/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_20-callback_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:40:00,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:40:00,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:40:00,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:40:00,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:40:00,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:40:00,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:40:00,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:40:00,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:40:00,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:40:00,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:40:00,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:40:00,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:40:00,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:40:00,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:40:00,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:40:00,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:40:00,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:40:00,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:40:00,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:40:00,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:40:00,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:40:00,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:40:00,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:40:00,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:40:00,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:40:00,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:40:00,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:40:00,938 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 01:40:00,956 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:40:00,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:40:00,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:40:00,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:40:00,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:40:00,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:40:00,962 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:40:00,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:40:00,962 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:40:00,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:40:00,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:40:00,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:40:00,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:40:00,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:40:00,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:40:00,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:40:00,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:40:00,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:40:00,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:40:00,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:40:00,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:40:00,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:40:01,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:40:01,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:40:01,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:40:01,195 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:40:01,195 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:40:01,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-01-28 01:40:02,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:40:02,404 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:40:02,404 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-01-28 01:40:02,413 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e49ff47/299ee131fcc643a2aa7b3a2a668340f7/FLAG2403c69e9 [2023-01-28 01:40:02,423 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e49ff47/299ee131fcc643a2aa7b3a2a668340f7 [2023-01-28 01:40:02,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:40:02,429 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:40:02,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:40:02,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:40:02,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:40:02,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbd1800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02, skipping insertion in model container [2023-01-28 01:40:02,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:40:02,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:40:02,683 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_20-callback_racefree.i[30212,30225] [2023-01-28 01:40:02,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:40:02,719 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:40:02,750 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_20-callback_racefree.i[30212,30225] [2023-01-28 01:40:02,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:40:02,795 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 01:40:02,799 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:40:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02 WrapperNode [2023-01-28 01:40:02,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:40:02,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:40:02,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:40:02,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:40:02,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,854 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2023-01-28 01:40:02,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:40:02,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:40:02,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:40:02,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:40:02,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:40:02,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:40:02,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:40:02,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:40:02,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (1/1) ... [2023-01-28 01:40:02,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:40:02,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:40:02,943 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 01:40:02,958 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 01:40:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:40:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:40:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:40:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:40:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:40:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:40:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:40:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:40:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:40:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:40:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:40:02,970 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 01:40:03,056 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:40:03,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:40:03,233 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:40:03,238 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:40:03,239 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-01-28 01:40:03,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:40:03 BoogieIcfgContainer [2023-01-28 01:40:03,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:40:03,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:40:03,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:40:03,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:40:03,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:40:02" (1/3) ... [2023-01-28 01:40:03,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dafa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:40:03, skipping insertion in model container [2023-01-28 01:40:03,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:02" (2/3) ... [2023-01-28 01:40:03,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dafa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:40:03, skipping insertion in model container [2023-01-28 01:40:03,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:40:03" (3/3) ... [2023-01-28 