/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_07-cond_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:34:49,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:34:49,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:34:49,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:34:49,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:34:49,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:34:49,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:34:49,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:34:49,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:34:49,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:34:49,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:34:49,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:34:49,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:34:49,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:34:49,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:34:49,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:34:49,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:34:49,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:34:49,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:34:49,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:34:49,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:34:49,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:34:49,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:34:49,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:34:49,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:34:49,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:34:49,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:34:49,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:34:49,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:34:49,696 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:34:49,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:34:49,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:34:49,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:34:49,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:34:49,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:34:49,699 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:34:49,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:34:49,699 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:34:49,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:34:49,700 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:34:49,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:34:49,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:34:49,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:34:49,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:34:49,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:34:49,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:34:49,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:34:49,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:34:49,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:34:49,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:34:49,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:34:49,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:34:49,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:34:49,702 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:34:49,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:34:49,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:34:49,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:34:49,948 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:34:49,948 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:34:49,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-01-28 01:34:51,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:34:51,361 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:34:51,362 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-01-28 01:34:51,385 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd4c5b93/09b0c3740cc542f6b297c487d966fd7c/FLAGcbfe93a66 [2023-01-28 01:34:51,680 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd4c5b93/09b0c3740cc542f6b297c487d966fd7c [2023-01-28 01:34:51,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:34:51,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:34:51,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:34:51,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:34:51,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:34:51,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:34:51" (1/1) ... [2023-01-28 01:34:51,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@feb7d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:51, skipping insertion in model container [2023-01-28 01:34:51,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:34:51" (1/1) ... [2023-01-28 01:34:51,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:34:51,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:34:52,016 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_07-cond_racing2.i[41322,41335] [2023-01-28 01:34:52,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:34:52,041 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:34:52,077 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_07-cond_racing2.i[41322,41335] [2023-01-28 01:34:52,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:34:52,143 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:34:52,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52 WrapperNode [2023-01-28 01:34:52,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:34:52,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:34:52,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:34:52,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:34:52,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,210 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-01-28 01:34:52,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:34:52,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:34:52,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:34:52,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:34:52,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:34:52,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:34:52,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:34:52,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:34:52,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (1/1) ... [2023-01-28 01:34:52,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:34:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:34:52,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 01:34:52,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 01:34:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:34:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:34:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:34:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:34:52,327 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:34:52,446 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:34:52,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:34:52,670 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:34:52,677 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:34:52,677 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:34:52,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:34:52 BoogieIcfgContainer [2023-01-28 01:34:52,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:34:52,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:34:52,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:34:52,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:34:52,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:34:51" (1/3) ... [2023-01-28 01:34:52,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a64f609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:34:52, skipping insertion in model container [2023-01-28 01:34:52,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:34:52" (2/3) ... [2023-01-28 01:34:52,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a64f609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:34:52, skipping insertion in model container [2023-01-28 01:34:52,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:34:52" (3/3) ... [2023-01-28 01:34:52,685 