48:06,548 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:48:06,612 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:48:06,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2023-01-28 00:48:06,671 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2023-01-28 00:48:06,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:06,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-01-28 00:48:06,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 99 transitions, 218 flow [2023-01-28 00:48:06,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 81 transitions, 174 flow [2023-01-28 00:48:06,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:48:06,693 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 81 transitions, 174 flow [2023-01-28 00:48:06,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 81 transitions, 174 flow [2023-01-28 00:48:06,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 81 transitions, 174 flow [2023-01-28 00:48:06,742 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2023-01-28 00:48:06,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 1/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-01-28 00:48:06,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-01-28 00:48:08,334 INFO L134 LiptonReduction]: Checked pairs total: 2668 [2023-01-28 00:48:08,335 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-01-28 00:48:08,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:48:08,350 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;@4d7cec99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:48:08,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 00:48:08,353 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-01-28 00:48:08,353 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:08,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:08,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:08,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:08,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -109062191, now seen corresponding path program 1 times [2023-01-28 00:48:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:08,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9397624] [2023-01-28 00:48:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:48:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9397624] [2023-01-28 00:48:08,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9397624] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:08,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:08,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:48:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839580488] [2023-01-28 00:48:08,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:48:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:48:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:48:08,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-01-28 00:48:08,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 00:48:08,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:08,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-01-28 00:48:08,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:09,046 INFO L130 PetriNetUnfolder]: 1747/2539 cut-off events. [2023-01-28 00:48:09,046 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-01-28 00:48:09,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2539 events. 1747/2539 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11322 event pairs, 696 based on Foata normal form. 75/2614 useless extension candidates. Maximal degree in co-relation 5238. Up to 1811 conditions per place. [2023-01-28 00:48:09,063 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-01-28 00:48:09,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2023-01-28 00:48:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:48:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:48:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-01-28 00:48:09,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-01-28 00:48:09,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-01-28 00:48:09,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-01-28 00:48:09,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:09,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-01-28 00:48:09,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:48:09,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 00:48:09,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 00:48:09,089 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 285 transitions. [2023-01-28 00:48:09,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2023-01-28 00:48:09,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:48:09,102 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2023-01-28 00:48:09,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-01-28 00:48:09,107 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-01-28 00:48:09,107 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2023-01-28 00:48:09,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 00:48:09,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:09,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:09,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:48:09,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:09,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:09,110 INFO L85 PathProgramCache]: Analyzing trace with hash 914038522, now seen corresponding path program 1 times [2023-01-28 00:48:09,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:09,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071754001] [2023-01-28 00:48:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:09,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:09,344 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 00:48:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:09,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071754001] [2023-01-28 00:48:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071754001] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:09,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:09,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835997579] [2023-01-28 00:48:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:09,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-01-28 00:48:09,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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 00:48:09,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:09,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-01-28 00:48:09,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:09,506 INFO L130 PetriNetUnfolder]: 1647/2406 cut-off events. [2023-01-28 00:48:09,506 INFO L131 PetriNetUnfolder]: For 401/401 co-relation queries the response was YES. [2023-01-28 00:48:09,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6105 conditions, 2406 events. 1647/2406 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10611 event pairs, 249 based on Foata normal form. 33/2439 useless extension candidates. Maximal degree in co-relation 6094. Up to 1391 conditions per place. [2023-01-28 00:48:09,519 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-01-28 00:48:09,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 228 flow [2023-01-28 00:48:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-01-28 00:48:09,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-01-28 00:48:09,521 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-01-28 00:48:09,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-01-28 00:48:09,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:09,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-01-28 00:48:09,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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 00:48:09,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:09,524 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:09,525 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 370 transitions. [2023-01-28 00:48:09,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 228 flow [2023-01-28 00:48:09,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:48:09,531 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 113 flow [2023-01-28 00:48:09,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-01-28 00:48:09,531 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-01-28 00:48:09,531 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 113 flow [2023-01-28 00:48:09,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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 