/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_05-lockfuns_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:31:48,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:31:48,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:31:48,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:31:48,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:31:48,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:31:48,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:31:48,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:31:48,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:31:48,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:31:48,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:31:48,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:31:48,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:31:48,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:31:48,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:31:48,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:31:48,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:31:48,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:31:48,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:31:48,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:31:48,188 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 01:31:48,207 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:31:48,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:31:48,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:31:48,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:31:48,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:31:48,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:31:48,209 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:31:48,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:31:48,209 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:31:48,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:31:48,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:31:48,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:31:48,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:31:48,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:31:48,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:31:48,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:31:48,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:31:48,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:31:48,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:31:48,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:31:48,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:31:48,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:31:48,423 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:31:48,423 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:31:48,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-01-28 01:31:49,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:31:49,530 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:31:49,531 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-01-28 01:31:49,544 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a4291d2/51530e13834547b2ade7f8b28c49c6a2/FLAG43d57b2fa [2023-01-28 01:31:49,937 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a4291d2/51530e13834547b2ade7f8b28c49c6a2 [2023-01-28 01:31:49,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:31:49,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:31:49,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:31:49,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:31:49,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:31:49,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:31:49" (1/1) ... [2023-01-28 01:31:49,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4db081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:49, skipping insertion in model container [2023-01-28 01:31:49,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:31:49" (1/1) ... [2023-01-28 01:31:49,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:31:50,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:31:50,403 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_05-lockfuns_racefree.i[30176,30189] [2023-01-28 01:31:50,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:31:50,459 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:31:50,490 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_05-lockfuns_racefree.i[30176,30189] [2023-01-28 01:31:50,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:31:50,531 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:31:50,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50 WrapperNode [2023-01-28 01:31:50,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:31:50,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:31:50,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:31:50,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:31:50,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,559 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-01-28 01:31:50,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:31:50,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:31:50,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:31:50,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:31:50,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:31:50,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:31:50,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:31:50,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:31:50,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (1/1) ... [2023-01-28 01:31:50,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:31:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:31:50,611 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 01:31:50,614 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 01:31:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:31:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:31:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:31:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:31:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:31:50,638 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 01:31:50,713 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:31:50,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:31:50,915 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:31:50,921 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:31:50,921 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:31:50,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:31:50 BoogieIcfgContainer [2023-01-28 01:31:50,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:31:50,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:31:50,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:31:50,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:31:50,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:31:49" (1/3) ... [2023-01-28 01:31:50,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7b7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:31:50, skipping insertion in model container [2023-01-28 01:31:50,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:50" (2/3) ... [2023-01-28 01:31:50,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7b7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:31:50, skipping insertion in model container [2023-01-28 01:31:50,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:31:50" (3/3) ... [2023-01-28 01:31:50,927 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-01-28 01:31:50,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:31:50,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:31:50,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:31:50,991 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:31:51,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 103 transitions, 214 flow [2023-01-28 01:31:51,051 INFO L130 PetriNetUnfolder]: 17/138 cut-off events. [2023-01-28 01:31:51,051 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:31:51,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 138 events. 