./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:57:35,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:57:35,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:57:35,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:57:35,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:57:35,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:57:35,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:57:35,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:57:35,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:57:35,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:57:35,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:57:35,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:57:35,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:57:35,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:57:35,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:57:35,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:57:35,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:57:35,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:57:35,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:57:35,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:57:35,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:57:35,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:57:35,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:57:35,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:57:35,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:57:35,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:57:35,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:57:35,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:57:35,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:57:35,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:57:35,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:57:35,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:57:35,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:57:35,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:57:35,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:57:35,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:57:35,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:57:35,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:57:35,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:57:35,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:57:35,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:57:35,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:57:35,863 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:57:35,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:57:35,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:57:35,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:57:35,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:57:35,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:57:35,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:57:35,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:57:35,867 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:57:35,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:57:35,867 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:57:35,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:57:35,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:57:35,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:57:35,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:57:35,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:57:35,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:57:35,869 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:57:35,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:57:35,869 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:57:35,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:57:35,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:57:35,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:57:35,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:57:35,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:57:35,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:57:35,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:57:35,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:57:35,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:57:35,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:57:35,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:57:35,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:57:35,872 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:57:35,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:57:35,872 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:57:35,872 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:57:36,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:57:36,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:57:36,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:57:36,179 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:57:36,180 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:57:36,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-09-01 10:57:37,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:57:37,421 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:57:37,422 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-09-01 10:57:37,443 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3571654/f20dc3056e234e7bbf54b2b449d61b9e/FLAGe67becea7 [2023-09-01 10:57:37,457 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3571654/f20dc3056e234e7bbf54b2b449d61b9e [2023-09-01 10:57:37,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:57:37,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:57:37,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:57:37,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:57:37,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:57:37,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4b870c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37, skipping insertion in model container [2023-09-01 10:57:37,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:57:37,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:57:37,755 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_24-sound_lock_racing.i[30176,30189] [2023-09-01 10:57:37,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:57:37,801 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:57:37,838 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_24-sound_lock_racing.i[30176,30189] [2023-09-01 10:57:37,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:57:37,897 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:57:37,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37 WrapperNode [2023-09-01 10:57:37,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:57:37,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:57:37,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:57:37,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:57:37,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,941 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-09-01 10:57:37,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:57:37,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:57:37,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:57:37,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:57:37,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:57:37,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:57:37,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:57:37,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:57:37,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (1/1) ... [2023-09-01 10:57:37,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:57:38,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:57:38,018 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) [2023-09-01 10:57:38,048 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 [2023-09-01 10:57:38,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:57:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:57:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:57:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:57:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:57:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:57:38,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:57:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:57:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:57:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:57:38,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:57:38,066 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:57:38,181 