/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_42-trylock2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:48:16,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:48:16,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:48:16,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:48:16,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:48:16,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:48:16,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:48:16,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:48:16,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:48:16,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:48:16,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:48:16,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:48:16,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:48:16,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:48:16,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:48:16,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:48:16,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:48:16,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:48:16,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:48:16,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:48:16,804 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 01:48:16,823 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:48:16,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:48:16,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:48:16,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:48:16,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:48:16,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:48:16,827 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:48:16,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:48:16,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:48:16,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:48:16,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:48:16,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:48:16,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:48:16,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:48:16,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:48:16,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:48:16,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:48:16,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:48:16,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:48:17,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:48:17,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:48:17,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:48:17,029 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:48:17,029 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:48:17,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-01-28 01:48:18,029 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:48:18,214 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:48:18,215 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-01-28 01:48:18,226 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a115cd0/2faeca8be4ae4b4497208240cd8c745d/FLAGe917c6e8f [2023-01-28 01:48:18,238 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a115cd0/2faeca8be4ae4b4497208240cd8c745d [2023-01-28 01:48:18,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:48:18,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:48:18,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:48:18,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:48:18,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:48:18,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44811bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18, skipping insertion in model container [2023-01-28 01:48:18,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:48:18,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:48:18,532 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_42-trylock2_racefree.i[30176,30189] [2023-01-28 01:48:18,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:48:18,568 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:48:18,597 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_42-trylock2_racefree.i[30176,30189] [2023-01-28 01:48:18,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:48:18,638 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:48:18,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18 WrapperNode [2023-01-28 01:48:18,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:48:18,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:48:18,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:48:18,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:48:18,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,678 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2023-01-28 01:48:18,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:48:18,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:48:18,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:48:18,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:48:18,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,717 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:48:18,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:48:18,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:48:18,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:48:18,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (1/1) ... [2023-01-28 01:48:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:48:18,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:48:18,743 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 01:48:18,748 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 01:48:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:48:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:48:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:48:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:48:18,772 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 01:48:18,895 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:48:18,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:48:19,126 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:48:19,131 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:48:19,131 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-01-28 01:48:19,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:48:19 BoogieIcfgContainer [2023-01-28 01:48:19,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:48:19,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:48:19,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:48:19,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:48:19,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:48:18" (1/3) ... [2023-01-28 01:48:19,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d276e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:48:19, skipping insertion in model container [2023-01-28 01:48:19,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:48:18" (2/3) ... [2023-01-28 01:48:19,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d276e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:48:19, skipping insertion in model container [2023-01-28 01:48:19,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:48:19" (3/3) ... [2023-01-28 01:48:19,144 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-01-28 01:48:19,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:48:19,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-01-28 01:48:19,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:48:19,224 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:48:19,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 184 transitions, 376 flow [2023-01-28 01:48:19,368 INFO L130 PetriNetUnfolder]: 45/269 cut-off events. [2023-01-28 01:48:19,368 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:48:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 269 events. 