00:48:09,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:09,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:09,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:48:09,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:09,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash 914038677, now seen corresponding path program 1 times [2023-01-28 00:48:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:09,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68066410] [2023-01-28 00:48:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:09,616 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 00:48:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68066410] [2023-01-28 00:48:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68066410] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:09,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:48:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593435443] [2023-01-28 00:48:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:48:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:48:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:48:09,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-01-28 00:48:09,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 00:48:09,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:09,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-01-28 00:48:09,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:09,759 INFO L130 PetriNetUnfolder]: 1414/2106 cut-off events. [2023-01-28 00:48:09,759 INFO L131 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2023-01-28 00:48:09,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5732 conditions, 2106 events. 1414/2106 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9729 event pairs, 411 based on Foata normal form. 12/2036 useless extension candidates. Maximal degree in co-relation 5718. Up to 1733 conditions per place. [2023-01-28 00:48:09,771 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-01-28 00:48:09,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 217 flow [2023-01-28 00:48:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:48:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:48:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-01-28 00:48:09,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2023-01-28 00:48:09,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-01-28 00:48:09,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-01-28 00:48:09,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:09,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-01-28 00:48:09,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:48:09,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 00:48:09,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 00:48:09,775 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 113 flow. Second operand 3 states and 291 transitions. [2023-01-28 00:48:09,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 217 flow [2023-01-28 00:48:09,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:09,780 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 131 flow [2023-01-28 00:48:09,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-01-28 00:48:09,781 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-01-28 00:48:09,781 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 131 flow [2023-01-28 00:48:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 00:48:09,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:09,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:09,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:48:09,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:09,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1822099019, now seen corresponding path program 1 times [2023-01-28 00:48:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403748796] [2023-01-28 00:48:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:09,914 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 00:48:09,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403748796] [2023-01-28 00:48:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403748796] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:09,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:09,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534501673] [2023-01-28 00:48:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:09,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:09,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-01-28 00:48:09,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 00:48:09,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:09,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-01-28 00:48:09,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:10,067 INFO L130 PetriNetUnfolder]: 1489/2182 cut-off events. [2023-01-28 00:48:10,068 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-01-28 00:48:10,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 2182 events. 1489/2182 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9426 event pairs, 394 based on Foata normal form. 18/2200 useless extension candidates. Maximal degree in co-relation 6120. Up to 1369 conditions per place. [2023-01-28 00:48:10,079 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-01-28 00:48:10,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 316 flow [2023-01-28 00:48:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2023-01-28 00:48:10,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651515151515152 [2023-01-28 00:48:10,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2023-01-28 00:48:10,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2023-01-28 00:48:10,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:10,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2023-01-28 00:48:10,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 00:48:10,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:10,088 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:10,088 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 131 flow. Second operand 4 states and 373 transitions. [2023-01-28 00:48:10,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 316 flow [2023-01-28 00:48:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:48:10,092 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 189 flow [2023-01-28 00:48:10,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-01-28 00:48:10,094 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-01-28 00:48:10,094 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 189 flow [2023-01-28 00:48:10,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 00:48:10,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:10,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:10,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:48:10,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:10,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2077298808, now seen corresponding path program 1 times [2023-01-28 00:48:10,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:10,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588991662] [2023-01-28 00:48:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:48:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588991662] [2023-01-28 00:48:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588991662] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836374037] [2023-01-28 00:48:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:10,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:10,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-01-28 00:48:10,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 00:48:10,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:10,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-01-28 00:48:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:10,422 INFO L130 PetriNetUnfolder]: 1703/2579 cut-off events. [2023-01-28 00:48:10,423 INFO L131 PetriNetUnfolder]: For 4644/4801 co-relation queries the response was YES. [2023-01-28 00:48:10,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7860 conditions, 2579 events. 