./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_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_09-ptrmunge_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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --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 10:50:15,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:50:15,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:50:15,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:50:15,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:50:15,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:50:15,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:50:15,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:50:15,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:50:15,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:50:15,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:50:15,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:50:15,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:50:15,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:50:15,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:50:15,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:50:15,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:50:15,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:50:15,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:50:15,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:50:15,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:50:15,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:50:15,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:50:15,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:50:16,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:50:16,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:50:16,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:50:16,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:50:16,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:50:16,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:50:16,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:50:16,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:50:16,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:50:16,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:50:16,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:50:16,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:50:16,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:50:16,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:50:16,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:50:16,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:50:16,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:50:16,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:50:16,061 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:50:16,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:50:16,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:50:16,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:50:16,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:50:16,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:50:16,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:50:16,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:50:16,065 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:50:16,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:50:16,067 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:50:16,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:50:16,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:50:16,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:50:16,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:50:16,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:50:16,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:50:16,068 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:50:16,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:50:16,069 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:50:16,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:50:16,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:50:16,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:50:16,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:50:16,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:50:16,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:50:16,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:50:16,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:50:16,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:50:16,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:50:16,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:50:16,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:50:16,072 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:50:16,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:50:16,072 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:50:16,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:50:16,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:50:16,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:50:16,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:50:16,427 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:50:16,428 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:50:16,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-09-01 10:50:17,509 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:50:17,803 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:50:17,803 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-09-01 10:50:17,813 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ad3ad32/d4837b5ea6514047a6422e1e1ef163f3/FLAGb68f47f7d [2023-09-01 10:50:17,826 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ad3ad32/d4837b5ea6514047a6422e1e1ef163f3 [2023-09-01 10:50:17,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:50:17,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:50:17,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:50:17,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:50:17,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:50:17,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:50:17" (1/1) ... [2023-09-01 10:50:17,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72986c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:17, skipping insertion in model container [2023-09-01 10:50:17,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:50:17" (1/1) ... [2023-09-01 10:50:17,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:50:17,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:50:18,174 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_09-ptrmunge_racing.i[30176,30189] [2023-09-01 10:50:18,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:50:18,219 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:50:18,255 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_09-ptrmunge_racing.i[30176,30189] [2023-09-01 10:50:18,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:50:18,371 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:50:18,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18 WrapperNode [2023-09-01 10:50:18,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:50:18,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:50:18,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:50:18,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:50:18,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,443 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2023-09-01 10:50:18,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:50:18,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:50:18,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:50:18,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:50:18,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,495 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:50:18,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:50:18,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:50:18,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:50:18,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (1/1) ... [2023-09-01 10:50:18,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:50:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:50:18,542 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 10:50:18,563 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 10:50:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:50:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 10:50:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 10:50:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:50:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:50:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:50:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:50:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 10:50:18,588 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 10:50:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:50:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:50:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:50:18,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:50:18,590 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 10:50:18,786 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:50:18,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:50:19,112 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:50:19,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:50:19,122 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 10:50:19,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:50:19 BoogieIcfgContainer [2023-09-01 10:50:19,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:50:19,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:50:19,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:50:19,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:50:19,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:50:17" (1/3) ... [2023-09-01 10:50:19,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50993adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:50:19, skipping insertion in model container [2023-09-01 10:50:19,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:18" (2/3) ... [2023-09-01 10:50:19,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50993adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:50:19, skipping