/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/goblint-regression/28-race_reach_19-callback_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:38:48,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:38:48,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:38:48,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:38:48,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:38:48,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:38:48,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:38:48,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:38:48,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:38:48,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:38:48,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:38:48,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:38:48,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:38:48,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:38:48,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:38:48,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:38:48,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:38:48,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:38:48,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:38:48,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:38:48,126 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 01:38:48,148 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:38:48,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:38:48,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:38:48,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:38:48,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:38:48,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:38:48,150 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:38:48,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:38:48,150 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:38:48,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:38:48,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:38:48,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:38:48,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:38:48,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:38:48,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:38:48,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:38:48,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:38:48,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:38:48,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:38:48,152 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:38:48,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:38:48,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:38:48,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:38:48,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:38:48,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:38:48,374 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:38:48,374 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:38:48,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-01-28 01:38:49,283 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:38:49,506 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:38:49,507 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-01-28 01:38:49,518 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2b83aa9/bcebdef82ef34605b8c3eaedbfc43e76/FLAGb9df122f2 [2023-01-28 01:38:49,527 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2b83aa9/bcebdef82ef34605b8c3eaedbfc43e76 [2023-01-28 01:38:49,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:38:49,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:38:49,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:38:49,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:38:49,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:38:49,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b47a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49, skipping insertion in model container [2023-01-28 01:38:49,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:38:49,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:38:49,773 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2023-01-28 01:38:49,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:38:49,810 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:38:49,851 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2023-01-28 01:38:49,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:38:49,880 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 01:38:49,884 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:38:49,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49 WrapperNode [2023-01-28 01:38:49,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:38:49,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:38:49,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:38:49,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:38:49,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,928 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-01-28 01:38:49,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:38:49,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:38:49,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:38:49,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:38:49,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:38:49,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:38:49,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:38:49,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:38:49,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (1/1) ... [2023-01-28 01:38:49,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:38:49,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:38:49,994 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 01:38:50,001 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 01:38:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:38:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:38:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:38:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:38:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:38:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:38:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:38:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:38:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:38:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:38:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:38:50,032 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 01:38:50,199 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:38:50,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:38:50,369 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:38:50,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:38:50,374 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-01-28 01:38:50,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:38:50 BoogieIcfgContainer [2023-01-28 01:38:50,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:38:50,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:38:50,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:38:50,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:38:50,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:38:49" (1/3) ... [2023-01-28 01:38:50,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f099f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:38:50, skipping insertion in model container [2023-01-28 01:38:50,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:38:49" (2/3) ... [2023-01-28 01:38:50,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f099f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:38:50, skipping insertion in model container [2023-01-28 01:38:50,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:38:50" (3/3) ... [2023-01-28 01:38:50,381 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-01-28 01:38:50,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:38:50,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:38:50,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:38:50,429 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:38:50,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 135 transitions, 278 flow [2023-01-28 01:38:50,495 INFO L130 PetriNetUnfolder]: 26/205 cut-off events. [2023-01-28 01:38:50,495 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:38:50,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 205 events. 