17/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 315 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-01-28 01:31:51,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 103 transitions, 214 flow [2023-01-28 01:31:51,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 98 transitions, 201 flow [2023-01-28 01:31:51,059 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:51,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 98 transitions, 201 flow [2023-01-28 01:31:51,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 98 transitions, 201 flow [2023-01-28 01:31:51,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 98 transitions, 201 flow [2023-01-28 01:31:51,086 INFO L130 PetriNetUnfolder]: 16/133 cut-off events. [2023-01-28 01:31:51,087 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:31:51,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 133 events. 16/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-01-28 01:31:51,089 INFO L119 LiptonReduction]: Number of co-enabled transitions 2460 [2023-01-28 01:31:52,842 INFO L134 LiptonReduction]: Checked pairs total: 3508 [2023-01-28 01:31:52,842 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-28 01:31:52,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:52,858 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:52,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:31:52,862 INFO L130 PetriNetUnfolder]: 3/24 cut-off events. [2023-01-28 01:31:52,862 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:31:52,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:52,863 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:31:52,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:52,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -931910374, now seen corresponding path program 1 times [2023-01-28 01:31:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:52,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835200343] [2023-01-28 01:31:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:52,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:53,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:53,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:53,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:31:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:31:53,013 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:53,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:31:53,018 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:53,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:31:53,042 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:31:53,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 135 transitions, 288 flow [2023-01-28 01:31:53,079 INFO L130 PetriNetUnfolder]: 31/229 cut-off events. [2023-01-28 01:31:53,079 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:31:53,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 229 events. 31/229 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 669 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2023-01-28 01:31:53,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 135 transitions, 288 flow [2023-01-28 01:31:53,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 135 transitions, 288 flow [2023-01-28 01:31:53,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:53,082 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 135 transitions, 288 flow [2023-01-28 01:31:53,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 135 transitions, 288 flow [2023-01-28 01:31:53,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 135 transitions, 288 flow [2023-01-28 01:31:53,096 INFO L130 PetriNetUnfolder]: 31/229 cut-off events. [2023-01-28 01:31:53,096 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:31:53,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 229 events. 31/229 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 669 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2023-01-28 01:31:53,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 7380 [2023-01-28 01:31:54,591 INFO L134 LiptonReduction]: Checked pairs total: 15218 [2023-01-28 01:31:54,591 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-01-28 01:31:54,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:54,593 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:54,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:31:54,596 INFO L130 PetriNetUnfolder]: 12/57 cut-off events. [2023-01-28 01:31:54,596 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:31:54,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:54,596 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:31:54,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:54,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash 856034228, now seen corresponding path program 1 times [2023-01-28 01:31:54,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:54,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895176721] [2023-01-28 01:31:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:54,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:54,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:54,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:54,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:31:54,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:31:54,626 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:54,626 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:31:54,626 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:54,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:31:54,638 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:31:54,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 167 transitions, 364 flow [2023-01-28 01:31:54,661 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-01-28 01:31:54,661 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:31:54,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1141 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 237. Up to 16 conditions per place. [2023-01-28 01:31:54,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 167 transitions, 364 flow [2023-01-28 01:31:54,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 167 transitions, 364 flow [2023-01-28 01:31:54,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:54,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 167 transitions, 364 flow [2023-01-28 01:31:54,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 167 transitions, 364 flow [2023-01-28 01:31:54,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 167 transitions, 364 flow [2023-01-28 01:31:54,687 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-01-28 01:31:54,688 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:31:54,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1141 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 237. Up to 16 conditions per place. [2023-01-28 01:31:54,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 14040 [2023-01-28 01:31:56,360 INFO L134 LiptonReduction]: Checked pairs total: 33120 [2023-01-28 01:31:56,360 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-01-28 01:31:56,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:56,362 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:56,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:31:56,367 INFO L130 PetriNetUnfolder]: 24/96 cut-off events. [2023-01-28 01:31:56,367 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:31:56,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:56,367 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:31:56,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:56,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1090998827, now seen corresponding path program 1 times [2023-01-28 01:31:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549593218] [2023-01-28 01:31:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:56,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:56,409 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:56,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:56,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:31:56,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:31:56,411 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:56,411 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:31:56,411 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:56,411 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:31:56,436 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:31:56,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 199 transitions, 442 flow [2023-01-28 01:31:56,485 INFO L130 PetriNetUnfolder]: 81/537 cut-off events. [2023-01-28 01:31:56,485 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:31:56,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 537 events. 