./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_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_81-list_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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --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 11:12:12,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:12:12,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:12:12,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:12:12,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:12:12,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:12:12,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:12:12,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:12:12,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:12:12,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:12:12,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:12:12,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:12:12,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:12:12,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:12:12,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:12:12,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:12:12,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:12:12,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:12:12,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:12:12,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:12:12,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:12:12,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:12:12,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:12:12,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:12:12,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:12:12,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:12:12,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:12:12,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:12:12,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:12:12,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:12:12,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:12:12,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:12:12,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:12:12,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:12:12,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:12:12,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:12:12,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:12:12,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:12:12,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:12:12,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:12:12,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:12:12,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:12:12,790 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:12:12,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:12:12,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:12:12,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:12:12,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:12:12,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:12:12,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:12:12,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:12:12,793 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:12:12,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:12:12,794 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:12:12,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:12:12,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:12:12,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:12:12,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:12:12,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:12:12,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:12:12,795 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:12:12,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:12:12,795 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:12:12,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:12:12,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:12:12,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:12:12,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:12:12,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:12:12,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:12:12,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:12:12,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:12:12,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:12:12,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:12:12,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:12:12,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:12:12,797 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:12:12,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:12:12,798 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:12:12,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:12:13,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:12:13,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:12:13,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:12:13,076 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:12:13,077 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:12:13,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-09-01 11:12:13,901 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:12:14,147 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:12:14,148 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-09-01 11:12:14,159 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f373127ff/d60c8fd579364c7a84d857ca7c4e109f/FLAG0ed72a39b [2023-09-01 11:12:14,170 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f373127ff/d60c8fd579364c7a84d857ca7c4e109f [2023-09-01 11:12:14,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:12:14,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:12:14,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:12:14,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:12:14,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:12:14,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638710c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14, skipping insertion in model container [2023-09-01 11:12:14,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:12:14,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:12:14,547 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_81-list_racing.i[47038,47051] [2023-09-01 11:12:14,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:12:14,592 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:12:14,625 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_81-list_racing.i[47038,47051] [2023-09-01 11:12:14,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:12:14,707 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:12:14,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14 WrapperNode [2023-09-01 11:12:14,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:12:14,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:12:14,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:12:14,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:12:14,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,761 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2023-09-01 11:12:14,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:12:14,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:12:14,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:12:14,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:12:14,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:12:14,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:12:14,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:12:14,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:12:14,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (1/1) ... [2023-09-01 11:12:14,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:12:14,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:12:14,838 