insertion in model container [2023-09-01 10:50:19,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:50:19" (3/3) ... [2023-09-01 10:50:19,136 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-09-01 10:50:19,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:50:19,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:50:19,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 10:50:19,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:50:19,270 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:50:19,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-09-01 10:50:19,477 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-09-01 10:50:19,478 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 10:50:19,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-09-01 10:50:19,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 215 transitions, 452 flow [2023-09-01 10:50:19,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 215 transitions, 452 flow [2023-09-01 10:50:19,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:19,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 215 transitions, 452 flow [2023-09-01 10:50:19,523 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 215 transitions, 452 flow [2023-09-01 10:50:19,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-09-01 10:50:19,591 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-09-01 10:50:19,591 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 10:50:19,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-09-01 10:50:19,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-09-01 10:50:23,678 INFO L134 LiptonReduction]: Checked pairs total: 31275 [2023-09-01 10:50:23,678 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-09-01 10:50:23,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:23,696 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;@1b6dc211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:23,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:50:23,701 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-09-01 10:50:23,701 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:50:23,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:23,702 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:50:23,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:23,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash -103624817, now seen corresponding path program 1 times [2023-09-01 10:50:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:23,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686904912] [2023-09-01 10:50:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:23,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:23,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:23,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:23,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:23,902 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:50:23,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:50:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:50:23,904 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:23,906 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:50:23,907 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:23,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:50:23,996 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:50:24,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 734 flow [2023-09-01 10:50:24,194 INFO L130 PetriNetUnfolder]: 197/1103 cut-off events. [2023-09-01 10:50:24,194 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 10:50:24,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1103 events. 197/1103 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6638 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 671. Up to 32 conditions per place. [2023-09-01 10:50:24,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 343 transitions, 734 flow [2023-09-01 10:50:24,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 343 transitions, 734 flow [2023-09-01 10:50:24,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:24,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 343 transitions, 734 flow [2023-09-01 10:50:24,245 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 343 transitions, 734 flow [2023-09-01 10:50:24,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 734 flow [2023-09-01 10:50:24,440 INFO L130 PetriNetUnfolder]: 197/1103 cut-off events. [2023-09-01 10:50:24,441 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 10:50:24,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1103 events. 197/1103 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6638 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 671. Up to 32 conditions per place. [2023-09-01 10:50:24,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 69784 [2023-09-01 10:50:29,305 INFO L134 LiptonReduction]: Checked pairs total: 133189 [2023-09-01 10:50:29,305 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-09-01 10:50:29,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:29,308 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;@1b6dc211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:29,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:50:29,318 INFO L130 PetriNetUnfolder]: 31/121 cut-off events. [2023-09-01 10:50:29,318 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 10:50:29,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:29,319 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:50:29,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:29,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 253020290, now seen corresponding path program 1 times [2023-09-01 10:50:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:29,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607355462] [2023-09-01 10:50:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:29,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:29,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:29,371 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:29,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:50:29,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:50:29,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:50:29,372 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:29,373 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:50:29,373 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:29,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:50:29,421 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:50:29,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 471 transitions, 1020 flow [2023-09-01 10:50:30,162 INFO L130 PetriNetUnfolder]: 664/3102 cut-off events. [2023-09-01 10:50:30,162 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 10:50:30,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 3102 events. 664/3102 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 22765 event pairs, 32 based on Foata normal form. 0/2611 useless extension candidates. Maximal degree in co-relation 1997. Up to 192 conditions per place. [2023-09-01 10:50:30,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 471 transitions, 1020 flow [2023-09-01 10:50:30,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 396 places, 471 transitions, 1020 flow [2023-09-01 10:50:30,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:30,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 396 places, 471 transitions, 1020 flow [2023-09-01 10:50:30,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 396 places, 471 transitions, 1020 flow [2023-09-01 10:50:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 471 transitions, 1020 flow [2023-09-01 10:50:30,909 INFO L130 PetriNetUnfolder]: 664/3102 cut-off events. [2023-09-01 10:50:30,909 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 10:50:30,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 3102 events. 664/3102 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 22765 event pairs, 32 based on Foata normal form. 0/2611 useless extension candidates. Maximal degree in co-relation 1997. Up to 192 conditions per place. [2023-09-01 10:50:31,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 152988 [2023-09-01 10:50:36,828 INFO L134 LiptonReduction]: Checked pairs total: 310415 [2023-09-01 10:50:36,828 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-09-01 10:50:36,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:36,831 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;@1b6dc211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:36,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:50:36,850 INFO L130 PetriNetUnfolder]: 85/289 cut-off events. [2023-09-01 10:50:36,850 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 10:50:36,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:36,851 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:50:36,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:36,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -584935280, now seen corresponding path program 1 times [2023-09-01 10:50:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818552432] [2023-09-01 10:50:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:36,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:36,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:36,906 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:36,906 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:50:36,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:50:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:50:36,906 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:36,907 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:50:36,907 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:36,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:50:36,971 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 10:50:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 599 transitions, 1310 flow [2023-09-01 10:50:40,462 INFO L130 PetriNetUnfolder]: 2647/10049 cut-off events. [2023-09-01 10:50:40,462 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 10:50:40,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12214 conditions, 10049 events. 