/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_06-cond_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:34:31,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:34:31,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:34:31,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:34:31,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:34:31,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:34:31,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:34:31,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:34:31,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:34:31,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:34:31,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:34:31,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:34:31,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:34:31,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:34:31,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:34:31,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:34:31,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:34:31,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:34:31,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:34:31,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:34:31,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:34:31,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:34:31,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:34:31,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:34:31,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:34:31,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:34:31,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:34:31,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:34:31,967 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 01:34:31,980 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:34:31,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:34:31,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:34:31,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:34:31,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:34:31,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:34:31,981 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:34:31,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:34:31,982 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:34:31,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:34:31,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:34:31,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:34:31,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:34:31,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:34:31,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:34:31,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:34:31,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:34:31,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:34:31,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:34:32,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:34:32,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:34:32,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:34:32,133 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:34:32,133 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:34:32,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-01-28 01:34:33,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:34:33,314 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:34:33,314 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-01-28 01:34:33,331 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfedc54a/1993e03bf6444ecb9c799d5515902e8c/FLAG99db6eb84 [2023-01-28 01:34:33,345 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfedc54a/1993e03bf6444ecb9c799d5515902e8c [2023-01-28 01:34:33,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:34:33,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:34:33,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:34:33,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:34:33,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:34:33,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42841d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33, skipping insertion in model container [2023-01-28 01:34:33,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:34:33,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:34:33,714 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_06-cond_racing1.i[41322,41335] [2023-01-28 01:34:33,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:34:33,736 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:34:33,757 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_06-cond_racing1.i[41322,41335] [2023-01-28 01:34:33,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:34:33,795 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:34:33,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33 WrapperNode [2023-01-28 01:34:33,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:34:33,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:34:33,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:34:33,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:34:33,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,838 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2023-01-28 01:34:33,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:34:33,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:34:33,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:34:33,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:34:33,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:34:33,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:34:33,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:34:33,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:34:33,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (1/1) ... [2023-01-28 01:34:33,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:34:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:34:33,904 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 01:34:33,925 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 01:34:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:34:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:34:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:34:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:34:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:34:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:34:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:34:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:34:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:34:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:34:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:34:33,938 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 01:34:34,025 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:34:34,026 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:34:34,215 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:34:34,227 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:34:34,227 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:34:34,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:34:34 BoogieIcfgContainer [2023-01-28 01:34:34,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:34:34,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:34:34,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:34:34,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:34:34,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:34:33" (1/3) ... [2023-01-28 01:34:34,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd76537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:34:34, skipping insertion in model container [2023-01-28 01:34:34,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:33" (2/3) ... [2023-01-28 01:34:34,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd76537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:34:34, skipping insertion in model container [2023-01-28 01:34:34,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:34:34" (3/3) ... [2023-01-28 01:34:34,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-01-28 01:34:34,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:34:34,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:34:34,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:34:34,326 