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 11:12:14,865 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 11:12:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:12:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 11:12:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 11:12:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 11:12:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:12:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:12:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 11:12:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:12:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:12:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:12:14,872 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 11:12:15,033 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:12:15,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:12:15,290 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:12:15,295 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:12:15,295 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-09-01 11:12:15,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:12:15 BoogieIcfgContainer [2023-09-01 11:12:15,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:12:15,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:12:15,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:12:15,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:12:15,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:12:14" (1/3) ... [2023-09-01 11:12:15,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102b1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:12:15, skipping insertion in model container [2023-09-01 11:12:15,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:14" (2/3) ... [2023-09-01 11:12:15,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102b1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:12:15, skipping insertion in model container [2023-09-01 11:12:15,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:12:15" (3/3) ... [2023-09-01 11:12:15,314 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-09-01 11:12:15,319 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:12:15,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:12:15,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:12:15,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:12:15,398 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:12:15,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 209 transitions, 440 flow [2023-09-01 11:12:15,531 INFO L130 PetriNetUnfolder]: 52/398 cut-off events. [2023-09-01 11:12:15,532 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2023-09-01 11:12:15,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 398 events. 52/398 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1606 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 205. Up to 8 conditions per place. [2023-09-01 11:12:15,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 209 transitions, 440 flow [2023-09-01 11:12:15,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 207 transitions, 430 flow [2023-09-01 11:12:15,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:15,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 207 transitions, 430 flow [2023-09-01 11:12:15,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 207 transitions, 430 flow [2023-09-01 11:12:15,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 207 transitions, 430 flow [2023-09-01 11:12:15,624 INFO L130 PetriNetUnfolder]: 48/386 cut-off events. [2023-09-01 11:12:15,625 INFO L131 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2023-09-01 11:12:15,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 386 events. 48/386 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1533 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-09-01 11:12:15,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 12564 [2023-09-01 11:12:20,506 INFO L134 LiptonReduction]: Checked pairs total: 21299 [2023-09-01 11:12:20,506 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-09-01 11:12:20,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:20,519 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;@3bf7e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:20,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:12:20,522 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-09-01 11:12:20,522 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:12:20,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:20,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:12:20,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:20,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1532212723, now seen corresponding path program 1 times [2023-09-01 11:12:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022156594] [2023-09-01 11:12:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:20,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:20,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:20,674 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:20,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:12:20,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:12:20,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:12:20,676 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:20,678 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:12:20,678 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:20,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:12:20,728 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:12:20,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 323 transitions, 694 flow [2023-09-01 11:12:20,871 INFO L130 PetriNetUnfolder]: 191/1179 cut-off events. [2023-09-01 11:12:20,871 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2023-09-01 11:12:20,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 1179 events. 191/1179 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7271 event pairs, 2 based on Foata normal form. 0/992 useless extension candidates. Maximal degree in co-relation 745. Up to 32 conditions per place. [2023-09-01 11:12:20,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 323 transitions, 694 flow [2023-09-01 11:12:20,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 323 transitions, 694 flow [2023-09-01 11:12:20,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:20,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 323 transitions, 694 flow [2023-09-01 11:12:20,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 323 transitions, 694 flow [2023-09-01 11:12:20,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 323 transitions, 694 flow [2023-09-01 11:12:21,016 INFO L130 PetriNetUnfolder]: 191/1179 cut-off events. [2023-09-01 11:12:21,017 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2023-09-01 11:12:21,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 1179 events. 