1703/2579 cut-off events. For 4644/4801 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13015 event pairs, 365 based on Foata normal form. 160/2721 useless extension candidates. Maximal degree in co-relation 7841. Up to 1080 conditions per place. [2023-01-28 00:48:10,432 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 44 selfloop transitions, 4 changer transitions 14/66 dead transitions. [2023-01-28 00:48:10,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 501 flow [2023-01-28 00:48:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2023-01-28 00:48:10,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2023-01-28 00:48:10,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2023-01-28 00:48:10,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2023-01-28 00:48:10,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:10,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2023-01-28 00:48:10,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 00:48:10,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:10,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:10,436 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 189 flow. Second operand 4 states and 387 transitions. [2023-01-28 00:48:10,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 501 flow [2023-01-28 00:48:10,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 66 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:48:10,444 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 202 flow [2023-01-28 00:48:10,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-01-28 00:48:10,445 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-01-28 00:48:10,445 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 202 flow [2023-01-28 00:48:10,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 00:48:10,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:10,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:10,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:48:10,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:10,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1566534828, now seen corresponding path program 1 times [2023-01-28 00:48:10,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:10,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020120865] [2023-01-28 00:48:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:10,580 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 00:48:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020120865] [2023-01-28 00:48:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020120865] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:10,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294314226] [2023-01-28 00:48:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:48:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:48:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:48:10,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-01-28 00:48:10,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 00:48:10,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:10,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-01-28 00:48:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:10,733 INFO L130 PetriNetUnfolder]: 1333/2026 cut-off events. [2023-01-28 00:48:10,733 INFO L131 PetriNetUnfolder]: For 3662/3662 co-relation queries the response was YES. [2023-01-28 00:48:10,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 2026 events. 1333/2026 cut-off events. For 3662/3662 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8962 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6426. Up to 888 conditions per place. [2023-01-28 00:48:10,741 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2023-01-28 00:48:10,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 427 flow [2023-01-28 00:48:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 460 transitions. [2023-01-28 00:48:10,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2023-01-28 00:48:10,743 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 460 transitions. [2023-01-28 00:48:10,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 460 transitions. [2023-01-28 00:48:10,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:10,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 460 transitions. [2023-01-28 00:48:10,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 00:48:10,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 00:48:10,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 00:48:10,745 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 202 flow. Second operand 5 states and 460 transitions. [2023-01-28 00:48:10,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 427 flow [2023-01-28 00:48:10,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 403 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 00:48:10,751 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 180 flow [2023-01-28 00:48:10,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-01-28 00:48:10,752 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-01-28 00:48:10,752 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 180 flow [2023-01-28 00:48:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 00:48:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:10,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:48:10,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:10,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash -388138933, now seen corresponding path program 1 times [2023-01-28 00:48:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946868087] [2023-01-28 00:48:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:10,889 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 00:48:10,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946868087] [2023-01-28 00:48:10,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946868087] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:10,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:10,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894674556] [2023-01-28 00:48:10,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:10,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:10,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:10,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-01-28 00:48:10,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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 00:48:10,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:10,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-01-28 00:48:10,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:11,012 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2023-01-28 00:48:11,012 INFO L131 PetriNetUnfolder]: For 2133/2133 co-relation queries the response was YES. [2023-01-28 00:48:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 1195 events. 770/1195 cut-off events. For 2133/2133 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5008 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3686. Up to 600 conditions per place. [2023-01-28 00:48:11,017 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2023-01-28 00:48:11,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 295 flow [2023-01-28 00:48:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2023-01-28 00:48:11,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2023-01-28 00:48:11,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2023-01-28 00:48:11,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2023-01-28 00:48:11,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:11,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2023-01-28 00:48:11,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 00:48:11,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:11,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 00:48:11,022 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 180 flow. Second operand 4 states and 366 transitions. [2023-01-28 00:48:11,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 295 flow [2023-01-28 00:48:11,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 260 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-01-28 00:48:11,026 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 156 flow [2023-01-28 00:48:11,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-01-28 00:48:11,027 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-01-28 00:48:11,027 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 156 flow [2023-01-28 00:48:11,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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 00:48:11,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:11,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:11,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:48:11,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:11,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1394447200, now seen corresponding path program 2 times [2023-01-28 00:48:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884750986] [2023-01-28 00:48:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:11,214 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 00:48:11,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884750986] [2023-01-28 00:48:11,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884750986] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:11,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:11,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:11,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942289313] [2023-01-28 00:48:11,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:11,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:11,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:11,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-01-28 00:48:11,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 00:48:11,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:11,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-01-28 00:48:11,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:11,313 INFO L130 PetriNetUnfolder]: 605/1012 cut-off events. [2023-01-28 00:48:11,313 INFO L131 PetriNetUnfolder]: For 2033/2076 co-relation queries the response was YES. [2023-01-28 00:48:11,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1012 events. 