26/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 529 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-01-28 01:38:50,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 135 transitions, 278 flow [2023-01-28 01:38:50,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 265 flow [2023-01-28 01:38:50,504 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:50,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 265 flow [2023-01-28 01:38:50,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 265 flow [2023-01-28 01:38:50,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 265 flow [2023-01-28 01:38:50,537 INFO L130 PetriNetUnfolder]: 25/200 cut-off events. [2023-01-28 01:38:50,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:38:50,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 25/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 492 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-01-28 01:38:50,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-01-28 01:38:53,231 INFO L134 LiptonReduction]: Checked pairs total: 4311 [2023-01-28 01:38:53,231 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-01-28 01:38:53,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:53,247 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:53,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:53,254 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-01-28 01:38:53,254 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:38:53,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:53,255 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:38:53,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:53,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2099235342, now seen corresponding path program 1 times [2023-01-28 01:38:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042809543] [2023-01-28 01:38:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:53,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:53,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:53,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:53,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:38:53,404 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:53,405 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:53,406 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:53,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:38:53,424 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:38:53,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-01-28 01:38:53,483 INFO L130 PetriNetUnfolder]: 43/321 cut-off events. [2023-01-28 01:38:53,483 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:38:53,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 43/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-01-28 01:38:53,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 157 transitions, 332 flow [2023-01-28 01:38:53,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 157 transitions, 332 flow [2023-01-28 01:38:53,488 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:53,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 157 transitions, 332 flow [2023-01-28 01:38:53,489 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 157 transitions, 332 flow [2023-01-28 01:38:53,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-01-28 01:38:53,514 INFO L130 PetriNetUnfolder]: 43/321 cut-off events. [2023-01-28 01:38:53,515 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:38:53,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 43/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-01-28 01:38:53,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-01-28 01:38:56,197 INFO L134 LiptonReduction]: Checked pairs total: 12194 [2023-01-28 01:38:56,197 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-01-28 01:38:56,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:56,200 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:56,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:56,204 INFO L130 PetriNetUnfolder]: 19/65 cut-off events. [2023-01-28 01:38:56,204 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:38:56,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:56,204 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:38:56,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:56,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1130747368, now seen corresponding path program 1 times [2023-01-28 01:38:56,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:56,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64011824] [2023-01-28 01:38:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:56,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:56,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:56,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:56,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:56,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:56,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:38:56,241 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:56,242 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:56,242 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:56,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:38:56,254 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:38:56,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 179 transitions, 388 flow [2023-01-28 01:38:56,289 INFO L130 PetriNetUnfolder]: 65/468 cut-off events. [2023-01-28 01:38:56,289 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:38:56,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 468 events. 65/468 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1836 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-01-28 01:38:56,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 179 transitions, 388 flow [2023-01-28 01:38:56,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 179 transitions, 388 flow [2023-01-28 01:38:56,293 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:56,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 179 transitions, 388 flow [2023-01-28 01:38:56,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 179 transitions, 388 flow [2023-01-28 01:38:56,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 179 transitions, 388 flow [2023-01-28 01:38:56,321 INFO L130 PetriNetUnfolder]: 65/468 cut-off events. [2023-01-28 01:38:56,321 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:38:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 468 events. 65/468 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1836 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-01-28 01:38:56,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 12360 [2023-01-28 01:38:59,117 INFO L134 LiptonReduction]: Checked pairs total: 22561 [2023-01-28 01:38:59,117 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-01-28 01:38:59,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:59,119 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:59,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:59,124 INFO L130 PetriNetUnfolder]: 31/103 cut-off events. [2023-01-28 01:38:59,124 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:38:59,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:59,124 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:38:59,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:59,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash 144683176, now seen corresponding path program 1 times [2023-01-28 01:38:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940771845] [2023-01-28 01:38:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:59,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:59,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:59,172 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:59,173 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:59,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:38:59,173 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:59,173 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:59,173 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:59,173 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:38:59,186 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:38:59,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 201 transitions, 446 flow [2023-01-28 01:38:59,240 INFO L130 PetriNetUnfolder]: 99/679 cut-off events. [2023-01-28 01:38:59,241 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:38:59,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 679 events. 