191/1179 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7271 event pairs, 2 based on Foata normal form. 0/992 useless extension candidates. Maximal degree in co-relation 745. Up to 32 conditions per place. [2023-09-01 11:12:21,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 51412 [2023-09-01 11:12:27,024 INFO L134 LiptonReduction]: Checked pairs total: 101735 [2023-09-01 11:12:27,025 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-09-01 11:12:27,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:27,032 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@3bf7e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:27,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:12:27,049 INFO L130 PetriNetUnfolder]: 13/88 cut-off events. [2023-09-01 11:12:27,049 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 11:12:27,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:27,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:12:27,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:27,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash -792283344, now seen corresponding path program 1 times [2023-09-01 11:12:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:27,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661454466] [2023-09-01 11:12:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:27,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:27,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:27,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:27,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:27,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:12:27,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:12:27,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:12:27,115 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:27,116 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:12:27,116 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:27,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:12:27,156 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:12:27,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 437 transitions, 952 flow [2023-09-01 11:12:27,852 INFO L130 PetriNetUnfolder]: 664/3284 cut-off events. [2023-09-01 11:12:27,853 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2023-09-01 11:12:27,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 3284 events. 664/3284 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 24950 event pairs, 64 based on Foata normal form. 0/2791 useless extension candidates. Maximal degree in co-relation 2153. Up to 192 conditions per place. [2023-09-01 11:12:27,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 437 transitions, 952 flow [2023-09-01 11:12:27,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 437 transitions, 952 flow [2023-09-01 11:12:27,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:27,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 437 transitions, 952 flow [2023-09-01 11:12:27,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 437 transitions, 952 flow [2023-09-01 11:12:27,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 437 transitions, 952 flow [2023-09-01 11:12:28,592 INFO L130 PetriNetUnfolder]: 664/3284 cut-off events. [2023-09-01 11:12:28,593 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2023-09-01 11:12:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 3284 events. 664/3284 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 24950 event pairs, 64 based on Foata normal form. 0/2791 useless extension candidates. Maximal degree in co-relation 2153. Up to 192 conditions per place. [2023-09-01 11:12:28,860 INFO L119 LiptonReduction]: Number of co-enabled transitions 115164 [2023-09-01 11:12:35,935 INFO L134 LiptonReduction]: Checked pairs total: 234918 [2023-09-01 11:12:35,935 INFO L136 LiptonReduction]: Total number of compositions: 331 [2023-09-01 11:12:35,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:35,937 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;@3bf7e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:35,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:12:35,966 INFO L130 PetriNetUnfolder]: 50/231 cut-off events. [2023-09-01 11:12:35,966 INFO L131 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2023-09-01 11:12:35,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:35,966 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:12:35,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:35,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash 855084516, now seen corresponding path program 1 times [2023-09-01 11:12:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:35,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880558393] [2023-09-01 11:12:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:36,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:36,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:36,048 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:36,049 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:12:36,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:12:36,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:12:36,049 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:36,050 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:12:36,050 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:36,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:12:36,096 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 11:12:36,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 551 transitions, 1214 flow [2023-09-01 11:12:38,515 INFO L130 PetriNetUnfolder]: 2659/10385 cut-off events. [2023-09-01 11:12:38,516 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2023-09-01 11:12:38,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12550 conditions, 10385 events. 2659/10385 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 94402 event pairs, 626 based on Foata normal form. 0/8974 useless extension candidates. Maximal degree in co-relation 6700. Up to 1024 conditions per place. [2023-09-01 11:12:38,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 488 places, 551 transitions, 1214 flow [2023-09-01 11:12:38,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 488 places, 551 transitions, 1214 flow [2023-09-01 11:12:38,807 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:38,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 488 places, 551 transitions, 1214 flow [2023-09-01 11:12:38,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 488 places, 551 transitions, 1214 flow [2023-09-01 11:12:38,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 551 transitions, 1214 flow [2023-09-01 11:12:40,985 INFO L130 PetriNetUnfolder]: 2659/10385 cut-off events. [2023-09-01 11:12:40,985 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2023-09-01 11:12:41,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12550 conditions, 10385 events. 2659/10385 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 94402 event pairs, 626 based on Foata normal form. 0/8974 useless extension candidates. Maximal degree in co-relation 6700. Up to 1024 conditions per place. [2023-09-01 11:12:41,814 INFO L119 LiptonReduction]: Number of co-enabled transitions 204280 [2023-09-01 11:12:50,015 INFO L134 LiptonReduction]: Checked pairs total: 456654 [2023-09-01 11:12:50,015 INFO L136 LiptonReduction]: Total number of compositions: 412 [2023-09-01 11:12:50,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:50,017 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@3bf7e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:50,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:12:50,037 INFO L130 PetriNetUnfolder]: 102/415 cut-off events. [2023-09-01 11:12:50,038 INFO L131 PetriNetUnfolder]: For 86/94 co-relation queries the response was YES. [2023-09-01 11:12:50,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:50,038 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:12:50,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:50,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash 478432640, now seen corresponding path program 1 times [2023-09-01 11:12:50,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:50,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071283233] [2023-09-01 11:12:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:50,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:50,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:50,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:50,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:50,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:12:50,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:12:50,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:12:50,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:50,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:12:50,076 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:50,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:12:50,126 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 11:12:50,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 587 places, 665 transitions, 1480 flow [2023-09-01 11:13:01,995 INFO L130 PetriNetUnfolder]: 11792/38034 cut-off events. [2023-09-01 11:13:01,995 INFO L131 PetriNetUnfolder]: For 10450/10545 co-relation queries the response was YES. [2023-09-01 11:13:03,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48460 conditions, 38034 events. 