./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.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_03-munge_racing.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 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --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 00:26:15,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:26:15,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:26:15,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:26:15,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:26:15,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:26:15,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:26:15,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:26:15,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:26:15,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:26:15,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:26:15,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:26:15,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:26:15,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:26:15,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:26:15,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:26:15,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:26:15,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:26:15,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:26:15,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:26:15,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:26:15,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:26:15,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:26:15,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:26:15,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:26:15,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:26:15,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:26:15,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:26:15,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:26:15,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:26:15,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:26:15,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:26:15,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:26:15,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:26:15,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:26:15,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:26:15,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:26:15,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:26:15,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:26:15,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:26:15,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:26:15,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:26:15,823 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:26:15,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:26:15,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:26:15,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:26:15,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:26:15,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:26:15,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:26:15,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:26:15,826 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:26:15,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:26:15,827 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:26:15,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:26:15,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:26:15,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:26:15,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:26:15,828 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:26:15,829 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:26:15,829 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:26:15,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:26:15,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:26:15,829 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:26:15,830 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:26:15,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:26:15,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:26:15,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:26:15,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:15,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:26:15,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:26:15,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:26:15,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:26:15,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:26:15,832 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:26:15,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:26:15,832 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:26:15,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:26:16,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:26:16,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:26:16,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:26:16,123 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:26:16,123 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:26:16,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-09-01 00:26:17,243 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:26:17,522 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:26:17,522 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-09-01 00:26:17,532 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cceb76377/c0d7554a2a6146c58c8a1861b674a559/FLAGc5ecd424f [2023-09-01 00:26:17,548 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cceb76377/c0d7554a2a6146c58c8a1861b674a559 [2023-09-01 00:26:17,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:26:17,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:26:17,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:17,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:26:17,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:26:17,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:17" (1/1) ... [2023-09-01 00:26:17,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c42ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:17, skipping insertion in model container [2023-09-01 00:26:17,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:17" (1/1) ... [2023-09-01 00:26:17,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:26:17,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:26:17,887 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_03-munge_racing.i[30176,30189] [2023-09-01 00:26:17,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:17,929 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:26:17,965 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_03-munge_racing.i[30176,30189] [2023-09-01 00:26:17,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:18,027 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:26:18,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18 WrapperNode [2023-09-01 00:26:18,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:18,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:18,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:26:18,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:26:18,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,110 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 201 [2023-09-01 00:26:18,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:18,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:26:18,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:26:18,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:26:18,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:26:18,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:26:18,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:26:18,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:26:18,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (1/1) ... [2023-09-01 00:26:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:26:18,202 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 00:26:18,228 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 00:26:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:26:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 00:26:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 00:26:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:26:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:26:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:26:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:26:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 00:26:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 00:26:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:26:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:26:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:26:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:26:18,244 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 00:26:18,389 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:26:18,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:26:18,697 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:26:18,705 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:26:18,706 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 00:26:18,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:18 BoogieIcfgContainer [2023-09-01 00:26:18,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:26:18,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:26:18,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:26:18,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:26:18,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:26:17" (1/3) ... [2023-09-01 00:26:18,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44133f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:18, skipping insertion in model container [2023-09-01 00:26:18,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:18" (2/3) ... [2023-09-01 00:26:18,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44133f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:18, skipping insertion in model container [2023-09-01 00:26:18,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:18" (3/3) ... [2023-09-01 00:26:18,716 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-09-01 00:26:18,729 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:26:18,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-09-01 00:26:18,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:26:18,798 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:26:18,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 210 transitions, 442 flow [2023-09-01 00:26:18,959 INFO L130 PetriNetUnfolder]: 58/397 cut-off events. [2023-09-01 00:26:18,959 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:26:18,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 397 events. 