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-01-28 01:34:52,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:34:52,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:34:52,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:34:52,752 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:34:52,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 121 transitions, 250 flow [2023-01-28 01:34:52,846 INFO L130 PetriNetUnfolder]: 23/163 cut-off events. [2023-01-28 01:34:52,846 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:34:52,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 23/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-01-28 01:34:52,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 121 transitions, 250 flow [2023-01-28 01:34:52,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 237 flow [2023-01-28 01:34:52,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:52,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 116 transitions, 237 flow [2023-01-28 01:34:52,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 116 transitions, 237 flow [2023-01-28 01:34:52,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 116 transitions, 237 flow [2023-01-28 01:34:52,940 INFO L130 PetriNetUnfolder]: 22/158 cut-off events. [2023-01-28 01:34:52,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:34:52,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 22/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-01-28 01:34:52,944 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-01-28 01:34:56,136 INFO L134 LiptonReduction]: Checked pairs total: 4289 [2023-01-28 01:34:56,136 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-01-28 01:34:56,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:56,154 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:56,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:56,160 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-01-28 01:34:56,160 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:34:56,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:56,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:34:56,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:56,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 950607665, now seen corresponding path program 1 times [2023-01-28 01:34:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108005894] [2023-01-28 01:34:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:56,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:56,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:56,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:56,379 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:34:56,381 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:56,390 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:56,391 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:56,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:34:56,424 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:34:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 151 transitions, 320 flow [2023-01-28 01:34:56,482 INFO L130 PetriNetUnfolder]: 40/259 cut-off events. [2023-01-28 01:34:56,483 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:34:56,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 40/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2023-01-28 01:34:56,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 151 transitions, 320 flow [2023-01-28 01:34:56,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 151 transitions, 320 flow [2023-01-28 01:34:56,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:56,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 151 transitions, 320 flow [2023-01-28 01:34:56,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 151 transitions, 320 flow [2023-01-28 01:34:56,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 151 transitions, 320 flow [2023-01-28 01:34:56,520 INFO L130 PetriNetUnfolder]: 40/259 cut-off events. [2023-01-28 01:34:56,521 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:34:56,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 40/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2023-01-28 01:34:56,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-01-28 01:34:59,427 INFO L134 LiptonReduction]: Checked pairs total: 19419 [2023-01-28 01:34:59,427 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-01-28 01:34:59,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:59,430 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:59,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:34:59,435 INFO L130 PetriNetUnfolder]: 17/66 cut-off events. [2023-01-28 01:34:59,435 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:34:59,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:59,436 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:34:59,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:59,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1552769436, now seen corresponding path program 1 times [2023-01-28 01:34:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519302416] [2023-01-28 01:34:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:59,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:59,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:59,489 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:59,490 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:34:59,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:34:59,490 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:34:59,490 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:34:59,491 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:34:59,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:34:59,515 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:34:59,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 181 transitions, 392 flow [2023-01-28 01:34:59,566 INFO L130 PetriNetUnfolder]: 62/386 cut-off events. [2023-01-28 01:34:59,567 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:34:59,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 386 events. 62/386 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-01-28 01:34:59,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 181 transitions, 392 flow [2023-01-28 01:34:59,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 181 transitions, 392 flow [2023-01-28 01:34:59,573 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:34:59,573 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 181 transitions, 392 flow [2023-01-28 01:34:59,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 181 transitions, 392 flow [2023-01-28 01:34:59,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 181 transitions, 392 flow [2023-01-28 01:34:59,615 INFO L130 PetriNetUnfolder]: 62/386 cut-off events. [2023-01-28 01:34:59,620 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:34:59,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 386 events. 62/386 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-01-28 01:34:59,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 13944 [2023-01-28 01:35:02,316 INFO L134 LiptonReduction]: Checked pairs total: 34795 [2023-01-28 01:35:02,316 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-01-28 01:35:02,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:02,319 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:02,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:02,326 INFO L130 PetriNetUnfolder]: 26/103 cut-off events. [2023-01-28 01:35:02,327 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:35:02,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:02,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:35:02,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:02,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1306786674, now seen corresponding path program 1 times [2023-01-28 01:35:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:02,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487393623] [2023-01-28 01:35:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:02,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:02,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:02,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:02,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:02,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:35:02,404 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:02,405 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:02,405 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:02,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:35:02,427 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:35:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 211 transitions, 466 flow [2023-01-28 01:35:02,492 INFO L130 PetriNetUnfolder]: 96/577 cut-off events. [2023-01-28 01:35:02,492 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:35:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 577 events. 