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:34:34,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 119 transitions, 246 flow [2023-01-28 01:34:34,426 INFO L130 PetriNetUnfolder]: 23/161 cut-off events. [2023-01-28 01:34:34,426 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:34:34,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 23/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 79. Up to 6 conditions per place. [2023-01-28 01:34:34,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 119 transitions, 246 flow [2023-01-28 01:34:34,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 114 transitions, 233 flow [2023-01-28 01:34:34,437 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:34,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 114 transitions, 233 flow [2023-01-28 01:34:34,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 114 transitions, 233 flow [2023-01-28 01:34:34,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 114 transitions, 233 flow [2023-01-28 01:34:34,502 INFO L130 PetriNetUnfolder]: 22/156 cut-off events. [2023-01-28 01:34:34,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:34:34,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 156 events. 22/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 350 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 79. Up to 6 conditions per place. [2023-01-28 01:34:34,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-01-28 01:34:37,205 INFO L134 LiptonReduction]: Checked pairs total: 4411 [2023-01-28 01:34:37,205 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-01-28 01:34:37,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:37,230 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:37,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:37,234 INFO L130 PetriNetUnfolder]: 5/27 cut-off events. [2023-01-28 01:34:37,234 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:34:37,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:37,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:34:37,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:37,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash 690972307, now seen corresponding path program 1 times [2023-01-28 01:34:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040772813] [2023-01-28 01:34:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:37,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:37,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:37,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:37,413 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:37,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:34:37,415 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:37,416 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:37,417 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:37,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:34:37,443 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:34:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 149 transitions, 316 flow [2023-01-28 01:34:37,470 INFO L130 PetriNetUnfolder]: 40/257 cut-off events. [2023-01-28 01:34:37,470 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:34:37,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 257 events. 40/257 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 722 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 163. Up to 9 conditions per place. [2023-01-28 01:34:37,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 149 transitions, 316 flow [2023-01-28 01:34:37,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 149 transitions, 316 flow [2023-01-28 01:34:37,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:37,473 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 149 transitions, 316 flow [2023-01-28 01:34:37,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 149 transitions, 316 flow [2023-01-28 01:34:37,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 149 transitions, 316 flow [2023-01-28 01:34:37,497 INFO L130 PetriNetUnfolder]: 40/257 cut-off events. [2023-01-28 01:34:37,497 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:34:37,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 257 events. 40/257 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 722 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 163. Up to 9 conditions per place. [2023-01-28 01:34:37,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-01-28 01:34:39,952 INFO L134 LiptonReduction]: Checked pairs total: 17120 [2023-01-28 01:34:39,952 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-01-28 01:34:39,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:39,955 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:39,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:39,960 INFO L130 PetriNetUnfolder]: 15/62 cut-off events. [2023-01-28 01:34:39,960 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:34:39,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:39,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:34:39,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:39,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1652856533, now seen corresponding path program 1 times [2023-01-28 01:34:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112776184] [2023-01-28 01:34:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:40,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:40,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:40,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:40,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:34:40,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:40,046 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:40,046 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:40,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:34:40,073 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:34:40,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 179 transitions, 388 flow [2023-01-28 01:34:40,121 INFO L130 PetriNetUnfolder]: 62/384 cut-off events. [2023-01-28 01:34:40,122 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:34:40,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 62/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-01-28 01:34:40,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 179 transitions, 388 flow [2023-01-28 01:34:40,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 179 transitions, 388 flow [2023-01-28 01:34:40,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:40,130 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 179 transitions, 388 flow [2023-01-28 01:34:40,131 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 179 transitions, 388 flow [2023-01-28 01:34:40,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 179 transitions, 388 flow [2023-01-28 01:34:40,166 INFO L130 PetriNetUnfolder]: 62/384 cut-off events. [2023-01-28 01:34:40,170 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:34:40,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 62/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-01-28 01:34:40,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 13944 [2023-01-28 01:34:42,743 INFO L134 LiptonReduction]: Checked pairs total: 34673 [2023-01-28 01:34:42,744 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-01-28 01:34:42,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:42,746 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:42,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:42,751 INFO L130 PetriNetUnfolder]: 26/103 cut-off events. [2023-01-28 01:34:42,751 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:34:42,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:42,752 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:34:42,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:42,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash 672582438, now seen corresponding path program 1 times [2023-01-28 01:34:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332800817] [2023-01-28 01:34:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:42,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:42,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:42,784 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:42,785 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:34:42,785 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:42,785 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:42,785 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:42,785 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:34:42,798 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:34:42,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 209 transitions, 462 flow [2023-01-28 01:34:42,840 INFO L130 PetriNetUnfolder]: 96/575 cut-off events. [2023-01-28 01:34:42,840 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:34:42,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 575 events. 