605/1012 cut-off events. For 2033/2076 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5086 event pairs, 207 based on Foata normal form. 51/1007 useless extension candidates. Maximal degree in co-relation 2888. Up to 662 conditions per place. [2023-01-28 00:48:11,320 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-01-28 00:48:11,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 523 flow [2023-01-28 00:48:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 469 transitions. [2023-01-28 00:48:11,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684848484848485 [2023-01-28 00:48:11,321 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 469 transitions. [2023-01-28 00:48:11,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 469 transitions. [2023-01-28 00:48:11,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:11,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 469 transitions. [2023-01-28 00:48:11,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 00:48:11,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 00:48:11,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 00:48:11,323 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 156 flow. Second operand 5 states and 469 transitions. [2023-01-28 00:48:11,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 523 flow [2023-01-28 00:48:11,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 465 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 00:48:11,326 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 179 flow [2023-01-28 00:48:11,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-01-28 00:48:11,326 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-01-28 00:48:11,327 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 179 flow [2023-01-28 00:48:11,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 00:48:11,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:11,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:11,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:48:11,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:11,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash 821537320, now seen corresponding path program 1 times [2023-01-28 00:48:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:11,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414225743] [2023-01-28 00:48:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:11,427 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 00:48:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414225743] [2023-01-28 00:48:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414225743] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:11,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:11,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663065673] [2023-01-28 00:48:11,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:11,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:48:11,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:48:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:48:11,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-01-28 00:48:11,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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 00:48:11,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:11,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-01-28 00:48:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:11,521 INFO L130 PetriNetUnfolder]: 429/756 cut-off events. [2023-01-28 00:48:11,521 INFO L131 PetriNetUnfolder]: For 1961/2154 co-relation queries the response was YES. [2023-01-28 00:48:11,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 756 events. 429/756 cut-off events. For 1961/2154 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3707 event pairs, 56 based on Foata normal form. 58/787 useless extension candidates. Maximal degree in co-relation 3012. Up to 511 conditions per place. [2023-01-28 00:48:11,524 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 55 selfloop transitions, 13 changer transitions 8/80 dead transitions. [2023-01-28 00:48:11,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 597 flow [2023-01-28 00:48:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:48:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:48:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2023-01-28 00:48:11,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686868686868687 [2023-01-28 00:48:11,526 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2023-01-28 00:48:11,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2023-01-28 00:48:11,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:11,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2023-01-28 00:48:11,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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 00:48:11,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 00:48:11,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 00:48:11,529 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 179 flow. Second operand 6 states and 563 transitions. [2023-01-28 00:48:11,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 597 flow [2023-01-28 00:48:11,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 590 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:11,532 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 282 flow [2023-01-28 00:48:11,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-01-28 00:48:11,533 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-01-28 00:48:11,533 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 282 flow [2023-01-28 00:48:11,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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 00:48:11,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:11,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:11,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:48:11,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:11,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash -302162279, now seen corresponding path program 1 times [2023-01-28 00:48:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78717260] [2023-01-28 00:48:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:11,647 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 00:48:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78717260] [2023-01-28 00:48:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78717260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:48:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855939188] [2023-01-28 00:48:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:48:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:48:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:48:11,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-01-28 00:48:11,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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 00:48:11,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:11,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-01-28 00:48:11,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:11,777 INFO L130 PetriNetUnfolder]: 396/713 cut-off events. [2023-01-28 00:48:11,777 INFO L131 PetriNetUnfolder]: For 2476/2929 co-relation queries the response was YES. [2023-01-28 00:48:11,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 713 events. 