96/577 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2109 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2023-01-28 01:35:02,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 211 transitions, 466 flow [2023-01-28 01:35:02,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 211 transitions, 466 flow [2023-01-28 01:35:02,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:02,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 211 transitions, 466 flow [2023-01-28 01:35:02,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 211 transitions, 466 flow [2023-01-28 01:35:02,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 211 transitions, 466 flow [2023-01-28 01:35:02,560 INFO L130 PetriNetUnfolder]: 96/577 cut-off events. [2023-01-28 01:35:02,560 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:35:02,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 577 events. 96/577 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2109 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2023-01-28 01:35:02,583 INFO L119 LiptonReduction]: Number of co-enabled transitions 22064 [2023-01-28 01:35:05,403 INFO L134 LiptonReduction]: Checked pairs total: 57997 [2023-01-28 01:35:05,403 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-01-28 01:35:05,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:05,406 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:05,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:05,416 INFO L130 PetriNetUnfolder]: 36/143 cut-off events. [2023-01-28 01:35:05,416 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:35:05,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:05,417 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:05,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:05,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash 988704650, now seen corresponding path program 1 times [2023-01-28 01:35:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040589032] [2023-01-28 01:35:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:05,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:05,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:05,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:05,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:35:05,463 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:05,463 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:05,464 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:05,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:35:05,481 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:35:05,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 241 transitions, 542 flow [2023-01-28 01:35:05,587 INFO L130 PetriNetUnfolder]: 158/900 cut-off events. [2023-01-28 01:35:05,587 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:35:05,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 158/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3855 event pairs, 23 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 622. Up to 80 conditions per place. [2023-01-28 01:35:05,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 241 transitions, 542 flow [2023-01-28 01:35:05,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 241 transitions, 542 flow [2023-01-28 01:35:05,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:05,607 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 241 transitions, 542 flow [2023-01-28 01:35:05,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 241 transitions, 542 flow [2023-01-28 01:35:05,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 241 transitions, 542 flow [2023-01-28 01:35:05,712 INFO L130 PetriNetUnfolder]: 158/900 cut-off events. [2023-01-28 01:35:05,712 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:35:05,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 158/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3855 event pairs, 23 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 622. Up to 80 conditions per place. [2023-01-28 01:35:05,751 INFO L119 LiptonReduction]: Number of co-enabled transitions 31920 [2023-01-28 01:35:08,575 INFO L134 LiptonReduction]: Checked pairs total: 89022 [2023-01-28 01:35:08,575 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-01-28 01:35:08,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:08,578 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:08,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:08,592 INFO L130 PetriNetUnfolder]: 47/186 cut-off events. [2023-01-28 01:35:08,592 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:35:08,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:08,592 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:08,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:08,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1875578010, now seen corresponding path program 1 times [2023-01-28 01:35:08,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:08,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220382551] [2023-01-28 01:35:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:08,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:08,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:08,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:08,658 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:08,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:08,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:35:08,659 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:08,659 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:08,659 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:08,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:35:08,691 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:35:08,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 271 transitions, 620 flow [2023-01-28 01:35:08,916 INFO L130 PetriNetUnfolder]: 284/1495 cut-off events. [2023-01-28 01:35:08,916 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:35:08,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1495 events. 284/1495 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7884 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-01-28 01:35:08,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 271 transitions, 620 flow [2023-01-28 01:35:08,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 271 transitions, 620 flow [2023-01-28 01:35:08,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:08,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 271 transitions, 620 flow [2023-01-28 01:35:08,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 271 transitions, 620 flow [2023-01-28 01:35:08,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 271 transitions, 620 flow [2023-01-28 01:35:09,149 INFO L130 PetriNetUnfolder]: 284/1495 cut-off events. [2023-01-28 01:35:09,149 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:35:09,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1495 events. 