96/575 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2103 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-01-28 01:34:42,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 209 transitions, 462 flow [2023-01-28 01:34:42,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 209 transitions, 462 flow [2023-01-28 01:34:42,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:42,847 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 209 transitions, 462 flow [2023-01-28 01:34:42,847 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 209 transitions, 462 flow [2023-01-28 01:34:42,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 209 transitions, 462 flow [2023-01-28 01:34:42,886 INFO L130 PetriNetUnfolder]: 96/575 cut-off events. [2023-01-28 01:34:42,887 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:34:42,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 575 events. 96/575 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2103 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-01-28 01:34:42,901 INFO L119 LiptonReduction]: Number of co-enabled transitions 22064 [2023-01-28 01:34:45,617 INFO L134 LiptonReduction]: Checked pairs total: 64435 [2023-01-28 01:34:45,617 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-01-28 01:34:45,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:45,619 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:45,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:45,627 INFO L130 PetriNetUnfolder]: 36/143 cut-off events. [2023-01-28 01:34:45,627 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:34:45,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:45,627 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:34:45,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:45,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2088589946, now seen corresponding path program 1 times [2023-01-28 01:34:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:45,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933373282] [2023-01-28 01:34:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:45,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:45,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:45,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:45,674 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:45,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:34:45,674 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:45,675 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:45,675 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:45,675 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:34:45,693 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:34:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 239 transitions, 538 flow [2023-01-28 01:34:45,771 INFO L130 PetriNetUnfolder]: 158/898 cut-off events. [2023-01-28 01:34:45,771 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:34:45,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 898 events. 158/898 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3848 event pairs, 23 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 620. Up to 80 conditions per place. [2023-01-28 01:34:45,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 239 transitions, 538 flow [2023-01-28 01:34:45,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 239 transitions, 538 flow [2023-01-28 01:34:45,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:45,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 239 transitions, 538 flow [2023-01-28 01:34:45,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 239 transitions, 538 flow [2023-01-28 01:34:45,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 239 transitions, 538 flow [2023-01-28 01:34:45,860 INFO L130 PetriNetUnfolder]: 158/898 cut-off events. [2023-01-28 01:34:45,861 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:34:45,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 898 events. 158/898 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3848 event pairs, 23 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 620. Up to 80 conditions per place. [2023-01-28 01:34:45,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 31920 [2023-01-28 01:34:48,375 INFO L134 LiptonReduction]: Checked pairs total: 89067 [2023-01-28 01:34:48,375 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-01-28 01:34:48,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:48,386 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:48,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:48,397 INFO L130 PetriNetUnfolder]: 52/196 cut-off events. [2023-01-28 01:34:48,398 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:34:48,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:48,398 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:34:48,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:48,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1372851574, now seen corresponding path program 1 times [2023-01-28 01:34:48,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:48,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110408929] [2023-01-28 01:34:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:48,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:48,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:48,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:48,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:48,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:48,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:34:48,464 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:48,465 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:48,465 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:48,465 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:34:48,493 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:34:48,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 269 transitions, 616 flow [2023-01-28 01:34:48,694 INFO L130 PetriNetUnfolder]: 284/1493 cut-off events. [2023-01-28 01:34:48,694 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:34:48,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 1493 events. 284/1493 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7926 event pairs, 72 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 997. Up to 192 conditions per place. [2023-01-28 01:34:48,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 269 transitions, 616 flow [2023-01-28 01:34:48,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 269 transitions, 616 flow [2023-01-28 01:34:48,713 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:48,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 269 transitions, 616 flow [2023-01-28 01:34:48,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 269 transitions, 616 flow [2023-01-28 01:34:48,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 269 transitions, 616 flow [2023-01-28 01:34:48,863 INFO L130 PetriNetUnfolder]: 284/1493 cut-off events. [2023-01-28 01:34:48,864 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:34:48,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 1493 events. 