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:57:38,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:57:38,390 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:57:38,396 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:57:38,397 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:57:38,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:57:38 BoogieIcfgContainer [2023-09-01 10:57:38,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:57:38,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:57:38,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:57:38,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:57:38,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:57:37" (1/3) ... [2023-09-01 10:57:38,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7586742a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:57:38, skipping insertion in model container [2023-09-01 10:57:38,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:57:37" (2/3) ... [2023-09-01 10:57:38,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7586742a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:57:38, skipping insertion in model container [2023-09-01 10:57:38,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:57:38" (3/3) ... [2023-09-01 10:57:38,423 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-09-01 10:57:38,430 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:57:38,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:57:38,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:57:38,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:57:38,486 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:57:38,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 114 transitions, 236 flow [2023-09-01 10:57:38,571 INFO L130 PetriNetUnfolder]: 18/147 cut-off events. [2023-09-01 10:57:38,572 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:57:38,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 147 events. 18/147 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-09-01 10:57:38,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 114 transitions, 236 flow [2023-09-01 10:57:38,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 109 transitions, 223 flow [2023-09-01 10:57:38,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:38,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 109 transitions, 223 flow [2023-09-01 10:57:38,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 109 transitions, 223 flow [2023-09-01 10:57:38,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 109 transitions, 223 flow [2023-09-01 10:57:38,709 INFO L130 PetriNetUnfolder]: 17/142 cut-off events. [2023-09-01 10:57:38,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:57:38,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 142 events. 17/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 289 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-09-01 10:57:38,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-09-01 10:57:42,536 INFO L134 LiptonReduction]: Checked pairs total: 3935 [2023-09-01 10:57:42,537 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-09-01 10:57:42,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:42,560 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:42,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:42,572 INFO L130 PetriNetUnfolder]: 3/26 cut-off events. [2023-09-01 10:57:42,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:57:42,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:42,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:57:42,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:42,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 120607350, now seen corresponding path program 1 times [2023-09-01 10:57:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404234908] [2023-09-01 10:57:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:42,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:42,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:42,804 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:42,805 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:42,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:57:42,808 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:42,814 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:42,815 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:42,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:57:42,846 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:57:42,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 306 flow [2023-09-01 10:57:42,907 INFO L130 PetriNetUnfolder]: 32/234 cut-off events. [2023-09-01 10:57:42,907 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:57:42,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 234 events. 32/234 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 616 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-09-01 10:57:42,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 144 transitions, 306 flow [2023-09-01 10:57:42,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 144 transitions, 306 flow [2023-09-01 10:57:42,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:42,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 144 transitions, 306 flow [2023-09-01 10:57:42,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 144 transitions, 306 flow [2023-09-01 10:57:42,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 306 flow [2023-09-01 10:57:42,950 INFO L130 PetriNetUnfolder]: 32/234 cut-off events. [2023-09-01 10:57:42,950 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:57:42,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 234 events. 32/234 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 616 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-09-01 10:57:42,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-09-01 10:57:46,285 INFO L134 LiptonReduction]: Checked pairs total: 16853 [2023-09-01 10:57:46,286 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-09-01 10:57:46,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:46,289 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:46,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:46,294 INFO L130 PetriNetUnfolder]: 12/61 cut-off events. [2023-09-01 10:57:46,294 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:57:46,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:46,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:57:46,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:46,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 586384534, now seen corresponding path program 1 times [2023-09-01 10:57:46,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:46,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398687072] [2023-09-01 10:57:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:46,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:46,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:46,343 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:46,344 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:46,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:57:46,344 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:46,345 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:46,347 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:46,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:57:46,372 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:57:46,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 174 transitions, 378 flow [2023-09-01 10:57:46,415 INFO L130 PetriNetUnfolder]: 51/352 cut-off events. [2023-09-01 10:57:46,416 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:57:46,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 352 events. 51/352 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1075 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 242. Up to 16 conditions per place. [2023-09-01 10:57:46,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 174 transitions, 378 flow [2023-09-01 10:57:46,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 174 transitions, 378 flow [2023-09-01 10:57:46,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:46,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 174 transitions, 378 flow [2023-09-01 10:57:46,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 174 transitions, 378 flow [2023-09-01 10:57:46,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 174 transitions, 378 flow [2023-09-01 10:57:46,462 INFO L130 PetriNetUnfolder]: 51/352 cut-off events. [2023-09-01 10:57:46,462 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:57:46,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 352 events. 