99/679 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2925 event pairs, 6 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-01-28 01:38:59,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 201 transitions, 446 flow [2023-01-28 01:38:59,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 201 transitions, 446 flow [2023-01-28 01:38:59,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:38:59,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 201 transitions, 446 flow [2023-01-28 01:38:59,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 201 transitions, 446 flow [2023-01-28 01:38:59,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 201 transitions, 446 flow [2023-01-28 01:38:59,293 INFO L130 PetriNetUnfolder]: 99/679 cut-off events. [2023-01-28 01:38:59,294 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:38:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 679 events. 99/679 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2925 event pairs, 6 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-01-28 01:38:59,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 18320 [2023-01-28 01:39:02,016 INFO L134 LiptonReduction]: Checked pairs total: 32417 [2023-01-28 01:39:02,016 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-01-28 01:39:02,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:02,018 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:02,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:02,024 INFO L130 PetriNetUnfolder]: 43/144 cut-off events. [2023-01-28 01:39:02,024 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:39:02,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:02,024 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:02,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:02,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1174682695, now seen corresponding path program 1 times [2023-01-28 01:39:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58349636] [2023-01-28 01:39:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:02,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:02,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:02,059 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:02,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:39:02,059 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:02,059 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:02,059 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:02,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:39:02,072 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:39:02,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 506 flow [2023-01-28 01:39:02,146 INFO L130 PetriNetUnfolder]: 161/1022 cut-off events. [2023-01-28 01:39:02,146 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:39:02,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 1022 events. 161/1022 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4919 event pairs, 23 based on Foata normal form. 0/872 useless extension candidates. Maximal degree in co-relation 724. Up to 80 conditions per place. [2023-01-28 01:39:02,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 223 transitions, 506 flow [2023-01-28 01:39:02,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 223 transitions, 506 flow [2023-01-28 01:39:02,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:02,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 223 transitions, 506 flow [2023-01-28 01:39:02,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 223 transitions, 506 flow [2023-01-28 01:39:02,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 506 flow [2023-01-28 01:39:02,235 INFO L130 PetriNetUnfolder]: 161/1022 cut-off events. [2023-01-28 01:39:02,236 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:39:02,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 1022 events. 161/1022 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4919 event pairs, 23 based on Foata normal form. 0/872 useless extension candidates. Maximal degree in co-relation 724. Up to 80 conditions per place. [2023-01-28 01:39:02,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 25200 [2023-01-28 01:39:05,041 INFO L134 LiptonReduction]: Checked pairs total: 46889 [2023-01-28 01:39:05,041 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-01-28 01:39:05,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:05,044 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:05,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:05,054 INFO L130 PetriNetUnfolder]: 60/198 cut-off events. [2023-01-28 01:39:05,054 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:39:05,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:05,054 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:05,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:05,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash -504175984, now seen corresponding path program 1 times [2023-01-28 01:39:05,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:05,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405931074] [2023-01-28 01:39:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:05,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:05,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:05,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:05,084 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:05,085 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:05,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:39:05,085 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:05,085 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:05,085 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:05,085 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:39:05,104 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:39:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 568 flow [2023-01-28 01:39:05,295 INFO L130 PetriNetUnfolder]: 287/1637 cut-off events. [2023-01-28 01:39:05,295 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:39:05,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1637 events. 287/1637 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9187 event pairs, 72 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 1121. Up to 192 conditions per place. [2023-01-28 01:39:05,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 245 transitions, 568 flow [2023-01-28 01:39:05,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 245 transitions, 568 flow [2023-01-28 01:39:05,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:05,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 245 transitions, 568 flow [2023-01-28 01:39:05,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 245 transitions, 568 flow [2023-01-28 01:39:05,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 568 flow [2023-01-28 01:39:05,456 INFO L130 PetriNetUnfolder]: 287/1637 cut-off events. [2023-01-28 01:39:05,457 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:39:05,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1637 events. 