284/1493 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7926 event pairs, 72 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 997. Up to 192 conditions per place. [2023-01-28 01:34:48,917 INFO L119 LiptonReduction]: Number of co-enabled transitions 43512 [2023-01-28 01:34:51,410 INFO L134 LiptonReduction]: Checked pairs total: 125815 [2023-01-28 01:34:51,410 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-01-28 01:34:51,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:51,414 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:51,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:51,431 INFO L130 PetriNetUnfolder]: 71/262 cut-off events. [2023-01-28 01:34:51,431 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:34:51,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:51,431 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:34:51,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:51,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1887297488, now seen corresponding path program 1 times [2023-01-28 01:34:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:51,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115835988] [2023-01-28 01:34:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:51,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:51,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:51,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:51,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:51,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:34:51,492 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:51,497 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:51,497 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:51,497 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:34:51,532 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:34:51,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 299 transitions, 696 flow [2023-01-28 01:34:51,865 INFO L130 PetriNetUnfolder]: 554/2648 cut-off events. [2023-01-28 01:34:51,865 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:34:51,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 2648 events. 554/2648 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16986 event pairs, 201 based on Foata normal form. 0/2278 useless extension candidates. Maximal degree in co-relation 1711. Up to 448 conditions per place. [2023-01-28 01:34:51,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 299 transitions, 696 flow [2023-01-28 01:34:51,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 299 transitions, 696 flow [2023-01-28 01:34:51,920 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:51,920 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 299 transitions, 696 flow [2023-01-28 01:34:51,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 299 transitions, 696 flow [2023-01-28 01:34:51,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 299 transitions, 696 flow [2023-01-28 01:34:52,243 INFO L130 PetriNetUnfolder]: 554/2648 cut-off events. [2023-01-28 01:34:52,244 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:34:52,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 2648 events. 554/2648 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16986 event pairs, 201 based on Foata normal form. 0/2278 useless extension candidates. Maximal degree in co-relation 1711. Up to 448 conditions per place. [2023-01-28 01:34:52,325 INFO L119 LiptonReduction]: Number of co-enabled transitions 56840 [2023-01-28 01:34:54,854 INFO L134 LiptonReduction]: Checked pairs total: 168356 [2023-01-28 01:34:54,854 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-01-28 01:34:54,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:54,856 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:54,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:54,875 INFO L130 PetriNetUnfolder]: 91/341 cut-off events. [2023-01-28 01:34:54,875 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:34:54,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:54,876 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:34:54,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:54,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1447277913, now seen corresponding path program 1 times [2023-01-28 01:34:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:54,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33237710] [2023-01-28 01:34:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:54,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:54,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:54,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:54,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:54,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:34:54,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:54,902 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:54,902 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:54,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:34:54,919 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:34:54,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 329 transitions, 778 flow [2023-01-28 01:34:55,587 INFO L130 PetriNetUnfolder]: 1144/4955 cut-off events. [2023-01-28 01:34:55,588 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:34:55,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 4955 events. 1144/4955 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 37983 event pairs, 522 based on Foata normal form. 0/4314 useless extension candidates. Maximal degree in co-relation 3130. Up to 1024 conditions per place. [2023-01-28 01:34:55,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 329 transitions, 778 flow [2023-01-28 01:34:55,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 329 transitions, 778 flow [2023-01-28 01:34:55,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:55,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 329 transitions, 778 flow [2023-01-28 01:34:55,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 329 transitions, 778 flow [2023-01-28 01:34:55,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 329 transitions, 778 flow [2023-01-28 01:34:56,344 INFO L130 PetriNetUnfolder]: 1144/4955 cut-off events. [2023-01-28 01:34:56,344 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:34:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 4955 events. 1144/4955 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 37983 event pairs, 522 based on Foata normal form. 0/4314 useless extension candidates. Maximal degree in co-relation 3130. Up to 1024 conditions per place. [2023-01-28 01:34:56,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 71904 [2023-01-28 01:34:59,058 INFO L134 LiptonReduction]: Checked pairs total: 239779 [2023-01-28 01:34:59,058 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-01-28 01:34:59,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:59,059 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:59,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:59,087 INFO L130 PetriNetUnfolder]: 124/444 cut-off events. [2023-01-28 01:34:59,087 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:34:59,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:59,087 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:34:59,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:59,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1527056841, now seen corresponding path program 1 times [2023-01-28 01:34:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:59,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272434740] [2023-01-28 01:34:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:59,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:59,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:59,113 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:59,113 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:59,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:34:59,113 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:59,114 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:59,114 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:59,114 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:34:59,130 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:34:59,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 359 transitions, 862 flow [2023-01-28 01:35:00,970 INFO L130 PetriNetUnfolder]: 2438/9630 cut-off events. [2023-01-28 01:35:00,970 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:35:01,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12007 conditions, 9630 events. 