81/537 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2013 event pairs, 6 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-01-28 01:31:56,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 199 transitions, 442 flow [2023-01-28 01:31:56,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 199 transitions, 442 flow [2023-01-28 01:31:56,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:56,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 199 transitions, 442 flow [2023-01-28 01:31:56,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 199 transitions, 442 flow [2023-01-28 01:31:56,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 199 transitions, 442 flow [2023-01-28 01:31:56,532 INFO L130 PetriNetUnfolder]: 81/537 cut-off events. [2023-01-28 01:31:56,532 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:31:56,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 537 events. 81/537 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2013 event pairs, 6 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-01-28 01:31:56,550 INFO L119 LiptonReduction]: Number of co-enabled transitions 22680 [2023-01-28 01:31:58,462 INFO L134 LiptonReduction]: Checked pairs total: 56722 [2023-01-28 01:31:58,462 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-01-28 01:31:58,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:58,464 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:58,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:31:58,470 INFO L130 PetriNetUnfolder]: 33/136 cut-off events. [2023-01-28 01:31:58,470 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:31:58,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:58,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:31:58,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:58,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1881173807, now seen corresponding path program 1 times [2023-01-28 01:31:58,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:58,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490517600] [2023-01-28 01:31:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:58,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:58,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:58,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:58,513 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:31:58,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:31:58,513 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:58,513 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:31:58,513 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:58,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:31:58,526 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:31:58,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 522 flow [2023-01-28 01:31:58,595 INFO L130 PetriNetUnfolder]: 140/855 cut-off events. [2023-01-28 01:31:58,596 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:31:58,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 855 events. 140/855 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3770 event pairs, 23 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 582. Up to 80 conditions per place. [2023-01-28 01:31:58,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 231 transitions, 522 flow [2023-01-28 01:31:58,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 231 transitions, 522 flow [2023-01-28 01:31:58,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:58,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 231 transitions, 522 flow [2023-01-28 01:31:58,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 231 transitions, 522 flow [2023-01-28 01:31:58,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 522 flow [2023-01-28 01:31:58,699 INFO L130 PetriNetUnfolder]: 140/855 cut-off events. [2023-01-28 01:31:58,699 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:31:58,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 855 events. 140/855 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3770 event pairs, 23 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 582. Up to 80 conditions per place. [2023-01-28 01:31:58,715 INFO L119 LiptonReduction]: Number of co-enabled transitions 33300 [2023-01-28 01:32:00,585 INFO L134 LiptonReduction]: Checked pairs total: 76432 [2023-01-28 01:32:00,585 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-01-28 01:32:00,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:00,587 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:00,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:00,598 INFO L130 PetriNetUnfolder]: 46/184 cut-off events. [2023-01-28 01:32:00,599 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:32:00,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:00,599 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:00,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:00,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:00,599 INFO L85 PathProgramCache]: Analyzing trace with hash 943123463, now seen corresponding path program 1 times [2023-01-28 01:32:00,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:00,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231335493] [2023-01-28 01:32:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:00,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:00,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:00,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:00,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:32:00,674 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:00,674 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:00,674 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:00,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:32:00,698 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:32:00,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 263 transitions, 604 flow [2023-01-28 01:32:00,866 INFO L130 PetriNetUnfolder]: 263/1445 cut-off events. [2023-01-28 01:32:00,866 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:32:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 1445 events. 263/1445 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7807 event pairs, 72 based on Foata normal form. 0/1239 useless extension candidates. Maximal degree in co-relation 954. Up to 192 conditions per place. [2023-01-28 01:32:00,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 263 transitions, 604 flow [2023-01-28 01:32:00,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 263 transitions, 604 flow [2023-01-28 01:32:00,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:00,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 263 transitions, 604 flow [2023-01-28 01:32:00,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 263 transitions, 604 flow [2023-01-28 01:32:00,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 263 transitions, 604 flow [2023-01-28 01:32:01,022 INFO L130 PetriNetUnfolder]: 263/1445 cut-off events. [2023-01-28 01:32:01,023 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:32:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 1445 events. 