2647/10049 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 89330 event pairs, 626 based on Foata normal form. 0/8653 useless extension candidates. Maximal degree in co-relation 6422. Up to 1024 conditions per place. [2023-09-01 10:50:40,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 599 transitions, 1310 flow [2023-09-01 10:50:40,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 599 transitions, 1310 flow [2023-09-01 10:50:40,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:40,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 599 transitions, 1310 flow [2023-09-01 10:50:40,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 599 transitions, 1310 flow [2023-09-01 10:50:40,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 599 transitions, 1310 flow [2023-09-01 10:50:43,712 INFO L130 PetriNetUnfolder]: 2647/10049 cut-off events. [2023-09-01 10:50:43,713 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 10:50:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12214 conditions, 10049 events. 2647/10049 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 89330 event pairs, 626 based on Foata normal form. 0/8653 useless extension candidates. Maximal degree in co-relation 6422. Up to 1024 conditions per place. [2023-09-01 10:50:44,638 INFO L119 LiptonReduction]: Number of co-enabled transitions 268400 [2023-09-01 10:50:51,074 INFO L134 LiptonReduction]: Checked pairs total: 548312 [2023-09-01 10:50:51,075 INFO L136 LiptonReduction]: Total number of compositions: 435 [2023-09-01 10:50:51,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:51,078 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;@1b6dc211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:51,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:50:51,124 INFO L130 PetriNetUnfolder]: 148/500 cut-off events. [2023-09-01 10:50:51,125 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 10:50:51,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:51,125 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:51,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:51,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1387299188, now seen corresponding path program 1 times [2023-09-01 10:50:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390542560] [2023-09-01 10:50:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:51,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:51,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:51,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:51,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:50:51,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:50:51,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:50:51,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:51,178 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:50:51,178 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:51,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:50:51,248 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 10:50:51,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 604 places, 727 transitions, 1604 flow [2023-09-01 10:51:05,071 INFO L130 PetriNetUnfolder]: 11762/37496 cut-off events. [2023-09-01 10:51:05,071 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 10:51:07,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47922 conditions, 37496 events. 11762/37496 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 404408 event pairs, 4296 based on Foata normal form. 0/32861 useless extension candidates. Maximal degree in co-relation 23869. Up to 5120 conditions per place. [2023-09-01 10:51:07,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 604 places, 727 transitions, 1604 flow [2023-09-01 10:51:08,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 604 places, 727 transitions, 1604 flow [2023-09-01 10:51:08,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:08,459 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 604 places, 727 transitions, 1604 flow [2023-09-01 10:51:08,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 604 places, 727 transitions, 1604 flow [2023-09-01 10:51:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 604 places, 727 transitions, 1604 flow [2023-09-01 10:51:22,145 INFO L130 PetriNetUnfolder]: 11762/37496 cut-off events. [2023-09-01 10:51:22,146 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 10:51:24,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47922 conditions, 37496 events. 11762/37496 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 404408 event pairs, 4296 based on Foata normal form. 0/32861 useless extension candidates. Maximal degree in co-relation 23869. Up to 5120 conditions per place. [2023-09-01 10:51:27,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 416020 [2023-09-01 10:51:35,143 INFO L134 LiptonReduction]: Checked pairs total: 953614 [2023-09-01 10:51:35,144 INFO L136 LiptonReduction]: Total number of compositions: 526 [2023-09-01 10:51:35,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:35,147 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;@1b6dc211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:35,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:51:35,213 INFO L130 PetriNetUnfolder]: 222/747 cut-off events. [2023-09-01 10:51:35,214 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-09-01 10:51:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:35,214 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:51:35,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:35,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -129010948, now seen corresponding path program 1 times [2023-09-01 10:51:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709979532] [2023-09-01 10:51:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:35,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:35,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:35,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:35,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:51:35,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:51:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:51:35,320 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:35,321 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:51:35,321 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:35,322 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:51:35,391 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 10:51:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 708 places, 855 transitions, 1902 flow [2023-09-01 10:52:51,443 INFO L130 PetriNetUnfolder]: 53929/151107 cut-off events. [2023-09-01 10:52:51,443 INFO L131 PetriNetUnfolder]: For 49552/49615 co-relation queries the response was YES. [2023-09-01 10:53:06,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200536 conditions, 151107 events. 53929/151107 cut-off events. For 49552/49615 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 1911633 event pairs, 24930 based on Foata normal form. 0/133987 useless extension candidates. Maximal degree in co-relation 97530. Up to 24576 conditions per place. [2023-09-01 10:53:06,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 708 places, 855 transitions, 1902 flow [2023-09-01 10:53:12,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 708 places, 855 transitions, 1902 flow [2023-09-01 10:53:12,169 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:12,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 708 places, 855 transitions, 1902 flow [2023-09-01 10:53:12,169 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 708 places, 855 transitions, 1902 flow [2023-09-01 10:53:12,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 708 places, 855 transitions, 1902 flow [2023-09-01 10:54:22,338 INFO L130 PetriNetUnfolder]: 53929/151107 cut-off events. [2023-09-01 10:54:22,338 INFO L131 PetriNetUnfolder]: For 49552/49615 co-relation queries the response was YES. [2023-09-01 10:54:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200536 conditions, 151107 events. 53929/151107 cut-off events. For 49552/49615 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 1911633 event pairs, 24930 based on Foata normal form. 0/133987 useless extension candidates. Maximal degree in co-relation 97530. Up to 24576 conditions per place. [2023-09-01 10:55:04,196 INFO L119 LiptonReduction]: Number of co-enabled transitions 595848 [2023-09-01 10:55:12,390 INFO L134 LiptonReduction]: Checked pairs total: 1377275 [2023-09-01 10:55:12,390 INFO L136 LiptonReduction]: Total number of compositions: 611 [2023-09-01 10:55:12,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:12,393 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;@1b6dc211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:12,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:55:12,491 INFO L130 PetriNetUnfolder]: 403/1285 cut-off events. [2023-09-01 10:55:12,491 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-09-01 10:55:12,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:12,491 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:12,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:12,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1605773083, now seen corresponding path program 1 times [2023-09-01 10:55:12,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:12,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051518368] [2023-09-01 10:55:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:12,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:12,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:12,573 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:12,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:55:12,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:55:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:55:12,574 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:12,574 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:55:12,575 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:12,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:55:12,650 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 10:55:12,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 983 transitions, 2204 flow