/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_37-indirect_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:44:56,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:44:56,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:44:56,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:44:56,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:44:56,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:44:56,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:44:56,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:44:56,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:44:56,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:44:56,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:44:56,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:44:56,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:44:56,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:44:56,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:44:56,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:44:56,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:44:56,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:44:56,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:44:56,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:44:56,092 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 01:44:56,112 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:44:56,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:44:56,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:44:56,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:44:56,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:44:56,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:44:56,114 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:44:56,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:44:56,114 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:44:56,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:44:56,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:44:56,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:44:56,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:44:56,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:44:56,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:44:56,115 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:44:56,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:44:56,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:44:56,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:44:56,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:44:56,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:44:56,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:44:56,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:44:56,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:44:56,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:44:56,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:44:56,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:44:56,278 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:44:56,279 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:44:56,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-01-28 01:44:57,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:44:57,452 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:44:57,452 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-01-28 01:44:57,460 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fddc1b5f8/182d6d5f8e4f4982b123a2e6c5c76da3/FLAG9fea6e636 [2023-01-28 01:44:57,473 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fddc1b5f8/182d6d5f8e4f4982b123a2e6c5c76da3 [2023-01-28 01:44:57,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:44:57,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:44:57,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:44:57,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:44:57,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:44:57,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6517f7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57, skipping insertion in model container [2023-01-28 01:44:57,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:44:57,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:44:57,707 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_37-indirect_racing.i[30176,30189] [2023-01-28 01:44:57,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:44:57,736 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:44:57,770 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_37-indirect_racing.i[30176,30189] [2023-01-28 01:44:57,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:44:57,807 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:44:57,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57 WrapperNode [2023-01-28 01:44:57,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:44:57,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:44:57,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:44:57,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:44:57,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,857 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-01-28 01:44:57,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:44:57,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:44:57,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:44:57,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:44:57,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:44:57,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:44:57,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:44:57,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:44:57,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (1/1) ... [2023-01-28 01:44:57,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:44:57,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:44:57,912 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 01:44:57,918 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 01:44:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:44:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:44:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:44:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:44:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:44:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:44:57,941 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:44:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:44:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:44:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:44:57,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:44:57,942 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 01:44:58,088 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:44:58,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:44:58,209 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:44:58,214 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:44:58,214 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:44:58,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:44:58 BoogieIcfgContainer [2023-01-28 01:44:58,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:44:58,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:44:58,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:44:58,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:44:58,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:44:57" (1/3) ... [2023-01-28 01:44:58,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298cffcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:44:58, skipping insertion in model container [2023-01-28 01:44:58,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:57" (2/3) ... [2023-01-28 01:44:58,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298cffcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:44:58, skipping insertion in model container [2023-01-28 01:44:58,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:44:58" (3/3) ... [2023-01-28 01:44:58,220 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-01-28 01:44:58,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:44:58,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:44:58,231 