284/1495 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7884 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-01-28 01:35:09,224 INFO L119 LiptonReduction]: Number of co-enabled transitions 43512 [2023-01-28 01:35:12,076 INFO L134 LiptonReduction]: Checked pairs total: 124911 [2023-01-28 01:35:12,077 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-01-28 01:35:12,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:12,079 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:12,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:12,100 INFO L130 PetriNetUnfolder]: 71/262 cut-off events. [2023-01-28 01:35:12,100 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:35:12,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:12,101 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:12,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:12,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash -884379108, now seen corresponding path program 1 times [2023-01-28 01:35:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033722495] [2023-01-28 01:35:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:12,123 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:12,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:12,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:12,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:12,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:35:12,145 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:12,146 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:12,146 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:12,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:35:12,166 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:35:12,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 301 transitions, 700 flow [2023-01-28 01:35:12,613 INFO L130 PetriNetUnfolder]: 554/2650 cut-off events. [2023-01-28 01:35:12,613 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:35:12,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 2650 events. 554/2650 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17034 event pairs, 201 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 1713. Up to 448 conditions per place. [2023-01-28 01:35:12,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 301 transitions, 700 flow [2023-01-28 01:35:12,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 301 transitions, 700 flow [2023-01-28 01:35:12,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:12,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 301 transitions, 700 flow [2023-01-28 01:35:12,683 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 301 transitions, 700 flow [2023-01-28 01:35:12,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 301 transitions, 700 flow [2023-01-28 01:35:13,102 INFO L130 PetriNetUnfolder]: 554/2650 cut-off events. [2023-01-28 01:35:13,102 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:35:13,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 2650 events. 554/2650 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17034 event pairs, 201 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 1713. Up to 448 conditions per place. [2023-01-28 01:35:13,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 56840 [2023-01-28 01:35:16,222 INFO L134 LiptonReduction]: Checked pairs total: 185972 [2023-01-28 01:35:16,222 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-01-28 01:35:16,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:16,224 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:16,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:16,245 INFO L130 PetriNetUnfolder]: 84/327 cut-off events. [2023-01-28 01:35:16,245 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:35:16,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:16,245 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:16,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:16,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1081819086, now seen corresponding path program 1 times [2023-01-28 01:35:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846711070] [2023-01-28 01:35:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:16,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:16,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:16,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:16,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:35:16,335 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:16,336 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:16,336 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:16,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:35:16,364 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:35:16,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 331 transitions, 782 flow [2023-01-28 01:35:17,342 INFO L130 PetriNetUnfolder]: 1144/4957 cut-off events. [2023-01-28 01:35:17,342 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:35:17,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6042 conditions, 4957 events. 1144/4957 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38099 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3132. Up to 1024 conditions per place. [2023-01-28 01:35:17,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 331 transitions, 782 flow [2023-01-28 01:35:17,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 331 transitions, 782 flow [2023-01-28 01:35:17,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:17,515 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 331 transitions, 782 flow [2023-01-28 01:35:17,515 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 331 transitions, 782 flow [2023-01-28 01:35:17,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 331 transitions, 782 flow [2023-01-28 01:35:18,548 INFO L130 PetriNetUnfolder]: 1144/4957 cut-off events. [2023-01-28 01:35:18,548 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:35:18,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6042 conditions, 4957 events. 1144/4957 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38099 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3132. Up to 1024 conditions per place. [2023-01-28 01:35:18,742 INFO L119 LiptonReduction]: Number of co-enabled transitions 71904 [2023-01-28 01:35:21,970 INFO L134 LiptonReduction]: Checked pairs total: 239779 [2023-01-28 01:35:21,970 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-01-28 01:35:21,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:21,972 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:21,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:22,005 INFO L130 PetriNetUnfolder]: 124/444 cut-off events. [2023-01-28 01:35:22,006 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:35:22,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:22,006 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:22,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:22,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 55504050, now seen corresponding path program 1 times [2023-01-28 01:35:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274303344] [2023-01-28 01:35:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:22,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:22,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:22,049 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:22,049 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:22,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:35:22,049 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:22,050 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:22,050 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:22,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:35:22,074 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:35:22,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 361 transitions, 866 flow [2023-01-28 01:35:23,868 INFO L130 PetriNetUnfolder]: 2438/9632 cut-off events. [2023-01-28 01:35:23,868 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:35:23,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 9632 events. 2438/9632 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86277 event pairs, 1291 based on Foata normal form. 0/8464 useless extension candidates. Maximal degree in co-relation 6024. Up to 2304 conditions per place. [2023-01-28 01:35:23,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 361 transitions, 866 flow [2023-01-28 01:35:24,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 361 transitions, 866 flow [2023-01-28 01:35:24,057 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:24,057 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 361 transitions, 866 flow [2023-01-28 01:35:24,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 361 transitions, 866 flow [2023-01-28 01:35:24,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 361 transitions, 866 flow [2023-01-28 01:35:25,754 INFO L130 PetriNetUnfolder]: 2438/9632 cut-off events. [2023-01-28 01:35:25,754 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:35:25,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 9632 events. 