396/713 cut-off events. For 2476/2929 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3588 event pairs, 16 based on Foata normal form. 93/773 useless extension candidates. Maximal degree in co-relation 3653. Up to 494 conditions per place. [2023-01-28 00:48:11,779 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 48 selfloop transitions, 13 changer transitions 31/96 dead transitions. [2023-01-28 00:48:11,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 824 flow [2023-01-28 00:48:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 00:48:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 00:48:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 747 transitions. [2023-01-28 00:48:11,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659090909090909 [2023-01-28 00:48:11,781 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 747 transitions. [2023-01-28 00:48:11,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 747 transitions. [2023-01-28 00:48:11,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:11,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 747 transitions. [2023-01-28 00:48:11,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.375) internal successors, (747), 8 states have internal predecessors, (747), 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 00:48:11,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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 00:48:11,784 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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 00:48:11,784 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 282 flow. Second operand 8 states and 747 transitions. [2023-01-28 00:48:11,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 824 flow [2023-01-28 00:48:11,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 784 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:11,790 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 314 flow [2023-01-28 00:48:11,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-01-28 00:48:11,790 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-01-28 00:48:11,790 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 314 flow [2023-01-28 00:48:11,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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 00:48:11,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:11,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:48:11,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:11,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1709375480, now seen corresponding path program 1 times [2023-01-28 00:48:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099532256] [2023-01-28 00:48:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:11,885 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 00:48:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099532256] [2023-01-28 00:48:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099532256] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:48:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506611725] [2023-01-28 00:48:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:48:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:48:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:48:11,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-01-28 00:48:11,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 00:48:11,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:11,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-01-28 00:48:11,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:11,958 INFO L130 PetriNetUnfolder]: 312/556 cut-off events. [2023-01-28 00:48:11,958 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-01-28 00:48:11,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 556 events. 312/556 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2225 event pairs, 38 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2794. Up to 264 conditions per place. [2023-01-28 00:48:11,960 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 41 selfloop transitions, 6 changer transitions 46/93 dead transitions. [2023-01-28 00:48:11,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 981 flow [2023-01-28 00:48:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:48:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:48:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-01-28 00:48:11,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2023-01-28 00:48:11,962 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-01-28 00:48:11,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-01-28 00:48:11,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:11,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-01-28 00:48:11,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 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 00:48:11,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 00:48:11,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 00:48:11,965 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 314 flow. Second operand 6 states and 543 transitions. [2023-01-28 00:48:11,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 981 flow [2023-01-28 00:48:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 741 flow, removed 88 selfloop flow, removed 7 redundant places. [2023-01-28 00:48:11,971 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 236 flow [2023-01-28 00:48:11,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-01-28 00:48:11,971 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-01-28 00:48:11,971 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 236 flow [2023-01-28 00:48:11,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 00:48:11,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:11,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:11,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:48:11,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:11,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1665961714, now seen corresponding path program 1 times [2023-01-28 00:48:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238325502] [2023-01-28 00:48:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:12,114 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 00:48:12,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:12,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238325502] [2023-01-28 00:48:12,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238325502] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:12,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:12,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:48:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350725344] [2023-01-28 00:48:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:12,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:48:12,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:48:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:48:12,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-01-28 00:48:12,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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 00:48:12,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:12,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-01-28 00:48:12,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:12,180 INFO L130 PetriNetUnfolder]: 127/252 cut-off events. [2023-01-28 00:48:12,180 INFO L131 PetriNetUnfolder]: For 673/795 co-relation queries the response was YES. [2023-01-28 00:48:12,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 252 events. 127/252 cut-off events. For 673/795 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 943 event pairs, 8 based on Foata normal form. 49/291 useless extension candidates. Maximal degree in co-relation 1023. Up to 88 conditions per place. [2023-01-28 00:48:12,181 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2023-01-28 00:48:12,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 514 flow [2023-01-28 00:48:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 00:48:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 00:48:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 727 transitions. [2023-01-28 00:48:12,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507575757575758 [2023-01-28 00:48:12,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 727 transitions. [2023-01-28 00:48:12,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 727 transitions. [2023-01-28 00:48:12,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:12,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 727 transitions. [2023-01-28 00:48:12,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.875) internal successors, (727), 8 states have internal predecessors, (727), 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 00:48:12,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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 