01:40:03,245 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-01-28 01:40:03,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:40:03,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:40:03,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:40:03,296 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:40:03,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 137 transitions, 282 flow [2023-01-28 01:40:03,371 INFO L130 PetriNetUnfolder]: 26/207 cut-off events. [2023-01-28 01:40:03,371 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:40:03,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 26/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 534 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-01-28 01:40:03,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 137 transitions, 282 flow [2023-01-28 01:40:03,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 132 transitions, 269 flow [2023-01-28 01:40:03,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:03,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 132 transitions, 269 flow [2023-01-28 01:40:03,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 132 transitions, 269 flow [2023-01-28 01:40:03,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 132 transitions, 269 flow [2023-01-28 01:40:03,423 INFO L130 PetriNetUnfolder]: 25/202 cut-off events. [2023-01-28 01:40:03,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:40:03,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 25/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 496 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-01-28 01:40:03,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-01-28 01:40:05,509 INFO L134 LiptonReduction]: Checked pairs total: 4319 [2023-01-28 01:40:05,509 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-01-28 01:40:05,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:05,529 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:05,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:05,533 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-01-28 01:40:05,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:40:05,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:05,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:40:05,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:05,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2020137906, now seen corresponding path program 1 times [2023-01-28 01:40:05,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162801951] [2023-01-28 01:40:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:05,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:05,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:05,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:05,695 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:05,695 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:40:05,697 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:05,700 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:05,701 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:05,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:40:05,722 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:40:05,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-01-28 01:40:05,769 INFO L130 PetriNetUnfolder]: 43/323 cut-off events. [2023-01-28 01:40:05,769 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:40:05,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-01-28 01:40:05,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-01-28 01:40:05,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-01-28 01:40:05,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:05,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-01-28 01:40:05,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-01-28 01:40:05,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-01-28 01:40:05,796 INFO L130 PetriNetUnfolder]: 43/323 cut-off events. [2023-01-28 01:40:05,796 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:40:05,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-01-28 01:40:05,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-01-28 01:40:08,509 INFO L134 LiptonReduction]: Checked pairs total: 11783 [2023-01-28 01:40:08,509 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-01-28 01:40:08,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:08,511 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:08,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:08,515 INFO L130 PetriNetUnfolder]: 18/63 cut-off events. [2023-01-28 01:40:08,515 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:40:08,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:08,515 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:40:08,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:08,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash -661544501, now seen corresponding path program 1 times [2023-01-28 01:40:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857065682] [2023-01-28 01:40:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:08,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:08,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:08,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:08,574 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:08,574 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:08,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:40:08,574 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:08,574 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:08,575 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:08,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:40:08,592 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:40:08,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 181 transitions, 392 flow [2023-01-28 01:40:08,630 INFO L130 PetriNetUnfolder]: 65/470 cut-off events. [2023-01-28 01:40:08,631 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:40:08,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 470 events. 65/470 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1841 event pairs, 1 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 331. Up to 16 conditions per place. [2023-01-28 01:40:08,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 181 transitions, 392 flow [2023-01-28 01:40:08,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 181 transitions, 392 flow [2023-01-28 01:40:08,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:08,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 181 transitions, 392 flow [2023-01-28 01:40:08,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 181 transitions, 392 flow [2023-01-28 01:40:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 181 transitions, 392 flow [2023-01-28 01:40:08,663 INFO L130 PetriNetUnfolder]: 65/470 cut-off events. [2023-01-28 01:40:08,663 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:40:08,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 470 events. 65/470 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1841 event pairs, 1 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 331. Up to 16 conditions per place. [2023-01-28 01:40:08,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 12360 [2023-01-28 01:40:11,034 INFO L134 LiptonReduction]: Checked pairs total: 20764 [2023-01-28 01:40:11,034 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-01-28 01:40:11,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:11,036 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:11,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:11,041 INFO L130 PetriNetUnfolder]: 31/103 cut-off events. [2023-01-28 01:40:11,041 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:40:11,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:11,041 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:40:11,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:11,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:11,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1292801290, now seen corresponding path program 1 times [2023-01-28 01:40:11,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:11,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586775440] [2023-01-28 01:40:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:11,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:11,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:11,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:11,113 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:11,113 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:11,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:40:11,113 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:11,113 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:11,114 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:11,114 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:40:11,137 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:40:11,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 203 transitions, 450 flow [2023-01-28 01:40:11,191 INFO L130 PetriNetUnfolder]: 99/681 cut-off events. [2023-01-28 01:40:11,191 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:40:11,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 681 events. 