45/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1001 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-01-28 01:48:19,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 184 transitions, 376 flow [2023-01-28 01:48:19,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 179 transitions, 363 flow [2023-01-28 01:48:19,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:19,393 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 179 transitions, 363 flow [2023-01-28 01:48:19,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 179 transitions, 363 flow [2023-01-28 01:48:19,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 179 transitions, 363 flow [2023-01-28 01:48:19,436 INFO L130 PetriNetUnfolder]: 44/264 cut-off events. [2023-01-28 01:48:19,436 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:48:19,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 44/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 985 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-01-28 01:48:19,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 9646 [2023-01-28 01:48:22,206 INFO L134 LiptonReduction]: Checked pairs total: 21000 [2023-01-28 01:48:22,206 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-01-28 01:48:22,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:22,221 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:22,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:22,227 INFO L130 PetriNetUnfolder]: 4/27 cut-off events. [2023-01-28 01:48:22,227 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:48:22,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:22,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:48:22,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:22,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash -560655468, now seen corresponding path program 1 times [2023-01-28 01:48:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448979981] [2023-01-28 01:48:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:22,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:22,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:22,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:22,377 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:22,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:48:22,379 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:22,381 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:22,382 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:22,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:48:22,403 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:48:22,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-01-28 01:48:22,443 INFO L130 PetriNetUnfolder]: 76/433 cut-off events. [2023-01-28 01:48:22,444 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:48:22,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-01-28 01:48:22,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 239 transitions, 496 flow [2023-01-28 01:48:22,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 239 transitions, 496 flow [2023-01-28 01:48:22,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:22,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 239 transitions, 496 flow [2023-01-28 01:48:22,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 239 transitions, 496 flow [2023-01-28 01:48:22,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-01-28 01:48:22,486 INFO L130 PetriNetUnfolder]: 76/433 cut-off events. [2023-01-28 01:48:22,486 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:48:22,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-01-28 01:48:22,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 26076 [2023-01-28 01:48:25,078 INFO L134 LiptonReduction]: Checked pairs total: 81736 [2023-01-28 01:48:25,078 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-01-28 01:48:25,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:25,083 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:25,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:25,092 INFO L130 PetriNetUnfolder]: 31/120 cut-off events. [2023-01-28 01:48:25,092 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 01:48:25,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:25,093 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:48:25,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:25,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash -778084677, now seen corresponding path program 1 times [2023-01-28 01:48:25,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:25,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928666859] [2023-01-28 01:48:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:25,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:25,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:25,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:25,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:25,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:48:25,164 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:25,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:25,164 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:25,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:48:25,186 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:48:25,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 294 transitions, 618 flow [2023-01-28 01:48:25,239 INFO L130 PetriNetUnfolder]: 112/628 cut-off events. [2023-01-28 01:48:25,239 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:48:25,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 628 events. 112/628 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2789 event pairs, 1 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 441. Up to 16 conditions per place. [2023-01-28 01:48:25,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 294 transitions, 618 flow [2023-01-28 01:48:25,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 294 transitions, 618 flow [2023-01-28 01:48:25,249 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:25,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 294 transitions, 618 flow [2023-01-28 01:48:25,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 294 transitions, 618 flow [2023-01-28 01:48:25,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 294 transitions, 618 flow [2023-01-28 01:48:25,307 INFO L130 PetriNetUnfolder]: 112/628 cut-off events. [2023-01-28 01:48:25,307 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:48:25,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 628 events. 112/628 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2789 event pairs, 1 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 441. Up to 16 conditions per place. [2023-01-28 01:48:25,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 48018 [2023-01-28 01:48:28,085 INFO L134 LiptonReduction]: Checked pairs total: 140868 [2023-01-28 01:48:28,085 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-01-28 01:48:28,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:28,087 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:28,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:28,099 INFO L130 PetriNetUnfolder]: 52/187 cut-off events. [2023-01-28 01:48:28,099 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:48:28,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:28,099 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:48:28,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:28,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2086760866, now seen corresponding path program 1 times [2023-01-28 01:48:28,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:28,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129319269] [2023-01-28 01:48:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:28,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:28,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:28,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:28,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:28,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:28,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:48:28,147 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:28,147 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:28,148 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:28,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:48:28,166 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:48:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 349 transitions, 742 flow [2023-01-28 01:48:28,285 INFO L130 PetriNetUnfolder]: 160/887 cut-off events. [2023-01-28 01:48:28,286 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:48:28,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 887 events. 