58/397 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1784 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2023-09-01 00:26:18,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 210 transitions, 442 flow [2023-09-01 00:26:18,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 210 transitions, 442 flow [2023-09-01 00:26:18,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:18,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 210 transitions, 442 flow [2023-09-01 00:26:18,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 210 transitions, 442 flow [2023-09-01 00:26:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 210 transitions, 442 flow [2023-09-01 00:26:19,080 INFO L130 PetriNetUnfolder]: 58/397 cut-off events. [2023-09-01 00:26:19,080 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:26:19,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 397 events. 58/397 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1784 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2023-09-01 00:26:19,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 18036 [2023-09-01 00:26:23,084 INFO L134 LiptonReduction]: Checked pairs total: 32543 [2023-09-01 00:26:23,084 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-09-01 00:26:23,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:23,104 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;@b8378b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:23,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:23,111 INFO L130 PetriNetUnfolder]: 2/44 cut-off events. [2023-09-01 00:26:23,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:23,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:23,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:26:23,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:23,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash -883872492, now seen corresponding path program 1 times [2023-09-01 00:26:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591828756] [2023-09-01 00:26:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:23,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:23,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:23,272 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:23,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:23,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:23,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:26:23,286 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:23,289 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:23,289 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:23,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:26:23,332 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:26:23,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 324 transitions, 696 flow [2023-09-01 00:26:23,562 INFO L130 PetriNetUnfolder]: 197/1181 cut-off events. [2023-09-01 00:26:23,562 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 00:26:23,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1181 events. 197/1181 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7251 event pairs, 1 based on Foata normal form. 0/885 useless extension candidates. Maximal degree in co-relation 720. Up to 32 conditions per place. [2023-09-01 00:26:23,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 324 transitions, 696 flow [2023-09-01 00:26:23,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 324 transitions, 696 flow [2023-09-01 00:26:23,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:23,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 324 transitions, 696 flow [2023-09-01 00:26:23,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 324 transitions, 696 flow [2023-09-01 00:26:23,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 324 transitions, 696 flow [2023-09-01 00:26:23,763 INFO L130 PetriNetUnfolder]: 197/1181 cut-off events. [2023-09-01 00:26:23,764 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 00:26:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1181 events. 197/1181 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7251 event pairs, 1 based on Foata normal form. 0/885 useless extension candidates. Maximal degree in co-relation 720. Up to 32 conditions per place. [2023-09-01 00:26:23,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 61560 [2023-09-01 00:26:28,146 INFO L134 LiptonReduction]: Checked pairs total: 133289 [2023-09-01 00:26:28,147 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 00:26:28,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:28,150 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;@b8378b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:28,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:28,160 INFO L130 PetriNetUnfolder]: 28/146 cut-off events. [2023-09-01 00:26:28,160 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 00:26:28,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:28,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:26:28,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:28,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:28,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1129124678, now seen corresponding path program 1 times [2023-09-01 00:26:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639252115] [2023-09-01 00:26:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:28,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:28,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:28,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:28,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:28,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:28,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:26:28,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:28,220 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:28,220 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:28,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:26:28,260 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:26:28,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 438 transitions, 954 flow [2023-09-01 00:26:29,095 INFO L130 PetriNetUnfolder]: 664/3483 cut-off events. [2023-09-01 00:26:29,098 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 00:26:29,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 3483 events. 664/3483 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26755 event pairs, 32 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 2179. Up to 192 conditions per place. [2023-09-01 00:26:29,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 438 transitions, 954 flow [2023-09-01 00:26:29,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 438 transitions, 954 flow [2023-09-01 00:26:29,189 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:29,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 438 transitions, 954 flow [2023-09-01 00:26:29,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 438 transitions, 954 flow [2023-09-01 00:26:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 438 transitions, 954 flow [2023-09-01 00:26:29,877 INFO L130 PetriNetUnfolder]: 664/3483 cut-off events. [2023-09-01 00:26:29,878 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 00:26:29,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 3483 events. 664/3483 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26755 event pairs, 32 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 2179. Up to 192 conditions per place. [2023-09-01 00:26:30,175 INFO L119 LiptonReduction]: Number of co-enabled transitions 130572 [2023-09-01 00:26:35,065 INFO L134 LiptonReduction]: Checked pairs total: 317638 [2023-09-01 00:26:35,065 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-09-01 00:26:35,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:35,071 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;@b8378b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:35,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:35,095 INFO L130 PetriNetUnfolder]: 76/338 cut-off events. [2023-09-01 00:26:35,096 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 00:26:35,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:35,096 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:26:35,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:35,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1963499021, now seen corresponding path program 1 times [2023-09-01 00:26:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:35,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897908523] [2023-09-01 00:26:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:35,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:35,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:35,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:35,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:35,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:35,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:35,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:26:35,197 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:35,198 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:35,198 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:35,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:26:35,254 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 00:26:35,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 552 transitions, 1216 flow [2023-09-01 00:26:38,699 INFO L130 PetriNetUnfolder]: 2647/11731 cut-off events. [2023-09-01 00:26:38,700 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 00:26:38,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13896 conditions, 11731 events. 