51/352 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1075 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 242. Up to 16 conditions per place. [2023-09-01 10:57:46,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 12432 [2023-09-01 10:57:49,899 INFO L134 LiptonReduction]: Checked pairs total: 32754 [2023-09-01 10:57:49,900 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-09-01 10:57:49,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:49,903 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:49,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:49,910 INFO L130 PetriNetUnfolder]: 19/91 cut-off events. [2023-09-01 10:57:49,910 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:57:49,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:49,911 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:57:49,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:49,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash 966560219, now seen corresponding path program 1 times [2023-09-01 10:57:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:49,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388710778] [2023-09-01 10:57:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:49,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:49,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:49,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:49,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:49,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:57:49,954 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:49,954 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:49,954 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:49,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:57:49,975 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:57:49,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 204 transitions, 452 flow [2023-09-01 10:57:50,042 INFO L130 PetriNetUnfolder]: 82/534 cut-off events. [2023-09-01 10:57:50,043 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:57:50,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 534 events. 82/534 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1958 event pairs, 6 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 372. Up to 32 conditions per place. [2023-09-01 10:57:50,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 204 transitions, 452 flow [2023-09-01 10:57:50,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 204 transitions, 452 flow [2023-09-01 10:57:50,054 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:50,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 204 transitions, 452 flow [2023-09-01 10:57:50,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 204 transitions, 452 flow [2023-09-01 10:57:50,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 204 transitions, 452 flow [2023-09-01 10:57:50,121 INFO L130 PetriNetUnfolder]: 82/534 cut-off events. [2023-09-01 10:57:50,122 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:57:50,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 534 events. 82/534 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1958 event pairs, 6 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 372. Up to 32 conditions per place. [2023-09-01 10:57:50,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 20048 [2023-09-01 10:57:53,635 INFO L134 LiptonReduction]: Checked pairs total: 61661 [2023-09-01 10:57:53,636 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-09-01 10:57:53,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:53,638 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:53,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:53,648 INFO L130 PetriNetUnfolder]: 29/132 cut-off events. [2023-09-01 10:57:53,648 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:57:53,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:53,648 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:53,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:53,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -978959003, now seen corresponding path program 1 times [2023-09-01 10:57:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350536261] [2023-09-01 10:57:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:53,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:53,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:53,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:53,691 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:53,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:53,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:57:53,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:53,692 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:53,692 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:53,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:57:53,711 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:57:53,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 234 transitions, 528 flow [2023-09-01 10:57:53,834 INFO L130 PetriNetUnfolder]: 141/848 cut-off events. [2023-09-01 10:57:53,835 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:57:53,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 848 events. 141/848 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3650 event pairs, 23 based on Foata normal form. 0/717 useless extension candidates. Maximal degree in co-relation 579. Up to 80 conditions per place. [2023-09-01 10:57:53,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 234 transitions, 528 flow [2023-09-01 10:57:53,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 234 transitions, 528 flow [2023-09-01 10:57:53,849 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:53,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 234 transitions, 528 flow [2023-09-01 10:57:53,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 234 transitions, 528 flow [2023-09-01 10:57:53,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 234 transitions, 528 flow [2023-09-01 10:57:53,965 INFO L130 PetriNetUnfolder]: 141/848 cut-off events. [2023-09-01 10:57:53,965 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:57:53,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 848 events. 141/848 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3650 event pairs, 23 based on Foata normal form. 0/717 useless extension candidates. Maximal degree in co-relation 579. Up to 80 conditions per place. [2023-09-01 10:57:53,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-09-01 10:57:57,448 INFO L134 LiptonReduction]: Checked pairs total: 84233 [2023-09-01 10:57:57,449 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-09-01 10:57:57,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:57,451 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:57,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:57,465 INFO L130 PetriNetUnfolder]: 46/191 cut-off events. [2023-09-01 10:57:57,465 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:57:57,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:57,466 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:57,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:57,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1490539703, now seen corresponding path program 1 times [2023-09-01 10:57:57,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:57,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892295034] [2023-09-01 10:57:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:57,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:57,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:57,510 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:57,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:57,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:57:57,511 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:57,511 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:57,512 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:57,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:57:57,532 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:57:57,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 264 transitions, 606 flow [2023-09-01 10:57:57,774 INFO L130 PetriNetUnfolder]: 264/1434 cut-off events. [2023-09-01 10:57:57,774 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:57:57,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 1434 events. 