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:44:58,270 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:44:58,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 108 transitions, 224 flow [2023-01-28 01:44:58,383 INFO L130 PetriNetUnfolder]: 17/140 cut-off events. [2023-01-28 01:44:58,383 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:44:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 17/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 338 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2023-01-28 01:44:58,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 108 transitions, 224 flow [2023-01-28 01:44:58,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 103 transitions, 211 flow [2023-01-28 01:44:58,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:58,399 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 103 transitions, 211 flow [2023-01-28 01:44:58,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 103 transitions, 211 flow [2023-01-28 01:44:58,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 103 transitions, 211 flow [2023-01-28 01:44:58,421 INFO L130 PetriNetUnfolder]: 16/135 cut-off events. [2023-01-28 01:44:58,421 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:44:58,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 16/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 317 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2023-01-28 01:44:58,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 2432 [2023-01-28 01:45:00,692 INFO L134 LiptonReduction]: Checked pairs total: 4247 [2023-01-28 01:45:00,692 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-01-28 01:45:00,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:00,707 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:00,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:00,711 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2023-01-28 01:45:00,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:45:00,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:00,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:45:00,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:00,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -598310129, now seen corresponding path program 1 times [2023-01-28 01:45:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:00,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390246222] [2023-01-28 01:45:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:00,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:00,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:00,851 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:00,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:00,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:45:00,854 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:00,856 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:00,856 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:00,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:45:00,875 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:45:00,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-01-28 01:45:00,925 INFO L130 PetriNetUnfolder]: 31/230 cut-off events. [2023-01-28 01:45:00,925 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:45:00,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-01-28 01:45:00,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 142 transitions, 302 flow [2023-01-28 01:45:00,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 142 transitions, 302 flow [2023-01-28 01:45:00,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:00,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 142 transitions, 302 flow [2023-01-28 01:45:00,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 142 transitions, 302 flow [2023-01-28 01:45:00,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-01-28 01:45:00,962 INFO L130 PetriNetUnfolder]: 31/230 cut-off events. [2023-01-28 01:45:00,962 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:45:00,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-01-28 01:45:00,968 INFO L119 LiptonReduction]: Number of co-enabled transitions 7616 [2023-01-28 01:45:03,315 INFO L134 LiptonReduction]: Checked pairs total: 15436 [2023-01-28 01:45:03,315 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-01-28 01:45:03,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:03,317 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:03,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:03,321 INFO L130 PetriNetUnfolder]: 12/56 cut-off events. [2023-01-28 01:45:03,321 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:45:03,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:03,321 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:45:03,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:03,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash 560708747, now seen corresponding path program 1 times [2023-01-28 01:45:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448294492] [2023-01-28 01:45:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:03,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:03,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:03,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:03,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:03,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:45:03,388 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:03,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:03,389 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:03,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:45:03,403 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:45:03,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 176 transitions, 382 flow [2023-01-28 01:45:03,426 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-01-28 01:45:03,427 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:45:03,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1160 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2023-01-28 01:45:03,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 176 transitions, 382 flow [2023-01-28 01:45:03,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 176 transitions, 382 flow [2023-01-28 01:45:03,430 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:03,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 176 transitions, 382 flow [2023-01-28 01:45:03,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 176 transitions, 382 flow [2023-01-28 01:45:03,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 176 transitions, 382 flow [2023-01-28 01:45:03,451 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-01-28 01:45:03,451 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:45:03,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1160 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2023-01-28 01:45:03,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-01-28 01:45:05,635 INFO L134 LiptonReduction]: Checked pairs total: 33194 [2023-01-28 01:45:05,635 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-01-28 01:45:05,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:05,655 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:05,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:05,669 INFO L130 PetriNetUnfolder]: 21/91 cut-off events. [2023-01-28 01:45:05,669 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:45:05,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:05,669 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:45:05,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:05,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 187445566, now seen corresponding path program 1 times [2023-01-28 01:45:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340884486] [2023-01-28 01:45:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:05,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:05,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:05,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:05,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:05,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:45:05,752 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:05,753 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:05,753 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:05,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:45:05,778 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:45:05,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 210 transitions, 464 flow [2023-01-28 01:45:05,818 INFO L130 PetriNetUnfolder]: 81/536 cut-off events. [2023-01-28 01:45:05,818 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:45:05,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 536 events. 