/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_21-deref_read_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:40:50,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:40:50,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:40:50,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:40:50,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:40:50,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:40:50,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:40:50,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:40:50,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:40:50,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:40:50,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:40:50,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:40:50,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:40:50,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:40:50,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:40:50,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:40:50,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:40:50,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:40:50,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:40:50,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:40:50,908 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 01:40:50,937 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:40:50,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:40:50,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:40:50,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:40:50,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:40:50,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:40:50,940 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:40:50,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:40:50,940 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:40:50,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:40:50,941 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:40:50,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:40:50,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:40:50,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:40:50,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:40:50,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:40:50,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:40:50,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:40:50,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:40:51,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:40:51,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:40:51,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:40:51,149 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:40:51,150 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:40:51,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-01-28 01:40:52,294 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:40:52,470 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:40:52,471 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-01-28 01:40:52,481 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7210dc1/438307b5aec14addb378d982a7433619/FLAGa73a6c3dd [2023-01-28 01:40:52,492 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7210dc1/438307b5aec14addb378d982a7433619 [2023-01-28 01:40:52,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:40:52,495 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:40:52,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:40:52,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:40:52,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:40:52,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fb830a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52, skipping insertion in model container [2023-01-28 01:40:52,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:40:52,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:40:52,792 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_21-deref_read_racing.i[30176,30189] [2023-01-28 01:40:52,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:40:52,828 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:40:52,863 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_21-deref_read_racing.i[30176,30189] [2023-01-28 01:40:52,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:40:52,896 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:40:52,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52 WrapperNode [2023-01-28 01:40:52,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:40:52,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:40:52,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:40:52,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:40:52,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,939 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-01-28 01:40:52,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:40:52,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:40:52,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:40:52,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:40:52,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:40:52,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:40:52,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:40:52,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:40:52,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (1/1) ... [2023-01-28 01:40:52,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:40:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:40:53,005 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 01:40:53,028 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 01:40:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:40:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:40:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:40:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:40:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:40:53,045 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 01:40:53,219 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:40:53,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:40:53,375 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:40:53,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:40:53,387 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-01-28 01:40:53,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:40:53 BoogieIcfgContainer [2023-01-28 01:40:53,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:40:53,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:40:53,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:40:53,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:40:53,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:40:52" (1/3) ... [2023-01-28 01:40:53,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d41295a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:40:53, skipping insertion in model container [2023-01-28 01:40:53,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:52" (2/3) ... [2023-01-28 01:40:53,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d41295a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:40:53, skipping insertion in model container [2023-01-28 01:40:53,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:40:53" (3/3) ... [2023-01-28 01:40:53,398 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-01-28 01:40:53,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:40:53,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:40:53,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:40:53,474 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:40:53,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 199 flow [2023-01-28 01:40:53,567 INFO L130 PetriNetUnfolder]: 14/125 cut-off events. [2023-01-28 01:40:53,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:40:53,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 14/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-01-28 01:40:53,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 199 flow [2023-01-28 01:40:53,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 199 flow [2023-01-28 01:40:53,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:53,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 97 transitions, 199 flow [2023-01-28 01:40:53,589 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 97 transitions, 199 flow [2023-01-28 01:40:53,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 199 flow [2023-01-28 01:40:53,614 INFO L130 PetriNetUnfolder]: 14/125 cut-off events. [2023-01-28 01:40:53,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:40:53,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 14/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-01-28 01:40:53,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 2176 [2023-01-28 01:40:56,052 INFO L134 LiptonReduction]: Checked pairs total: 3921 [2023-01-28 01:40:56,052 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-01-28 01:40:56,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:56,072 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:56,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:56,077 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2023-01-28 01:40:56,077 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:40:56,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:56,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:40:56,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:56,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:56,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1609564972, now seen corresponding path program 1 times [2023-01-28 01:40:56,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:56,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245701149] [2023-01-28 01:40:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:56,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:56,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:56,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:56,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:56,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:40:56,276 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:56,278 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:56,279 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:56,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:40:56,296 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:40:56,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-01-28 01:40:56,332 INFO L130 PetriNetUnfolder]: 24/191 cut-off events. [2023-01-28 01:40:56,332 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 01:40:56,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-01-28 01:40:56,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 130 transitions, 272 flow [2023-01-28 01:40:56,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 272 flow [2023-01-28 01:40:56,336 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:56,336 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 272 flow [2023-01-28 01:40:56,336 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 272 flow [2023-01-28 01:40:56,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-01-28 01:40:56,363 INFO L130 PetriNetUnfolder]: 24/191 cut-off events. [2023-01-28 01:40:56,364 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 01:40:56,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-01-28 01:40:56,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 6464 [2023-01-28 01:40:58,718 INFO L134 LiptonReduction]: Checked pairs total: 13307 [2023-01-28 01:40:58,718 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-01-28 01:40:58,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:58,721 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:58,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:58,726 INFO L130 PetriNetUnfolder]: 12/51 cut-off events. [2023-01-28 01:40:58,726 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 01:40:58,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:58,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:40:58,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:58,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 687650153, now seen corresponding path program 1 times [2023-01-28 01:40:58,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585533272] [2023-01-28 01:40:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:58,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:58,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:58,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:58,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:58,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:58,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:40:58,775 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:58,776 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:58,776 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:58,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:40:58,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:40:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 163 transitions, 347 flow [2023-01-28 01:40:58,830 INFO L130 PetriNetUnfolder]: 34/257 cut-off events. [2023-01-28 01:40:58,830 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 01:40:58,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 257 events. 34/257 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 734 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-01-28 01:40:58,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 163 transitions, 347 flow [2023-01-28 01:40:58,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 163 transitions, 347 flow [2023-01-28 01:40:58,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:58,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 163 transitions, 347 flow [2023-01-28 01:40:58,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 163 transitions, 347 flow [2023-01-28 01:40:58,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 163 transitions, 347 flow [2023-01-28 01:40:58,866 INFO L130 PetriNetUnfolder]: 34/257 cut-off events. [2023-01-28 01:40:58,872 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 01:40:58,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 257 events. 34/257 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 734 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-01-28 01:40:58,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 12864 [2023-01-28 01:41:01,209 INFO L134 LiptonReduction]: Checked pairs total: 27808 [2023-01-28 01:41:01,209 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-01-28 01:41:01,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:01,212 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:01,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:01,218 INFO L130 PetriNetUnfolder]: 18/75 cut-off events. [2023-01-28 01:41:01,218 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 01:41:01,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:01,219 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:41:01,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:01,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1694388675, now seen corresponding path program 1 times [2023-01-28 01:41:01,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:01,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045373758] [2023-01-28 01:41:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:01,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:01,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:01,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:01,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:41:01,301 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:01,301 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:01,301 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:01,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:41:01,324 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:01,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 196 transitions, 424 flow [2023-01-28 01:41:01,357 INFO L130 PetriNetUnfolder]: 44/323 cut-off events. [2023-01-28 01:41:01,357 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 01:41:01,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 323 events. 44/323 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 978 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 265. Up to 10 conditions per place. [2023-01-28 01:41:01,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 196 transitions, 424 flow [2023-01-28 01:41:01,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 196 transitions, 424 flow [2023-01-28 01:41:01,362 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:01,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 196 transitions, 424 flow [2023-01-28 01:41:01,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 196 transitions, 424 flow [2023-01-28 01:41:01,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 196 transitions, 424 flow [2023-01-28 01:41:01,392 INFO L130 PetriNetUnfolder]: 44/323 cut-off events. [2023-01-28 01:41:01,392 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 01:41:01,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 323 events. 44/323 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 978 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 265. Up to 10 conditions per place. [2023-01-28 01:41:01,407 INFO L119 LiptonReduction]: Number of co-enabled transitions 21376 [2023-01-28 01:41:03,982 INFO L134 LiptonReduction]: Checked pairs total: 49294 [2023-01-28 01:41:03,982 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-01-28 01:41:03,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:03,985 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:03,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:03,994 INFO L130 PetriNetUnfolder]: 28/107 cut-off events. [2023-01-28 01:41:03,995 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 01:41:03,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:03,995 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:03,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:03,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 449457686, now seen corresponding path program 1 times [2023-01-28 01:41:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524865465] [2023-01-28 01:41:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:04,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:04,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:04,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:04,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:04,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:41:04,041 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:04,042 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:04,042 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:04,042 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:41:04,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:04,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 229 transitions, 503 flow [2023-01-28 01:41:04,117 INFO L130 PetriNetUnfolder]: 54/389 cut-off events. [2023-01-28 01:41:04,118 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-28 01:41:04,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 389 events. 54/389 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1207 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 336. Up to 12 conditions per place. [2023-01-28 01:41:04,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 229 transitions, 503 flow [2023-01-28 01:41:04,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 229 transitions, 503 flow [2023-01-28 01:41:04,124 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:04,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 229 transitions, 503 flow [2023-01-28 01:41:04,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 229 transitions, 503 flow [2023-01-28 01:41:04,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 229 transitions, 503 flow [2023-01-28 01:41:04,172 INFO L130 PetriNetUnfolder]: 54/389 cut-off events. [2023-01-28 01:41:04,172 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-28 01:41:04,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 389 events. 54/389 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1207 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 336. Up to 12 conditions per place. [2023-01-28 01:41:04,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 32000 [2023-01-28 01:41:06,703 INFO L134 LiptonReduction]: Checked pairs total: 72192 [2023-01-28 01:41:06,703 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-01-28 01:41:06,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:06,706 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:06,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:06,716 INFO L130 PetriNetUnfolder]: 36/134 cut-off events. [2023-01-28 01:41:06,716 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-28 01:41:06,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:06,716 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:06,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:06,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1273944007, now seen corresponding path program 1 times [2023-01-28 01:41:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525077112] [2023-01-28 01:41:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:06,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:06,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:06,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:06,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:41:06,760 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:06,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:06,761 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:06,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:41:06,784 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:06,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 262 transitions, 584 flow [2023-01-28 01:41:06,837 INFO L130 PetriNetUnfolder]: 64/455 cut-off events. [2023-01-28 01:41:06,838 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 01:41:06,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 64/455 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1445 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 408. Up to 14 conditions per place. [2023-01-28 01:41:06,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 262 transitions, 584 flow [2023-01-28 01:41:06,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 262 transitions, 584 flow [2023-01-28 01:41:06,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:06,847 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 262 transitions, 584 flow [2023-01-28 01:41:06,847 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 262 transitions, 584 flow [2023-01-28 01:41:06,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 262 transitions, 584 flow [2023-01-28 01:41:06,898 INFO L130 PetriNetUnfolder]: 64/455 cut-off events. [2023-01-28 01:41:06,901 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 01:41:06,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 64/455 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1445 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 408. Up to 14 conditions per place. [2023-01-28 01:41:06,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 44736 [2023-01-28 01:41:09,586 INFO L134 LiptonReduction]: Checked pairs total: 103772 [2023-01-28 01:41:09,586 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-01-28 01:41:09,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:09,588 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:09,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:09,601 INFO L130 PetriNetUnfolder]: 44/162 cut-off events. [2023-01-28 01:41:09,601 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 01:41:09,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:09,602 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:09,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:09,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash 227886290, now seen corresponding path program 1 times [2023-01-28 01:41:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842949009] [2023-01-28 01:41:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:09,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:09,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:09,679 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:09,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:09,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:41:09,679 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:09,680 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:09,680 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:09,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:41:09,707 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:09,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 295 transitions, 667 flow [2023-01-28 01:41:09,785 INFO L130 PetriNetUnfolder]: 74/521 cut-off events. [2023-01-28 01:41:09,785 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-01-28 01:41:09,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 521 events. 