99/681 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2931 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 490. Up to 32 conditions per place. [2023-01-28 01:40:11,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 203 transitions, 450 flow [2023-01-28 01:40:11,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 203 transitions, 450 flow [2023-01-28 01:40:11,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:11,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 203 transitions, 450 flow [2023-01-28 01:40:11,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 203 transitions, 450 flow [2023-01-28 01:40:11,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 203 transitions, 450 flow [2023-01-28 01:40:11,240 INFO L130 PetriNetUnfolder]: 99/681 cut-off events. [2023-01-28 01:40:11,241 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:40:11,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 681 events. 99/681 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2931 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 490. Up to 32 conditions per place. [2023-01-28 01:40:11,256 INFO L119 LiptonReduction]: Number of co-enabled transitions 18320 [2023-01-28 01:40:13,920 INFO L134 LiptonReduction]: Checked pairs total: 35645 [2023-01-28 01:40:13,920 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-01-28 01:40:13,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:13,925 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:13,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:13,940 INFO L130 PetriNetUnfolder]: 43/144 cut-off events. [2023-01-28 01:40:13,940 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:40:13,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:13,940 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:13,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:13,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2005753740, now seen corresponding path program 1 times [2023-01-28 01:40:13,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470160888] [2023-01-28 01:40:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:13,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:14,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:14,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:14,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:14,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:40:14,027 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:14,028 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:14,028 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:14,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:40:14,042 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:40:14,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 510 flow [2023-01-28 01:40:14,126 INFO L130 PetriNetUnfolder]: 161/1024 cut-off events. [2023-01-28 01:40:14,127 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:40:14,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 1024 events. 161/1024 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4926 event pairs, 23 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 726. Up to 80 conditions per place. [2023-01-28 01:40:14,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 225 transitions, 510 flow [2023-01-28 01:40:14,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 225 transitions, 510 flow [2023-01-28 01:40:14,136 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:14,137 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 225 transitions, 510 flow [2023-01-28 01:40:14,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 225 transitions, 510 flow [2023-01-28 01:40:14,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 510 flow [2023-01-28 01:40:14,214 INFO L130 PetriNetUnfolder]: 161/1024 cut-off events. [2023-01-28 01:40:14,214 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:40:14,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 1024 events. 161/1024 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4926 event pairs, 23 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 726. Up to 80 conditions per place. [2023-01-28 01:40:14,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 25200 [2023-01-28 01:40:16,987 INFO L134 LiptonReduction]: Checked pairs total: 51265 [2023-01-28 01:40:16,987 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-01-28 01:40:16,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:16,989 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:16,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:16,997 INFO L130 PetriNetUnfolder]: 60/198 cut-off events. [2023-01-28 01:40:16,997 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:40:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:16,997 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:16,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:16,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 785398442, now seen corresponding path program 1 times [2023-01-28 01:40:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381550849] [2023-01-28 01:40:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:17,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:17,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:17,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:17,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:17,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:40:17,072 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:17,072 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:17,072 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:17,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:40:17,095 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:40:17,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 247 transitions, 572 flow [2023-01-28 01:40:17,244 INFO L130 PetriNetUnfolder]: 287/1639 cut-off events. [2023-01-28 01:40:17,244 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:40:17,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1639 events. 287/1639 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9198 event pairs, 72 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 1123. Up to 192 conditions per place. [2023-01-28 01:40:17,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 247 transitions, 572 flow [2023-01-28 01:40:17,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 247 transitions, 572 flow [2023-01-28 01:40:17,266 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:17,266 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 247 transitions, 572 flow [2023-01-28 01:40:17,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 247 transitions, 572 flow [2023-01-28 01:40:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 247 transitions, 572 flow [2023-01-28 01:40:17,432 INFO L130 PetriNetUnfolder]: 287/1639 cut-off events. [2023-01-28 01:40:17,432 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:40:17,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1639 events. 