./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --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 00:26:20,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:26:20,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:26:20,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:26:20,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:26:20,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:26:20,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:26:20,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:26:20,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:26:20,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:26:20,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:26:20,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:26:20,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:26:20,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:26:20,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:26:20,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:26:20,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:26:20,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:26:20,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:26:20,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:26:20,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:26:21,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:26:21,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:26:21,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:26:21,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:26:21,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:26:21,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:26:21,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:26:21,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:26:21,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:26:21,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:26:21,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:26:21,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:26:21,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:26:21,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:26:21,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:26:21,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:26:21,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:26:21,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:26:21,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:26:21,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:26:21,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:26:21,054 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:26:21,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:26:21,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:26:21,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:26:21,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:26:21,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:26:21,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:26:21,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:26:21,058 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:26:21,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:26:21,059 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:26:21,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:26:21,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:26:21,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:26:21,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:26:21,060 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:26:21,060 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:26:21,060 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:26:21,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:26:21,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:26:21,061 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:26:21,061 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:26:21,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:26:21,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:26:21,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:26:21,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:21,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:26:21,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:26:21,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:26:21,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:26:21,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:26:21,063 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:26:21,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:26:21,064 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:26:21,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:26:21,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:26:21,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:26:21,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:26:21,376 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:26:21,377 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:26:21,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-09-01 00:26:22,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:26:22,721 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:26:22,722 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-09-01 00:26:22,739 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0eae99ff/85cdf011f6c14639ae6e2f57e6842879/FLAG6d3d6ba35 [2023-09-01 00:26:22,750 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0eae99ff/85cdf011f6c14639ae6e2f57e6842879 [2023-09-01 00:26:22,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:26:22,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:26:22,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:22,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:26:22,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:26:22,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:22" (1/1) ... [2023-09-01 00:26:22,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464bffe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:22, skipping insertion in model container [2023-09-01 00:26:22,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:22" (1/1) ... [2023-09-01 00:26:22,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:26:22,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:26:23,122 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_04-munge_racefree.i[30176,30189] [2023-09-01 00:26:23,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:23,169 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:26:23,207 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_04-munge_racefree.i[30176,30189] [2023-09-01 00:26:23,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:23,280 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:26:23,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23 WrapperNode [2023-09-01 00:26:23,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:23,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:23,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:26:23,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:26:23,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,347 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 202 [2023-09-01 00:26:23,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:23,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:26:23,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:26:23,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:26:23,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:26:23,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:26:23,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:26:23,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:26:23,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (1/1) ... [2023-09-01 00:26:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:26:23,430 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 00:26:23,449 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 00:26:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:26:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 00:26:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 00:26:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:26:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:26:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:26:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:26:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 00:26:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 00:26:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:26:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:26:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:26:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:26:23,473 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 00:26:23,636 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:26:23,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:26:23,969 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:26:23,978 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:26:23,978 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 00:26:23,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:23 BoogieIcfgContainer [2023-09-01 00:26:23,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:26:23,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:26:23,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:26:23,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:26:23,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:26:22" (1/3) ... [2023-09-01 00:26:23,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f120fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:23, skipping insertion in model container [2023-09-01 00:26:23,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:23" (2/3) ... [2023-09-01 00:26:23,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f120fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:23, skipping insertion in model container [2023-09-01 00:26:23,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:23" (3/3) ... [2023-09-01 00:26:23,989 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-09-01 00:26:24,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:26:24,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-09-01 00:26:24,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:26:24,131 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:26:24,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 212 transitions, 446 flow [2023-09-01 00:26:24,281 INFO L130 PetriNetUnfolder]: 58/399 cut-off events. [2023-09-01 00:26:24,282 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:26:24,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 399 events. 