74/521 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1685 event pairs, 0 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2023-01-28 01:41:09,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 295 transitions, 667 flow [2023-01-28 01:41:09,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 295 transitions, 667 flow [2023-01-28 01:41:09,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:09,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 295 transitions, 667 flow [2023-01-28 01:41:09,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 295 transitions, 667 flow [2023-01-28 01:41:09,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 295 transitions, 667 flow [2023-01-28 01:41:09,871 INFO L130 PetriNetUnfolder]: 74/521 cut-off events. [2023-01-28 01:41:09,871 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-01-28 01:41:09,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 521 events. 74/521 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1685 event pairs, 0 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2023-01-28 01:41:09,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 59584 [2023-01-28 01:41:12,715 INFO L134 LiptonReduction]: Checked pairs total: 136790 [2023-01-28 01:41:12,715 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-01-28 01:41:12,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:12,717 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:12,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:12,734 INFO L130 PetriNetUnfolder]: 50/187 cut-off events. [2023-01-28 01:41:12,734 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-01-28 01:41:12,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:12,735 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:12,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:12,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1616660537, now seen corresponding path program 1 times [2023-01-28 01:41:12,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:12,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630945165] [2023-01-28 01:41:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:12,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:12,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:12,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:12,774 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:12,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:12,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:41:12,774 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:12,775 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:12,775 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:12,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:41:12,800 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:12,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 328 transitions, 752 flow [2023-01-28 01:41:12,897 INFO L130 PetriNetUnfolder]: 84/587 cut-off events. [2023-01-28 01:41:12,897 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-28 01:41:12,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 587 events. 84/587 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1914 event pairs, 0 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 555. Up to 18 conditions per place. [2023-01-28 01:41:12,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 328 transitions, 752 flow [2023-01-28 01:41:12,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 328 transitions, 752 flow [2023-01-28 01:41:12,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:12,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 328 transitions, 752 flow [2023-01-28 01:41:12,911 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 328 transitions, 752 flow [2023-01-28 01:41:12,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 328 transitions, 752 flow [2023-01-28 01:41:12,993 INFO L130 PetriNetUnfolder]: 84/587 cut-off events. [2023-01-28 01:41:12,993 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-28 01:41:13,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 587 events. 84/587 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1914 event pairs, 0 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 555. Up to 18 conditions per place. [2023-01-28 01:41:13,021 INFO L119 LiptonReduction]: Number of co-enabled transitions 76544 [2023-01-28 01:41:16,004 INFO L134 LiptonReduction]: Checked pairs total: 201020 [2023-01-28 01:41:16,005 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-01-28 01:41:16,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:16,006 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:16,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:16,025 INFO L130 PetriNetUnfolder]: 58/216 cut-off events. [2023-01-28 01:41:16,026 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-28 01:41:16,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:16,026 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:16,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:16,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1843327387, now seen corresponding path program 1 times [2023-01-28 01:41:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:16,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52395006] [2023-01-28 01:41:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:16,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:16,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:16,099 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:16,100 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:16,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:41:16,100 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:16,100 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:16,100 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:16,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:41:16,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:16,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 361 transitions, 839 flow [2023-01-28 01:41:16,233 INFO L130 PetriNetUnfolder]: 94/653 cut-off events. [2023-01-28 01:41:16,233 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-01-28 01:41:16,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 653 events. 94/653 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2154 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 630. Up to 20 conditions per place. [2023-01-28 01:41:16,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 361 transitions, 839 flow [2023-01-28 01:41:16,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 361 transitions, 839 flow [2023-01-28 01:41:16,252 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:16,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 361 transitions, 839 flow [2023-01-28 01:41:16,252 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 361 transitions, 839 flow [2023-01-28 01:41:16,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 361 transitions, 839 flow [2023-01-28 01:41:16,391 INFO L130 PetriNetUnfolder]: 94/653 cut-off events. [2023-01-28 01:41:16,391 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-01-28 01:41:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 653 events. 94/653 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2154 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 630. Up to 20 conditions per place. [2023-01-28 01:41:16,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 95616 [2023-01-28 01:41:19,564 INFO L134 LiptonReduction]: Checked pairs total: 222403 [2023-01-28 01:41:19,564 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-01-28 01:41:19,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:19,566 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:19,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:19,588 INFO L130 PetriNetUnfolder]: 66/243 cut-off events. [2023-01-28 01:41:19,589 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-01-28 01:41:19,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:19,589 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:19,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:19,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1823852675, now seen corresponding path program 1 times [2023-01-28 01:41:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:19,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469924799] [2023-01-28 01:41:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:19,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:19,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:19,642 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:19,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:19,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:41:19,642 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:19,643 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:19,643 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:19,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:41:19,667 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:19,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 394 transitions, 928 flow [2023-01-28 01:41:19,789 INFO L130 PetriNetUnfolder]: 104/719 cut-off events. [2023-01-28 01:41:19,790 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-01-28 01:41:19,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 719 events. 104/719 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2399 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 706. Up to 22 conditions per place. [2023-01-28 01:41:19,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 394 transitions, 928 flow [2023-01-28 01:41:19,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 394 transitions, 928 flow [2023-01-28 01:41:19,812 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:19,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 394 transitions, 928 flow [2023-01-28 01:41:19,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 394 transitions, 928 flow [2023-01-28 01:41:19,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 394 transitions, 928 flow [2023-01-28 01:41:19,934 INFO L130 PetriNetUnfolder]: 104/719 cut-off events. [2023-01-28 01:41:19,935 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-01-28 01:41:19,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 719 events. 104/719 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2399 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 706. Up to 22 conditions per place. [2023-01-28 01:41:19,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 116800 [2023-01-28 01:41:23,165 INFO L134 LiptonReduction]: Checked pairs total: 279987 [2023-01-28 01:41:23,165 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-01-28 01:41:23,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:23,167 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:23,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:23,194 INFO L130 PetriNetUnfolder]: 74/271 cut-off events. [2023-01-28 01:41:23,195 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-01-28 01:41:23,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:23,195 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:23,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:23,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -508880899, now seen corresponding path program 1 times [2023-01-28 01:41:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:23,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110621491] [2023-01-28 01:41:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:23,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:23,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:23,235 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:23,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:23,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:41:23,235 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:23,236 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:23,236 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:23,236 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:41:23,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:23,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 427 transitions, 1019 flow [2023-01-28 01:41:23,435 INFO L130 PetriNetUnfolder]: 114/785 cut-off events. [2023-01-28 01:41:23,435 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-01-28 01:41:23,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 785 events. 114/785 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2620 event pairs, 0 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 783. Up to 24 conditions per place. [2023-01-28 01:41:23,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 427 transitions, 1019 flow [2023-01-28 01:41:23,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 427 transitions, 1019 flow [2023-01-28 01:41:23,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:23,459 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 427 transitions, 1019 flow [2023-01-28 01:41:23,459 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 427 transitions, 1019 flow [2023-01-28 01:41:23,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 427 transitions, 1019 flow [2023-01-28 01:41:23,600 INFO L130 PetriNetUnfolder]: 114/785 cut-off events. [2023-01-28 01:41:23,600 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-01-28 01:41:23,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 785 events. 114/785 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2620 event pairs, 0 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 783. Up to 24 conditions per place. [2023-01-28 01:41:23,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 140096 [2023-01-28 01:41:27,194 INFO L134 LiptonReduction]: Checked pairs total: 362631 [2023-01-28 01:41:27,195 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-01-28 01:41:27,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:27,196 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:27,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:27,228 INFO L130 PetriNetUnfolder]: 82/299 cut-off events. [2023-01-28 01:41:27,228 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-01-28 01:41:27,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:27,229 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:27,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:27,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1873799999, now seen corresponding path program 1 times [2023-01-28 01:41:27,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:27,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866176326] [2023-01-28 01:41:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:27,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:27,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:27,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:27,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:27,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:41:27,274 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:27,274 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:27,274 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:27,274 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:41:27,303 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 460 transitions, 1112 flow [2023-01-28 01:41:27,484 INFO L130 PetriNetUnfolder]: 124/851 cut-off events. [2023-01-28 01:41:27,485 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-01-28 01:41:27,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 851 events. 124/851 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2908 event pairs, 0 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 861. Up to 26 conditions per place. [2023-01-28 01:41:27,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 460 transitions, 1112 flow [2023-01-28 01:41:27,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 460 transitions, 1112 flow [2023-01-28 01:41:27,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:27,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 460 transitions, 1112 flow [2023-01-28 01:41:27,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 460 transitions, 1112 flow [2023-01-28 01:41:27,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 460 transitions, 1112 flow [2023-01-28 01:41:27,728 INFO L130 PetriNetUnfolder]: 124/851 cut-off events. [2023-01-28 01:41:27,728 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-01-28 01:41:27,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 851 events. 124/851 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2908 event pairs, 0 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 861. Up to 26 conditions per place. [2023-01-28 01:41:27,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 165504 [2023-01-28 01:41:31,355 INFO L134 LiptonReduction]: Checked pairs total: 400674 [2023-01-28 01:41:31,355 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-01-28 01:41:31,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:31,357 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:31,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:31,405 INFO L130 PetriNetUnfolder]: 102/339 cut-off events. [2023-01-28 01:41:31,405 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-01-28 01:41:31,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:31,405 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 01:41:31,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:31,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1026172418, now seen corresponding path program 1 times [2023-01-28 01:41:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2373745] [2023-01-28 01:41:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:31,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:31,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:31,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:31,451 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:31,451 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:31,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:41:31,451 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:31,452 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:31,452 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:31,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:41:31,483 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:31,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 493 transitions, 1207 flow [2023-01-28 01:41:31,683 INFO L130 PetriNetUnfolder]: 134/917 cut-off events. [2023-01-28 01:41:31,683 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-01-28 01:41:31,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 917 events. 134/917 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3122 event pairs, 0 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 941. Up to 28 conditions per place. [2023-01-28 01:41:31,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 493 transitions, 1207 flow [2023-01-28 01:41:31,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 493 transitions, 1207 flow [2023-01-28 01:41:31,720 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:31,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 493 transitions, 1207 flow [2023-01-28 01:41:31,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 493 transitions, 1207 flow [2023-01-28 01:41:31,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 493 transitions, 1207 flow [2023-01-28 01:41:31,914 INFO L130 PetriNetUnfolder]: 134/917 cut-off events. [2023-01-28 01:41:31,915 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-01-28 01:41:31,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 917 events. 134/917 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3122 event pairs, 0 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 941. Up to 28 conditions per place. [2023-01-28 01:41:32,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 193024 [2023-01-28 01:41:35,687 INFO L134 LiptonReduction]: Checked pairs total: 521226 [2023-01-28 01:41:35,687 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-01-28 01:41:35,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:35,689 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:35,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:35,732 INFO L130 PetriNetUnfolder]: 113/371 cut-off events. [2023-01-28 01:41:35,732 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-01-28 01:41:35,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:35,732 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 01:41:35,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:35,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1000971517, now seen corresponding path program 1 times [2023-01-28 01:41:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:35,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701868729] [2023-01-28 01:41:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:35,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:35,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:35,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:35,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:35,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:35,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:41:35,780 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:35,781 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:35,781 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:35,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:41:35,861 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:35,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 526 transitions, 1304 flow [2023-01-28 01:41:36,051 INFO L130 PetriNetUnfolder]: 144/983 cut-off events. [2023-01-28 01:41:36,052 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-01-28 01:41:36,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 983 events. 144/983 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3361 event pairs, 0 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 1023. Up to 30 conditions per place. [2023-01-28 01:41:36,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 526 transitions, 1304 flow [2023-01-28 01:41:36,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 526 transitions, 1304 flow [2023-01-28 01:41:36,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:36,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 467 places, 526 transitions, 1304 flow [2023-01-28 01:41:36,095 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 467 places, 526 transitions, 1304 flow [2023-01-28 01:41:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 526 transitions, 1304 flow [2023-01-28 01:41:36,324 INFO L130 PetriNetUnfolder]: 144/983 cut-off events. [2023-01-28 01:41:36,324 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-01-28 01:41:36,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 983 events. 