263/1445 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7807 event pairs, 72 based on Foata normal form. 0/1239 useless extension candidates. Maximal degree in co-relation 954. Up to 192 conditions per place. [2023-01-28 01:32:01,071 INFO L119 LiptonReduction]: Number of co-enabled transitions 45900 [2023-01-28 01:32:03,029 INFO L134 LiptonReduction]: Checked pairs total: 121371 [2023-01-28 01:32:03,030 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-01-28 01:32:03,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:03,032 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:03,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:03,047 INFO L130 PetriNetUnfolder]: 62/244 cut-off events. [2023-01-28 01:32:03,047 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:32:03,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:03,047 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:03,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:03,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1641837569, now seen corresponding path program 1 times [2023-01-28 01:32:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:03,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558088572] [2023-01-28 01:32:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:03,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:03,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:03,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:03,098 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:03,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:03,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:32:03,099 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:03,101 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:03,101 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:03,101 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:32:03,123 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:32:03,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 295 transitions, 688 flow [2023-01-28 01:32:03,456 INFO L130 PetriNetUnfolder]: 530/2595 cut-off events. [2023-01-28 01:32:03,456 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:32:03,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 2595 events. 530/2595 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16857 event pairs, 201 based on Foata normal form. 0/2249 useless extension candidates. Maximal degree in co-relation 1663. Up to 448 conditions per place. [2023-01-28 01:32:03,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 295 transitions, 688 flow [2023-01-28 01:32:03,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 295 transitions, 688 flow [2023-01-28 01:32:03,494 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:03,494 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 295 transitions, 688 flow [2023-01-28 01:32:03,495 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 295 transitions, 688 flow [2023-01-28 01:32:03,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 295 transitions, 688 flow [2023-01-28 01:32:03,849 INFO L130 PetriNetUnfolder]: 530/2595 cut-off events. [2023-01-28 01:32:03,849 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:32:03,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 2595 events. 530/2595 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16857 event pairs, 201 based on Foata normal form. 0/2249 useless extension candidates. Maximal degree in co-relation 1663. Up to 448 conditions per place. [2023-01-28 01:32:03,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 60480 [2023-01-28 01:32:05,867 INFO L134 LiptonReduction]: Checked pairs total: 166989 [2023-01-28 01:32:05,867 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-01-28 01:32:05,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:05,883 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:05,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:05,925 INFO L130 PetriNetUnfolder]: 85/327 cut-off events. [2023-01-28 01:32:05,925 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:32:05,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:05,925 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:05,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:05,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1886354956, now seen corresponding path program 1 times [2023-01-28 01:32:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379334832] [2023-01-28 01:32:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:05,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:05,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:05,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:05,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:05,991 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:05,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:32:05,991 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:05,992 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:05,992 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:05,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:32:06,015 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:32:06,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 327 transitions, 774 flow [2023-01-28 01:32:06,761 INFO L130 PetriNetUnfolder]: 1117/4897 cut-off events. [2023-01-28 01:32:06,761 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:32:06,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 4897 events. 1117/4897 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 38069 event pairs, 522 based on Foata normal form. 0/4283 useless extension candidates. Maximal degree in co-relation 3077. Up to 1024 conditions per place. [2023-01-28 01:32:06,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 327 transitions, 774 flow [2023-01-28 01:32:06,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 327 transitions, 774 flow [2023-01-28 01:32:06,839 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:06,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 327 transitions, 774 flow [2023-01-28 01:32:06,839 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 327 transitions, 774 flow [2023-01-28 01:32:06,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 327 transitions, 774 flow [2023-01-28 01:32:07,532 INFO L130 PetriNetUnfolder]: 1117/4897 cut-off events. [2023-01-28 01:32:07,532 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:32:07,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 4897 events. 1117/4897 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 38069 event pairs, 522 based on Foata normal form. 0/4283 useless extension candidates. Maximal degree in co-relation 3077. Up to 1024 conditions per place. [2023-01-28 01:32:07,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 77040 [2023-01-28 01:32:09,843 INFO L134 LiptonReduction]: Checked pairs total: 237918 [2023-01-28 01:32:09,844 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-01-28 01:32:09,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:09,846 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:09,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:09,890 INFO L130 PetriNetUnfolder]: 107/416 cut-off events. [2023-01-28 01:32:09,890 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:32:09,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:09,890 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:09,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:09,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -122733573, now seen corresponding path program 1 times [2023-01-28 01:32:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968179436] [2023-01-28 01:32:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:09,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:09,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:09,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:09,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:09,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:32:09,945 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:09,947 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:09,947 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:09,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:32:09,971 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:32:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 359 transitions, 862 flow [2023-01-28 01:32:11,736 INFO L130 PetriNetUnfolder]: 2408/9567 cut-off events. [2023-01-28 01:32:11,737 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:32:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11944 conditions, 9567 events. 