287/1639 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9198 event pairs, 72 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 1123. Up to 192 conditions per place. [2023-01-28 01:40:17,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 33000 [2023-01-28 01:40:19,686 INFO L134 LiptonReduction]: Checked pairs total: 63698 [2023-01-28 01:40:19,686 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-01-28 01:40:19,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:19,695 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:19,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:19,712 INFO L130 PetriNetUnfolder]: 79/260 cut-off events. [2023-01-28 01:40:19,713 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:40:19,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:19,713 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:19,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:19,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash 241311924, now seen corresponding path program 1 times [2023-01-28 01:40:19,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753139482] [2023-01-28 01:40:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:19,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:19,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:19,745 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:19,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:19,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:40:19,745 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:19,745 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:19,745 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:19,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:40:19,763 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:40:19,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 269 transitions, 636 flow [2023-01-28 01:40:20,056 INFO L130 PetriNetUnfolder]: 557/2814 cut-off events. [2023-01-28 01:40:20,056 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:40:20,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 2814 events. 557/2814 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18682 event pairs, 201 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 1857. Up to 448 conditions per place. [2023-01-28 01:40:20,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 269 transitions, 636 flow [2023-01-28 01:40:20,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 269 transitions, 636 flow [2023-01-28 01:40:20,096 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:20,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 269 transitions, 636 flow [2023-01-28 01:40:20,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 269 transitions, 636 flow [2023-01-28 01:40:20,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 269 transitions, 636 flow [2023-01-28 01:40:20,366 INFO L130 PetriNetUnfolder]: 557/2814 cut-off events. [2023-01-28 01:40:20,366 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:40:20,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 2814 events. 557/2814 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18682 event pairs, 201 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 1857. Up to 448 conditions per place. [2023-01-28 01:40:20,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 41720 [2023-01-28 01:40:23,166 INFO L134 LiptonReduction]: Checked pairs total: 82693 [2023-01-28 01:40:23,167 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-01-28 01:40:23,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:23,168 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:23,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:23,184 INFO L130 PetriNetUnfolder]: 101/340 cut-off events. [2023-01-28 01:40:23,184 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:40:23,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:23,184 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:23,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:23,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash 389342412, now seen corresponding path program 1 times [2023-01-28 01:40:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:23,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169193174] [2023-01-28 01:40:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:23,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:23,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:23,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:23,217 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:23,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:23,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:40:23,217 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:23,217 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:23,217 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:23,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:40:23,232 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:40:23,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 291 transitions, 702 flow [2023-01-28 01:40:23,827 INFO L130 PetriNetUnfolder]: 1147/5141 cut-off events. [2023-01-28 01:40:23,827 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:40:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6226 conditions, 5141 events. 1147/5141 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40461 event pairs, 522 based on Foata normal form. 0/4498 useless extension candidates. Maximal degree in co-relation 3296. Up to 1024 conditions per place. [2023-01-28 01:40:23,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 291 transitions, 702 flow [2023-01-28 01:40:23,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 291 transitions, 702 flow [2023-01-28 01:40:23,910 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:23,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 291 transitions, 702 flow [2023-01-28 01:40:23,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 291 transitions, 702 flow [2023-01-28 01:40:23,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 291 transitions, 702 flow [2023-01-28 01:40:24,450 INFO L130 PetriNetUnfolder]: 1147/5141 cut-off events. [2023-01-28 01:40:24,450 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:40:24,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6226 conditions, 5141 events. 1147/5141 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40461 event pairs, 522 based on Foata normal form. 0/4498 useless extension candidates. Maximal degree in co-relation 3296. Up to 1024 conditions per place. [2023-01-28 01:40:24,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 51360 [2023-01-28 01:40:26,830 INFO L134 LiptonReduction]: Checked pairs total: 101923 [2023-01-28 01:40:26,831 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-01-28 01:40:26,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:26,834 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:26,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:26,857 INFO L130 PetriNetUnfolder]: 134/449 cut-off events. [2023-01-28 01:40:26,857 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:40:26,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:26,857 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:26,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:26,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1357732211, now seen corresponding path program 1 times [2023-01-28 01:40:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146554783] [2023-01-28 01:40:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:26,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:26,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:26,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:26,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:26,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:40:26,908 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:26,909 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:26,909 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:26,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:40:26,931 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:40:26,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 313 transitions, 770 flow [2023-01-28 01:40:28,174 INFO L130 PetriNetUnfolder]: 2441/9836 cut-off events. [2023-01-28 01:40:28,174 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:40:28,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 9836 events. 