144/983 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3361 event pairs, 0 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 1023. Up to 30 conditions per place. [2023-01-28 01:41:36,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 222656 [2023-01-28 01:41:40,305 INFO L134 LiptonReduction]: Checked pairs total: 608000 [2023-01-28 01:41:40,305 INFO L136 LiptonReduction]: Total number of compositions: 335 [2023-01-28 01:41:40,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:40,306 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:40,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:40,350 INFO L130 PetriNetUnfolder]: 120/397 cut-off events. [2023-01-28 01:41:40,350 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-01-28 01:41:40,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:40,351 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:40,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:40,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash 98813426, now seen corresponding path program 1 times [2023-01-28 01:41:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714159936] [2023-01-28 01:41:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:40,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:40,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:40,405 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:40,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 01:41:40,406 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:40,406 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:40,406 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:40,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-01-28 01:41:40,442 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:40,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 559 transitions, 1403 flow [2023-01-28 01:41:40,702 INFO L130 PetriNetUnfolder]: 154/1049 cut-off events. [2023-01-28 01:41:40,703 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-01-28 01:41:40,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 1049 events. 154/1049 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3635 event pairs, 0 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1106. Up to 32 conditions per place. [2023-01-28 01:41:40,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 496 places, 559 transitions, 1403 flow [2023-01-28 01:41:40,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 496 places, 559 transitions, 1403 flow [2023-01-28 01:41:40,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:40,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 496 places, 559 transitions, 1403 flow [2023-01-28 01:41:40,734 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 496 places, 559 transitions, 1403 flow [2023-01-28 01:41:40,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 559 transitions, 1403 flow [2023-01-28 01:41:40,937 INFO L130 PetriNetUnfolder]: 154/1049 cut-off events. [2023-01-28 01:41:40,937 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-01-28 01:41:40,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 1049 events. 154/1049 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3635 event pairs, 0 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1106. Up to 32 conditions per place. [2023-01-28 01:41:41,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 254400 [2023-01-28 01:41:44,969 INFO L134 LiptonReduction]: Checked pairs total: 625378 [2023-01-28 01:41:44,969 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-01-28 01:41:44,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:44,971 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:44,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:45,013 INFO L130 PetriNetUnfolder]: 129/426 cut-off events. [2023-01-28 01:41:45,013 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-01-28 01:41:45,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:45,013 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:45,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:45,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2015816416, now seen corresponding path program 1 times [2023-01-28 01:41:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78504332] [2023-01-28 01:41:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:45,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:45,065 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:45,066 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:45,066 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 01:41:45,066 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:45,066 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:45,066 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:45,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-01-28 01:41:45,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:45,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 592 transitions, 1504 flow [2023-01-28 01:41:45,333 INFO L130 PetriNetUnfolder]: 164/1115 cut-off events. [2023-01-28 01:41:45,333 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-01-28 01:41:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 1115 events. 164/1115 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3845 event pairs, 0 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1190. Up to 34 conditions per place. [2023-01-28 01:41:45,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 592 transitions, 1504 flow [2023-01-28 01:41:45,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 592 transitions, 1504 flow [2023-01-28 01:41:45,372 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:45,372 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 525 places, 592 transitions, 1504 flow [2023-01-28 01:41:45,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 525 places, 592 transitions, 1504 flow [2023-01-28 01:41:45,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 592 transitions, 1504 flow [2023-01-28 01:41:45,632 INFO L130 PetriNetUnfolder]: 164/1115 cut-off events. [2023-01-28 01:41:45,632 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-01-28 01:41:45,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 1115 events. 164/1115 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3845 event pairs, 0 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1190. Up to 34 conditions per place. [2023-01-28 01:41:45,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 288256 [2023-01-28 01:41:50,019 INFO L134 LiptonReduction]: Checked pairs total: 707679 [2023-01-28 01:41:50,020 INFO L136 LiptonReduction]: Total number of compositions: 381 [2023-01-28 01:41:50,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:50,021 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:50,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:50,068 INFO L130 PetriNetUnfolder]: 138/455 cut-off events. [2023-01-28 01:41:50,068 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-01-28 01:41:50,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:50,068 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:50,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:50,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 357187625, now seen corresponding path program 1 times [2023-01-28 01:41:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423606299] [2023-01-28 01:41:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:50,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:50,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:50,123 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:50,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:50,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 01:41:50,124 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:50,124 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:50,124 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:50,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-01-28 01:41:50,165 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:50,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 625 transitions, 1607 flow [2023-01-28 01:41:50,446 INFO L130 PetriNetUnfolder]: 174/1181 cut-off events. [2023-01-28 01:41:50,446 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-01-28 01:41:50,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 1181 events. 174/1181 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4065 event pairs, 0 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1275. Up to 36 conditions per place. [2023-01-28 01:41:50,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 554 places, 625 transitions, 1607 flow [2023-01-28 01:41:50,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 554 places, 625 transitions, 1607 flow [2023-01-28 01:41:50,489 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:50,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 554 places, 625 transitions, 1607 flow [2023-01-28 01:41:50,489 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 554 places, 625 transitions, 1607 flow [2023-01-28 01:41:50,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 625 transitions, 1607 flow [2023-01-28 01:41:50,793 INFO L130 PetriNetUnfolder]: 174/1181 cut-off events. [2023-01-28 01:41:50,793 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-01-28 01:41:50,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 1181 events. 174/1181 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4065 event pairs, 0 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1275. Up to 36 conditions per place. [2023-01-28 01:41:50,893 INFO L119 LiptonReduction]: Number of co-enabled transitions 324224 [2023-01-28 01:41:55,069 INFO L134 LiptonReduction]: Checked pairs total: 797158 [2023-01-28 01:41:55,069 INFO L136 LiptonReduction]: Total number of compositions: 400 [2023-01-28 01:41:55,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:55,071 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:55,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:55,164 INFO L130 PetriNetUnfolder]: 147/484 cut-off events. [2023-01-28 01:41:55,164 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-01-28 01:41:55,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:55,165 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:55,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:55,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:55,165 INFO L85 PathProgramCache]: Analyzing trace with hash -861866982, now seen corresponding path program 1 times [2023-01-28 01:41:55,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:55,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968213446] [2023-01-28 01:41:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:55,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:55,249 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:55,249 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:55,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 01:41:55,250 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:55,250 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:55,250 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:55,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-01-28 01:41:55,298 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:41:55,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 658 transitions, 1712 flow [2023-01-28 01:41:55,601 INFO L130 PetriNetUnfolder]: 184/1247 cut-off events. [2023-01-28 01:41:55,602 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-01-28 01:41:55,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1247 events. 184/1247 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4347 event pairs, 0 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 1361. Up to 38 conditions per place. [2023-01-28 01:41:55,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 583 places, 658 transitions, 1712 flow [2023-01-28 01:41:55,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 583 places, 658 transitions, 1712 flow [2023-01-28 01:41:55,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:55,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 583 places, 658 transitions, 1712 flow [2023-01-28 01:41:55,653 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 583 places, 658 transitions, 1712 flow [2023-01-28 01:41:55,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 658 transitions, 1712 flow [2023-01-28 01:41:55,931 INFO L130 PetriNetUnfolder]: 184/1247 cut-off events. [2023-01-28 01:41:55,931 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-01-28 01:41:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1247 events. 184/1247 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4347 event pairs, 0 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 1361. Up to 38 conditions per place. [2023-01-28 01:41:56,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 362304 [2023-01-28 01:42:00,475 INFO L134 LiptonReduction]: Checked pairs total: 889076 [2023-01-28 01:42:00,476 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-01-28 01:42:00,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:00,477 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:00,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:00,534 INFO L130 PetriNetUnfolder]: 156/513 cut-off events. [2023-01-28 01:42:00,534 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-01-28 01:42:00,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:00,534 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:00,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:00,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 622990005, now seen corresponding path program 1 times [2023-01-28 01:42:00,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677808798] [2023-01-28 01:42:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:00,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:00,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:00,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:00,597 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:00,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:00,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 01:42:00,597 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:00,597 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:00,598 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:00,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-01-28 01:42:00,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:00,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 691 transitions, 1819 flow [2023-01-28 01:42:00,993 INFO L130 PetriNetUnfolder]: 194/1313 cut-off events. [2023-01-28 01:42:00,993 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-01-28 01:42:01,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 1313 events. 194/1313 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4565 event pairs, 0 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1448. Up to 40 conditions per place. [2023-01-28 01:42:01,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 612 places, 691 transitions, 1819 flow [2023-01-28 01:42:01,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 612 places, 691 transitions, 1819 flow [2023-01-28 01:42:01,033 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:01,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 612 places, 691 transitions, 1819 flow [2023-01-28 01:42:01,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 612 places, 691 transitions, 1819 flow [2023-01-28 01:42:01,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 691 transitions, 1819 flow [2023-01-28 01:42:01,326 INFO L130 PetriNetUnfolder]: 194/1313 cut-off events. [2023-01-28 01:42:01,326 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-01-28 01:42:01,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 1313 events. 194/1313 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4565 event pairs, 0 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1448. Up to 40 conditions per place. [2023-01-28 01:42:01,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 402496 [2023-01-28 01:42:06,092 INFO L134 LiptonReduction]: Checked pairs total: 995483 [2023-01-28 01:42:06,092 INFO L136 LiptonReduction]: Total number of compositions: 434 [2023-01-28 01:42:06,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:06,094 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:06,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:06,155 INFO L130 PetriNetUnfolder]: 165/542 cut-off events. [2023-01-28 01:42:06,155 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-01-28 01:42:06,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:06,156 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:06,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:06,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -802159748, now seen corresponding path program 1 times [2023-01-28 01:42:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776730658] [2023-01-28 01:42:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:06,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:06,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:06,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:06,218 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:06,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 01:42:06,218 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:06,219 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:06,219 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:06,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-01-28 01:42:06,269 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:06,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 724 transitions, 1928 flow [2023-01-28 01:42:06,690 INFO L130 PetriNetUnfolder]: 204/1379 cut-off events. [2023-01-28 01:42:06,690 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-01-28 01:42:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1379 events. 204/1379 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4788 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1536. Up to 42 conditions per place. [2023-01-28 01:42:06,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 641 places, 724 transitions, 1928 flow [2023-01-28 01:42:06,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 724 transitions, 1928 flow [2023-01-28 01:42:06,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:06,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 724 transitions, 1928 flow [2023-01-28 01:42:06,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 724 transitions, 1928 flow [2023-01-28 01:42:06,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 724 transitions, 1928 flow [2023-01-28 01:42:07,099 INFO L130 PetriNetUnfolder]: 204/1379 cut-off events. [2023-01-28 01:42:07,100 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-01-28 01:42:07,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1379 events. 204/1379 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4788 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1536. Up to 42 conditions per place. [2023-01-28 01:42:07,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 444800 [2023-01-28 01:42:12,149 INFO L134 LiptonReduction]: Checked pairs total: 1092412 [2023-01-28 01:42:12,149 INFO L136 LiptonReduction]: Total number of compositions: 453 [2023-01-28 01:42:12,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:12,150 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:12,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:12,235 INFO L130 PetriNetUnfolder]: 154/551 cut-off events. [2023-01-28 01:42:12,235 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-01-28 01:42:12,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:12,235 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:12,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:12,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:12,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1299222711, now seen corresponding path program 1 times [2023-01-28 01:42:12,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:12,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955439173] [2023-01-28 01:42:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:12,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:12,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:12,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:12,304 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:12,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:12,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 01:42:12,304 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:12,304 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:12,305 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:12,305 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-01-28 01:42:12,352 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:12,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 670 places, 757 transitions, 2039 flow [2023-01-28 01:42:12,742 INFO L130 PetriNetUnfolder]: 214/1445 cut-off events. [2023-01-28 01:42:12,742 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-01-28 01:42:12,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 1445 events. 214/1445 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5009 event pairs, 0 based on Foata normal form. 0/1187 useless extension candidates. Maximal degree in co-relation 1625. Up to 44 conditions per place. [2023-01-28 01:42:12,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 670 places, 757 transitions, 2039 flow [2023-01-28 01:42:12,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 670 places, 757 transitions, 2039 flow [2023-01-28 01:42:12,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:12,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 670 places, 757 transitions, 2039 flow [2023-01-28 01:42:12,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 670 places, 757 transitions, 2039 flow [2023-01-28 01:42:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 670 places, 757 transitions, 2039 flow [2023-01-28 01:42:13,164 INFO L130 PetriNetUnfolder]: 214/1445 cut-off events. [2023-01-28 01:42:13,164 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-01-28 01:42:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 1445 events. 214/1445 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5009 event pairs, 0 based on Foata normal form. 0/1187 useless extension candidates. Maximal degree in co-relation 1625. Up to 44 conditions per place. [2023-01-28 01:42:13,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 489216 [2023-01-28 01:42:18,654 INFO L134 LiptonReduction]: Checked pairs total: 1213796 [2023-01-28 01:42:18,654 INFO L136 LiptonReduction]: Total number of compositions: 481 [2023-01-28 01:42:18,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:18,656 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:18,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:18,754 INFO L130 PetriNetUnfolder]: 183/600 cut-off events. [2023-01-28 01:42:18,754 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-01-28 01:42:18,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:18,754 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:18,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:18,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:18,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1413395635, now seen corresponding path program 1 times [2023-01-28 01:42:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:18,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016735374] [2023-01-28 01:42:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:18,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:18,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:18,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:18,826 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:18,826 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:18,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 01:42:18,826 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:18,826 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:18,827 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:18,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-01-28 01:42:18,896 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 790 transitions, 2152 flow [2023-01-28 01:42:19,392 INFO L130 PetriNetUnfolder]: 224/1511 cut-off events. [2023-01-28 01:42:19,392 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-01-28 01:42:19,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 1511 events. 