00:48:12,185 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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 00:48:12,185 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 236 flow. Second operand 8 states and 727 transitions. [2023-01-28 00:48:12,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 514 flow [2023-01-28 00:48:12,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 464 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-01-28 00:48:12,188 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 226 flow [2023-01-28 00:48:12,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-01-28 00:48:12,188 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2023-01-28 00:48:12,188 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 226 flow [2023-01-28 00:48:12,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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 00:48:12,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:12,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:12,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 00:48:12,189 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 00:48:12,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1227066264, now seen corresponding path program 1 times [2023-01-28 00:48:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561431790] [2023-01-28 00:48:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:12,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:12,275 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 00:48:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561431790] [2023-01-28 00:48:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561431790] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:12,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646030286] [2023-01-28 00:48:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:12,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:12,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-01-28 00:48:12,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 00:48:12,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:12,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-01-28 00:48:12,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:12,311 INFO L130 PetriNetUnfolder]: 73/142 cut-off events. [2023-01-28 00:48:12,312 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-01-28 00:48:12,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 142 events. 73/142 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 333 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 608. Up to 85 conditions per place. [2023-01-28 00:48:12,312 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-01-28 00:48:12,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 389 flow [2023-01-28 00:48:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2023-01-28 00:48:12,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-01-28 00:48:12,313 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2023-01-28 00:48:12,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2023-01-28 00:48:12,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:12,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2023-01-28 00:48:12,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 00:48:12,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 00:48:12,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 00:48:12,315 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 226 flow. Second operand 5 states and 429 transitions. [2023-01-28 00:48:12,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 389 flow [2023-01-28 00:48:12,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 310 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-01-28 00:48:12,316 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-01-28 00:48:12,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-01-28 00:48:12,317 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-01-28 00:48:12,317 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-01-28 00:48:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 00:48:12,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 00:48:12,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 00:48:12,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 00:48:12,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 00:48:12,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 00:48:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 00:48:12,320 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:12,322 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:48:12,322 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:48:12,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:48:12 BasicIcfg [2023-01-28 00:48:12,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:48:12,324 INFO L158 Benchmark]: Toolchain (without parser) took 6496.76ms. Allocated memory was 367.0MB in the beginning and 528.5MB in the end (delta: 161.5MB). Free memory was 335.5MB in the beginning and 261.6MB in the end (delta: 73.9MB). Peak memory consumption was 236.9MB. Max. memory is 16.0GB. [2023-01-28 00:48:12,324 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 212.9MB in the beginning and 212.8MB in the end (delta: 169.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:48:12,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.48ms. Allocated memory is still 367.0MB. Free memory was 335.1MB in the beginning and 315.0MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:48:12,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.09ms. Allocated memory is still 367.0MB. Free memory was 315.0MB in the beginning and 312.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:12,325 INFO L158 Benchmark]: Boogie Preprocessor took 27.28ms. Allocated memory is still 367.0MB. Free memory was 312.9MB in the beginning and 311.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:12,325 INFO L158 Benchmark]: RCFGBuilder took 331.03ms. Allocated memory is still 367.0MB. Free memory was 311.2MB in the beginning and 296.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 00:48:12,325 INFO L158 Benchmark]: TraceAbstraction took 5791.74ms. Allocated memory was 367.0MB in the beginning and 528.5MB in the end (delta: 161.5MB). Free memory was 296.1MB in the beginning and 261.6MB in the end (delta: 34.6MB). Peak memory consumption was 197.0MB. Max. memory is 16.0GB. [2023-01-28 00:48:12,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 212.9MB in the beginning and 212.8MB in the end (delta: 169.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 298.48ms. Allocated memory is still 367.0MB. Free memory was 335.1MB in the beginning and 315.0MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.09ms. Allocated memory is still 367.0MB. Free memory was 315.0MB in the beginning and 312.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.28ms. Allocated memory is still 367.0MB. Free memory was 312.9MB in the beginning and 311.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 331.03ms. Allocated memory is still 367.0MB. Free memory was 311.2MB in the beginning and 296.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5791.74ms. Allocated memory was 367.0MB in the beginning and 528.5MB in the end (delta: 161.5MB). Free memory was 296.1MB in the beginning and 261.6MB in the end (delta: 34.6MB). Peak memory consumption was 197.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 93 PlacesBefore, 33 PlacesAfterwards, 81 TransitionsBefore, 21 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 2668 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1418, independent: 1332, independent conditional: 0, independent unconditional: 1332, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 811, independent: 785, independent conditional: 0, independent unconditional: 785, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1418, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 811, unknown conditional: 0, unknown unconditional: 811] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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 9 procedures, 128 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 282 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 282 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 803 IncrementalHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 16 mSDtfsCounter, 803 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=314occurred in iteration=10, InterpolantAutomatonStates: 65, 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, 1.6s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 00:48:12,342 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...