2438/9630 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86304 event pairs, 1291 based on Foata normal form. 0/8462 useless extension candidates. Maximal degree in co-relation 6022. Up to 2304 conditions per place. [2023-01-28 01:35:01,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 359 transitions, 862 flow [2023-01-28 01:35:01,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 359 transitions, 862 flow [2023-01-28 01:35:01,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:01,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 359 transitions, 862 flow [2023-01-28 01:35:01,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 359 transitions, 862 flow [2023-01-28 01:35:01,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 359 transitions, 862 flow [2023-01-28 01:35:02,844 INFO L130 PetriNetUnfolder]: 2438/9630 cut-off events. [2023-01-28 01:35:02,844 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:35:02,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12007 conditions, 9630 events. 2438/9630 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86304 event pairs, 1291 based on Foata normal form. 0/8462 useless extension candidates. Maximal degree in co-relation 6022. Up to 2304 conditions per place. [2023-01-28 01:35:03,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-01-28 01:35:05,944 INFO L134 LiptonReduction]: Checked pairs total: 300287 [2023-01-28 01:35:05,944 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-01-28 01:35:05,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:05,945 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:05,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:06,003 INFO L130 PetriNetUnfolder]: 171/589 cut-off events. [2023-01-28 01:35:06,003 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:35:06,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:06,003 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:06,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:06,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1579751107, now seen corresponding path program 1 times [2023-01-28 01:35:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152189033] [2023-01-28 01:35:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:06,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:06,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:06,038 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:06,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:06,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:35:06,038 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:06,041 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:06,041 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:06,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:35:06,064 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:35:06,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 389 transitions, 948 flow [2023-01-28 01:35:09,875 INFO L130 PetriNetUnfolder]: 5268/19169 cut-off events. [2023-01-28 01:35:09,876 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:35:10,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 19169 events. 5268/19169 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195437 event pairs, 3084 based on Foata normal form. 0/16962 useless extension candidates. Maximal degree in co-relation 11987. Up to 5120 conditions per place. [2023-01-28 01:35:10,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 389 transitions, 948 flow [2023-01-28 01:35:10,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 389 transitions, 948 flow [2023-01-28 01:35:10,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:10,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 389 transitions, 948 flow [2023-01-28 01:35:10,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 389 transitions, 948 flow [2023-01-28 01:35:10,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 389 transitions, 948 flow [2023-01-28 01:35:13,981 INFO L130 PetriNetUnfolder]: 5268/19169 cut-off events. [2023-01-28 01:35:13,981 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:35:14,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 19169 events. 5268/19169 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195437 event pairs, 3084 based on Foata normal form. 0/16962 useless extension candidates. Maximal degree in co-relation 11987. Up to 5120 conditions per place. [2023-01-28 01:35:14,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 107240 [2023-01-28 01:35:18,084 INFO L134 LiptonReduction]: Checked pairs total: 328173 [2023-01-28 01:35:18,084 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-01-28 01:35:18,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:18,086 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:18,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:18,162 INFO L130 PetriNetUnfolder]: 247/824 cut-off events. [2023-01-28 01:35:18,163 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:35:18,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:18,163 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:18,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:18,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1269829589, now seen corresponding path program 1 times [2023-01-28 01:35:18,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:18,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284407247] [2023-01-28 01:35:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:18,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:18,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:18,204 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:18,204 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:35:18,205 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:18,205 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:18,205 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:18,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:35:18,229 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:35:18,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 419 transitions, 1036 flow [2023-01-28 01:35:26,468 INFO L130 PetriNetUnfolder]: 11426/38692 cut-off events. [2023-01-28 01:35:26,468 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:35:27,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50056 conditions, 38692 events. 11426/38692 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438900 event pairs, 7181 based on Foata normal form. 0/34422 useless extension candidates. Maximal degree in co-relation 24353. Up to 11264 conditions per place. [2023-01-28 01:35:27,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 419 transitions, 1036 flow [2023-01-28 01:35:27,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 419 transitions, 1036 flow [2023-01-28 01:35:27,694 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:27,694 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 419 transitions, 1036 flow [2023-01-28 01:35:27,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 419 transitions, 1036 flow [2023-01-28 01:35:27,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 419 transitions, 1036 flow [2023-01-28 01:35:36,139 INFO L130 PetriNetUnfolder]: 11426/38692 cut-off events. [2023-01-28 01:35:36,139 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:35:36,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50056 conditions, 38692 events. 