224/1511 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5284 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1715. Up to 46 conditions per place. [2023-01-28 01:42:19,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 699 places, 790 transitions, 2152 flow [2023-01-28 01:42:19,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 699 places, 790 transitions, 2152 flow [2023-01-28 01:42:19,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:19,501 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 699 places, 790 transitions, 2152 flow [2023-01-28 01:42:19,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 699 places, 790 transitions, 2152 flow [2023-01-28 01:42:19,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 790 transitions, 2152 flow [2023-01-28 01:42:19,969 INFO L130 PetriNetUnfolder]: 224/1511 cut-off events. [2023-01-28 01:42:19,969 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-01-28 01:42:20,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 1511 events. 224/1511 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5284 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1715. Up to 46 conditions per place. [2023-01-28 01:42:20,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 535744 [2023-01-28 01:42:25,612 INFO L134 LiptonReduction]: Checked pairs total: 1326158 [2023-01-28 01:42:25,612 INFO L136 LiptonReduction]: Total number of compositions: 495 [2023-01-28 01:42:25,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:25,614 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:25,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:25,698 INFO L130 PetriNetUnfolder]: 192/629 cut-off events. [2023-01-28 01:42:25,698 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-01-28 01:42:25,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:25,698 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:25,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:25,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1258466227, now seen corresponding path program 1 times [2023-01-28 01:42:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:25,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60587773] [2023-01-28 01:42:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:25,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:25,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:25,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:25,761 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:25,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:25,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 01:42:25,761 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:25,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:25,761 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:25,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-01-28 01:42:25,817 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:25,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 728 places, 823 transitions, 2267 flow [2023-01-28 01:42:26,484 INFO L130 PetriNetUnfolder]: 234/1577 cut-off events. [2023-01-28 01:42:26,484 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-01-28 01:42:26,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1577 events. 234/1577 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5534 event pairs, 0 based on Foata normal form. 0/1295 useless extension candidates. Maximal degree in co-relation 1806. Up to 48 conditions per place. [2023-01-28 01:42:26,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 728 places, 823 transitions, 2267 flow [2023-01-28 01:42:26,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 728 places, 823 transitions, 2267 flow [2023-01-28 01:42:26,533 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:26,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 728 places, 823 transitions, 2267 flow [2023-01-28 01:42:26,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 728 places, 823 transitions, 2267 flow [2023-01-28 01:42:26,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 728 places, 823 transitions, 2267 flow [2023-01-28 01:42:26,951 INFO L130 PetriNetUnfolder]: 234/1577 cut-off events. [2023-01-28 01:42:26,951 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-01-28 01:42:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1577 events. 234/1577 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5534 event pairs, 0 based on Foata normal form. 0/1295 useless extension candidates. Maximal degree in co-relation 1806. Up to 48 conditions per place. [2023-01-28 01:42:27,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 584384 [2023-01-28 01:42:32,701 INFO L134 LiptonReduction]: Checked pairs total: 1449674 [2023-01-28 01:42:32,701 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-01-28 01:42:32,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:32,702 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:32,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:32,802 INFO L130 PetriNetUnfolder]: 178/635 cut-off events. [2023-01-28 01:42:32,802 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-01-28 01:42:32,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:32,803 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:32,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:32,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1560160684, now seen corresponding path program 1 times [2023-01-28 01:42:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084478127] [2023-01-28 01:42:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:32,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:32,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:32,879 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:32,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 01:42:32,879 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:32,879 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:32,879 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:32,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-01-28 01:42:32,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:32,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 757 places, 856 transitions, 2384 flow [2023-01-28 01:42:33,436 INFO L130 PetriNetUnfolder]: 244/1643 cut-off events. [2023-01-28 01:42:33,436 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-01-28 01:42:33,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1643 events. 244/1643 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5759 event pairs, 0 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1898. Up to 50 conditions per place. [2023-01-28 01:42:33,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 757 places, 856 transitions, 2384 flow [2023-01-28 01:42:33,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 757 places, 856 transitions, 2384 flow [2023-01-28 01:42:33,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:33,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 757 places, 856 transitions, 2384 flow [2023-01-28 01:42:33,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 757 places, 856 transitions, 2384 flow [2023-01-28 01:42:33,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 757 places, 856 transitions, 2384 flow [2023-01-28 01:42:33,993 INFO L130 PetriNetUnfolder]: 244/1643 cut-off events. [2023-01-28 01:42:33,994 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-01-28 01:42:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1643 events. 244/1643 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5759 event pairs, 0 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1898. Up to 50 conditions per place. [2023-01-28 01:42:34,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 635136 [2023-01-28 01:42:39,960 INFO L134 LiptonReduction]: Checked pairs total: 1582867 [2023-01-28 01:42:39,960 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-01-28 01:42:39,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:39,961 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:39,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:40,055 INFO L130 PetriNetUnfolder]: 186/663 cut-off events. [2023-01-28 01:42:40,055 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-01-28 01:42:40,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:40,056 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:40,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:40,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1843058608, now seen corresponding path program 1 times [2023-01-28 01:42:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:40,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646892115] [2023-01-28 01:42:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:40,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:40,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:40,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:40,124 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:40,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:40,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 01:42:40,125 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:40,125 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:40,125 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:40,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-01-28 01:42:40,180 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 889 transitions, 2503 flow [2023-01-28 01:42:40,698 INFO L130 PetriNetUnfolder]: 254/1709 cut-off events. [2023-01-28 01:42:40,698 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-01-28 01:42:40,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 1709 events. 254/1709 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5996 event pairs, 0 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 1991. Up to 52 conditions per place. [2023-01-28 01:42:40,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 786 places, 889 transitions, 2503 flow [2023-01-28 01:42:40,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 786 places, 889 transitions, 2503 flow [2023-01-28 01:42:40,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:40,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 786 places, 889 transitions, 2503 flow [2023-01-28 01:42:40,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 786 places, 889 transitions, 2503 flow [2023-01-28 01:42:40,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 889 transitions, 2503 flow [2023-01-28 01:42:41,341 INFO L130 PetriNetUnfolder]: 254/1709 cut-off events. [2023-01-28 01:42:41,341 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-01-28 01:42:41,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 1709 events. 254/1709 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5996 event pairs, 0 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 1991. Up to 52 conditions per place. [2023-01-28 01:42:41,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 688000 [2023-01-28 01:42:47,630 INFO L134 LiptonReduction]: Checked pairs total: 1714861 [2023-01-28 01:42:47,630 INFO L136 LiptonReduction]: Total number of compositions: 552 [2023-01-28 01:42:47,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:47,632 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:47,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:47,765 INFO L130 PetriNetUnfolder]: 219/716 cut-off events. [2023-01-28 01:42:47,766 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-01-28 01:42:47,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:47,766 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:47,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:47,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2034927601, now seen corresponding path program 1 times [2023-01-28 01:42:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:47,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140924243] [2023-01-28 01:42:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:47,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:47,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:47,841 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:47,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 01:42:47,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:47,842 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:47,842 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:47,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-01-28 01:42:47,899 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:47,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 922 transitions, 2624 flow [2023-01-28 01:42:48,531 INFO L130 PetriNetUnfolder]: 264/1775 cut-off events. [2023-01-28 01:42:48,531 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-01-28 01:42:48,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1775 events. 264/1775 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6222 event pairs, 0 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 2085. Up to 54 conditions per place. [2023-01-28 01:42:48,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 815 places, 922 transitions, 2624 flow [2023-01-28 01:42:48,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 815 places, 922 transitions, 2624 flow [2023-01-28 01:42:48,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:48,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 815 places, 922 transitions, 2624 flow [2023-01-28 01:42:48,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 815 places, 922 transitions, 2624 flow [2023-01-28 01:42:48,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 922 transitions, 2624 flow [2023-01-28 01:42:49,223 INFO L130 PetriNetUnfolder]: 264/1775 cut-off events. [2023-01-28 01:42:49,223 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-01-28 01:42:49,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1775 events. 264/1775 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6222 event pairs, 0 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 2085. Up to 54 conditions per place. [2023-01-28 01:42:49,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 742976 [2023-01-28 01:42:55,737 INFO L134 LiptonReduction]: Checked pairs total: 1848138 [2023-01-28 01:42:55,737 INFO L136 LiptonReduction]: Total number of compositions: 570 [2023-01-28 01:42:55,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:55,740 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:55,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:55,893 INFO L130 PetriNetUnfolder]: 228/745 cut-off events. [2023-01-28 01:42:55,893 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-01-28 01:42:55,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:55,893 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:55,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:55,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 831630080, now seen corresponding path program 1 times [2023-01-28 01:42:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:55,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966462152] [2023-01-28 01:42:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:55,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:55,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:55,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:55,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:55,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 01:42:55,975 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:55,976 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:55,976 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:55,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-01-28 01:42:56,037 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:42:56,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 955 transitions, 2747 flow [2023-01-28 01:42:56,772 INFO L130 PetriNetUnfolder]: 274/1841 cut-off events. [2023-01-28 01:42:56,772 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-01-28 01:42:56,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1841 events. 274/1841 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6438 event pairs, 0 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 2180. Up to 56 conditions per place. [2023-01-28 01:42:56,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 844 places, 955 transitions, 2747 flow [2023-01-28 01:42:56,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 844 places, 955 transitions, 2747 flow [2023-01-28 01:42:56,885 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:56,885 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 844 places, 955 transitions, 2747 flow [2023-01-28 01:42:56,885 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 844 places, 955 transitions, 2747 flow [2023-01-28 01:42:56,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 955 transitions, 2747 flow [2023-01-28 01:42:57,541 INFO L130 PetriNetUnfolder]: 274/1841 cut-off events. [2023-01-28 01:42:57,541 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-01-28 01:42:57,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1841 events. 274/1841 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6438 event pairs, 0 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 2180. Up to 56 conditions per place. [2023-01-28 01:42:57,784 INFO L119 LiptonReduction]: Number of co-enabled transitions 800064 [2023-01-28 01:43:04,124 INFO L134 LiptonReduction]: Checked pairs total: 2005862 [2023-01-28 01:43:04,124 INFO L136 LiptonReduction]: Total number of compositions: 593 [2023-01-28 01:43:04,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:04,125 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:04,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:04,249 INFO L130 PetriNetUnfolder]: 212/752 cut-off events. [2023-01-28 01:43:04,249 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-01-28 01:43:04,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:04,249 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:04,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:04,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -537235835, now seen corresponding path program 1 times [2023-01-28 01:43:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:04,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719205564] [2023-01-28 01:43:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:04,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:04,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:04,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:04,327 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:04,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 01:43:04,328 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:04,328 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:04,328 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:04,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-01-28 01:43:04,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:43:04,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 988 transitions, 2872 flow [2023-01-28 01:43:05,175 INFO L130 PetriNetUnfolder]: 284/1907 cut-off events. [2023-01-28 01:43:05,176 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-01-28 01:43:05,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1907 events. 284/1907 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6631 event pairs, 0 based on Foata normal form. 0/1565 useless extension candidates. Maximal degree in co-relation 2276. Up to 58 conditions per place. [2023-01-28 01:43:05,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 873 places, 988 transitions, 2872 flow [2023-01-28 01:43:05,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 873 places, 988 transitions, 2872 flow [2023-01-28 01:43:05,293 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:05,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 873 places, 988 transitions, 2872 flow [2023-01-28 01:43:05,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 873 places, 988 transitions, 2872 flow [2023-01-28 01:43:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 988 transitions, 2872 flow [2023-01-28 01:43:06,010 INFO L130 PetriNetUnfolder]: 284/1907 cut-off events. [2023-01-28 01:43:06,010 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-01-28 01:43:06,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1907 events. 284/1907 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6631 event pairs, 0 based on Foata normal form. 0/1565 useless extension candidates. Maximal degree in co-relation 2276. Up to 58 conditions per place. [2023-01-28 01:43:06,256 INFO L119 LiptonReduction]: Number of co-enabled transitions 859264 [2023-01-28 01:43:12,887 INFO L134 LiptonReduction]: Checked pairs total: 2138060 [2023-01-28 01:43:12,888 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-01-28 01:43:12,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:12,889 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:12,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:13,027 INFO L130 PetriNetUnfolder]: 248/807 cut-off events. [2023-01-28 01:43:13,027 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-01-28 01:43:13,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:13,027 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:13,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:13,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1245020778, now seen corresponding path program 1 times [2023-01-28 01:43:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675969734] [2023-01-28 01:43:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:13,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:13,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:13,104 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:13,104 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:13,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 01:43:13,104 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:13,105 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:13,105 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:13,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-01-28 01:43:13,164 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:43:13,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 902 places, 1021 transitions, 2999 flow [2023-01-28 01:43:13,868 INFO L130 PetriNetUnfolder]: 294/1973 cut-off events. [2023-01-28 01:43:13,868 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-01-28 01:43:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1973 events. 294/1973 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6895 event pairs, 0 based on Foata normal form. 0/1619 useless extension candidates. Maximal degree in co-relation 2373. Up to 60 conditions per place. [2023-01-28 01:43:13,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 902 places, 1021 transitions, 2999 flow [2023-01-28 01:43:14,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 902 places, 1021 transitions, 2999 flow [2023-01-28 01:43:14,001 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:14,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 902 places, 1021 transitions, 2999 flow [2023-01-28 01:43:14,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 902 places, 1021 transitions, 2999 flow [2023-01-28 01:43:14,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 902 places, 1021 transitions, 2999 flow [2023-01-28 01:43:14,784 INFO L130 PetriNetUnfolder]: 294/1973 cut-off events. [2023-01-28 01:43:14,785 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-01-28 01:43:14,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1973 events. 