2441/9836 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 89049 event pairs, 1291 based on Foata normal form. 0/8666 useless extension candidates. Maximal degree in co-relation 6208. Up to 2304 conditions per place. [2023-01-28 01:40:28,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 313 transitions, 770 flow [2023-01-28 01:40:28,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 313 transitions, 770 flow [2023-01-28 01:40:28,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:28,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 313 transitions, 770 flow [2023-01-28 01:40:28,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 313 transitions, 770 flow [2023-01-28 01:40:28,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 313 transitions, 770 flow [2023-01-28 01:40:30,037 INFO L130 PetriNetUnfolder]: 2441/9836 cut-off events. [2023-01-28 01:40:30,038 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:40:30,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 9836 events. 2441/9836 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 89049 event pairs, 1291 based on Foata normal form. 0/8666 useless extension candidates. Maximal degree in co-relation 6208. Up to 2304 conditions per place. [2023-01-28 01:40:30,304 INFO L119 LiptonReduction]: Number of co-enabled transitions 61920 [2023-01-28 01:40:32,930 INFO L134 LiptonReduction]: Checked pairs total: 123214 [2023-01-28 01:40:32,933 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-01-28 01:40:32,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:32,951 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:32,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:32,993 INFO L130 PetriNetUnfolder]: 178/594 cut-off events. [2023-01-28 01:40:32,993 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:40:32,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:32,994 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:32,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:32,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1062179894, now seen corresponding path program 1 times [2023-01-28 01:40:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764712458] [2023-01-28 01:40:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:33,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:33,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:33,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:33,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:33,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:40:33,041 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:33,043 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:33,044 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:33,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:40:33,067 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:40:33,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 335 transitions, 840 flow [2023-01-28 01:40:36,263 INFO L130 PetriNetUnfolder]: 5271/19395 cut-off events. [2023-01-28 01:40:36,263 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:40:36,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24601 conditions, 19395 events. 5271/19395 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198630 event pairs, 3084 based on Foata normal form. 0/17186 useless extension candidates. Maximal degree in co-relation 12193. Up to 5120 conditions per place. [2023-01-28 01:40:36,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 335 transitions, 840 flow [2023-01-28 01:40:36,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 335 transitions, 840 flow [2023-01-28 01:40:36,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:36,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 335 transitions, 840 flow [2023-01-28 01:40:36,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 335 transitions, 840 flow [2023-01-28 01:40:36,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 335 transitions, 840 flow [2023-01-28 01:40:39,739 INFO L130 PetriNetUnfolder]: 5271/19395 cut-off events. [2023-01-28 01:40:39,739 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:40:39,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24601 conditions, 19395 events. 5271/19395 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198630 event pairs, 3084 based on Foata normal form. 0/17186 useless extension candidates. Maximal degree in co-relation 12193. Up to 5120 conditions per place. [2023-01-28 01:40:40,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 73400 [2023-01-28 01:40:44,271 INFO L134 LiptonReduction]: Checked pairs total: 167530 [2023-01-28 01:40:44,271 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-01-28 01:40:44,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:40:44,272 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:40:44,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:40:44,334 INFO L130 PetriNetUnfolder]: 259/832 cut-off events. [2023-01-28 01:40:44,334 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:40:44,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:40:44,334 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:40:44,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:40:44,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:40:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -97483463, now seen corresponding path program 1 times [2023-01-28 01:40:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:40:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392863947] [2023-01-28 01:40:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:40:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:40:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:44,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:40:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:40:44,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:40:44,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:40:44,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:40:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:40:44,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:40:44,391 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:40:44,391 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:40:44,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:40:44,413 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:40:44,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 357 transitions, 912 flow [2023-01-28 01:40:51,476 INFO L130 PetriNetUnfolder]: 11429/38938 cut-off events. [2023-01-28 01:40:51,476 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:40:51,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50302 conditions, 38938 events. 11429/38938 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443362 event pairs, 7181 based on Foata normal form. 0/34666 useless extension candidates. Maximal degree in co-relation 24579. Up to 11264 conditions per place. [2023-01-28 01:40:51,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 357 transitions, 912 flow [2023-01-28 01:40:52,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 357 transitions, 912 flow [2023-01-28 01:40:52,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:40:52,350 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 357 transitions, 912 flow [2023-01-28 01:40:52,351 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 357 transitions, 912 flow [2023-01-28 01:40:52,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 357 transitions, 912 flow [2023-01-28 01:40:59,408 INFO L130 PetriNetUnfolder]: 11429/38938 cut-off events. [2023-01-28 01:40:59,408 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:40:59,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50302 conditions, 38938 events. 