81/536 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2018 event pairs, 6 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-01-28 01:45:05,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 210 transitions, 464 flow [2023-01-28 01:45:05,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 210 transitions, 464 flow [2023-01-28 01:45:05,823 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:05,823 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 210 transitions, 464 flow [2023-01-28 01:45:05,824 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 210 transitions, 464 flow [2023-01-28 01:45:05,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 210 transitions, 464 flow [2023-01-28 01:45:05,861 INFO L130 PetriNetUnfolder]: 81/536 cut-off events. [2023-01-28 01:45:05,861 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:45:05,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 536 events. 81/536 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2018 event pairs, 6 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-01-28 01:45:05,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 24192 [2023-01-28 01:45:08,204 INFO L134 LiptonReduction]: Checked pairs total: 57171 [2023-01-28 01:45:08,204 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-01-28 01:45:08,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:08,206 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:08,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:08,212 INFO L130 PetriNetUnfolder]: 31/129 cut-off events. [2023-01-28 01:45:08,212 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:45:08,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:08,212 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:08,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:08,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1189301793, now seen corresponding path program 1 times [2023-01-28 01:45:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637303115] [2023-01-28 01:45:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:08,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:08,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:08,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:08,278 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:08,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:45:08,278 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:08,279 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:08,279 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:08,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:45:08,302 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:45:08,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 548 flow [2023-01-28 01:45:08,379 INFO L130 PetriNetUnfolder]: 140/853 cut-off events. [2023-01-28 01:45:08,379 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:45:08,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 853 events. 140/853 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3708 event pairs, 23 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 581. Up to 80 conditions per place. [2023-01-28 01:45:08,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 244 transitions, 548 flow [2023-01-28 01:45:08,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 244 transitions, 548 flow [2023-01-28 01:45:08,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:08,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 244 transitions, 548 flow [2023-01-28 01:45:08,411 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 244 transitions, 548 flow [2023-01-28 01:45:08,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 548 flow [2023-01-28 01:45:08,496 INFO L130 PetriNetUnfolder]: 140/853 cut-off events. [2023-01-28 01:45:08,496 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:45:08,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 853 events. 140/853 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3708 event pairs, 23 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 581. Up to 80 conditions per place. [2023-01-28 01:45:08,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 35840 [2023-01-28 01:45:10,781 INFO L134 LiptonReduction]: Checked pairs total: 89844 [2023-01-28 01:45:10,782 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-01-28 01:45:10,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:10,783 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:10,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:10,813 INFO L130 PetriNetUnfolder]: 43/177 cut-off events. [2023-01-28 01:45:10,813 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:45:10,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:10,813 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:10,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:10,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1085263115, now seen corresponding path program 1 times [2023-01-28 01:45:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884006114] [2023-01-28 01:45:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:10,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:10,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:10,869 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:10,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:10,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:45:10,869 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:10,870 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:10,870 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:10,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:45:10,893 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:45:10,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 278 transitions, 634 flow [2023-01-28 01:45:11,035 INFO L130 PetriNetUnfolder]: 263/1442 cut-off events. [2023-01-28 01:45:11,035 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:45:11,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1442 events. 263/1442 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7789 event pairs, 72 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 952. Up to 192 conditions per place. [2023-01-28 01:45:11,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 278 transitions, 634 flow [2023-01-28 01:45:11,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 278 transitions, 634 flow [2023-01-28 01:45:11,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:11,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 278 transitions, 634 flow [2023-01-28 01:45:11,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 278 transitions, 634 flow [2023-01-28 01:45:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 278 transitions, 634 flow [2023-01-28 01:45:11,188 INFO L130 PetriNetUnfolder]: 263/1442 cut-off events. [2023-01-28 01:45:11,190 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:45:11,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1442 events. 