294/1973 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6895 event pairs, 0 based on Foata normal form. 0/1619 useless extension candidates. Maximal degree in co-relation 2373. Up to 60 conditions per place. [2023-01-28 01:43:15,057 INFO L119 LiptonReduction]: Number of co-enabled transitions 920576 [2023-01-28 01:43:22,030 INFO L134 LiptonReduction]: Checked pairs total: 2281887 [2023-01-28 01:43:22,030 INFO L136 LiptonReduction]: Total number of compositions: 631 [2023-01-28 01:43:22,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:22,032 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:22,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:22,188 INFO L130 PetriNetUnfolder]: 257/837 cut-off events. [2023-01-28 01:43:22,188 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-01-28 01:43:22,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:22,188 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:22,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:22,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -95976138, now seen corresponding path program 1 times [2023-01-28 01:43:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101456126] [2023-01-28 01:43:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:22,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:22,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:22,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:22,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:22,277 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:22,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 01:43:22,277 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:22,277 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:22,277 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:22,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-01-28 01:43:22,336 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:43:22,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 931 places, 1054 transitions, 3128 flow [2023-01-28 01:43:23,073 INFO L130 PetriNetUnfolder]: 304/2039 cut-off events. [2023-01-28 01:43:23,073 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-01-28 01:43:23,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 2039 events. 304/2039 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7098 event pairs, 0 based on Foata normal form. 0/1673 useless extension candidates. Maximal degree in co-relation 2471. Up to 62 conditions per place. [2023-01-28 01:43:23,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 931 places, 1054 transitions, 3128 flow [2023-01-28 01:43:23,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 931 places, 1054 transitions, 3128 flow [2023-01-28 01:43:23,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:23,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 931 places, 1054 transitions, 3128 flow [2023-01-28 01:43:23,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 931 places, 1054 transitions, 3128 flow [2023-01-28 01:43:23,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 931 places, 1054 transitions, 3128 flow [2023-01-28 01:43:23,970 INFO L130 PetriNetUnfolder]: 304/2039 cut-off events. [2023-01-28 01:43:23,970 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-01-28 01:43:24,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 2039 events. 304/2039 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7098 event pairs, 0 based on Foata normal form. 0/1673 useless extension candidates. Maximal degree in co-relation 2471. Up to 62 conditions per place. [2023-01-28 01:43:24,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 984000 [2023-01-28 01:43:31,436 INFO L134 LiptonReduction]: Checked pairs total: 2467023 [2023-01-28 01:43:31,437 INFO L136 LiptonReduction]: Total number of compositions: 653 [2023-01-28 01:43:31,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:31,438 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:31,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:31,606 INFO L130 PetriNetUnfolder]: 266/865 cut-off events. [2023-01-28 01:43:31,606 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-01-28 01:43:31,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:31,607 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:31,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:31,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1420629532, now seen corresponding path program 1 times [2023-01-28 01:43:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346562469] [2023-01-28 01:43:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:31,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:31,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:31,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:31,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-28 01:43:31,688 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:31,688 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:31,688 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:31,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-01-28 01:43:31,753 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:43:31,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 960 places, 1087 transitions, 3259 flow [2023-01-28 01:43:32,687 INFO L130 PetriNetUnfolder]: 314/2105 cut-off events. [2023-01-28 01:43:32,687 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-01-28 01:43:32,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 2105 events. 314/2105 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7363 event pairs, 0 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 2570. Up to 64 conditions per place. [2023-01-28 01:43:32,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 960 places, 1087 transitions, 3259 flow [2023-01-28 01:43:32,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 960 places, 1087 transitions, 3259 flow [2023-01-28 01:43:32,771 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:32,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 960 places, 1087 transitions, 3259 flow [2023-01-28 01:43:32,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 960 places, 1087 transitions, 3259 flow [2023-01-28 01:43:32,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 960 places, 1087 transitions, 3259 flow [2023-01-28 01:43:33,544 INFO L130 PetriNetUnfolder]: 314/2105 cut-off events. [2023-01-28 01:43:33,544 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-01-28 01:43:33,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 2105 events. 314/2105 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7363 event pairs, 0 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 2570. Up to 64 conditions per place. [2023-01-28 01:43:34,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049536 [2023-01-28 01:43:41,620 INFO L134 LiptonReduction]: Checked pairs total: 2630374 [2023-01-28 01:43:41,620 INFO L136 LiptonReduction]: Total number of compositions: 672 [2023-01-28 01:43:41,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:41,622 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:41,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:41,794 INFO L130 PetriNetUnfolder]: 275/895 cut-off events. [2023-01-28 01:43:41,794 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-01-28 01:43:41,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:41,794 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:41,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:41,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash 764066699, now seen corresponding path program 1 times [2023-01-28 01:43:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:41,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133307605] [2023-01-28 01:43:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:41,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:41,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:41,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:41,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:41,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:41,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 01:43:41,887 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:41,887 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:41,887 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:41,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-01-28 01:43:41,960 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:43:41,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 989 places, 1120 transitions, 3392 flow [2023-01-28 01:43:42,847 INFO L130 PetriNetUnfolder]: 324/2171 cut-off events. [2023-01-28 01:43:42,847 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-01-28 01:43:42,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 2171 events. 324/2171 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7580 event pairs, 0 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 2670. Up to 66 conditions per place. [2023-01-28 01:43:42,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 989 places, 1120 transitions, 3392 flow [2023-01-28 01:43:42,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 989 places, 1120 transitions, 3392 flow [2023-01-28 01:43:42,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:42,972 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 989 places, 1120 transitions, 3392 flow [2023-01-28 01:43:42,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 989 places, 1120 transitions, 3392 flow [2023-01-28 01:43:42,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 989 places, 1120 transitions, 3392 flow [2023-01-28 01:43:43,826 INFO L130 PetriNetUnfolder]: 324/2171 cut-off events. [2023-01-28 01:43:43,827 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-01-28 01:43:43,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 2171 events. 324/2171 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7580 event pairs, 0 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 2670. Up to 66 conditions per place. [2023-01-28 01:43:44,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 1117184 [2023-01-28 01:43:51,702 INFO L134 LiptonReduction]: Checked pairs total: 2782376 [2023-01-28 01:43:51,702 INFO L136 LiptonReduction]: Total number of compositions: 692 [2023-01-28 01:43:51,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:51,704 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:51,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:51,889 INFO L130 PetriNetUnfolder]: 284/922 cut-off events. [2023-01-28 01:43:51,890 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-01-28 01:43:51,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:51,890 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:51,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:51,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1825218281, now seen corresponding path program 1 times [2023-01-28 01:43:51,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:51,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628049780] [2023-01-28 01:43:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:51,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:51,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:51,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:51,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:51,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:51,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-01-28 01:43:51,979 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:51,979 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:51,979 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:51,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-01-28 01:43:52,044 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:43:52,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1018 places, 1153 transitions, 3527 flow [2023-01-28 01:43:52,968 INFO L130 PetriNetUnfolder]: 334/2237 cut-off events. [2023-01-28 01:43:52,968 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-01-28 01:43:53,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 2237 events. 334/2237 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7817 event pairs, 0 based on Foata normal form. 0/1835 useless extension candidates. Maximal degree in co-relation 2771. Up to 68 conditions per place. [2023-01-28 01:43:53,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 1018 places, 1153 transitions, 3527 flow [2023-01-28 01:43:53,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1018 places, 1153 transitions, 3527 flow [2023-01-28 01:43:53,133 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:53,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1018 places, 1153 transitions, 3527 flow [2023-01-28 01:43:53,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1018 places, 1153 transitions, 3527 flow [2023-01-28 01:43:53,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1018 places, 1153 transitions, 3527 flow [2023-01-28 01:43:54,058 INFO L130 PetriNetUnfolder]: 334/2237 cut-off events. [2023-01-28 01:43:54,058 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-01-28 01:43:54,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 2237 events. 334/2237 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7817 event pairs, 0 based on Foata normal form. 0/1835 useless extension candidates. Maximal degree in co-relation 2771. Up to 68 conditions per place. [2023-01-28 01:43:54,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 1186944 [2023-01-28 01:44:02,412 INFO L134 LiptonReduction]: Checked pairs total: 2949387 [2023-01-28 01:44:02,412 INFO L136 LiptonReduction]: Total number of compositions: 711 [2023-01-28 01:44:02,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:02,413 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:02,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:02,595 INFO L130 PetriNetUnfolder]: 293/951 cut-off events. [2023-01-28 01:44:02,595 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-01-28 01:44:02,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:02,595 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:02,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:02,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1599524429, now seen corresponding path program 1 times [2023-01-28 01:44:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339229529] [2023-01-28 01:44:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:02,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:02,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:02,694 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:02,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:02,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-01-28 01:44:02,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:02,694 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:02,695 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:02,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-01-28 01:44:02,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:44:02,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1186 transitions, 3664 flow [2023-01-28 01:44:03,912 INFO L130 PetriNetUnfolder]: 344/2303 cut-off events. [2023-01-28 01:44:03,912 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-01-28 01:44:04,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 2303 events. 344/2303 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8067 event pairs, 0 based on Foata normal form. 0/1889 useless extension candidates. Maximal degree in co-relation 2873. Up to 70 conditions per place. [2023-01-28 01:44:04,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 1047 places, 1186 transitions, 3664 flow [2023-01-28 01:44:04,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1047 places, 1186 transitions, 3664 flow [2023-01-28 01:44:04,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:04,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1047 places, 1186 transitions, 3664 flow [2023-01-28 01:44:04,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1047 places, 1186 transitions, 3664 flow [2023-01-28 01:44:04,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1186 transitions, 3664 flow [2023-01-28 01:44:05,215 INFO L130 PetriNetUnfolder]: 344/2303 cut-off events. [2023-01-28 01:44:05,215 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-01-28 01:44:05,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 2303 events. 344/2303 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8067 event pairs, 0 based on Foata normal form. 0/1889 useless extension candidates. Maximal degree in co-relation 2873. Up to 70 conditions per place. [2023-01-28 01:44:05,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 1258816 [2023-01-28 01:44:13,880 INFO L134 LiptonReduction]: Checked pairs total: 3163327 [2023-01-28 01:44:13,881 INFO L136 LiptonReduction]: Total number of compositions: 737 [2023-01-28 01:44:13,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:13,882 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:13,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:14,078 INFO L130 PetriNetUnfolder]: 268/948 cut-off events. [2023-01-28 01:44:14,078 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-01-28 01:44:14,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:14,078 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:14,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:14,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2105060049, now seen corresponding path program 1 times [2023-01-28 01:44:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162549401] [2023-01-28 01:44:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:14,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:14,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:14,188 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:14,188 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:14,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-28 01:44:14,188 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:14,189 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:14,189 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:14,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-01-28 01:44:14,262 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:44:14,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1076 places, 1219 transitions, 3803 flow [2023-01-28 01:44:15,297 INFO L130 PetriNetUnfolder]: 354/2369 cut-off events. [2023-01-28 01:44:15,297 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-01-28 01:44:15,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 2369 events. 354/2369 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8299 event pairs, 0 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 2976. Up to 72 conditions per place. [2023-01-28 01:44:15,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 1076 places, 1219 transitions, 3803 flow [2023-01-28 01:44:15,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1076 places, 1219 transitions, 3803 flow [2023-01-28 01:44:15,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:15,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1076 places, 1219 transitions, 3803 flow [2023-01-28 01:44:15,496 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1076 places, 1219 transitions, 3803 flow [2023-01-28 01:44:15,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1076 places, 1219 transitions, 3803 flow [2023-01-28 01:44:16,491 INFO L130 PetriNetUnfolder]: 354/2369 cut-off events. [2023-01-28 01:44:16,491 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-01-28 01:44:16,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 2369 events. 354/2369 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8299 event pairs, 0 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 2976. Up to 72 conditions per place. [2023-01-28 01:44:17,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 1332800 [2023-01-28 01:44:25,541 INFO L134 LiptonReduction]: Checked pairs total: 3733176 [2023-01-28 01:44:25,542 INFO L136 LiptonReduction]: Total number of compositions: 751 [2023-01-28 01:44:25,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:25,543 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:25,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:25,744 INFO L130 PetriNetUnfolder]: 276/976 cut-off events. [2023-01-28 01:44:25,745 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-01-28 01:44:25,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:25,745 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:25,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:25,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash -116720504, now seen corresponding path program 1 times [2023-01-28 01:44:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:25,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703495422] [2023-01-28 01:44:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:25,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:25,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:25,844 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:25,844 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 01:44:25,844 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:25,845 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:25,845 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:25,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-01-28 01:44:25,919 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:44:25,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1252 transitions, 3944 flow [2023-01-28 01:44:27,025 INFO L130 PetriNetUnfolder]: 364/2435 cut-off events. [2023-01-28 01:44:27,025 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-01-28 01:44:27,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 2435 events. 364/2435 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8547 event pairs, 0 based on Foata normal form. 0/1997 useless extension candidates. Maximal degree in co-relation 3080. Up to 74 conditions per place. [2023-01-28 01:44:27,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 1105 places, 1252 transitions, 3944 flow [2023-01-28 01:44:27,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1105 places, 1252 transitions, 3944 flow [2023-01-28 01:44:27,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:27,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1105 places, 1252 transitions, 3944 flow [2023-01-28 01:44:27,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1105 places, 1252 transitions, 3944 flow [2023-01-28 01:44:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1252 transitions, 3944 flow [2023-01-28 01:44:28,289 INFO L130 PetriNetUnfolder]: 364/2435 cut-off events. [2023-01-28 01:44:28,290 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-01-28 01:44:28,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 2435 events. 