2438/9632 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86277 event pairs, 1291 based on Foata normal form. 0/8464 useless extension candidates. Maximal degree in co-relation 6024. Up to 2304 conditions per place. [2023-01-28 01:35:26,261 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-01-28 01:35:29,570 INFO L134 LiptonReduction]: Checked pairs total: 269516 [2023-01-28 01:35:29,570 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-01-28 01:35:29,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:29,573 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:29,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:29,629 INFO L130 PetriNetUnfolder]: 171/589 cut-off events. [2023-01-28 01:35:29,629 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:35:29,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:29,629 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:29,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:29,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1490583923, now seen corresponding path program 1 times [2023-01-28 01:35:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573625580] [2023-01-28 01:35:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:29,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:29,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:29,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:29,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:29,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:35:29,674 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:29,674 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:29,674 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:29,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:35:29,704 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:35:29,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 391 transitions, 952 flow [2023-01-28 01:35:33,595 INFO L130 PetriNetUnfolder]: 5268/19171 cut-off events. [2023-01-28 01:35:33,595 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:35:33,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24377 conditions, 19171 events. 5268/19171 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195302 event pairs, 3084 based on Foata normal form. 0/16964 useless extension candidates. Maximal degree in co-relation 11989. Up to 5120 conditions per place. [2023-01-28 01:35:33,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 391 transitions, 952 flow [2023-01-28 01:35:34,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 391 transitions, 952 flow [2023-01-28 01:35:34,043 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:34,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 391 transitions, 952 flow [2023-01-28 01:35:34,043 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 391 transitions, 952 flow [2023-01-28 01:35:34,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 391 transitions, 952 flow [2023-01-28 01:35:37,904 INFO L130 PetriNetUnfolder]: 5268/19171 cut-off events. [2023-01-28 01:35:37,904 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:35:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24377 conditions, 19171 events. 5268/19171 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195302 event pairs, 3084 based on Foata normal form. 0/16964 useless extension candidates. Maximal degree in co-relation 11989. Up to 5120 conditions per place. [2023-01-28 01:35:38,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 107240 [2023-01-28 01:35:42,434 INFO L134 LiptonReduction]: Checked pairs total: 364074 [2023-01-28 01:35:42,434 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-01-28 01:35:42,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:35:42,436 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:35:42,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:35:42,512 INFO L130 PetriNetUnfolder]: 247/824 cut-off events. [2023-01-28 01:35:42,512 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:35:42,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:35:42,512 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:35:42,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:35:42,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:35:42,513 INFO L85 PathProgramCache]: Analyzing trace with hash 307147780, now seen corresponding path program 1 times [2023-01-28 01:35:42,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:35:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181658894] [2023-01-28 01:35:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:35:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:35:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:42,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:35:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:35:42,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:35:42,559 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:35:42,559 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:35:42,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:35:42,559 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:42,560 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:35:42,560 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:42,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:35:42,592 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:35:42,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 421 transitions, 1040 flow [2023-01-28 01:35:51,166 INFO L130 PetriNetUnfolder]: 11426/38694 cut-off events. [2023-01-28 01:35:51,166 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:35:51,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 38694 events. 11426/38694 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438607 event pairs, 7181 based on Foata normal form. 0/34424 useless extension candidates. Maximal degree in co-relation 24355. Up to 11264 conditions per place. [2023-01-28 01:35:51,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 421 transitions, 1040 flow [2023-01-28 01:35:52,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 359 places, 421 transitions, 1040 flow [2023-01-28 01:35:52,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:35:52,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 359 places, 421 transitions, 1040 flow [2023-01-28 01:35:52,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 359 places, 421 transitions, 1040 flow [2023-01-28 01:35:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 421 transitions, 1040 flow [2023-01-28 01:36:01,342 INFO L130 PetriNetUnfolder]: 11426/38694 cut-off events. [2023-01-28 01:36:01,342 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:36:02,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 38694 events. 