263/1442 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7789 event pairs, 72 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 952. Up to 192 conditions per place. [2023-01-28 01:45:11,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 49728 [2023-01-28 01:45:13,904 INFO L134 LiptonReduction]: Checked pairs total: 125050 [2023-01-28 01:45:13,904 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-01-28 01:45:13,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:13,906 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:13,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:13,917 INFO L130 PetriNetUnfolder]: 58/234 cut-off events. [2023-01-28 01:45:13,918 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:45:13,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:13,918 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:13,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:13,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:13,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1635017087, now seen corresponding path program 1 times [2023-01-28 01:45:13,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:13,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786138173] [2023-01-28 01:45:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:13,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:13,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:13,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:13,970 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:13,970 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:13,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:45:13,970 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:13,973 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:13,973 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:13,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:45:13,991 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:45:13,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 312 transitions, 722 flow [2023-01-28 01:45:14,279 INFO L130 PetriNetUnfolder]: 530/2591 cut-off events. [2023-01-28 01:45:14,279 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:45:14,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2591 events. 530/2591 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16907 event pairs, 201 based on Foata normal form. 0/2245 useless extension candidates. Maximal degree in co-relation 1660. Up to 448 conditions per place. [2023-01-28 01:45:14,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 312 transitions, 722 flow [2023-01-28 01:45:14,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 312 transitions, 722 flow [2023-01-28 01:45:14,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:14,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 312 transitions, 722 flow [2023-01-28 01:45:14,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 312 transitions, 722 flow [2023-01-28 01:45:14,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 312 transitions, 722 flow [2023-01-28 01:45:14,651 INFO L130 PetriNetUnfolder]: 530/2591 cut-off events. [2023-01-28 01:45:14,651 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:45:14,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2591 events. 530/2591 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16907 event pairs, 201 based on Foata normal form. 0/2245 useless extension candidates. Maximal degree in co-relation 1660. Up to 448 conditions per place. [2023-01-28 01:45:14,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 65856 [2023-01-28 01:45:16,969 INFO L134 LiptonReduction]: Checked pairs total: 168628 [2023-01-28 01:45:16,969 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-01-28 01:45:16,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:16,971 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:16,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:16,991 INFO L130 PetriNetUnfolder]: 78/311 cut-off events. [2023-01-28 01:45:16,991 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:45:16,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:16,991 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:16,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:16,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 622020831, now seen corresponding path program 1 times [2023-01-28 01:45:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914105923] [2023-01-28 01:45:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:17,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:17,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:17,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:17,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:17,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:45:17,036 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:17,037 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:17,037 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:17,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:45:17,066 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:45:17,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 346 transitions, 812 flow [2023-01-28 01:45:17,687 INFO L130 PetriNetUnfolder]: 1117/4892 cut-off events. [2023-01-28 01:45:17,687 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:45:17,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 4892 events. 1117/4892 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38032 event pairs, 522 based on Foata normal form. 0/4278 useless extension candidates. Maximal degree in co-relation 3073. Up to 1024 conditions per place. [2023-01-28 01:45:17,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 346 transitions, 812 flow [2023-01-28 01:45:17,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 346 transitions, 812 flow [2023-01-28 01:45:17,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:17,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 346 transitions, 812 flow [2023-01-28 01:45:17,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 346 transitions, 812 flow [2023-01-28 01:45:17,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 346 transitions, 812 flow [2023-01-28 01:45:18,447 INFO L130 PetriNetUnfolder]: 1117/4892 cut-off events. [2023-01-28 01:45:18,448 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:45:18,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 4892 events. 1117/4892 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38032 event pairs, 522 based on Foata normal form. 0/4278 useless extension candidates. Maximal degree in co-relation 3073. Up to 1024 conditions per place. [2023-01-28 01:45:18,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 84224 [2023-01-28 01:45:21,012 INFO L134 LiptonReduction]: Checked pairs total: 221885 [2023-01-28 01:45:21,012 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-01-28 01:45:21,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:21,013 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:21,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:21,070 INFO L130 PetriNetUnfolder]: 107/415 cut-off events. [2023-01-28 01:45:21,073 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:45:21,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:21,073 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:21,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:21,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash -272912286, now seen corresponding path program 1 times [2023-01-28 01:45:21,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906613552] [2023-01-28 01:45:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:21,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:21,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:21,111 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:21,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:21,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:45:21,112 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:21,113 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:21,113 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:21,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:45:21,135 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:45:21,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 380 transitions, 904 flow [2023-01-28 01:45:22,642 INFO L130 PetriNetUnfolder]: 2408/9561 cut-off events. [2023-01-28 01:45:22,643 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:45:22,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11938 conditions, 9561 events. 