364/2435 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8547 event pairs, 0 based on Foata normal form. 0/1997 useless extension candidates. Maximal degree in co-relation 3080. Up to 74 conditions per place. [2023-01-28 01:44:29,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 1408896 [2023-01-28 01:44:37,698 INFO L134 LiptonReduction]: Checked pairs total: 3548512 [2023-01-28 01:44:37,698 INFO L136 LiptonReduction]: Total number of compositions: 780 [2023-01-28 01:44:37,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:37,699 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:37,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:37,918 INFO L130 PetriNetUnfolder]: 320/1039 cut-off events. [2023-01-28 01:44:37,919 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-01-28 01:44:37,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:37,919 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:37,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:37,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:37,919 INFO L85 PathProgramCache]: Analyzing trace with hash -381247816, now seen corresponding path program 1 times [2023-01-28 01:44:37,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:37,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440400297] [2023-01-28 01:44:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:37,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:38,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:38,119 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:38,119 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:38,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-28 01:44:38,119 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:38,120 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:38,120 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:38,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-01-28 01:44:38,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:44:38,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1134 places, 1285 transitions, 4087 flow [2023-01-28 01:44:39,361 INFO L130 PetriNetUnfolder]: 374/2501 cut-off events. [2023-01-28 01:44:39,362 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-01-28 01:44:39,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 2501 events. 374/2501 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8723 event pairs, 0 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 3185. Up to 76 conditions per place. [2023-01-28 01:44:39,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 1134 places, 1285 transitions, 4087 flow [2023-01-28 01:44:39,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1134 places, 1285 transitions, 4087 flow [2023-01-28 01:44:39,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:39,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1134 places, 1285 transitions, 4087 flow [2023-01-28 01:44:39,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1134 places, 1285 transitions, 4087 flow [2023-01-28 01:44:39,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1134 places, 1285 transitions, 4087 flow [2023-01-28 01:44:40,860 INFO L130 PetriNetUnfolder]: 374/2501 cut-off events. [2023-01-28 01:44:40,860 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-01-28 01:44:40,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 2501 events. 374/2501 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8723 event pairs, 0 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 3185. Up to 76 conditions per place. [2023-01-28 01:44:41,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 1487104 [2023-01-28 01:44:50,591 INFO L134 LiptonReduction]: Checked pairs total: 4165101 [2023-01-28 01:44:50,591 INFO L136 LiptonReduction]: Total number of compositions: 791 [2023-01-28 01:44:50,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:50,592 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:50,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:50,831 INFO L130 PetriNetUnfolder]: 329/1069 cut-off events. [2023-01-28 01:44:50,832 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-01-28 01:44:50,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:50,832 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:50,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:50,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 924732538, now seen corresponding path program 1 times [2023-01-28 01:44:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:50,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114761005] [2023-01-28 01:44:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:50,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:50,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:50,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:50,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:50,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-28 01:44:50,951 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:50,952 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:50,952 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:50,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-01-28 01:44:51,033 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:44:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1163 places, 1318 transitions, 4232 flow [2023-01-28 01:44:52,276 INFO L130 PetriNetUnfolder]: 384/2567 cut-off events. [2023-01-28 01:44:52,276 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-01-28 01:44:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 2567 events. 384/2567 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8989 event pairs, 0 based on Foata normal form. 0/2105 useless extension candidates. Maximal degree in co-relation 3291. Up to 78 conditions per place. [2023-01-28 01:44:52,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 1163 places, 1318 transitions, 4232 flow [2023-01-28 01:44:52,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1163 places, 1318 transitions, 4232 flow [2023-01-28 01:44:52,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:52,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1163 places, 1318 transitions, 4232 flow [2023-01-28 01:44:52,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1163 places, 1318 transitions, 4232 flow [2023-01-28 01:44:52,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1163 places, 1318 transitions, 4232 flow [2023-01-28 01:44:53,671 INFO L130 PetriNetUnfolder]: 384/2567 cut-off events. [2023-01-28 01:44:53,672 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-01-28 01:44:53,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 2567 events. 384/2567 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8989 event pairs, 0 based on Foata normal form. 0/2105 useless extension candidates. Maximal degree in co-relation 3291. Up to 78 conditions per place. [2023-01-28 01:44:54,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 1567424 [2023-01-28 01:45:03,538 INFO L134 LiptonReduction]: Checked pairs total: 3945281 [2023-01-28 01:45:03,538 INFO L136 LiptonReduction]: Total number of compositions: 809 [2023-01-28 01:45:03,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:03,539 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:03,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:03,796 INFO L130 PetriNetUnfolder]: 336/1093 cut-off events. [2023-01-28 01:45:03,796 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-01-28 01:45:03,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:03,796 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:03,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:03,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash -56838460, now seen corresponding path program 1 times [2023-01-28 01:45:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:03,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080214281] [2023-01-28 01:45:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:03,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:03,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:03,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:03,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:03,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-01-28 01:45:03,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:03,917 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:03,917 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:03,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-01-28 01:45:03,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:45:04,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1192 places, 1351 transitions, 4379 flow [2023-01-28 01:45:05,263 INFO L130 PetriNetUnfolder]: 394/2633 cut-off events. [2023-01-28 01:45:05,263 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-01-28 01:45:05,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 2633 events. 394/2633 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9232 event pairs, 0 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 3398. Up to 80 conditions per place. [2023-01-28 01:45:05,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 1192 places, 1351 transitions, 4379 flow [2023-01-28 01:45:05,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1192 places, 1351 transitions, 4379 flow [2023-01-28 01:45:05,460 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:05,460 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1192 places, 1351 transitions, 4379 flow [2023-01-28 01:45:05,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1192 places, 1351 transitions, 4379 flow [2023-01-28 01:45:05,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1192 places, 1351 transitions, 4379 flow [2023-01-28 01:45:06,710 INFO L130 PetriNetUnfolder]: 394/2633 cut-off events. [2023-01-28 01:45:06,710 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-01-28 01:45:06,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 2633 events. 394/2633 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9232 event pairs, 0 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 3398. Up to 80 conditions per place. [2023-01-28 01:45:07,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 1649856 [2023-01-28 01:45:17,327 INFO L134 LiptonReduction]: Checked pairs total: 4618377 [2023-01-28 01:45:17,327 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-01-28 01:45:17,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:17,328 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:17,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:17,574 INFO L130 PetriNetUnfolder]: 308/1088 cut-off events. [2023-01-28 01:45:17,574 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-01-28 01:45:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:17,574 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:17,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:17,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 696518690, now seen corresponding path program 1 times [2023-01-28 01:45:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:17,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564381405] [2023-01-28 01:45:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:17,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:17,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:17,694 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:17,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:17,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-28 01:45:17,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:17,695 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:17,695 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:17,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-01-28 01:45:17,776 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:45:17,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1221 places, 1384 transitions, 4528 flow [2023-01-28 01:45:19,175 INFO L130 PetriNetUnfolder]: 404/2699 cut-off events. [2023-01-28 01:45:19,176 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-01-28 01:45:19,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 2699 events. 404/2699 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 9506 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3506. Up to 82 conditions per place. [2023-01-28 01:45:19,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 1221 places, 1384 transitions, 4528 flow [2023-01-28 01:45:19,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1221 places, 1384 transitions, 4528 flow [2023-01-28 01:45:19,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:19,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1221 places, 1384 transitions, 4528 flow [2023-01-28 01:45:19,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1221 places, 1384 transitions, 4528 flow [2023-01-28 01:45:19,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1221 places, 1384 transitions, 4528 flow [2023-01-28 01:45:20,902 INFO L130 PetriNetUnfolder]: 404/2699 cut-off events. [2023-01-28 01:45:20,902 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-01-28 01:45:20,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 2699 events. 404/2699 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 9506 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3506. Up to 82 conditions per place. [2023-01-28 01:45:21,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 1734400 [2023-01-28 01:45:30,952 INFO L134 LiptonReduction]: Checked pairs total: 4372392 [2023-01-28 01:45:30,952 INFO L136 LiptonReduction]: Total number of compositions: 847 [2023-01-28 01:45:30,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:30,954 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:30,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:31,233 INFO L130 PetriNetUnfolder]: 356/1156 cut-off events. [2023-01-28 01:45:31,234 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-01-28 01:45:31,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:31,234 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:31,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:31,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1784633503, now seen corresponding path program 1 times [2023-01-28 01:45:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:31,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895097377] [2023-01-28 01:45:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:31,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:31,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:31,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:31,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:31,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-28 01:45:31,361 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:31,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:31,362 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:31,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-01-28 01:45:31,445 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:45:31,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1250 places, 1417 transitions, 4679 flow [2023-01-28 01:45:32,848 INFO L130 PetriNetUnfolder]: 414/2765 cut-off events. [2023-01-28 01:45:32,848 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-01-28 01:45:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 2765 events. 414/2765 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9783 event pairs, 0 based on Foata normal form. 0/2267 useless extension candidates. Maximal degree in co-relation 3615. Up to 84 conditions per place. [2023-01-28 01:45:33,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 1250 places, 1417 transitions, 4679 flow [2023-01-28 01:45:33,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1250 places, 1417 transitions, 4679 flow [2023-01-28 01:45:33,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:33,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1250 places, 1417 transitions, 4679 flow [2023-01-28 01:45:33,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1250 places, 1417 transitions, 4679 flow [2023-01-28 01:45:33,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1250 places, 1417 transitions, 4679 flow [2023-01-28 01:45:34,444 INFO L130 PetriNetUnfolder]: 414/2765 cut-off events. [2023-01-28 01:45:34,444 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-01-28 01:45:34,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 2765 events. 414/2765 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9783 event pairs, 0 based on Foata normal form. 0/2267 useless extension candidates. Maximal degree in co-relation 3615. Up to 84 conditions per place. [2023-01-28 01:45:35,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 1821056 [2023-01-28 01:45:45,537 INFO L134 LiptonReduction]: Checked pairs total: 4580158 [2023-01-28 01:45:45,537 INFO L136 LiptonReduction]: Total number of compositions: 871 [2023-01-28 01:45:45,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:45,539 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:45,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:45,886 INFO L130 PetriNetUnfolder]: 365/1185 cut-off events. [2023-01-28 01:45:45,886 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-01-28 01:45:45,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:45,886 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:45,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:45,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash 338989873, now seen corresponding path program 1 times [2023-01-28 01:45:45,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:45,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397253445] [2023-01-28 01:45:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:45,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:46,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:46,003 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:46,003 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-28 01:45:46,003 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:46,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:46,004 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:46,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-01-28 01:45:46,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:45:46,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1279 places, 1450 transitions, 4832 flow [2023-01-28 01:45:47,884 INFO L130 PetriNetUnfolder]: 424/2831 cut-off events. [2023-01-28 01:45:47,884 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-01-28 01:45:47,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3861 conditions, 2831 events. 424/2831 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10020 event pairs, 0 based on Foata normal form. 0/2321 useless extension candidates. Maximal degree in co-relation 3725. Up to 86 conditions per place. [2023-01-28 01:45:48,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 1279 places, 1450 transitions, 4832 flow [2023-01-28 01:45:48,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1279 places, 1450 transitions, 4832 flow [2023-01-28 01:45:48,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:48,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1279 places, 1450 transitions, 4832 flow [2023-01-28 01:45:48,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1279 places, 1450 transitions, 4832 flow [2023-01-28 01:45:48,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1279 places, 1450 transitions, 4832 flow [2023-01-28 01:45:49,712 INFO L130 PetriNetUnfolder]: 424/2831 cut-off events. [2023-01-28 01:45:49,712 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-01-28 01:45:49,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3861 conditions, 2831 events. 424/2831 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10020 event pairs, 0 based on Foata normal form. 0/2321 useless extension candidates. Maximal degree in co-relation 3725. Up to 86 conditions per place. [2023-01-28 01:45:50,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 1909824 [2023-01-28 01:46:00,681 INFO L134 LiptonReduction]: Checked pairs total: 4806656 [2023-01-28 01:46:00,681 INFO L136 LiptonReduction]: Total number of compositions: 892 [2023-01-28 01:46:00,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:00,683 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:00,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:00,987 INFO L130 PetriNetUnfolder]: 374/1213 cut-off events. [2023-01-28 01:46:00,987 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-01-28 01:46:00,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:00,988 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:46:00,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:00,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1837833959, now seen corresponding path program 1 times [2023-01-28 01:46:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:00,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760332200] [2023-01-28 01:46:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:01,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:01,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:01,110 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:01,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:01,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-28 01:46:01,110 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:01,111 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:01,111 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:01,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-01-28 01:46:01,210 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:46:01,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1308 places, 1483 transitions, 4987 flow [2023-01-28 01:46:03,116 INFO L130 PetriNetUnfolder]: 434/2897 cut-off events. [2023-01-28 01:46:03,117 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-01-28 01:46:03,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 2897 events. 434/2897 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10197 event pairs, 0 based on Foata normal form. 0/2375 useless extension candidates. Maximal degree in co-relation 3836. Up to 88 conditions per place. [2023-01-28 01:46:03,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 1308 places, 1483 transitions, 4987 flow [2023-01-28 01:46:03,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1308 places, 1483 transitions, 4987 flow [2023-01-28 01:46:03,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:03,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1308 places, 1483 transitions, 4987 flow [2023-01-28 01:46:03,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1308 places, 1483 transitions, 4987 flow [2023-01-28 01:46:03,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1308 places, 1483 transitions, 4987 flow [2023-01-28 01:46:05,086 INFO L130 PetriNetUnfolder]: 434/2897 cut-off events. [2023-01-28 01:46:05,086 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-01-28 01:46:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 2897 events. 434/2897 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10197 event pairs, 0 based on Foata normal form. 0/2375 useless extension candidates. Maximal degree in co-relation 3836. Up to 88 conditions per place. [2023-01-28 01:46:05,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 2000704 [2023-01-28 01:46:16,261 INFO L134 LiptonReduction]: Checked pairs total: 5029300 [2023-01-28 01:46:16,262 INFO L136 LiptonReduction]: Total number of compositions: 902 [2023-01-28 01:46:16,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:16,263 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:16,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:16,576 INFO L130 PetriNetUnfolder]: 340/1198 cut-off events. [2023-01-28 01:46:16,577 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-01-28 01:46:16,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:16,577 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:46:16,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:16,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:16,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1192364580, now seen corresponding path program 1 times [2023-01-28 01:46:16,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:16,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526397673] [2023-01-28 01:46:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:16,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:16,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:16,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:16,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:16,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-01-28 01:46:16,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:16,712 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:16,712 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:16,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-01-28 01:46:16,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:46:16,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1337 places, 1516 transitions, 5144 flow [2023-01-28 01:46:18,625 INFO L130 PetriNetUnfolder]: 444/2963 cut-off events. [2023-01-28 01:46:18,625 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-01-28 01:46:18,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 2963 events. 