160/887 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4176 event pairs, 6 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 648. Up to 32 conditions per place. [2023-01-28 01:48:28,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 349 transitions, 742 flow [2023-01-28 01:48:28,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 349 transitions, 742 flow [2023-01-28 01:48:28,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:28,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 349 transitions, 742 flow [2023-01-28 01:48:28,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 349 transitions, 742 flow [2023-01-28 01:48:28,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 349 transitions, 742 flow [2023-01-28 01:48:28,387 INFO L130 PetriNetUnfolder]: 160/887 cut-off events. [2023-01-28 01:48:28,387 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:48:28,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 887 events. 160/887 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4176 event pairs, 6 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 648. Up to 32 conditions per place. [2023-01-28 01:48:28,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 75896 [2023-01-28 01:48:31,361 INFO L134 LiptonReduction]: Checked pairs total: 259511 [2023-01-28 01:48:31,361 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-01-28 01:48:31,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:31,363 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:31,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:31,377 INFO L130 PetriNetUnfolder]: 73/259 cut-off events. [2023-01-28 01:48:31,377 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:48:31,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:31,377 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:31,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:31,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1692529136, now seen corresponding path program 1 times [2023-01-28 01:48:31,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:31,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211131359] [2023-01-28 01:48:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:31,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:31,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:31,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:31,407 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:31,407 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:31,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:48:31,407 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:31,408 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:31,408 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:31,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:48:31,423 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:48:31,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 404 transitions, 868 flow [2023-01-28 01:48:31,583 INFO L130 PetriNetUnfolder]: 236/1278 cut-off events. [2023-01-28 01:48:31,583 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:48:31,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 1278 events. 236/1278 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6522 event pairs, 23 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 932. Up to 80 conditions per place. [2023-01-28 01:48:31,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 404 transitions, 868 flow [2023-01-28 01:48:31,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 404 transitions, 868 flow [2023-01-28 01:48:31,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:31,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 404 transitions, 868 flow [2023-01-28 01:48:31,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 404 transitions, 868 flow [2023-01-28 01:48:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 404 transitions, 868 flow [2023-01-28 01:48:31,758 INFO L130 PetriNetUnfolder]: 236/1278 cut-off events. [2023-01-28 01:48:31,758 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:48:31,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 1278 events. 236/1278 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6522 event pairs, 23 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 932. Up to 80 conditions per place. [2023-01-28 01:48:31,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 109710 [2023-01-28 01:48:34,769 INFO L134 LiptonReduction]: Checked pairs total: 345373 [2023-01-28 01:48:34,770 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-01-28 01:48:34,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:34,775 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:34,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:34,804 INFO L130 PetriNetUnfolder]: 103/357 cut-off events. [2023-01-28 01:48:34,805 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 01:48:34,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:34,805 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:34,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:34,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:34,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1093551123, now seen corresponding path program 1 times [2023-01-28 01:48:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128660005] [2023-01-28 01:48:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:34,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:34,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:34,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:34,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:34,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:48:34,859 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:34,859 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:34,859 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:34,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:48:34,888 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:48:34,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 459 transitions, 996 flow [2023-01-28 01:48:35,182 INFO L130 PetriNetUnfolder]: 376/1941 cut-off events. [2023-01-28 01:48:35,182 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:48:35,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1941 events. 376/1941 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11116 event pairs, 72 based on Foata normal form. 0/1601 useless extension candidates. Maximal degree in co-relation 1377. Up to 192 conditions per place. [2023-01-28 01:48:35,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 459 transitions, 996 flow [2023-01-28 01:48:35,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 459 transitions, 996 flow [2023-01-28 01:48:35,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:35,238 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 459 transitions, 996 flow [2023-01-28 01:48:35,239 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 459 transitions, 996 flow [2023-01-28 01:48:35,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 459 transitions, 996 flow [2023-01-28 01:48:35,555 INFO L130 PetriNetUnfolder]: 376/1941 cut-off events. [2023-01-28 01:48:35,555 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:48:35,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1941 events. 