264/1434 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7660 event pairs, 72 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 947. Up to 192 conditions per place. [2023-09-01 10:57:57,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 264 transitions, 606 flow [2023-09-01 10:57:57,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 264 transitions, 606 flow [2023-09-01 10:57:57,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:57,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 264 transitions, 606 flow [2023-09-01 10:57:57,805 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 264 transitions, 606 flow [2023-09-01 10:57:57,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 264 transitions, 606 flow [2023-09-01 10:57:58,022 INFO L130 PetriNetUnfolder]: 264/1434 cut-off events. [2023-09-01 10:57:58,023 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:57:58,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 1434 events. 264/1434 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7660 event pairs, 72 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 947. Up to 192 conditions per place. [2023-09-01 10:57:58,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 40488 [2023-09-01 10:58:01,582 INFO L134 LiptonReduction]: Checked pairs total: 132482 [2023-09-01 10:58:01,583 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-09-01 10:58:01,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:01,585 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:01,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:01,604 INFO L130 PetriNetUnfolder]: 62/252 cut-off events. [2023-09-01 10:58:01,605 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:58:01,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:01,605 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:01,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:01,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash 582511041, now seen corresponding path program 1 times [2023-09-01 10:58:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837762531] [2023-09-01 10:58:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:01,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:01,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:01,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:01,644 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:01,644 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:01,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:58:01,645 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:01,645 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:01,645 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:01,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:58:01,666 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:58:01,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 294 transitions, 686 flow [2023-09-01 10:58:02,112 INFO L130 PetriNetUnfolder]: 531/2580 cut-off events. [2023-09-01 10:58:02,113 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:58:02,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 2580 events. 531/2580 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 16936 event pairs, 201 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 1652. Up to 448 conditions per place. [2023-09-01 10:58:02,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 294 transitions, 686 flow [2023-09-01 10:58:02,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 294 transitions, 686 flow [2023-09-01 10:58:02,214 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:02,214 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 294 transitions, 686 flow [2023-09-01 10:58:02,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 294 transitions, 686 flow [2023-09-01 10:58:02,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 294 transitions, 686 flow [2023-09-01 10:58:02,675 INFO L130 PetriNetUnfolder]: 531/2580 cut-off events. [2023-09-01 10:58:02,675 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:58:02,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 2580 events. 531/2580 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 16936 event pairs, 201 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 1652. Up to 448 conditions per place. [2023-09-01 10:58:02,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 53312 [2023-09-01 10:58:06,300 INFO L134 LiptonReduction]: Checked pairs total: 157731 [2023-09-01 10:58:06,300 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-09-01 10:58:06,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:06,302 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:06,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:06,331 INFO L130 PetriNetUnfolder]: 83/331 cut-off events. [2023-09-01 10:58:06,331 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:58:06,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:06,332 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:06,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:06,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1494121730, now seen corresponding path program 1 times [2023-09-01 10:58:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:06,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572795510] [2023-09-01 10:58:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:06,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:06,409 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:06,415 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:06,415 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:06,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:58:06,415 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:06,416 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:06,416 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:06,416 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:58:06,448 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:58:06,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 324 transitions, 768 flow [2023-09-01 10:58:07,439 INFO L130 PetriNetUnfolder]: 1118/4878 cut-off events. [2023-09-01 10:58:07,439 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:58:07,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5963 conditions, 4878 events. 1118/4878 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38151 event pairs, 522 based on Foata normal form. 0/4263 useless extension candidates. Maximal degree in co-relation 3062. Up to 1024 conditions per place. [2023-09-01 10:58:07,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 324 transitions, 768 flow [2023-09-01 10:58:07,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 324 transitions, 768 flow [2023-09-01 10:58:07,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:07,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 324 transitions, 768 flow [2023-09-01 10:58:07,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 324 transitions, 768 flow [2023-09-01 10:58:07,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 324 transitions, 768 flow [2023-09-01 10:58:08,323 INFO L130 PetriNetUnfolder]: 1118/4878 cut-off events. [2023-09-01 10:58:08,323 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:58:08,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5963 conditions, 4878 events. 1118/4878 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38151 event pairs, 522 based on Foata normal form. 0/4263 useless extension candidates. Maximal degree in co-relation 3062. Up to 1024 conditions per place. [2023-09-01 10:58:08,646 INFO L119 LiptonReduction]: Number of co-enabled transitions 67872 [2023-09-01 10:58:12,380 INFO L134 LiptonReduction]: Checked pairs total: 229777 [2023-09-01 10:58:12,380 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-09-01 10:58:12,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:12,382 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:12,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:12,426 INFO L130 PetriNetUnfolder]: 113/438 cut-off events. [2023-09-01 10:58:12,426 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:58:12,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:12,427 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:12,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:12,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash -969354740, now seen corresponding path program 1 times [2023-09-01 10:58:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:12,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538814603] [2023-09-01 10:58:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:12,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:12,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:12,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:12,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:12,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:12,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:58:12,488 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:12,489 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:12,489 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:12,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:58:12,521 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:58:12,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 354 transitions, 852 flow [2023-09-01 10:58:14,552 INFO L130 PetriNetUnfolder]: 2409/9544 cut-off events. [2023-09-01 10:58:14,552 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:58:14,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 9544 events. 