11426/38692 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438900 event pairs, 7181 based on Foata normal form. 0/34422 useless extension candidates. Maximal degree in co-relation 24353. Up to 11264 conditions per place. [2023-01-28 01:35:38,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 127512 [2023-01-28 01:35:41,022 INFO L134 LiptonReduction]: Checked pairs total: 392949 [2023-01-28 01:35:41,023 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-01-28 01:35:41,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:41,024 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:41,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:41,129 INFO L130 PetriNetUnfolder]: 363/1121 cut-off events. [2023-01-28 01:35:41,129 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:35:41,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:41,130 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:41,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:41,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1416824931, now seen corresponding path program 1 times [2023-01-28 01:35:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744621200] [2023-01-28 01:35:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:41,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:41,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:41,184 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:41,184 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:35:41,184 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:41,185 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:41,185 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:41,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:35:41,214 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:35:41,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 449 transitions, 1126 flow [2023-01-28 01:36:00,086 INFO L130 PetriNetUnfolder]: 24752/78695 cut-off events. [2023-01-28 01:36:00,086 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:36:02,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103386 conditions, 78695 events. 24752/78695 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978536 event pairs, 16398 based on Foata normal form. 0/70314 useless extension candidates. Maximal degree in co-relation 50032. Up to 24576 conditions per place. [2023-01-28 01:36:02,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 449 transitions, 1126 flow [2023-01-28 01:36:04,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 449 transitions, 1126 flow [2023-01-28 01:36:04,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:36:04,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 382 places, 449 transitions, 1126 flow [2023-01-28 01:36:04,117 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 382 places, 449 transitions, 1126 flow [2023-01-28 01:36:04,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 449 transitions, 1126 flow [2023-01-28 01:36:23,161 INFO L130 PetriNetUnfolder]: 24752/78695 cut-off events. [2023-01-28 01:36:23,161 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:36:25,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103386 conditions, 78695 events. 24752/78695 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978536 event pairs, 16398 based on Foata normal form. 0/70314 useless extension candidates. Maximal degree in co-relation 50032. Up to 24576 conditions per place. [2023-01-28 01:36:31,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 149520 [2023-01-28 01:36:34,316 INFO L134 LiptonReduction]: Checked pairs total: 458781 [2023-01-28 01:36:34,316 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-01-28 01:36:34,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:36:34,318 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:36:34,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:36:34,453 INFO L130 PetriNetUnfolder]: 575/1659 cut-off events. [2023-01-28 01:36:34,453 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:36:34,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:36:34,454 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 01:36:34,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:36:34,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:36:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1826489402, now seen corresponding path program 1 times [2023-01-28 01:36:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:36:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805481851] [2023-01-28 01:36:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:36:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:36:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:36:34,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:36:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:36:34,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:36:34,485 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:36:34,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:36:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:36:34,485 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:36:34,486 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:36:34,486 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:36:34,486 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:36:34,509 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:36:34,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 479 transitions, 1218 flow [2023-01-28 01:37:14,279 INFO L130 PetriNetUnfolder]: 53438/160682 cut-off events. [2023-01-28 01:37:14,280 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:37:20,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214061 conditions, 160682 events. 53438/160682 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2163638 event pairs, 36879 based on Foata normal form. 0/144094 useless extension candidates. Maximal degree in co-relation 103360. Up to 53248 conditions per place. [2023-01-28 01:37:20,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 479 transitions, 1218 flow [2023-01-28 01:37:24,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 479 transitions, 1218 flow [2023-01-28 01:37:24,263 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:37:24,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 407 places, 479 transitions, 1218 flow [2023-01-28 01:37:24,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 407 places, 479 transitions, 1218 flow [2023-01-28 01:37:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 479 transitions, 1218 flow [2023-01-28 01:38:05,425 INFO L130 PetriNetUnfolder]: 53438/160682 cut-off events. [2023-01-28 01:38:05,425 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:38:11,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214061 conditions, 160682 events. 53438/160682 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2163638 event pairs, 36879 based on Foata normal form. 0/144094 useless extension candidates. Maximal degree in co-relation 103360. Up to 53248 conditions per place. [2023-01-28 01:38:27,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 173264 [2023-01-28 01:38:30,888 INFO L134 LiptonReduction]: Checked pairs total: 536420 [2023-01-28 01:38:30,888 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-01-28 01:38:30,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:38:30,895 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;@56668a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:38:30,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:38:31,173 INFO L130 PetriNetUnfolder]: 940/2504 cut-off events. [2023-01-28 01:38:31,173 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:38:31,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:38:31,173 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 01:38:31,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:38:31,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:38:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 515426409, now seen corresponding path program 1 times [2023-01-28 01:38:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:38:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508716933] [2023-01-28 01:38:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:38:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:38:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:31,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:38:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:38:31,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:38:31,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:38:31,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:38:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:38:31,258 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:38:31,258 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:38:31,258 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:38:31,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:38:31,280 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:38:31,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 509 transitions, 1312 flow