376/1941 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11116 event pairs, 72 based on Foata normal form. 0/1601 useless extension candidates. Maximal degree in co-relation 1377. Up to 192 conditions per place. [2023-01-28 01:48:35,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 149460 [2023-01-28 01:48:39,023 INFO L134 LiptonReduction]: Checked pairs total: 537926 [2023-01-28 01:48:39,023 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-01-28 01:48:39,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:39,025 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:39,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:39,055 INFO L130 PetriNetUnfolder]: 123/435 cut-off events. [2023-01-28 01:48:39,055 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-28 01:48:39,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:39,055 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:39,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:39,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1495007919, now seen corresponding path program 1 times [2023-01-28 01:48:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:39,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318512595] [2023-01-28 01:48:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:39,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:39,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:39,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:39,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:39,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:39,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:48:39,115 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:39,115 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:39,115 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:39,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:48:39,142 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:48:39,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 514 transitions, 1126 flow [2023-01-28 01:48:39,698 INFO L130 PetriNetUnfolder]: 660/3164 cut-off events. [2023-01-28 01:48:39,698 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:48:39,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 3164 events. 660/3164 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20880 event pairs, 201 based on Foata normal form. 0/2664 useless extension candidates. Maximal degree in co-relation 2159. Up to 448 conditions per place. [2023-01-28 01:48:39,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 514 transitions, 1126 flow [2023-01-28 01:48:39,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 514 transitions, 1126 flow [2023-01-28 01:48:39,773 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:39,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 422 places, 514 transitions, 1126 flow [2023-01-28 01:48:39,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 422 places, 514 transitions, 1126 flow [2023-01-28 01:48:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 514 transitions, 1126 flow [2023-01-28 01:48:40,340 INFO L130 PetriNetUnfolder]: 660/3164 cut-off events. [2023-01-28 01:48:40,340 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:48:40,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 3164 events. 660/3164 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20880 event pairs, 201 based on Foata normal form. 0/2664 useless extension candidates. Maximal degree in co-relation 2159. Up to 448 conditions per place. [2023-01-28 01:48:40,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 195146 [2023-01-28 01:48:43,816 INFO L134 LiptonReduction]: Checked pairs total: 622519 [2023-01-28 01:48:43,817 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-01-28 01:48:43,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:43,821 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:43,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:43,860 INFO L130 PetriNetUnfolder]: 146/512 cut-off events. [2023-01-28 01:48:43,860 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-28 01:48:43,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:43,860 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:43,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:43,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1312219948, now seen corresponding path program 1 times [2023-01-28 01:48:43,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:43,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954499425] [2023-01-28 01:48:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:43,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:43,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:43,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:43,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:43,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:43,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:48:43,914 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:43,914 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:43,914 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:43,914 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:48:43,936 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:48:43,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 569 transitions, 1258 flow [2023-01-28 01:48:44,931 INFO L130 PetriNetUnfolder]: 1264/5539 cut-off events. [2023-01-28 01:48:44,932 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:48:45,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 5539 events. 1264/5539 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 42560 event pairs, 522 based on Foata normal form. 0/4751 useless extension candidates. Maximal degree in co-relation 3646. Up to 1024 conditions per place. [2023-01-28 01:48:45,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 569 transitions, 1258 flow [2023-01-28 01:48:45,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 569 transitions, 1258 flow [2023-01-28 01:48:45,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:45,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 569 transitions, 1258 flow [2023-01-28 01:48:45,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 569 transitions, 1258 flow [2023-01-28 01:48:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 569 transitions, 1258 flow [2023-01-28 01:48:46,208 INFO L130 PetriNetUnfolder]: 1264/5539 cut-off events. [2023-01-28 01:48:46,209 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:48:46,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 5539 events. 1264/5539 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 42560 event pairs, 522 based on Foata normal form. 0/4751 useless extension candidates. Maximal degree in co-relation 3646. Up to 1024 conditions per place. [2023-01-28 01:48:46,649 INFO L119 LiptonReduction]: Number of co-enabled transitions 246768 [2023-01-28 01:48:50,137 INFO L134 LiptonReduction]: Checked pairs total: 909710 [2023-01-28 01:48:50,137 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-01-28 01:48:50,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:50,138 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:50,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:50,187 INFO L130 PetriNetUnfolder]: 175/615 cut-off events. [2023-01-28 01:48:50,188 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-01-28 01:48:50,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:50,188 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:50,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:50,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1636789828, now seen corresponding path program 1 times [2023-01-28 01:48:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:50,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484783673] [2023-01-28 01:48:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:50,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:50,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:50,228 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:50,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:50,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:48:50,229 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:50,230 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:50,230 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:50,230 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:48:50,258 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:48:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 624 transitions, 1392 flow [2023-01-28 01:48:52,626 INFO L130 PetriNetUnfolder]: 2572/10282 cut-off events. [2023-01-28 01:48:52,626 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:48:52,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 10282 events. 