2409/9544 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86295 event pairs, 1291 based on Foata normal form. 0/8405 useless extension candidates. Maximal degree in co-relation 5945. Up to 2304 conditions per place. [2023-09-01 10:58:14,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 304 places, 354 transitions, 852 flow [2023-09-01 10:58:14,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 304 places, 354 transitions, 852 flow [2023-09-01 10:58:14,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:14,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 354 transitions, 852 flow [2023-09-01 10:58:14,793 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 354 transitions, 852 flow [2023-09-01 10:58:14,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 354 transitions, 852 flow [2023-09-01 10:58:16,503 INFO L130 PetriNetUnfolder]: 2409/9544 cut-off events. [2023-09-01 10:58:16,504 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:58:16,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 9544 events. 2409/9544 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86295 event pairs, 1291 based on Foata normal form. 0/8405 useless extension candidates. Maximal degree in co-relation 5945. Up to 2304 conditions per place. [2023-09-01 10:58:16,893 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-09-01 10:58:20,662 INFO L134 LiptonReduction]: Checked pairs total: 284273 [2023-09-01 10:58:20,662 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-09-01 10:58:20,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:20,664 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:20,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:20,718 INFO L130 PetriNetUnfolder]: 150/572 cut-off events. [2023-09-01 10:58:20,719 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:58:20,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:20,719 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:20,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:20,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1600287616, now seen corresponding path program 1 times [2023-09-01 10:58:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596346445] [2023-09-01 10:58:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:20,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:20,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:20,765 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:20,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:20,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:58:20,766 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:20,769 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:20,769 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:20,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:58:20,802 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:58:20,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 384 transitions, 938 flow [2023-09-01 10:58:24,598 INFO L130 PetriNetUnfolder]: 5236/19074 cut-off events. [2023-09-01 10:58:24,598 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:58:24,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 19074 events. 5236/19074 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 197678 event pairs, 3084 based on Foata normal form. 0/16899 useless extension candidates. Maximal degree in co-relation 11901. Up to 5120 conditions per place. [2023-09-01 10:58:24,866 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 384 transitions, 938 flow [2023-09-01 10:58:25,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 384 transitions, 938 flow [2023-09-01 10:58:25,048 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:25,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 384 transitions, 938 flow [2023-09-01 10:58:25,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 384 transitions, 938 flow [2023-09-01 10:58:25,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 384 transitions, 938 flow [2023-09-01 10:58:28,726 INFO L130 PetriNetUnfolder]: 5236/19074 cut-off events. [2023-09-01 10:58:28,726 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:58:29,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 19074 events. 5236/19074 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 197678 event pairs, 3084 based on Foata normal form. 0/16899 useless extension candidates. Maximal degree in co-relation 11901. Up to 5120 conditions per place. [2023-09-01 10:58:29,772 INFO L119 LiptonReduction]: Number of co-enabled transitions 102200 [2023-09-01 10:58:33,593 INFO L134 LiptonReduction]: Checked pairs total: 353544 [2023-09-01 10:58:33,593 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-09-01 10:58:33,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:33,595 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:33,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:33,678 INFO L130 PetriNetUnfolder]: 224/798 cut-off events. [2023-09-01 10:58:33,678 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:58:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:33,678 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:33,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:33,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1701458796, now seen corresponding path program 1 times [2023-09-01 10:58:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992205018] [2023-09-01 10:58:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:33,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:33,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:33,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:33,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:33,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:58:33,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:33,725 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:33,726 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:33,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:58:33,755 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:58:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 414 transitions, 1026 flow [2023-09-01 10:58:42,123 INFO L130 PetriNetUnfolder]: 11391/38588 cut-off events. [2023-09-01 10:58:42,123 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:58:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49952 conditions, 38588 events. 11391/38588 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 444319 event pairs, 7181 based on Foata normal form. 0/34353 useless extension candidates. Maximal degree in co-relation 24258. Up to 11264 conditions per place. [2023-09-01 10:58:42,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 414 transitions, 1026 flow [2023-09-01 10:58:43,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 414 transitions, 1026 flow [2023-09-01 10:58:43,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:43,451 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 414 transitions, 1026 flow [2023-09-01 10:58:43,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 414 transitions, 1026 flow [2023-09-01 10:58:43,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 414 transitions, 1026 flow [2023-09-01 10:58:51,968 INFO L130 PetriNetUnfolder]: 11391/38588 cut-off events. [2023-09-01 10:58:51,969 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:58:52,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49952 conditions, 38588 events. 