287/1637 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9187 event pairs, 72 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 1121. Up to 192 conditions per place. [2023-01-28 01:39:05,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 33000 [2023-01-28 01:39:08,516 INFO L134 LiptonReduction]: Checked pairs total: 62515 [2023-01-28 01:39:08,517 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-01-28 01:39:08,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:08,518 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:08,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:08,530 INFO L130 PetriNetUnfolder]: 80/262 cut-off events. [2023-01-28 01:39:08,530 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:39:08,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:08,530 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:08,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:08,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -504472264, now seen corresponding path program 1 times [2023-01-28 01:39:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356770303] [2023-01-28 01:39:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:08,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:08,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:08,593 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:08,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:08,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:39:08,593 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:08,593 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:08,593 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:08,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:39:08,622 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:39:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 267 transitions, 632 flow [2023-01-28 01:39:08,903 INFO L130 PetriNetUnfolder]: 557/2812 cut-off events. [2023-01-28 01:39:08,903 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:39:08,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 2812 events. 557/2812 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18705 event pairs, 201 based on Foata normal form. 0/2440 useless extension candidates. Maximal degree in co-relation 1855. Up to 448 conditions per place. [2023-01-28 01:39:08,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 267 transitions, 632 flow [2023-01-28 01:39:08,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 267 transitions, 632 flow [2023-01-28 01:39:08,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:08,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 267 transitions, 632 flow [2023-01-28 01:39:08,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 267 transitions, 632 flow [2023-01-28 01:39:08,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 267 transitions, 632 flow [2023-01-28 01:39:09,271 INFO L130 PetriNetUnfolder]: 557/2812 cut-off events. [2023-01-28 01:39:09,271 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:39:09,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 2812 events. 557/2812 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18705 event pairs, 201 based on Foata normal form. 0/2440 useless extension candidates. Maximal degree in co-relation 1855. Up to 448 conditions per place. [2023-01-28 01:39:09,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 41720 [2023-01-28 01:39:12,363 INFO L134 LiptonReduction]: Checked pairs total: 82389 [2023-01-28 01:39:12,364 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-01-28 01:39:12,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:12,365 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:12,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:12,381 INFO L130 PetriNetUnfolder]: 100/338 cut-off events. [2023-01-28 01:39:12,381 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:39:12,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:12,381 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:12,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:12,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash 421903111, now seen corresponding path program 1 times [2023-01-28 01:39:12,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:12,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145175942] [2023-01-28 01:39:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:12,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:12,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:12,411 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:12,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:12,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:39:12,411 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:12,411 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:12,411 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:12,411 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:39:12,427 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:39:12,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 289 transitions, 698 flow [2023-01-28 01:39:13,071 INFO L130 PetriNetUnfolder]: 1147/5139 cut-off events. [2023-01-28 01:39:13,072 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:39:13,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 5139 events. 1147/5139 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40485 event pairs, 522 based on Foata normal form. 0/4496 useless extension candidates. Maximal degree in co-relation 3294. Up to 1024 conditions per place. [2023-01-28 01:39:13,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 289 transitions, 698 flow [2023-01-28 01:39:13,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 289 transitions, 698 flow [2023-01-28 01:39:13,142 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:13,142 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 289 transitions, 698 flow [2023-01-28 01:39:13,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 289 transitions, 698 flow [2023-01-28 01:39:13,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 289 transitions, 698 flow [2023-01-28 01:39:13,724 INFO L130 PetriNetUnfolder]: 1147/5139 cut-off events. [2023-01-28 01:39:13,724 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:39:13,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 5139 events. 1147/5139 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40485 event pairs, 522 based on Foata normal form. 0/4496 useless extension candidates. Maximal degree in co-relation 3294. Up to 1024 conditions per place. [2023-01-28 01:39:13,942 INFO L119 LiptonReduction]: Number of co-enabled transitions 51360 [2023-01-28 01:39:17,210 INFO L134 LiptonReduction]: Checked pairs total: 102575 [2023-01-28 01:39:17,211 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-01-28 01:39:17,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:17,212 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:17,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:17,234 INFO L130 PetriNetUnfolder]: 133/447 cut-off events. [2023-01-28 01:39:17,235 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:39:17,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:17,235 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:17,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:17,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1591478006, now seen corresponding path program 1 times [2023-01-28 01:39:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265983026] [2023-01-28 01:39:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:17,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:17,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:17,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:17,294 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:17,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:17,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:39:17,295 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:17,296 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:17,296 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:17,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:39:17,314 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:39:17,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 311 transitions, 766 flow [2023-01-28 01:39:18,581 INFO L130 PetriNetUnfolder]: 2441/9834 cut-off events. [2023-01-28 01:39:18,582 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:39:18,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12211 conditions, 9834 events. 