2647/11731 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 112907 event pairs, 313 based on Foata normal form. 0/8995 useless extension candidates. Maximal degree in co-relation 7220. Up to 1024 conditions per place. [2023-09-01 00:26:38,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 552 transitions, 1216 flow [2023-09-01 00:26:39,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 453 places, 552 transitions, 1216 flow [2023-09-01 00:26:39,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:39,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 453 places, 552 transitions, 1216 flow [2023-09-01 00:26:39,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 453 places, 552 transitions, 1216 flow [2023-09-01 00:26:39,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 552 transitions, 1216 flow [2023-09-01 00:26:41,947 INFO L130 PetriNetUnfolder]: 2647/11731 cut-off events. [2023-09-01 00:26:41,947 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 00:26:42,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13896 conditions, 11731 events. 2647/11731 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 112907 event pairs, 313 based on Foata normal form. 0/8995 useless extension candidates. Maximal degree in co-relation 7220. Up to 1024 conditions per place. [2023-09-01 00:26:42,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 225072 [2023-09-01 00:26:48,246 INFO L134 LiptonReduction]: Checked pairs total: 519706 [2023-09-01 00:26:48,247 INFO L136 LiptonReduction]: Total number of compositions: 362 [2023-09-01 00:26:48,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:48,259 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;@b8378b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:48,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:26:48,301 INFO L130 PetriNetUnfolder]: 127/542 cut-off events. [2023-09-01 00:26:48,301 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-09-01 00:26:48,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:48,301 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:48,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:48,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash 775023310, now seen corresponding path program 1 times [2023-09-01 00:26:48,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:48,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270599900] [2023-09-01 00:26:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:48,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:48,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:48,351 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:48,351 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:48,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:26:48,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:26:48,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:26:48,352 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:48,353 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:26:48,353 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:48,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:26:48,417 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 00:26:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 666 transitions, 1482 flow [2023-09-01 00:27:02,359 INFO L130 PetriNetUnfolder]: 11762/44501 cut-off events. [2023-09-01 00:27:02,359 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 00:27:04,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54927 conditions, 44501 events. 11762/44501 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 525390 event pairs, 2148 based on Foata normal form. 0/34662 useless extension candidates. Maximal degree in co-relation 27299. Up to 5120 conditions per place. [2023-09-01 00:27:04,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 666 transitions, 1482 flow [2023-09-01 00:27:05,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 666 transitions, 1482 flow [2023-09-01 00:27:05,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:27:05,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 543 places, 666 transitions, 1482 flow [2023-09-01 00:27:05,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 543 places, 666 transitions, 1482 flow [2023-09-01 00:27:05,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 666 transitions, 1482 flow [2023-09-01 00:27:18,559 INFO L130 PetriNetUnfolder]: 11762/44501 cut-off events. [2023-09-01 00:27:18,560 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 00:27:20,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54927 conditions, 44501 events. 11762/44501 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 525390 event pairs, 2148 based on Foata normal form. 0/34662 useless extension candidates. Maximal degree in co-relation 27299. Up to 5120 conditions per place. [2023-09-01 00:27:24,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 345060 [2023-09-01 00:27:29,950 INFO L134 LiptonReduction]: Checked pairs total: 814592 [2023-09-01 00:27:29,951 INFO L136 LiptonReduction]: Total number of compositions: 432 [2023-09-01 00:27:29,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:27:29,953 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;@b8378b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:27:29,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:27:30,039 INFO L130 PetriNetUnfolder]: 249/1015 cut-off events. [2023-09-01 00:27:30,039 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 00:27:30,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:27:30,039 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:27:30,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:27:30,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:27:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1932362560, now seen corresponding path program 1 times [2023-09-01 00:27:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:27:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528199593] [2023-09-01 00:27:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:27:30,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:27:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:30,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:27:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:30,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:27:30,084 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:27:30,085 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:27:30,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:27:30,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:27:30,085 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:27:30,086 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:27:30,086 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:27:30,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:27:30,139 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 00:27:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 633 places, 780 transitions, 1752 flow [2023-09-01 00:28:48,039 INFO L130 PetriNetUnfolder]: 53929/179553 cut-off events. [2023-09-01 00:28:48,040 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 00:29:03,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228982 conditions, 179553 events. 53929/179553 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 2507179 event pairs, 12465 based on Foata normal form. 0/141841 useless extension candidates. Maximal degree in co-relation 111675. Up to 24576 conditions per place. [2023-09-01 00:29:03,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 633 places, 780 transitions, 1752 flow [2023-09-01 00:29:09,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 633 places, 780 transitions, 1752 flow [2023-09-01 00:29:09,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:09,914 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 633 places, 780 transitions, 1752 flow [2023-09-01 00:29:09,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 633 places, 780 transitions, 1752 flow [2023-09-01 00:29:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 633 places, 780 transitions, 1752 flow [2023-09-01 00:30:19,920 INFO L130 PetriNetUnfolder]: 53929/179553 cut-off events. [2023-09-01 00:30:19,920 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 00:30:35,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228982 conditions, 179553 events. 53929/179553 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 2507179 event pairs, 12465 based on Foata normal form. 0/141841 useless extension candidates. Maximal degree in co-relation 111675. Up to 24576 conditions per place. [2023-09-01 00:31:01,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 490536 [2023-09-01 00:31:08,191 INFO L134 LiptonReduction]: Checked pairs total: 1174089 [2023-09-01 00:31:08,192 INFO L136 LiptonReduction]: Total number of compositions: 504 [2023-09-01 00:31:08,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:08,194 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;@b8378b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:08,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:31:08,339 INFO L130 PetriNetUnfolder]: 370/1464 cut-off events. [2023-09-01 00:31:08,339 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2023-09-01 00:31:08,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:08,339 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:31:08,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:08,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1476502900, now seen corresponding path program 1 times [2023-09-01 00:31:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862781024] [2023-09-01 00:31:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:08,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:08,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:08,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:08,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:08,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:31:08,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:31:08,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:31:08,389 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:08,390 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:31:08,390 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:08,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:31:08,448 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 00:31:08,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 723 places, 894 transitions, 2026 flow