2408/9567 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86566 event pairs, 1291 based on Foata normal form. 0/8429 useless extension candidates. Maximal degree in co-relation 5964. Up to 2304 conditions per place. [2023-01-28 01:32:11,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 359 transitions, 862 flow [2023-01-28 01:32:11,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 359 transitions, 862 flow [2023-01-28 01:32:11,901 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:11,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 359 transitions, 862 flow [2023-01-28 01:32:11,901 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 359 transitions, 862 flow [2023-01-28 01:32:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 359 transitions, 862 flow [2023-01-28 01:32:13,671 INFO L130 PetriNetUnfolder]: 2408/9567 cut-off events. [2023-01-28 01:32:13,671 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:32:13,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11944 conditions, 9567 events. 2408/9567 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86566 event pairs, 1291 based on Foata normal form. 0/8429 useless extension candidates. Maximal degree in co-relation 5964. Up to 2304 conditions per place. [2023-01-28 01:32:14,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 95580 [2023-01-28 01:32:16,019 INFO L134 LiptonReduction]: Checked pairs total: 265849 [2023-01-28 01:32:16,020 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-01-28 01:32:16,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:16,023 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:16,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:16,108 INFO L130 PetriNetUnfolder]: 161/585 cut-off events. [2023-01-28 01:32:16,108 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:32:16,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:16,108 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:16,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:16,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -31832382, now seen corresponding path program 1 times [2023-01-28 01:32:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:16,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899197826] [2023-01-28 01:32:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:16,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:16,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:16,170 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:16,170 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:32:16,170 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:16,171 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:16,171 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:16,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:32:16,194 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:32:16,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 391 transitions, 952 flow [2023-01-28 01:32:20,054 INFO L130 PetriNetUnfolder]: 5235/19101 cut-off events. [2023-01-28 01:32:20,054 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:32:20,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24307 conditions, 19101 events. 5235/19101 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 193362 event pairs, 3084 based on Foata normal form. 0/16927 useless extension candidates. Maximal degree in co-relation 11924. Up to 5120 conditions per place. [2023-01-28 01:32:20,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 391 transitions, 952 flow [2023-01-28 01:32:20,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 391 transitions, 952 flow [2023-01-28 01:32:20,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:20,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 391 transitions, 952 flow [2023-01-28 01:32:20,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 391 transitions, 952 flow [2023-01-28 01:32:20,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 391 transitions, 952 flow [2023-01-28 01:32:24,124 INFO L130 PetriNetUnfolder]: 5235/19101 cut-off events. [2023-01-28 01:32:24,124 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:32:24,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24307 conditions, 19101 events. 5235/19101 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 193362 event pairs, 3084 based on Foata normal form. 0/16927 useless extension candidates. Maximal degree in co-relation 11924. Up to 5120 conditions per place. [2023-01-28 01:32:25,175 INFO L119 LiptonReduction]: Number of co-enabled transitions 116100 [2023-01-28 01:32:27,108 INFO L134 LiptonReduction]: Checked pairs total: 330514 [2023-01-28 01:32:27,109 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-01-28 01:32:27,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:27,110 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:27,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:27,242 INFO L130 PetriNetUnfolder]: 234/808 cut-off events. [2023-01-28 01:32:27,242 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:32:27,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:27,242 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:27,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:27,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:27,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1275169012, now seen corresponding path program 1 times [2023-01-28 01:32:27,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:27,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012494580] [2023-01-28 01:32:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:27,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:27,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:27,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:27,305 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:27,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:27,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:32:27,306 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:27,306 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:27,306 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:27,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:32:27,331 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:32:27,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 423 transitions, 1044 flow [2023-01-28 01:32:35,612 INFO L130 PetriNetUnfolder]: 11390/38619 cut-off events. [2023-01-28 01:32:35,612 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:32:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49983 conditions, 38619 events. 11390/38619 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 435449 event pairs, 7181 based on Foata normal form. 0/34385 useless extension candidates. Maximal degree in co-relation 24286. Up to 11264 conditions per place. [2023-01-28 01:32:36,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 364 places, 423 transitions, 1044 flow [2023-01-28 01:32:36,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 423 transitions, 1044 flow [2023-01-28 01:32:36,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:36,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 423 transitions, 1044 flow [2023-01-28 01:32:36,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 423 transitions, 1044 flow [2023-01-28 01:32:36,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 423 transitions, 1044 flow [2023-01-28 01:32:45,072 INFO L130 PetriNetUnfolder]: 11390/38619 cut-off events. [2023-01-28 01:32:45,073 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:32:45,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49983 conditions, 38619 events. 