2441/9834 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 88907 event pairs, 1291 based on Foata normal form. 0/8664 useless extension candidates. Maximal degree in co-relation 6206. Up to 2304 conditions per place. [2023-01-28 01:39:18,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 311 transitions, 766 flow [2023-01-28 01:39:18,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 311 transitions, 766 flow [2023-01-28 01:39:18,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:18,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 311 transitions, 766 flow [2023-01-28 01:39:18,876 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 311 transitions, 766 flow [2023-01-28 01:39:18,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 311 transitions, 766 flow [2023-01-28 01:39:20,187 INFO L130 PetriNetUnfolder]: 2441/9834 cut-off events. [2023-01-28 01:39:20,190 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:39:20,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12211 conditions, 9834 events. 2441/9834 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 88907 event pairs, 1291 based on Foata normal form. 0/8664 useless extension candidates. Maximal degree in co-relation 6206. Up to 2304 conditions per place. [2023-01-28 01:39:20,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 61920 [2023-01-28 01:39:23,894 INFO L134 LiptonReduction]: Checked pairs total: 124407 [2023-01-28 01:39:23,895 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-01-28 01:39:23,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:23,896 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:23,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:23,936 INFO L130 PetriNetUnfolder]: 178/594 cut-off events. [2023-01-28 01:39:23,936 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:39:23,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:23,936 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:23,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:23,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash -542805282, now seen corresponding path program 1 times [2023-01-28 01:39:23,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788990097] [2023-01-28 01:39:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:23,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:23,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:23,988 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:23,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:23,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:39:23,988 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:23,991 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:23,991 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:23,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:39:24,011 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:39:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 333 transitions, 836 flow [2023-01-28 01:39:27,003 INFO L130 PetriNetUnfolder]: 5271/19393 cut-off events. [2023-01-28 01:39:27,003 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:39:27,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24599 conditions, 19393 events. 5271/19393 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198768 event pairs, 3084 based on Foata normal form. 0/17184 useless extension candidates. Maximal degree in co-relation 12191. Up to 5120 conditions per place. [2023-01-28 01:39:27,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 333 transitions, 836 flow [2023-01-28 01:39:27,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 333 transitions, 836 flow [2023-01-28 01:39:27,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:27,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 333 transitions, 836 flow [2023-01-28 01:39:27,360 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 333 transitions, 836 flow [2023-01-28 01:39:27,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 333 transitions, 836 flow [2023-01-28 01:39:30,390 INFO L130 PetriNetUnfolder]: 5271/19393 cut-off events. [2023-01-28 01:39:30,391 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:39:30,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24599 conditions, 19393 events. 5271/19393 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198768 event pairs, 3084 based on Foata normal form. 0/17184 useless extension candidates. Maximal degree in co-relation 12191. Up to 5120 conditions per place. [2023-01-28 01:39:31,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 73400 [2023-01-28 01:39:34,562 INFO L134 LiptonReduction]: Checked pairs total: 151044 [2023-01-28 01:39:34,562 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-01-28 01:39:34,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:34,563 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:34,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:34,611 INFO L130 PetriNetUnfolder]: 258/830 cut-off events. [2023-01-28 01:39:34,611 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:39:34,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:34,611 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:34,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:34,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -503631764, now seen corresponding path program 1 times [2023-01-28 01:39:34,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687903199] [2023-01-28 01:39:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:34,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:34,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:34,642 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:34,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:39:34,642 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:34,643 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:34,643 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:34,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:39:34,661 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:39:34,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 355 transitions, 908 flow [2023-01-28 01:39:41,259 INFO L130 PetriNetUnfolder]: 11429/38936 cut-off events. [2023-01-28 01:39:41,259 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:39:41,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50300 conditions, 38936 events. 11429/38936 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443024 event pairs, 7181 based on Foata normal form. 0/34664 useless extension candidates. Maximal degree in co-relation 24577. Up to 11264 conditions per place. [2023-01-28 01:39:41,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 355 transitions, 908 flow [2023-01-28 01:39:42,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 355 transitions, 908 flow [2023-01-28 01:39:42,275 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:39:42,275 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 355 transitions, 908 flow [2023-01-28 01:39:42,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 355 transitions, 908 flow [2023-01-28 01:39:42,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 355 transitions, 908 flow [2023-01-28 01:39:48,907 INFO L130 PetriNetUnfolder]: 11429/38936 cut-off events. [2023-01-28 01:39:48,907 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:39:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50300 conditions, 38936 events. 