2408/9561 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86048 event pairs, 1291 based on Foata normal form. 0/8423 useless extension candidates. Maximal degree in co-relation 5959. Up to 2304 conditions per place. [2023-01-28 01:45:22,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 380 transitions, 904 flow [2023-01-28 01:45:22,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 380 transitions, 904 flow [2023-01-28 01:45:22,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:22,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 380 transitions, 904 flow [2023-01-28 01:45:22,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 380 transitions, 904 flow [2023-01-28 01:45:22,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 380 transitions, 904 flow [2023-01-28 01:45:24,436 INFO L130 PetriNetUnfolder]: 2408/9561 cut-off events. [2023-01-28 01:45:24,436 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:45:24,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11938 conditions, 9561 events. 2408/9561 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86048 event pairs, 1291 based on Foata normal form. 0/8423 useless extension candidates. Maximal degree in co-relation 5959. Up to 2304 conditions per place. [2023-01-28 01:45:24,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 104832 [2023-01-28 01:45:27,993 INFO L134 LiptonReduction]: Checked pairs total: 307817 [2023-01-28 01:45:27,994 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-01-28 01:45:27,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:27,995 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:27,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:28,030 INFO L130 PetriNetUnfolder]: 152/566 cut-off events. [2023-01-28 01:45:28,031 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:45:28,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:28,032 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:28,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:28,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:28,032 INFO L85 PathProgramCache]: Analyzing trace with hash -526774357, now seen corresponding path program 1 times [2023-01-28 01:45:28,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:28,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928407055] [2023-01-28 01:45:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:28,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:28,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:28,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:28,078 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:28,078 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:28,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:45:28,078 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:28,080 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:28,080 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:28,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:45:28,103 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:45:28,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 414 transitions, 998 flow [2023-01-28 01:45:31,756 INFO L130 PetriNetUnfolder]: 5235/19094 cut-off events. [2023-01-28 01:45:31,756 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:45:32,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24300 conditions, 19094 events. 5235/19094 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 194588 event pairs, 3084 based on Foata normal form. 0/16920 useless extension candidates. Maximal degree in co-relation 11918. Up to 5120 conditions per place. [2023-01-28 01:45:32,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 414 transitions, 998 flow [2023-01-28 01:45:32,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 414 transitions, 998 flow [2023-01-28 01:45:32,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:32,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 360 places, 414 transitions, 998 flow [2023-01-28 01:45:32,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 360 places, 414 transitions, 998 flow [2023-01-28 01:45:32,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 414 transitions, 998 flow [2023-01-28 01:45:36,011 INFO L130 PetriNetUnfolder]: 5235/19094 cut-off events. [2023-01-28 01:45:36,012 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:45:36,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24300 conditions, 19094 events. 5235/19094 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 194588 event pairs, 3084 based on Foata normal form. 0/16920 useless extension candidates. Maximal degree in co-relation 11918. Up to 5120 conditions per place. [2023-01-28 01:45:37,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 127680 [2023-01-28 01:45:39,474 INFO L134 LiptonReduction]: Checked pairs total: 339733 [2023-01-28 01:45:39,474 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-01-28 01:45:39,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:39,475 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:39,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:39,529 INFO L130 PetriNetUnfolder]: 226/790 cut-off events. [2023-01-28 01:45:39,529 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:45:39,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:39,529 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:39,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:39,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -373908253, now seen corresponding path program 1 times [2023-01-28 01:45:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84690362] [2023-01-28 01:45:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:39,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:39,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:39,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:39,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:39,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:45:39,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:39,579 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:39,579 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:39,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:45:39,599 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:45:39,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 448 transitions, 1094 flow [2023-01-28 01:45:47,783 INFO L130 PetriNetUnfolder]: 11390/38611 cut-off events. [2023-01-28 01:45:47,783 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:45:48,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49975 conditions, 38611 events. 11390/38611 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 440440 event pairs, 7181 based on Foata normal form. 0/34377 useless extension candidates. Maximal degree in co-relation 24278. Up to 11264 conditions per place. [2023-01-28 01:45:48,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 448 transitions, 1094 flow [2023-01-28 01:45:48,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 448 transitions, 1094 flow [2023-01-28 01:45:48,784 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:48,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 448 transitions, 1094 flow [2023-01-28 01:45:48,784 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 448 transitions, 1094 flow [2023-01-28 01:45:48,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 448 transitions, 1094 flow [2023-01-28 01:45:56,971 INFO L130 PetriNetUnfolder]: 11390/38611 cut-off events. [2023-01-28 01:45:56,972 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:45:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49975 conditions, 38611 events. 