11390/38619 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 435449 event pairs, 7181 based on Foata normal form. 0/34385 useless extension candidates. Maximal degree in co-relation 24286. Up to 11264 conditions per place. [2023-01-28 01:32:47,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 138600 [2023-01-28 01:32:49,694 INFO L134 LiptonReduction]: Checked pairs total: 396894 [2023-01-28 01:32:49,694 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-01-28 01:32:49,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:49,695 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:49,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:32:49,801 INFO L130 PetriNetUnfolder]: 360/1155 cut-off events. [2023-01-28 01:32:49,801 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:32:49,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:49,801 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:49,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:49,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash -292877484, now seen corresponding path program 1 times [2023-01-28 01:32:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792250150] [2023-01-28 01:32:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:49,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:49,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:49,895 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:49,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:32:49,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:32:49,896 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:49,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:32:49,896 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:49,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:32:49,923 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:32:49,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 455 transitions, 1138 flow [2023-01-28 01:33:09,460 INFO L130 PetriNetUnfolder]: 24713/78617 cut-off events. [2023-01-28 01:33:09,461 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:33:12,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103308 conditions, 78617 events. 24713/78617 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 969014 event pairs, 16398 based on Foata normal form. 0/70275 useless extension candidates. Maximal degree in co-relation 49962. Up to 24576 conditions per place. [2023-01-28 01:33:12,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 455 transitions, 1138 flow [2023-01-28 01:33:13,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 455 transitions, 1138 flow [2023-01-28 01:33:13,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:33:13,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 455 transitions, 1138 flow [2023-01-28 01:33:13,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 455 transitions, 1138 flow [2023-01-28 01:33:13,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 455 transitions, 1138 flow [2023-01-28 01:33:34,521 INFO L130 PetriNetUnfolder]: 24713/78617 cut-off events. [2023-01-28 01:33:34,521 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:33:37,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103308 conditions, 78617 events. 24713/78617 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 969014 event pairs, 16398 based on Foata normal form. 0/70275 useless extension candidates. Maximal degree in co-relation 49962. Up to 24576 conditions per place. [2023-01-28 01:33:43,482 INFO L119 LiptonReduction]: Number of co-enabled transitions 163080 [2023-01-28 01:33:46,659 INFO L134 LiptonReduction]: Checked pairs total: 465238 [2023-01-28 01:33:46,659 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-01-28 01:33:46,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:33:46,660 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:33:46,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:33:46,800 INFO L130 PetriNetUnfolder]: 562/1676 cut-off events. [2023-01-28 01:33:46,800 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:33:46,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:33:46,800 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 01:33:46,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:33:46,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:33:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1756300862, now seen corresponding path program 1 times [2023-01-28 01:33:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:33:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494898129] [2023-01-28 01:33:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:33:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:33:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:46,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:33:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:46,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:33:46,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:33:46,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:33:46,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:33:46,834 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:33:46,834 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:33:46,834 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:33:46,834 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:33:46,870 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:33:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 487 transitions, 1234 flow [2023-01-28 01:34:30,058 INFO L130 PetriNetUnfolder]: 53396/160599 cut-off events. [2023-01-28 01:34:30,058 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:34:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213978 conditions, 160599 events. 53396/160599 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 2165922 event pairs, 36879 based on Foata normal form. 0/144053 useless extension candidates. Maximal degree in co-relation 103287. Up to 53248 conditions per place. [2023-01-28 01:34:36,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 487 transitions, 1234 flow [2023-01-28 01:34:40,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 487 transitions, 1234 flow [2023-01-28 01:34:40,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:40,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 487 transitions, 1234 flow [2023-01-28 01:34:40,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 487 transitions, 1234 flow [2023-01-28 01:34:40,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 487 transitions, 1234 flow [2023-01-28 01:35:22,171 INFO L130 PetriNetUnfolder]: 53396/160599 cut-off events. [2023-01-28 01:35:22,171 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:35:28,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213978 conditions, 160599 events. 53396/160599 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 2165922 event pairs, 36879 based on Foata normal form. 0/144053 useless extension candidates. Maximal degree in co-relation 103287. Up to 53248 conditions per place. [2023-01-28 01:35:45,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 189540 [2023-01-28 01:35:48,995 INFO L134 LiptonReduction]: Checked pairs total: 543368 [2023-01-28 01:35:48,996 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-01-28 01:35:48,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:48,997 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;@76da47cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:48,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:49,216 INFO L130 PetriNetUnfolder]: 913/2449 cut-off events. [2023-01-28 01:35:49,217 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:35:49,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:49,217 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 01:35:49,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:49,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash 98163759, now seen corresponding path program 1 times [2023-01-28 01:35:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597205291] [2023-01-28 01:35:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:49,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:49,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:49,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:49,251 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:49,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:49,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:35:49,251 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:49,252 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:49,252 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:49,252 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:35:49,323 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:35:49,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 519 transitions, 1332 flow