11429/38936 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443024 event pairs, 7181 based on Foata normal form. 0/34664 useless extension candidates. Maximal degree in co-relation 24577. Up to 11264 conditions per place. [2023-01-28 01:39:50,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 85800 [2023-01-28 01:39:54,182 INFO L134 LiptonReduction]: Checked pairs total: 178443 [2023-01-28 01:39:54,183 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-01-28 01:39:54,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:54,184 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:54,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:54,249 INFO L130 PetriNetUnfolder]: 381/1168 cut-off events. [2023-01-28 01:39:54,250 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:39:54,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:54,250 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:39:54,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:54,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1665119257, now seen corresponding path program 1 times [2023-01-28 01:39:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221326615] [2023-01-28 01:39:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:54,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:54,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:54,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:54,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:39:54,292 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:54,293 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:54,293 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:54,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:39:54,312 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:39:54,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 377 transitions, 982 flow [2023-01-28 01:40:09,041 INFO L130 PetriNetUnfolder]: 24755/78959 cut-off events. [2023-01-28 01:40:09,041 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:40:11,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103650 conditions, 78959 events. 24755/78959 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 978095 event pairs, 16398 based on Foata normal form. 0/70576 useless extension candidates. Maximal degree in co-relation 50276. Up to 24576 conditions per place. [2023-01-28 01:40:11,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 377 transitions, 982 flow [2023-01-28 01:40:12,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 377 transitions, 982 flow [2023-01-28 01:40:12,237 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:12,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 377 transitions, 982 flow [2023-01-28 01:40:12,238 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 377 transitions, 982 flow [2023-01-28 01:40:12,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 377 transitions, 982 flow [2023-01-28 01:40:26,551 INFO L130 PetriNetUnfolder]: 24755/78959 cut-off events. [2023-01-28 01:40:26,551 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:40:28,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103650 conditions, 78959 events. 24755/78959 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 978095 event pairs, 16398 based on Foata normal form. 0/70576 useless extension candidates. Maximal degree in co-relation 50276. Up to 24576 conditions per place. [2023-01-28 01:40:31,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 99120 [2023-01-28 01:40:35,588 INFO L134 LiptonReduction]: Checked pairs total: 227051 [2023-01-28 01:40:35,588 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-01-28 01:40:35,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:35,590 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:35,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:35,700 INFO L130 PetriNetUnfolder]: 597/1714 cut-off events. [2023-01-28 01:40:35,700 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:40:35,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:35,701 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:35,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:35,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1847365623, now seen corresponding path program 1 times [2023-01-28 01:40:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721305409] [2023-01-28 01:40:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:35,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:35,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:35,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:35,736 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:35,736 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:35,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:40:35,736 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:35,737 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:35,737 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:35,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:40:35,761 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:40:35,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 399 transitions, 1058 flow [2023-01-28 01:41:08,585 INFO L130 PetriNetUnfolder]: 53441/160966 cut-off events. [2023-01-28 01:41:08,585 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:41:15,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214345 conditions, 160966 events. 53441/160966 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177146 event pairs, 36879 based on Foata normal form. 0/144376 useless extension candidates. Maximal degree in co-relation 103624. Up to 53248 conditions per place. [2023-01-28 01:41:15,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 399 transitions, 1058 flow [2023-01-28 01:41:17,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 399 transitions, 1058 flow [2023-01-28 01:41:17,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:17,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 399 transitions, 1058 flow [2023-01-28 01:41:17,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 399 transitions, 1058 flow [2023-01-28 01:41:17,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 399 transitions, 1058 flow [2023-01-28 01:41:50,396 INFO L130 PetriNetUnfolder]: 53441/160966 cut-off events. [2023-01-28 01:41:50,397 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:41:57,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214345 conditions, 160966 events. 53441/160966 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177146 event pairs, 36879 based on Foata normal form. 0/144376 useless extension candidates. Maximal degree in co-relation 103624. Up to 53248 conditions per place. [2023-01-28 01:42:08,292 INFO L119 LiptonReduction]: Number of co-enabled transitions 113360 [2023-01-28 01:42:12,135 INFO L134 LiptonReduction]: Checked pairs total: 239918 [2023-01-28 01:42:12,136 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-01-28 01:42:12,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:12,141 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;@333c2347, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:12,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:12,323 INFO L130 PetriNetUnfolder]: 953/2564 cut-off events. [2023-01-28 01:42:12,323 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:42:12,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:12,323 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:12,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:12,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1361780754, now seen corresponding path program 1 times [2023-01-28 01:42:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187724024] [2023-01-28 01:42:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:12,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:12,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:12,356 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:12,356 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:12,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:42:12,357 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:12,357 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:12,357 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:12,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:42:12,375 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:42:12,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 421 transitions, 1136 flow [2023-01-28 01:43:30,527 INFO L130 PetriNetUnfolder]: 114895/328989 cut-off events. [2023-01-28 01:43:30,541 INFO L131 PetriNetUnfolder]: For 115234/115234 co-relation queries the response was YES.