58/399 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1791 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2023-09-01 00:26:24,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 212 transitions, 446 flow [2023-09-01 00:26:24,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 212 transitions, 446 flow [2023-09-01 00:26:24,300 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:24,307 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 212 transitions, 446 flow [2023-09-01 00:26:24,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 212 transitions, 446 flow [2023-09-01 00:26:24,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 212 transitions, 446 flow [2023-09-01 00:26:24,376 INFO L130 PetriNetUnfolder]: 58/399 cut-off events. [2023-09-01 00:26:24,377 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:26:24,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 399 events. 58/399 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1791 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2023-09-01 00:26:24,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 18036 [2023-09-01 00:26:28,242 INFO L134 LiptonReduction]: Checked pairs total: 35591 [2023-09-01 00:26:28,243 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-09-01 00:26:28,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:28,260 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25963575, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:28,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:28,267 INFO L130 PetriNetUnfolder]: 1/32 cut-off events. [2023-09-01 00:26:28,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:28,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:28,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:26:28,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:28,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash -686116079, now seen corresponding path program 1 times [2023-09-01 00:26:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:28,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839994839] [2023-09-01 00:26:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:28,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:28,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:28,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:28,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:28,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:28,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:26:28,435 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:28,438 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:28,439 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:28,439 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:26:28,482 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:26:28,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 326 transitions, 700 flow [2023-09-01 00:26:28,691 INFO L130 PetriNetUnfolder]: 197/1183 cut-off events. [2023-09-01 00:26:28,691 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 00:26:28,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 1183 events. 197/1183 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7207 event pairs, 1 based on Foata normal form. 0/887 useless extension candidates. Maximal degree in co-relation 722. Up to 32 conditions per place. [2023-09-01 00:26:28,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 326 transitions, 700 flow [2023-09-01 00:26:28,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 326 transitions, 700 flow [2023-09-01 00:26:28,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:28,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 326 transitions, 700 flow [2023-09-01 00:26:28,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 326 transitions, 700 flow [2023-09-01 00:26:28,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 326 transitions, 700 flow [2023-09-01 00:26:28,964 INFO L130 PetriNetUnfolder]: 197/1183 cut-off events. [2023-09-01 00:26:28,964 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 00:26:28,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 1183 events. 197/1183 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7207 event pairs, 1 based on Foata normal form. 0/887 useless extension candidates. Maximal degree in co-relation 722. Up to 32 conditions per place. [2023-09-01 00:26:29,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 61560 [2023-09-01 00:26:33,090 INFO L134 LiptonReduction]: Checked pairs total: 148137 [2023-09-01 00:26:33,091 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 00:26:33,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:33,094 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25963575, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:33,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:33,104 INFO L130 PetriNetUnfolder]: 28/146 cut-off events. [2023-09-01 00:26:33,104 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 00:26:33,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:33,104 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:26:33,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:33,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash 725992310, now seen corresponding path program 1 times [2023-09-01 00:26:33,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:33,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823938846] [2023-09-01 00:26:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:33,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:33,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:33,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:33,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:33,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:33,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:26:33,164 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:33,165 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:33,165 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:33,165 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:26:33,223 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:26:33,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 440 transitions, 958 flow [2023-09-01 00:26:34,049 INFO L130 PetriNetUnfolder]: 664/3485 cut-off events. [2023-09-01 00:26:34,050 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 00:26:34,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3936 conditions, 3485 events. 664/3485 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26770 event pairs, 32 based on Foata normal form. 0/2634 useless extension candidates. Maximal degree in co-relation 2181. Up to 192 conditions per place. [2023-09-01 00:26:34,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 440 transitions, 958 flow [2023-09-01 00:26:34,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 440 transitions, 958 flow [2023-09-01 00:26:34,149 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:34,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 440 transitions, 958 flow [2023-09-01 00:26:34,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 440 transitions, 958 flow [2023-09-01 00:26:34,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 440 transitions, 958 flow [2023-09-01 00:26:34,812 INFO L130 PetriNetUnfolder]: 664/3485 cut-off events. [2023-09-01 00:26:34,813 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 00:26:34,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3936 conditions, 3485 events. 664/3485 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26770 event pairs, 32 based on Foata normal form. 0/2634 useless extension candidates. Maximal degree in co-relation 2181. Up to 192 conditions per place. [2023-09-01 00:26:35,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 130572 [2023-09-01 00:26:39,894 INFO L134 LiptonReduction]: Checked pairs total: 290899 [2023-09-01 00:26:39,895 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-09-01 00:26:39,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:39,898 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25963575, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:39,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:39,922 INFO L130 PetriNetUnfolder]: 76/337 cut-off events. [2023-09-01 00:26:39,922 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 00:26:39,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:39,923 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:26:39,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:39,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 137785102, now seen corresponding path program 1 times [2023-09-01 00:26:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475085336] [2023-09-01 00:26:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:39,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:39,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:39,974 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:39,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:39,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:26:39,975 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:39,975 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:39,976 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:39,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:26:40,019 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 00:26:40,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 554 transitions, 1220 flow [2023-09-01 00:26:43,423 INFO L130 PetriNetUnfolder]: 2647/11733 cut-off events. [2023-09-01 00:26:43,423 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 00:26:43,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13898 conditions, 11733 events. 