444/2963 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10385 event pairs, 0 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 3948. Up to 90 conditions per place. [2023-01-28 01:46:18,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 1337 places, 1516 transitions, 5144 flow [2023-01-28 01:46:18,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1337 places, 1516 transitions, 5144 flow [2023-01-28 01:46:18,825 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:18,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1337 places, 1516 transitions, 5144 flow [2023-01-28 01:46:18,825 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1337 places, 1516 transitions, 5144 flow [2023-01-28 01:46:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1337 places, 1516 transitions, 5144 flow [2023-01-28 01:46:20,761 INFO L130 PetriNetUnfolder]: 444/2963 cut-off events. [2023-01-28 01:46:20,762 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-01-28 01:46:20,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 2963 events. 444/2963 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10385 event pairs, 0 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 3948. Up to 90 conditions per place. [2023-01-28 01:46:21,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 2093696 [2023-01-28 01:46:32,326 INFO L134 LiptonReduction]: Checked pairs total: 5815260 [2023-01-28 01:46:32,326 INFO L136 LiptonReduction]: Total number of compositions: 925 [2023-01-28 01:46:32,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:32,327 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:32,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:32,696 INFO L130 PetriNetUnfolder]: 346/1223 cut-off events. [2023-01-28 01:46:32,696 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-01-28 01:46:32,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:32,696 INFO L208 CegarLoopForPetriNet]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:46:32,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:32,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 436701089, now seen corresponding path program 1 times [2023-01-28 01:46:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:32,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229309535] [2023-01-28 01:46:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:32,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:32,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:32,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:32,831 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:32,831 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:32,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-28 01:46:32,831 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:32,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:32,832 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:32,832 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-01-28 01:46:32,912 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:46:32,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1366 places, 1549 transitions, 5303 flow [2023-01-28 01:46:34,966 INFO L130 PetriNetUnfolder]: 454/3029 cut-off events. [2023-01-28 01:46:34,966 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-01-28 01:46:35,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 3029 events. 454/3029 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10656 event pairs, 0 based on Foata normal form. 0/2483 useless extension candidates. Maximal degree in co-relation 4061. Up to 92 conditions per place. [2023-01-28 01:46:35,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 1366 places, 1549 transitions, 5303 flow [2023-01-28 01:46:35,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1366 places, 1549 transitions, 5303 flow [2023-01-28 01:46:35,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:35,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1366 places, 1549 transitions, 5303 flow [2023-01-28 01:46:35,167 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1366 places, 1549 transitions, 5303 flow [2023-01-28 01:46:35,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1366 places, 1549 transitions, 5303 flow [2023-01-28 01:46:37,132 INFO L130 PetriNetUnfolder]: 454/3029 cut-off events. [2023-01-28 01:46:37,133 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-01-28 01:46:37,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 3029 events. 454/3029 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10656 event pairs, 0 based on Foata normal form. 0/2483 useless extension candidates. Maximal degree in co-relation 4061. Up to 92 conditions per place. [2023-01-28 01:46:37,983 INFO L119 LiptonReduction]: Number of co-enabled transitions 2188800 [2023-01-28 01:46:49,375 INFO L134 LiptonReduction]: Checked pairs total: 5526824 [2023-01-28 01:46:49,376 INFO L136 LiptonReduction]: Total number of compositions: 948 [2023-01-28 01:46:49,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:49,377 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:49,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:49,801 INFO L130 PetriNetUnfolder]: 401/1300 cut-off events. [2023-01-28 01:46:49,801 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-01-28 01:46:49,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:49,801 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:46:49,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:49,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1063894900, now seen corresponding path program 1 times [2023-01-28 01:46:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452794806] [2023-01-28 01:46:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:49,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:50,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:50,017 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:50,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:50,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-28 01:46:50,018 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:50,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:50,018 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:50,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-01-28 01:46:50,109 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:46:50,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1395 places, 1582 transitions, 5464 flow [2023-01-28 01:46:52,137 INFO L130 PetriNetUnfolder]: 464/3095 cut-off events. [2023-01-28 01:46:52,137 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-01-28 01:46:52,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3095 events. 464/3095 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10853 event pairs, 0 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 4175. Up to 94 conditions per place. [2023-01-28 01:46:52,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 1395 places, 1582 transitions, 5464 flow [2023-01-28 01:46:52,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1395 places, 1582 transitions, 5464 flow [2023-01-28 01:46:52,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:52,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1395 places, 1582 transitions, 5464 flow [2023-01-28 01:46:52,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1395 places, 1582 transitions, 5464 flow [2023-01-28 01:46:52,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1395 places, 1582 transitions, 5464 flow [2023-01-28 01:46:54,587 INFO L130 PetriNetUnfolder]: 464/3095 cut-off events. [2023-01-28 01:46:54,587 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-01-28 01:46:54,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3095 events. 464/3095 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10853 event pairs, 0 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 4175. Up to 94 conditions per place. [2023-01-28 01:46:55,276 INFO L119 LiptonReduction]: Number of co-enabled transitions 2286016 [2023-01-28 01:47:06,934 INFO L134 LiptonReduction]: Checked pairs total: 5765521 [2023-01-28 01:47:06,934 INFO L136 LiptonReduction]: Total number of compositions: 969 [2023-01-28 01:47:06,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:47:06,936 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:47:06,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:47:07,381 INFO L130 PetriNetUnfolder]: 410/1330 cut-off events. [2023-01-28 01:47:07,381 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-01-28 01:47:07,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:47:07,381 INFO L208 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:47:07,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:47:07,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:47:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1770312530, now seen corresponding path program 1 times [2023-01-28 01:47:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:47:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736153860] [2023-01-28 01:47:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:47:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:47:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:47:07,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:47:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:47:07,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:47:07,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:47:07,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:47:07,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-28 01:47:07,557 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:47:07,558 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:47:07,558 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:47:07,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-01-28 01:47:07,641 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:47:07,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1424 places, 1615 transitions, 5627 flow [2023-01-28 01:47:09,712 INFO L130 PetriNetUnfolder]: 474/3161 cut-off events. [2023-01-28 01:47:09,712 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-01-28 01:47:09,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 3161 events. 474/3161 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 11086 event pairs, 0 based on Foata normal form. 0/2591 useless extension candidates. Maximal degree in co-relation 4290. Up to 96 conditions per place. [2023-01-28 01:47:09,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 1424 places, 1615 transitions, 5627 flow [2023-01-28 01:47:09,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1424 places, 1615 transitions, 5627 flow [2023-01-28 01:47:09,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:47:09,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1424 places, 1615 transitions, 5627 flow [2023-01-28 01:47:09,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1424 places, 1615 transitions, 5627 flow [2023-01-28 01:47:09,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1424 places, 1615 transitions, 5627 flow [2023-01-28 01:47:12,177 INFO L130 PetriNetUnfolder]: 474/3161 cut-off events. [2023-01-28 01:47:12,177 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-01-28 01:47:12,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 3161 events. 474/3161 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 11086 event pairs, 0 based on Foata normal form. 0/2591 useless extension candidates. Maximal degree in co-relation 4290. Up to 96 conditions per place. [2023-01-28 01:47:13,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 2385344 [2023-01-28 01:47:25,114 INFO L134 LiptonReduction]: Checked pairs total: 6015043 [2023-01-28 01:47:25,114 INFO L136 LiptonReduction]: Total number of compositions: 987 [2023-01-28 01:47:25,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:47:25,116 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:47:25,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:47:25,558 INFO L130 PetriNetUnfolder]: 419/1358 cut-off events. [2023-01-28 01:47:25,558 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-01-28 01:47:25,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:47:25,558 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:47:25,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:47:25,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:47:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash 526248823, now seen corresponding path program 1 times [2023-01-28 01:47:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:47:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599955882] [2023-01-28 01:47:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:47:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:47:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:47:25,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:47:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:47:25,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:47:25,713 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:47:25,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:47:25,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-28 01:47:25,713 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:47:25,713 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:47:25,714 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:47:25,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-01-28 01:47:25,811 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:47:25,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1453 places, 1648 transitions, 5792 flow [2023-01-28 01:47:28,145 INFO L130 PetriNetUnfolder]: 484/3227 cut-off events. [2023-01-28 01:47:28,146 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-01-28 01:47:28,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 3227 events. 484/3227 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11399 event pairs, 0 based on Foata normal form. 0/2645 useless extension candidates. Maximal degree in co-relation 4406. Up to 98 conditions per place. [2023-01-28 01:47:28,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 1453 places, 1648 transitions, 5792 flow [2023-01-28 01:47:28,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1453 places, 1648 transitions, 5792 flow [2023-01-28 01:47:28,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:47:28,377 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1453 places, 1648 transitions, 5792 flow [2023-01-28 01:47:28,377 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1453 places, 1648 transitions, 5792 flow [2023-01-28 01:47:28,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1453 places, 1648 transitions, 5792 flow [2023-01-28 01:47:30,644 INFO L130 PetriNetUnfolder]: 484/3227 cut-off events. [2023-01-28 01:47:30,644 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-01-28 01:47:30,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 3227 events. 484/3227 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11399 event pairs, 0 based on Foata normal form. 0/2645 useless extension candidates. Maximal degree in co-relation 4406. Up to 98 conditions per place. [2023-01-28 01:47:31,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 2486784 [2023-01-28 01:47:43,607 INFO L134 LiptonReduction]: Checked pairs total: 6240525 [2023-01-28 01:47:43,607 INFO L136 LiptonReduction]: Total number of compositions: 1000 [2023-01-28 01:47:43,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:47:43,609 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:47:43,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:47:44,081 INFO L130 PetriNetUnfolder]: 380/1340 cut-off events. [2023-01-28 01:47:44,081 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-01-28 01:47:44,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:47:44,082 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:47:44,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:47:44,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:47:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash -610573142, now seen corresponding path program 1 times [2023-01-28 01:47:44,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:47:44,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566833149] [2023-01-28 01:47:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:47:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:47:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:47:44,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:47:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:47:44,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:47:44,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:47:44,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:47:44,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-28 01:47:44,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:47:44,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:47:44,238 WARN L233 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:47:44,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2023-01-28 01:47:44,375 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:47:44,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1482 places, 1681 transitions, 5959 flow [2023-01-28 01:47:46,624 INFO L130 PetriNetUnfolder]: 494/3293 cut-off events. [2023-01-28 01:47:46,624 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-01-28 01:47:46,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 3293 events. 494/3293 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11613 event pairs, 0 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 4523. Up to 100 conditions per place. [2023-01-28 01:47:46,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 1482 places, 1681 transitions, 5959 flow [2023-01-28 01:47:46,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1482 places, 1681 transitions, 5959 flow [2023-01-28 01:47:46,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:47:46,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1482 places, 1681 transitions, 5959 flow [2023-01-28 01:47:46,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1482 places, 1681 transitions, 5959 flow [2023-01-28 01:47:46,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1482 places, 1681 transitions, 5959 flow [2023-01-28 01:47:49,184 INFO L130 PetriNetUnfolder]: 494/3293 cut-off events. [2023-01-28 01:47:49,184 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-01-28 01:47:49,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 3293 events. 494/3293 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11613 event pairs, 0 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 4523. Up to 100 conditions per place. [2023-01-28 01:47:50,229 INFO L119 LiptonReduction]: Number of co-enabled transitions 2590336 [2023-01-28 01:48:02,348 INFO L134 LiptonReduction]: Checked pairs total: 7252447 [2023-01-28 01:48:02,348 INFO L136 LiptonReduction]: Total number of compositions: 1029 [2023-01-28 01:48:02,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:02,352 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:02,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:02,784 INFO L130 PetriNetUnfolder]: 437/1416 cut-off events. [2023-01-28 01:48:02,784 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-01-28 01:48:02,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:02,785 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:02,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:02,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash -720157999, now seen corresponding path program 1 times [2023-01-28 01:48:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540879458] [2023-01-28 01:48:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:02,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:02,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:02,922 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:02,923 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:02,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-01-28 01:48:02,923 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:02,923 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:02,923 WARN L233 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:02,923 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2023-01-28 01:48:03,076 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:48:03,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1511 places, 1714 transitions, 6128 flow [2023-01-28 01:48:05,414 INFO L130 PetriNetUnfolder]: 504/3359 cut-off events. [2023-01-28 01:48:05,414 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-01-28 01:48:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 3359 events. 504/3359 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11843 event pairs, 0 based on Foata normal form. 0/2753 useless extension candidates. Maximal degree in co-relation 4641. Up to 102 conditions per place. [2023-01-28 01:48:05,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 1511 places, 1714 transitions, 6128 flow [2023-01-28 01:48:05,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1511 places, 1714 transitions, 6128 flow [2023-01-28 01:48:05,679 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:05,679 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1511 places, 1714 transitions, 6128 flow [2023-01-28 01:48:05,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1511 places, 1714 transitions, 6128 flow [2023-01-28 01:48:05,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1511 places, 1714 transitions, 6128 flow [2023-01-28 01:48:08,194 INFO L130 PetriNetUnfolder]: 504/3359 cut-off events. [2023-01-28 01:48:08,194 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-01-28 01:48:08,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 3359 events. 504/3359 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11843 event pairs, 0 based on Foata normal form. 0/2753 useless extension candidates. Maximal degree in co-relation 4641. Up to 102 conditions per place. [2023-01-28 01:48:09,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 2696000 [2023-01-28 01:48:21,919 INFO L134 LiptonReduction]: Checked pairs total: 6776485 [2023-01-28 01:48:21,919 INFO L136 LiptonReduction]: Total number of compositions: 1042 [2023-01-28 01:48:21,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:21,921 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:21,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:22,476 INFO L130 PetriNetUnfolder]: 446/1446 cut-off events. [2023-01-28 01:48:22,476 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-01-28 01:48:22,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:22,477 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:22,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:22,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1381193960, now seen corresponding path program 1 times [2023-01-28 01:48:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:22,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686222290] [2023-01-28 01:48:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:22,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:22,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:22,637 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:22,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:22,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-28 01:48:22,637 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:22,638 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:22,638 WARN L233 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:22,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2023-01-28 01:48:22,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:48:22,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1540 places, 1747 transitions, 6299 flow [2023-01-28 01:48:25,428 INFO L130 PetriNetUnfolder]: 514/3425 cut-off events. [2023-01-28 01:48:25,429 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-01-28 01:48:25,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 3425 events. 