2572/10282 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 91924 event pairs, 1291 based on Foata normal form. 0/8950 useless extension candidates. Maximal degree in co-relation 6606. Up to 2304 conditions per place. [2023-01-28 01:48:52,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 510 places, 624 transitions, 1392 flow [2023-01-28 01:48:52,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 510 places, 624 transitions, 1392 flow [2023-01-28 01:48:52,923 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:52,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 624 transitions, 1392 flow [2023-01-28 01:48:52,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 624 transitions, 1392 flow [2023-01-28 01:48:52,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 624 transitions, 1392 flow [2023-01-28 01:48:55,529 INFO L130 PetriNetUnfolder]: 2572/10282 cut-off events. [2023-01-28 01:48:55,530 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:48:55,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 10282 events. 2572/10282 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 91924 event pairs, 1291 based on Foata normal form. 0/8950 useless extension candidates. Maximal degree in co-relation 6606. Up to 2304 conditions per place. [2023-01-28 01:48:56,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 304326 [2023-01-28 01:49:00,123 INFO L134 LiptonReduction]: Checked pairs total: 1128368 [2023-01-28 01:49:00,123 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-01-28 01:49:00,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:00,125 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:00,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:00,201 INFO L130 PetriNetUnfolder]: 217/755 cut-off events. [2023-01-28 01:49:00,201 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-01-28 01:49:00,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:00,201 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:49:00,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:00,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -781616342, now seen corresponding path program 1 times [2023-01-28 01:49:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717194794] [2023-01-28 01:49:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:00,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:00,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:00,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:00,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:00,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:49:00,259 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:00,260 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:00,260 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:00,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:49:00,304 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:49:00,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 679 transitions, 1528 flow [2023-01-28 01:49:05,728 INFO L130 PetriNetUnfolder]: 5416/19889 cut-off events. [2023-01-28 01:49:05,728 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:49:06,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25095 conditions, 19889 events. 5416/19889 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 203271 event pairs, 3084 based on Foata normal form. 0/17501 useless extension candidates. Maximal degree in co-relation 12639. Up to 5120 conditions per place. [2023-01-28 01:49:06,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 554 places, 679 transitions, 1528 flow [2023-01-28 01:49:06,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 554 places, 679 transitions, 1528 flow [2023-01-28 01:49:06,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:49:06,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 554 places, 679 transitions, 1528 flow [2023-01-28 01:49:06,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 554 places, 679 transitions, 1528 flow [2023-01-28 01:49:06,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 679 transitions, 1528 flow [2023-01-28 01:49:11,923 INFO L130 PetriNetUnfolder]: 5416/19889 cut-off events. [2023-01-28 01:49:11,923 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:49:12,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25095 conditions, 19889 events. 5416/19889 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 203271 event pairs, 3084 based on Foata normal form. 0/17501 useless extension candidates. Maximal degree in co-relation 12639. Up to 5120 conditions per place. [2023-01-28 01:49:13,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 367820 [2023-01-28 01:49:17,412 INFO L134 LiptonReduction]: Checked pairs total: 1233332 [2023-01-28 01:49:17,412 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-01-28 01:49:17,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:17,414 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:17,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:17,506 INFO L130 PetriNetUnfolder]: 270/934 cut-off events. [2023-01-28 01:49:17,507 INFO L131 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2023-01-28 01:49:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:17,507 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:49:17,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:17,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1058289488, now seen corresponding path program 1 times [2023-01-28 01:49:17,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:17,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587210499] [2023-01-28 01:49:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:17,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:17,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:17,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:17,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:17,534 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:49:17,534 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:17,534 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:17,534 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:17,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:49:17,563 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:49:17,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 734 transitions, 1666 flow [2023-01-28 01:49:29,652 INFO L130 PetriNetUnfolder]: 11588/39480 cut-off events. [2023-01-28 01:49:29,652 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:49:30,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50844 conditions, 39480 events. 11588/39480 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 447220 event pairs, 7181 based on Foata normal form. 0/35012 useless extension candidates. Maximal degree in co-relation 25073. Up to 11264 conditions per place. [2023-01-28 01:49:30,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 598 places, 734 transitions, 1666 flow [2023-01-28 01:49:31,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 598 places, 734 transitions, 1666 flow [2023-01-28 01:49:31,533 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:49:31,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 598 places, 734 transitions, 1666 flow [2023-01-28 01:49:31,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 598 places, 734 transitions, 1666 flow [2023-01-28 01:49:31,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 734 transitions, 1666 flow [2023-01-28 01:49:43,629 INFO L130 PetriNetUnfolder]: 11588/39480 cut-off events. [2023-01-28 01:49:43,629 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:49:44,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50844 conditions, 39480 events. 