11792/38034 cut-off events. For 10450/10545 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 412843 event pairs, 4296 based on Foata normal form. 0/33365 useless extension candidates. Maximal degree in co-relation 24325. Up to 5120 conditions per place. [2023-09-01 11:13:03,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 587 places, 665 transitions, 1480 flow [2023-09-01 11:13:03,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 587 places, 665 transitions, 1480 flow [2023-09-01 11:13:03,816 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:03,816 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 587 places, 665 transitions, 1480 flow [2023-09-01 11:13:03,816 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 587 places, 665 transitions, 1480 flow [2023-09-01 11:13:03,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 587 places, 665 transitions, 1480 flow [2023-09-01 11:13:15,444 INFO L130 PetriNetUnfolder]: 11792/38034 cut-off events. [2023-09-01 11:13:15,444 INFO L131 PetriNetUnfolder]: For 10450/10545 co-relation queries the response was YES. [2023-09-01 11:13:16,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48460 conditions, 38034 events. 11792/38034 cut-off events. For 10450/10545 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 412843 event pairs, 4296 based on Foata normal form. 0/33365 useless extension candidates. Maximal degree in co-relation 24325. Up to 5120 conditions per place. [2023-09-01 11:13:19,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 318760 [2023-09-01 11:13:28,234 INFO L134 LiptonReduction]: Checked pairs total: 731967 [2023-09-01 11:13:28,234 INFO L136 LiptonReduction]: Total number of compositions: 505 [2023-09-01 11:13:28,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:28,236 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;@3bf7e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:28,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:13:28,273 INFO L130 PetriNetUnfolder]: 179/679 cut-off events. [2023-09-01 11:13:28,273 INFO L131 PetriNetUnfolder]: For 181/193 co-relation queries the response was YES. [2023-09-01 11:13:28,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:28,273 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:13:28,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:28,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash -938277164, now seen corresponding path program 1 times [2023-09-01 11:13:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:28,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349153220] [2023-09-01 11:13:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:28,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:28,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:28,339 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:28,340 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:13:28,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:13:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:13:28,340 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:28,340 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:13:28,341 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:28,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:13:28,398 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 11:13:28,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 779 transitions, 1750 flow [2023-09-01 11:14:30,028 INFO L130 PetriNetUnfolder]: 53983/151895 cut-off events. [2023-09-01 11:14:30,028 INFO L131 PetriNetUnfolder]: For 49552/49679 co-relation queries the response was YES. [2023-09-01 11:14:40,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201324 conditions, 151895 events. 53983/151895 cut-off events. For 49552/49679 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 1915862 event pairs, 24930 based on Foata normal form. 0/134716 useless extension candidates. Maximal degree in co-relation 98231. Up to 24576 conditions per place. [2023-09-01 11:14:40,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 686 places, 779 transitions, 1750 flow [2023-09-01 11:14:44,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 686 places, 779 transitions, 1750 flow [2023-09-01 11:14:44,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:14:44,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 686 places, 779 transitions, 1750 flow [2023-09-01 11:14:44,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 686 places, 779 transitions, 1750 flow [2023-09-01 11:14:44,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 779 transitions, 1750 flow [2023-09-01 11:15:41,281 INFO L130 PetriNetUnfolder]: 53983/151895 cut-off events. [2023-09-01 11:15:41,281 INFO L131 PetriNetUnfolder]: For 49552/49679 co-relation queries the response was YES. [2023-09-01 11:15:52,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201324 conditions, 151895 events. 53983/151895 cut-off events. For 49552/49679 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 1915862 event pairs, 24930 based on Foata normal form. 0/134716 useless extension candidates. Maximal degree in co-relation 98231. Up to 24576 conditions per place. [2023-09-01 11:16:09,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 458604 [2023-09-01 11:16:19,686 INFO L134 LiptonReduction]: Checked pairs total: 1055502 [2023-09-01 11:16:19,686 INFO L136 LiptonReduction]: Total number of compositions: 586 [2023-09-01 11:16:19,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:16:19,688 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;@3bf7e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:16:19,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:16:19,751 INFO L130 PetriNetUnfolder]: 292/1055 cut-off events. [2023-09-01 11:16:19,752 INFO L131 PetriNetUnfolder]: For 342/358 co-relation queries the response was YES. [2023-09-01 11:16:19,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:16:19,752 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:16:19,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:16:19,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:16:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash -672620518, now seen corresponding path program 1 times [2023-09-01 11:16:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:16:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547984747] [2023-09-01 11:16:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:16:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:16:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:16:19,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:16:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:16:19,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:16:19,808 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:16:19,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:16:19,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:16:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:16:19,809 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:16:19,809 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:16:19,811 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:16:19,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:16:19,913 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 11:16:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 785 places, 893 transitions, 2024 flow