2647/11733 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 112940 event pairs, 313 based on Foata normal form. 0/8997 useless extension candidates. Maximal degree in co-relation 7222. Up to 1024 conditions per place. [2023-09-01 00:26:43,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 554 transitions, 1220 flow [2023-09-01 00:26:43,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 554 transitions, 1220 flow [2023-09-01 00:26:43,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:43,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 455 places, 554 transitions, 1220 flow [2023-09-01 00:26:43,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 455 places, 554 transitions, 1220 flow [2023-09-01 00:26:43,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 554 transitions, 1220 flow [2023-09-01 00:26:46,797 INFO L130 PetriNetUnfolder]: 2647/11733 cut-off events. [2023-09-01 00:26:46,797 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 00:26:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13898 conditions, 11733 events. 2647/11733 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 112940 event pairs, 313 based on Foata normal form. 0/8997 useless extension candidates. Maximal degree in co-relation 7222. Up to 1024 conditions per place. [2023-09-01 00:26:47,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 225072 [2023-09-01 00:26:53,307 INFO L134 LiptonReduction]: Checked pairs total: 586838 [2023-09-01 00:26:53,307 INFO L136 LiptonReduction]: Total number of compositions: 362 [2023-09-01 00:26:53,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:53,310 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25963575, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:53,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:53,357 INFO L130 PetriNetUnfolder]: 144/608 cut-off events. [2023-09-01 00:26:53,357 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 00:26:53,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:53,358 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:53,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:53,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1165909059, now seen corresponding path program 1 times [2023-09-01 00:26:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:53,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246658257] [2023-09-01 00:26:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:53,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:53,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:53,421 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:53,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:53,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:53,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:26:53,422 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:53,423 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:53,423 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:53,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:26:53,493 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 00:26:53,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 668 transitions, 1486 flow [2023-09-01 00:27:07,601 INFO L130 PetriNetUnfolder]: 11762/44503 cut-off events. [2023-09-01 00:27:07,601 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 00:27:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54929 conditions, 44503 events. 11762/44503 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 525166 event pairs, 2148 based on Foata normal form. 0/34664 useless extension candidates. Maximal degree in co-relation 27299. Up to 5120 conditions per place. [2023-09-01 00:27:09,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 668 transitions, 1486 flow [2023-09-01 00:27:10,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 668 transitions, 1486 flow [2023-09-01 00:27:10,495 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:27:10,495 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 545 places, 668 transitions, 1486 flow [2023-09-01 00:27:10,496 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 545 places, 668 transitions, 1486 flow [2023-09-01 00:27:10,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 668 transitions, 1486 flow [2023-09-01 00:27:24,054 INFO L130 PetriNetUnfolder]: 11762/44503 cut-off events. [2023-09-01 00:27:24,054 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 00:27:25,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54929 conditions, 44503 events. 11762/44503 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 525166 event pairs, 2148 based on Foata normal form. 0/34664 useless extension candidates. Maximal degree in co-relation 27299. Up to 5120 conditions per place. [2023-09-01 00:27:28,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 345060 [2023-09-01 00:27:34,249 INFO L134 LiptonReduction]: Checked pairs total: 813692 [2023-09-01 00:27:34,250 INFO L136 LiptonReduction]: Total number of compositions: 436 [2023-09-01 00:27:34,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:27:34,253 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25963575, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:27:34,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:27:34,369 INFO L130 PetriNetUnfolder]: 248/1012 cut-off events. [2023-09-01 00:27:34,369 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 00:27:34,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:27:34,369 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:27:34,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:27:34,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:27:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1412316297, now seen corresponding path program 1 times [2023-09-01 00:27:34,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:27:34,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041034761] [2023-09-01 00:27:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:27:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:27:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:34,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:27:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:34,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:27:34,417 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:27:34,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:27:34,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:27:34,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:27:34,418 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:27:34,419 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:27:34,419 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:27:34,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:27:34,470 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 00:27:34,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 635 places, 782 transitions, 1756 flow [2023-09-01 00:28:52,745 INFO L130 PetriNetUnfolder]: 53929/179555 cut-off events. [2023-09-01 00:28:52,745 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 00:29:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228984 conditions, 179555 events. 53929/179555 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 2508444 event pairs, 12465 based on Foata normal form. 0/141843 useless extension candidates. Maximal degree in co-relation 111675. Up to 24576 conditions per place. [2023-09-01 00:29:08,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 635 places, 782 transitions, 1756 flow [2023-09-01 00:29:14,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 635 places, 782 transitions, 1756 flow [2023-09-01 00:29:14,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:14,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 635 places, 782 transitions, 1756 flow [2023-09-01 00:29:14,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 635 places, 782 transitions, 1756 flow [2023-09-01 00:29:14,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 635 places, 782 transitions, 1756 flow [2023-09-01 00:30:24,802 INFO L130 PetriNetUnfolder]: 53929/179555 cut-off events. [2023-09-01 00:30:24,802 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 00:30:40,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228984 conditions, 179555 events. 53929/179555 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 2508444 event pairs, 12465 based on Foata normal form. 0/141843 useless extension candidates. Maximal degree in co-relation 111675. Up to 24576 conditions per place. [2023-09-01 00:31:05,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 490536 [2023-09-01 00:31:11,484 INFO L134 LiptonReduction]: Checked pairs total: 1178275 [2023-09-01 00:31:11,485 INFO L136 LiptonReduction]: Total number of compositions: 503 [2023-09-01 00:31:11,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:11,487 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25963575, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:11,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:31:11,594 INFO L130 PetriNetUnfolder]: 366/1452 cut-off events. [2023-09-01 00:31:11,595 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2023-09-01 00:31:11,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:11,595 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:31:11,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:11,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1935222216, now seen corresponding path program 1 times [2023-09-01 00:31:11,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:11,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754174165] [2023-09-01 00:31:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:11,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:11,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:11,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:11,644 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:11,644 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:31:11,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:31:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:31:11,645 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:11,645 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:31:11,645 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:11,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:31:11,701 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 00:31:11,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 725 places, 896 transitions, 2030 flow