514/3425 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12039 event pairs, 0 based on Foata normal form. 0/2807 useless extension candidates. Maximal degree in co-relation 4760. Up to 104 conditions per place. [2023-01-28 01:48:25,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 1540 places, 1747 transitions, 6299 flow [2023-01-28 01:48:25,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1540 places, 1747 transitions, 6299 flow [2023-01-28 01:48:25,673 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:25,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1540 places, 1747 transitions, 6299 flow [2023-01-28 01:48:25,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1540 places, 1747 transitions, 6299 flow [2023-01-28 01:48:25,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1540 places, 1747 transitions, 6299 flow [2023-01-28 01:48:28,205 INFO L130 PetriNetUnfolder]: 514/3425 cut-off events. [2023-01-28 01:48:28,205 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-01-28 01:48:28,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 3425 events. 514/3425 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12039 event pairs, 0 based on Foata normal form. 0/2807 useless extension candidates. Maximal degree in co-relation 4760. Up to 104 conditions per place. [2023-01-28 01:48:29,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 2803776 [2023-01-28 01:48:41,834 INFO L134 LiptonReduction]: Checked pairs total: 7008943 [2023-01-28 01:48:41,834 INFO L136 LiptonReduction]: Total number of compositions: 1053 [2023-01-28 01:48:41,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:41,836 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:41,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:42,306 INFO L130 PetriNetUnfolder]: 404/1424 cut-off events. [2023-01-28 01:48:42,306 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-01-28 01:48:42,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:42,306 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:42,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:42,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash -357643941, now seen corresponding path program 1 times [2023-01-28 01:48:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:42,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838425607] [2023-01-28 01:48:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:42,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:42,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:42,475 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:42,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:42,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-28 01:48:42,475 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:42,475 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:42,475 WARN L233 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:42,475 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2023-01-28 01:48:42,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:48:42,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1569 places, 1780 transitions, 6472 flow [2023-01-28 01:48:45,144 INFO L130 PetriNetUnfolder]: 524/3491 cut-off events. [2023-01-28 01:48:45,144 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-01-28 01:48:45,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5026 conditions, 3491 events. 524/3491 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 12249 event pairs, 0 based on Foata normal form. 0/2861 useless extension candidates. Maximal degree in co-relation 4880. Up to 106 conditions per place. [2023-01-28 01:48:45,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 1569 places, 1780 transitions, 6472 flow [2023-01-28 01:48:45,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1569 places, 1780 transitions, 6472 flow [2023-01-28 01:48:45,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:48:45,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1569 places, 1780 transitions, 6472 flow [2023-01-28 01:48:45,416 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1569 places, 1780 transitions, 6472 flow [2023-01-28 01:48:45,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1569 places, 1780 transitions, 6472 flow [2023-01-28 01:48:48,088 INFO L130 PetriNetUnfolder]: 524/3491 cut-off events. [2023-01-28 01:48:48,088 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-01-28 01:48:48,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5026 conditions, 3491 events. 524/3491 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 12249 event pairs, 0 based on Foata normal form. 0/2861 useless extension candidates. Maximal degree in co-relation 4880. Up to 106 conditions per place. [2023-01-28 01:48:49,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 2913664 [2023-01-28 01:49:02,016 INFO L134 LiptonReduction]: Checked pairs total: 7322986 [2023-01-28 01:49:02,016 INFO L136 LiptonReduction]: Total number of compositions: 1085 [2023-01-28 01:49:02,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:02,017 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:02,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:02,598 INFO L130 PetriNetUnfolder]: 464/1504 cut-off events. [2023-01-28 01:49:02,598 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-01-28 01:49:02,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:02,598 INFO L208 CegarLoopForPetriNet]: trace histogram [53, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:49:02,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:02,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1023106925, now seen corresponding path program 1 times [2023-01-28 01:49:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458421258] [2023-01-28 01:49:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:02,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:02,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:02,769 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:02,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:02,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-01-28 01:49:02,770 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:02,770 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:02,770 WARN L233 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:02,770 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2023-01-28 01:49:02,866 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:49:02,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1598 places, 1813 transitions, 6647 flow [2023-01-28 01:49:05,495 INFO L130 PetriNetUnfolder]: 534/3557 cut-off events. [2023-01-28 01:49:05,495 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-01-28 01:49:05,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 3557 events. 534/3557 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12655 event pairs, 0 based on Foata normal form. 0/2915 useless extension candidates. Maximal degree in co-relation 5001. Up to 108 conditions per place. [2023-01-28 01:49:05,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 1598 places, 1813 transitions, 6647 flow [2023-01-28 01:49:05,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1598 places, 1813 transitions, 6647 flow [2023-01-28 01:49:05,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:49:05,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1598 places, 1813 transitions, 6647 flow [2023-01-28 01:49:05,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1598 places, 1813 transitions, 6647 flow [2023-01-28 01:49:05,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1598 places, 1813 transitions, 6647 flow [2023-01-28 01:49:08,496 INFO L130 PetriNetUnfolder]: 534/3557 cut-off events. [2023-01-28 01:49:08,496 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-01-28 01:49:08,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 3557 events. 534/3557 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12655 event pairs, 0 based on Foata normal form. 0/2915 useless extension candidates. Maximal degree in co-relation 5001. Up to 108 conditions per place. [2023-01-28 01:49:09,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 3025664 [2023-01-28 01:49:23,534 INFO L134 LiptonReduction]: Checked pairs total: 7582358 [2023-01-28 01:49:23,535 INFO L136 LiptonReduction]: Total number of compositions: 1096 [2023-01-28 01:49:23,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:23,536 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:23,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:24,228 INFO L130 PetriNetUnfolder]: 473/1533 cut-off events. [2023-01-28 01:49:24,228 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-01-28 01:49:24,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:24,229 INFO L208 CegarLoopForPetriNet]: trace histogram [54, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:49:24,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:24,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1196267033, now seen corresponding path program 1 times [2023-01-28 01:49:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794193034] [2023-01-28 01:49:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:24,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:24,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:24,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:24,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:24,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-28 01:49:24,404 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:24,404 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:24,404 WARN L233 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:24,404 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2023-01-28 01:49:24,516 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:49:24,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1627 places, 1846 transitions, 6824 flow [2023-01-28 01:49:27,445 INFO L130 PetriNetUnfolder]: 544/3623 cut-off events. [2023-01-28 01:49:27,446 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-01-28 01:49:27,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 3623 events. 544/3623 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12773 event pairs, 0 based on Foata normal form. 0/2969 useless extension candidates. Maximal degree in co-relation 5123. Up to 110 conditions per place. [2023-01-28 01:49:27,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 1627 places, 1846 transitions, 6824 flow [2023-01-28 01:49:27,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1627 places, 1846 transitions, 6824 flow [2023-01-28 01:49:27,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:49:27,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1627 places, 1846 transitions, 6824 flow [2023-01-28 01:49:27,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1627 places, 1846 transitions, 6824 flow [2023-01-28 01:49:27,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1627 places, 1846 transitions, 6824 flow [2023-01-28 01:49:30,569 INFO L130 PetriNetUnfolder]: 544/3623 cut-off events. [2023-01-28 01:49:30,570 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-01-28 01:49:30,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 3623 events. 544/3623 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12773 event pairs, 0 based on Foata normal form. 0/2969 useless extension candidates. Maximal degree in co-relation 5123. Up to 110 conditions per place. [2023-01-28 01:49:31,834 INFO L119 LiptonReduction]: Number of co-enabled transitions 3139776 [2023-01-28 01:49:45,543 INFO L134 LiptonReduction]: Checked pairs total: 7927177 [2023-01-28 01:49:45,543 INFO L136 LiptonReduction]: Total number of compositions: 1131 [2023-01-28 01:49:45,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:45,544 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:45,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:46,228 INFO L130 PetriNetUnfolder]: 482/1562 cut-off events. [2023-01-28 01:49:46,228 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-01-28 01:49:46,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:46,228 INFO L208 CegarLoopForPetriNet]: trace histogram [55, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:49:46,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:46,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash 238949616, now seen corresponding path program 1 times [2023-01-28 01:49:46,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:46,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632115790] [2023-01-28 01:49:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:46,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:46,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:46,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:46,424 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:46,424 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:46,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-28 01:49:46,424 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:46,424 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:46,424 WARN L233 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:46,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2023-01-28 01:49:46,524 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:49:46,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1656 places, 1879 transitions, 7003 flow [2023-01-28 01:49:49,376 INFO L130 PetriNetUnfolder]: 554/3689 cut-off events. [2023-01-28 01:49:49,376 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-01-28 01:49:49,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 3689 events. 554/3689 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12792 event pairs, 0 based on Foata normal form. 0/3023 useless extension candidates. Maximal degree in co-relation 5246. Up to 112 conditions per place. [2023-01-28 01:49:49,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 1656 places, 1879 transitions, 7003 flow [2023-01-28 01:49:49,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1656 places, 1879 transitions, 7003 flow [2023-01-28 01:49:49,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:49:49,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1656 places, 1879 transitions, 7003 flow [2023-01-28 01:49:49,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1656 places, 1879 transitions, 7003 flow [2023-01-28 01:49:49,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1656 places, 1879 transitions, 7003 flow [2023-01-28 01:49:52,583 INFO L130 PetriNetUnfolder]: 554/3689 cut-off events. [2023-01-28 01:49:52,583 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-01-28 01:49:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 3689 events. 554/3689 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12792 event pairs, 0 based on Foata normal form. 0/3023 useless extension candidates. Maximal degree in co-relation 5246. Up to 112 conditions per place. [2023-01-28 01:49:53,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 3256000 [2023-01-28 01:50:08,032 INFO L134 LiptonReduction]: Checked pairs total: 8176187 [2023-01-28 01:50:08,032 INFO L136 LiptonReduction]: Total number of compositions: 1145 [2023-01-28 01:50:08,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:08,034 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:08,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:08,704 INFO L130 PetriNetUnfolder]: 491/1591 cut-off events. [2023-01-28 01:50:08,704 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-01-28 01:50:08,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:08,704 INFO L208 CegarLoopForPetriNet]: trace histogram [56, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:08,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:08,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash -75315408, now seen corresponding path program 1 times [2023-01-28 01:50:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257813338] [2023-01-28 01:50:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:08,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:08,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:08,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:08,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:08,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:08,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-28 01:50:08,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:08,917 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:08,917 WARN L233 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:08,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2023-01-28 01:50:09,033 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:50:09,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1685 places, 1912 transitions, 7184 flow [2023-01-28 01:50:12,035 INFO L130 PetriNetUnfolder]: 564/3755 cut-off events. [2023-01-28 01:50:12,035 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-01-28 01:50:12,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 3755 events. 564/3755 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13008 event pairs, 0 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 5370. Up to 114 conditions per place. [2023-01-28 01:50:12,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 1685 places, 1912 transitions, 7184 flow [2023-01-28 01:50:12,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1685 places, 1912 transitions, 7184 flow [2023-01-28 01:50:12,363 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:12,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1685 places, 1912 transitions, 7184 flow [2023-01-28 01:50:12,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1685 places, 1912 transitions, 7184 flow [2023-01-28 01:50:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1685 places, 1912 transitions, 7184 flow [2023-01-28 01:50:15,375 INFO L130 PetriNetUnfolder]: 564/3755 cut-off events. [2023-01-28 01:50:15,375 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-01-28 01:50:15,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 3755 events. 564/3755 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13008 event pairs, 0 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 5370. Up to 114 conditions per place. [2023-01-28 01:50:16,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 3374336 [2023-01-28 01:50:31,675 INFO L134 LiptonReduction]: Checked pairs total: 9401740 [2023-01-28 01:50:31,675 INFO L136 LiptonReduction]: Total number of compositions: 1171 [2023-01-28 01:50:31,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:31,676 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:31,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:32,259 INFO L130 PetriNetUnfolder]: 500/1620 cut-off events. [2023-01-28 01:50:32,259 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-01-28 01:50:32,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:32,260 INFO L208 CegarLoopForPetriNet]: trace histogram [57, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:32,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:32,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 476500371, now seen corresponding path program 1 times [2023-01-28 01:50:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:32,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470218606] [2023-01-28 01:50:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:32,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:32,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:32,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:32,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:32,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:32,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-28 01:50:32,454 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:32,454 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:32,454 WARN L233 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:32,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2023-01-28 01:50:32,629 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:50:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1714 places, 1945 transitions, 7367 flow [2023-01-28 01:50:35,813 INFO L130 PetriNetUnfolder]: 574/3821 cut-off events. [2023-01-28 01:50:35,814 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-01-28 01:50:36,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3821 events. 574/3821 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13358 event pairs, 0 based on Foata normal form. 0/3131 useless extension candidates. Maximal degree in co-relation 5495. Up to 116 conditions per place. [2023-01-28 01:50:36,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 1714 places, 1945 transitions, 7367 flow [2023-01-28 01:50:36,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1714 places, 1945 transitions, 7367 flow [2023-01-28 01:50:36,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:36,101 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1714 places, 1945 transitions, 7367 flow [2023-01-28 01:50:36,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1714 places, 1945 transitions, 7367 flow [2023-01-28 01:50:36,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1714 places, 1945 transitions, 7367 flow [2023-01-28 01:50:39,289 INFO L130 PetriNetUnfolder]: 574/3821 cut-off events. [2023-01-28 01:50:39,289 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-01-28 01:50:39,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3821 events. 574/3821 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13358 event pairs, 0 based on Foata normal form. 0/3131 useless extension candidates. Maximal degree in co-relation 5495. Up to 116 conditions per place. [2023-01-28 01:50:40,665 INFO L119 LiptonReduction]: Number of co-enabled transitions 3494784 [2023-01-28 01:50:55,278 INFO L134 LiptonReduction]: Checked pairs total: 8730108 [2023-01-28 01:50:55,278 INFO L136 LiptonReduction]: Total number of compositions: 1189 [2023-01-28 01:50:55,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:55,279 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;@724b6532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:55,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:55,948 INFO L130 PetriNetUnfolder]: 509/1649 cut-off events. [2023-01-28 01:50:55,949 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-01-28 01:50:55,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:55,949 INFO L208 CegarLoopForPetriNet]: trace histogram [58, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:55,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:55,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 565858301, now seen corresponding path program 1 times [2023-01-28 01:50:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630022899] [2023-01-28 01:50:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:56,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:56,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:56,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:56,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-28 01:50:56,147 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:56,148 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:56,148 WARN L233 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:56,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2023-01-28 01:50:56,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:50:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1743 places, 1978 transitions, 7552 flow