11588/39480 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 447220 event pairs, 7181 based on Foata normal form. 0/35012 useless extension candidates. Maximal degree in co-relation 25073. Up to 11264 conditions per place. [2023-01-28 01:49:47,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 437250 [2023-01-28 01:49:51,421 INFO L134 LiptonReduction]: Checked pairs total: 1466931 [2023-01-28 01:49:51,421 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-01-28 01:49:51,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:51,423 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:51,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:51,530 INFO L130 PetriNetUnfolder]: 302/1053 cut-off events. [2023-01-28 01:49:51,530 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-01-28 01:49:51,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:51,530 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:49:51,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:51,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2036242342, now seen corresponding path program 1 times [2023-01-28 01:49:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:51,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327577420] [2023-01-28 01:49:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:51,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:51,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:51,597 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:51,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:51,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:49:51,597 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:51,598 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:51,598 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:51,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:49:51,628 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:49:51,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 642 places, 789 transitions, 1806 flow [2023-01-28 01:50:19,216 INFO L130 PetriNetUnfolder]: 24928/79551 cut-off events. [2023-01-28 01:50:19,216 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:50:23,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104242 conditions, 79551 events. 24928/79551 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 981727 event pairs, 16398 based on Foata normal form. 0/70955 useless extension candidates. Maximal degree in co-relation 50820. Up to 24576 conditions per place. [2023-01-28 01:50:23,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 642 places, 789 transitions, 1806 flow [2023-01-28 01:50:26,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 642 places, 789 transitions, 1806 flow [2023-01-28 01:50:26,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:26,321 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 642 places, 789 transitions, 1806 flow [2023-01-28 01:50:26,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 642 places, 789 transitions, 1806 flow [2023-01-28 01:50:26,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 642 places, 789 transitions, 1806 flow [2023-01-28 01:50:52,123 INFO L130 PetriNetUnfolder]: 24928/79551 cut-off events. [2023-01-28 01:50:52,123 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:50:55,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104242 conditions, 79551 events. 24928/79551 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 981727 event pairs, 16398 based on Foata normal form. 0/70955 useless extension candidates. Maximal degree in co-relation 50820. Up to 24576 conditions per place. [2023-01-28 01:51:03,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 512616 [2023-01-28 01:51:07,634 INFO L134 LiptonReduction]: Checked pairs total: 1952194 [2023-01-28 01:51:07,635 INFO L136 LiptonReduction]: Total number of compositions: 423 [2023-01-28 01:51:07,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:07,636 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:07,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:07,826 INFO L130 PetriNetUnfolder]: 417/1377 cut-off events. [2023-01-28 01:51:07,826 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2023-01-28 01:51:07,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:07,826 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 01:51:07,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:07,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1000392839, now seen corresponding path program 1 times [2023-01-28 01:51:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458395171] [2023-01-28 01:51:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:07,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:07,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:07,879 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:07,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:51:07,879 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:07,880 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:07,880 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:07,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:51:07,908 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:51:07,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 844 transitions, 1948 flow [2023-01-28 01:52:08,426 INFO L130 PetriNetUnfolder]: 53628/161606 cut-off events. [2023-01-28 01:52:08,427 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:52:19,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214985 conditions, 161606 events. 53628/161606 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 2175091 event pairs, 36879 based on Foata normal form. 0/144786 useless extension candidates. Maximal degree in co-relation 104216. Up to 53248 conditions per place. [2023-01-28 01:52:19,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 686 places, 844 transitions, 1948 flow [2023-01-28 01:52:27,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 686 places, 844 transitions, 1948 flow [2023-01-28 01:52:27,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:52:27,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 686 places, 844 transitions, 1948 flow [2023-01-28 01:52:27,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 686 places, 844 transitions, 1948 flow [2023-01-28 01:52:27,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 844 transitions, 1948 flow [2023-01-28 01:53:26,666 INFO L130 PetriNetUnfolder]: 53628/161606 cut-off events. [2023-01-28 01:53:26,666 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:53:37,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214985 conditions, 161606 events. 53628/161606 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 2175091 event pairs, 36879 based on Foata normal form. 0/144786 useless extension candidates. Maximal degree in co-relation 104216. Up to 53248 conditions per place. [2023-01-28 01:54:09,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 593918 [2023-01-28 01:54:14,543 INFO L134 LiptonReduction]: Checked pairs total: 2022422 [2023-01-28 01:54:14,544 INFO L136 LiptonReduction]: Total number of compositions: 449 [2023-01-28 01:54:14,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:54:14,561 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;@5e5703a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:54:14,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:54:14,843 INFO L130 PetriNetUnfolder]: 538/1711 cut-off events. [2023-01-28 01:54:14,843 INFO L131 PetriNetUnfolder]: For 861/861 co-relation queries the response was YES. [2023-01-28 01:54:14,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:54:14,843 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 01:54:14,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:54:14,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:54:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1435604764, now seen corresponding path program 1 times [2023-01-28 01:54:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:54:14,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425936642] [2023-01-28 01:54:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:54:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:54:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:54:14,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:54:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:54:14,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:54:14,938 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:54:14,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:54:14,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:54:14,938 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:54:14,939 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:54:14,939 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:54:14,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:54:14,985 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:54:14,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 899 transitions, 2092 flow