11426/38694 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438607 event pairs, 7181 based on Foata normal form. 0/34424 useless extension candidates. Maximal degree in co-relation 24355. Up to 11264 conditions per place. [2023-01-28 01:36:03,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 127512 [2023-01-28 01:36:06,988 INFO L134 LiptonReduction]: Checked pairs total: 438027 [2023-01-28 01:36:06,988 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-01-28 01:36:06,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:36:06,990 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:36:06,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:36:07,132 INFO L130 PetriNetUnfolder]: 363/1121 cut-off events. [2023-01-28 01:36:07,132 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:36:07,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:36:07,132 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:36:07,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:36:07,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:36:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2000235877, now seen corresponding path program 1 times [2023-01-28 01:36:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:36:07,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276989836] [2023-01-28 01:36:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:36:07,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:36:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:36:07,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:36:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:36:07,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:36:07,178 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:36:07,179 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:36:07,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:36:07,179 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:36:07,179 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:36:07,180 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:36:07,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:36:07,209 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:36:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 451 transitions, 1130 flow [2023-01-28 01:36:26,719 INFO L130 PetriNetUnfolder]: 24752/78697 cut-off events. [2023-01-28 01:36:26,719 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:36:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103388 conditions, 78697 events. 24752/78697 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978681 event pairs, 16398 based on Foata normal form. 0/70316 useless extension candidates. Maximal degree in co-relation 50034. Up to 24576 conditions per place. [2023-01-28 01:36:29,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 384 places, 451 transitions, 1130 flow [2023-01-28 01:36:30,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 384 places, 451 transitions, 1130 flow [2023-01-28 01:36:30,869 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:36:30,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 384 places, 451 transitions, 1130 flow [2023-01-28 01:36:30,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 384 places, 451 transitions, 1130 flow [2023-01-28 01:36:30,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 451 transitions, 1130 flow [2023-01-28 01:36:51,231 INFO L130 PetriNetUnfolder]: 24752/78697 cut-off events. [2023-01-28 01:36:51,232 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:36:55,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103388 conditions, 78697 events. 24752/78697 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978681 event pairs, 16398 based on Foata normal form. 0/70316 useless extension candidates. Maximal degree in co-relation 50034. Up to 24576 conditions per place. [2023-01-28 01:36:59,804 INFO L119 LiptonReduction]: Number of co-enabled transitions 149520 [2023-01-28 01:37:03,173 INFO L134 LiptonReduction]: Checked pairs total: 460695 [2023-01-28 01:37:03,174 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-01-28 01:37:03,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:37:03,176 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:37:03,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:37:03,326 INFO L130 PetriNetUnfolder]: 587/1683 cut-off events. [2023-01-28 01:37:03,326 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:37:03,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:37:03,327 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 01:37:03,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:37:03,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:37:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1886689706, now seen corresponding path program 1 times [2023-01-28 01:37:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:37:03,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663076740] [2023-01-28 01:37:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:37:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:37:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:37:03,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:37:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:37:03,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:37:03,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:37:03,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:37:03,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:37:03,386 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:37:03,387 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:37:03,387 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:37:03,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:37:03,456 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:37:03,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 481 transitions, 1222 flow [2023-01-28 01:37:46,213 INFO L130 PetriNetUnfolder]: 53438/160684 cut-off events. [2023-01-28 01:37:46,213 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:37:55,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214063 conditions, 160684 events. 53438/160684 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2164095 event pairs, 36879 based on Foata normal form. 0/144096 useless extension candidates. Maximal degree in co-relation 103362. Up to 53248 conditions per place. [2023-01-28 01:37:55,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 481 transitions, 1222 flow [2023-01-28 01:37:58,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 481 transitions, 1222 flow [2023-01-28 01:37:58,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:37:58,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 481 transitions, 1222 flow [2023-01-28 01:37:58,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 481 transitions, 1222 flow [2023-01-28 01:37:58,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 481 transitions, 1222 flow [2023-01-28 01:38:41,535 INFO L130 PetriNetUnfolder]: 53438/160684 cut-off events. [2023-01-28 01:38:41,536 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:38:50,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214063 conditions, 160684 events. 53438/160684 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2164095 event pairs, 36879 based on Foata normal form. 0/144096 useless extension candidates. Maximal degree in co-relation 103362. Up to 53248 conditions per place. [2023-01-28 01:39:05,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 173264 [2023-01-28 01:39:08,927 INFO L134 LiptonReduction]: Checked pairs total: 536928 [2023-01-28 01:39:08,927 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-01-28 01:39:08,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:39:08,929 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;@6c54836c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:39:08,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:39:09,157 INFO L130 PetriNetUnfolder]: 940/2504 cut-off events. [2023-01-28 01:39:09,157 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:39:09,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:39:09,157 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 01:39:09,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:39:09,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:39:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash 944736493, now seen corresponding path program 1 times [2023-01-28 01:39:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:39:09,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534081120] [2023-01-28 01:39:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:39:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:39:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:09,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:39:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:39:09,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:39:09,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:39:09,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:39:09,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:39:09,208 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:39:09,208 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:39:09,209 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:39:09,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:39:09,246 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:39:09,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 511 transitions, 1316 flow