11391/38588 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 444319 event pairs, 7181 based on Foata normal form. 0/34353 useless extension candidates. Maximal degree in co-relation 24258. Up to 11264 conditions per place. [2023-09-01 10:58:54,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 121968 [2023-09-01 10:58:58,127 INFO L134 LiptonReduction]: Checked pairs total: 380004 [2023-09-01 10:58:58,127 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-09-01 10:58:58,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:58,128 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:58,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:58,222 INFO L130 PetriNetUnfolder]: 349/1145 cut-off events. [2023-09-01 10:58:58,222 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:58:58,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:58,222 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:58,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:58,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:58,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1673985508, now seen corresponding path program 1 times [2023-09-01 10:58:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:58,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425405953] [2023-09-01 10:58:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:58,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:58,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:58,270 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:58,270 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:58,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:58:58,271 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:58,271 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:58,271 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:58,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:58:58,303 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:58:58,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 444 transitions, 1116 flow [2023-09-01 10:59:16,768 INFO L130 PetriNetUnfolder]: 24714/78582 cut-off events. [2023-09-01 10:59:16,768 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:59:18,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103273 conditions, 78582 events. 24714/78582 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 975416 event pairs, 16398 based on Foata normal form. 0/70239 useless extension candidates. Maximal degree in co-relation 49928. Up to 24576 conditions per place. [2023-09-01 10:59:18,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 444 transitions, 1116 flow [2023-09-01 10:59:20,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 444 transitions, 1116 flow [2023-09-01 10:59:20,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:20,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 444 transitions, 1116 flow [2023-09-01 10:59:20,245 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 444 transitions, 1116 flow [2023-09-01 10:59:20,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 444 transitions, 1116 flow [2023-09-01 10:59:39,096 INFO L130 PetriNetUnfolder]: 24714/78582 cut-off events. [2023-09-01 10:59:39,096 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:59:43,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103273 conditions, 78582 events. 24714/78582 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 975416 event pairs, 16398 based on Foata normal form. 0/70239 useless extension candidates. Maximal degree in co-relation 49928. Up to 24576 conditions per place. [2023-09-01 10:59:47,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 143472 [2023-09-01 10:59:51,095 INFO L134 LiptonReduction]: Checked pairs total: 503631 [2023-09-01 10:59:51,095 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-09-01 10:59:51,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:51,098 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:51,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:51,255 INFO L130 PetriNetUnfolder]: 572/1710 cut-off events. [2023-09-01 10:59:51,255 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:59:51,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:51,255 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:51,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:51,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash -232206149, now seen corresponding path program 1 times [2023-09-01 10:59:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:51,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716110581] [2023-09-01 10:59:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:51,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:51,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:51,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:51,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:59:51,300 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:51,301 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:51,301 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:51,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:59:51,330 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:59:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 474 transitions, 1208 flow [2023-09-01 11:00:32,414 INFO L130 PetriNetUnfolder]: 53397/160560 cut-off events. [2023-09-01 11:00:32,415 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:00:40,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213939 conditions, 160560 events. 53397/160560 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 2176454 event pairs, 36879 based on Foata normal form. 0/144013 useless extension candidates. Maximal degree in co-relation 103247. Up to 53248 conditions per place. [2023-09-01 11:00:40,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 474 transitions, 1208 flow [2023-09-01 11:00:43,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 474 transitions, 1208 flow [2023-09-01 11:00:43,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:43,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 474 transitions, 1208 flow [2023-09-01 11:00:43,999 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 474 transitions, 1208 flow [2023-09-01 11:00:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 474 transitions, 1208 flow [2023-09-01 11:01:25,487 INFO L130 PetriNetUnfolder]: 53397/160560 cut-off events. [2023-09-01 11:01:25,488 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:01:34,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213939 conditions, 160560 events. 53397/160560 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 2176454 event pairs, 36879 based on Foata normal form. 0/144013 useless extension candidates. Maximal degree in co-relation 103247. Up to 53248 conditions per place. [2023-09-01 11:01:47,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 166712 [2023-09-01 11:01:52,179 INFO L134 LiptonReduction]: Checked pairs total: 585581 [2023-09-01 11:01:52,179 INFO L136 LiptonReduction]: Total number of compositions: 278 [2023-09-01 11:01:52,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:52,181 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=true, 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;@3a807693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:52,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:52,442 INFO L130 PetriNetUnfolder]: 913/2530 cut-off events. [2023-09-01 11:01:52,442 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 11:01:52,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:52,442 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:52,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:52,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 781601055, now seen corresponding path program 1 times [2023-09-01 11:01:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:52,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173790772] [2023-09-01 11:01:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:52,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:52,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:52,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:52,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:52,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:52,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:01:52,521 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:52,522 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:52,522 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:52,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 11:01:52,558 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 11:01:52,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 504 transitions, 1302 flow