11429/38938 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443362 event pairs, 7181 based on Foata normal form. 0/34666 useless extension candidates. Maximal degree in co-relation 24579. Up to 11264 conditions per place. [2023-01-28 01:41:00,992 INFO L119 LiptonReduction]: Number of co-enabled transitions 85800 [2023-01-28 01:41:04,202 INFO L134 LiptonReduction]: Checked pairs total: 176415 [2023-01-28 01:41:04,202 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-01-28 01:41:04,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:04,204 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:04,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:04,270 INFO L130 PetriNetUnfolder]: 380/1166 cut-off events. [2023-01-28 01:41:04,270 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:41:04,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:04,270 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:41:04,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:04,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash 865679517, now seen corresponding path program 1 times [2023-01-28 01:41:04,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:04,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399383723] [2023-01-28 01:41:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:04,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:04,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:04,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:04,347 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:04,347 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:41:04,348 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:04,348 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:04,348 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:04,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:41:04,375 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:41:04,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 379 transitions, 986 flow [2023-01-28 01:41:19,640 INFO L130 PetriNetUnfolder]: 24755/78961 cut-off events. [2023-01-28 01:41:19,640 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:41:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103652 conditions, 78961 events. 24755/78961 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 977733 event pairs, 16398 based on Foata normal form. 0/70578 useless extension candidates. Maximal degree in co-relation 50278. Up to 24576 conditions per place. [2023-01-28 01:41:21,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 379 transitions, 986 flow [2023-01-28 01:41:22,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 379 transitions, 986 flow [2023-01-28 01:41:22,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:41:22,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 379 transitions, 986 flow [2023-01-28 01:41:22,389 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 379 transitions, 986 flow [2023-01-28 01:41:22,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 379 transitions, 986 flow [2023-01-28 01:41:38,135 INFO L130 PetriNetUnfolder]: 24755/78961 cut-off events. [2023-01-28 01:41:38,136 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:41:39,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103652 conditions, 78961 events. 24755/78961 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 977733 event pairs, 16398 based on Foata normal form. 0/70578 useless extension candidates. Maximal degree in co-relation 50278. Up to 24576 conditions per place. [2023-01-28 01:41:43,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 99120 [2023-01-28 01:41:46,777 INFO L134 LiptonReduction]: Checked pairs total: 207785 [2023-01-28 01:41:46,777 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-01-28 01:41:46,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:41:46,779 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:41:46,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:41:46,895 INFO L130 PetriNetUnfolder]: 599/1718 cut-off events. [2023-01-28 01:41:46,895 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:41:46,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:41:46,895 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 01:41:46,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:41:46,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:41:46,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1704822281, now seen corresponding path program 1 times [2023-01-28 01:41:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:41:46,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567623962] [2023-01-28 01:41:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:41:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:41:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:46,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:41:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:41:46,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:41:46,936 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:41:46,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:41:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:41:46,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:41:46,937 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:41:46,937 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:41:46,937 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:41:46,959 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:41:46,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 401 transitions, 1062 flow [2023-01-28 01:42:22,056 INFO L130 PetriNetUnfolder]: 53441/160968 cut-off events. [2023-01-28 01:42:22,056 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:42:26,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214347 conditions, 160968 events. 53441/160968 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177826 event pairs, 36879 based on Foata normal form. 0/144378 useless extension candidates. Maximal degree in co-relation 103626. Up to 53248 conditions per place. [2023-01-28 01:42:26,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 401 transitions, 1062 flow [2023-01-28 01:42:28,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 401 transitions, 1062 flow [2023-01-28 01:42:28,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:28,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 401 transitions, 1062 flow [2023-01-28 01:42:28,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 401 transitions, 1062 flow [2023-01-28 01:42:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 401 transitions, 1062 flow [2023-01-28 01:43:04,092 INFO L130 PetriNetUnfolder]: 53441/160968 cut-off events. [2023-01-28 01:43:04,093 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:43:08,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214347 conditions, 160968 events. 53441/160968 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177826 event pairs, 36879 based on Foata normal form. 0/144378 useless extension candidates. Maximal degree in co-relation 103626. Up to 53248 conditions per place. [2023-01-28 01:43:20,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 113360 [2023-01-28 01:43:23,032 INFO L134 LiptonReduction]: Checked pairs total: 241381 [2023-01-28 01:43:23,032 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-01-28 01:43:23,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:23,033 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;@379b254a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:23,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:23,215 INFO L130 PetriNetUnfolder]: 954/2566 cut-off events. [2023-01-28 01:43:23,215 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:43:23,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:23,215 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 01:43:23,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:23,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 363102414, now seen corresponding path program 1 times [2023-01-28 01:43:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:23,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960173042] [2023-01-28 01:43:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:23,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:23,249 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:23,249 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:23,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:23,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:43:23,249 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:23,250 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:23,250 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:23,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:43:23,277 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:43:23,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 423 transitions, 1140 flow [2023-01-28 01:44:46,488 INFO L130 PetriNetUnfolder]: 114895/328991 cut-off events. [2023-01-28 01:44:46,488 INFO L131 PetriNetUnfolder]: For 115234/115234 co-relation queries the response was YES.