11390/38611 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 440440 event pairs, 7181 based on Foata normal form. 0/34377 useless extension candidates. Maximal degree in co-relation 24278. Up to 11264 conditions per place. [2023-01-28 01:45:59,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 152768 [2023-01-28 01:46:02,102 INFO L134 LiptonReduction]: Checked pairs total: 454236 [2023-01-28 01:46:02,102 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-01-28 01:46:02,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:02,104 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:02,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:02,181 INFO L130 PetriNetUnfolder]: 351/1135 cut-off events. [2023-01-28 01:46:02,182 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:46:02,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:02,182 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:46:02,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:02,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -544787279, now seen corresponding path program 1 times [2023-01-28 01:46:02,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:02,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750826577] [2023-01-28 01:46:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:02,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:02,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:02,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:02,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:02,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:02,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:46:02,245 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:02,245 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:02,245 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:02,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:46:02,267 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:46:02,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 482 transitions, 1192 flow [2023-01-28 01:46:20,299 INFO L130 PetriNetUnfolder]: 24713/78608 cut-off events. [2023-01-28 01:46:20,300 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:46:23,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 78608 events. 24713/78608 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 976378 event pairs, 16398 based on Foata normal form. 0/70266 useless extension candidates. Maximal degree in co-relation 49951. Up to 24576 conditions per place. [2023-01-28 01:46:23,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 482 transitions, 1192 flow [2023-01-28 01:46:24,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 482 transitions, 1192 flow [2023-01-28 01:46:24,471 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:24,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 482 transitions, 1192 flow [2023-01-28 01:46:24,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 482 transitions, 1192 flow [2023-01-28 01:46:24,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 482 transitions, 1192 flow [2023-01-28 01:46:44,055 INFO L130 PetriNetUnfolder]: 24713/78608 cut-off events. [2023-01-28 01:46:44,056 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:46:46,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 78608 events. 24713/78608 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 976378 event pairs, 16398 based on Foata normal form. 0/70266 useless extension candidates. Maximal degree in co-relation 49951. Up to 24576 conditions per place. [2023-01-28 01:46:52,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 180096 [2023-01-28 01:46:55,773 INFO L134 LiptonReduction]: Checked pairs total: 472539 [2023-01-28 01:46:55,773 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-01-28 01:46:55,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:55,781 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:55,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:55,902 INFO L130 PetriNetUnfolder]: 560/1659 cut-off events. [2023-01-28 01:46:55,902 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:46:55,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:55,902 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 01:46:55,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:55,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1062026947, now seen corresponding path program 1 times [2023-01-28 01:46:55,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:55,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590931552] [2023-01-28 01:46:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:55,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:55,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:55,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:55,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:55,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:46:55,932 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:55,932 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:55,932 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:55,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:46:55,958 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:46:55,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 516 transitions, 1292 flow [2023-01-28 01:47:36,995 INFO L130 PetriNetUnfolder]: 53396/160589 cut-off events. [2023-01-28 01:47:36,995 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:47:44,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213968 conditions, 160589 events. 53396/160589 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2160998 event pairs, 36879 based on Foata normal form. 0/144043 useless extension candidates. Maximal degree in co-relation 103273. Up to 53248 conditions per place. [2023-01-28 01:47:44,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 516 transitions, 1292 flow [2023-01-28 01:47:47,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 516 transitions, 1292 flow [2023-01-28 01:47:47,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:47:47,748 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 516 transitions, 1292 flow [2023-01-28 01:47:47,748 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 516 transitions, 1292 flow [2023-01-28 01:47:47,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 516 transitions, 1292 flow [2023-01-28 01:48:31,570 INFO L130 PetriNetUnfolder]: 53396/160589 cut-off events. [2023-01-28 01:48:31,570 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:48:38,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213968 conditions, 160589 events. 53396/160589 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2160998 event pairs, 36879 based on Foata normal form. 0/144043 useless extension candidates. Maximal degree in co-relation 103273. Up to 53248 conditions per place. [2023-01-28 01:48:55,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 209664 [2023-01-28 01:48:59,389 INFO L134 LiptonReduction]: Checked pairs total: 539829 [2023-01-28 01:48:59,390 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-01-28 01:48:59,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:59,391 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;@1bd3f5e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:59,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:59,587 INFO L130 PetriNetUnfolder]: 913/2461 cut-off events. [2023-01-28 01:48:59,587 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:48:59,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:59,588 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 01:48:59,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:59,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1854885235, now seen corresponding path program 1 times [2023-01-28 01:48:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:59,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218579598] [2023-01-28 01:48:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:59,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:59,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:59,639 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:59,640 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:59,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:48:59,640 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:59,640 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:59,640 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:59,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:48:59,666 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:48:59,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 550 transitions, 1394 flow