./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_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_27-funptr_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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --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 00:38:19,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:38:19,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:38:19,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:38:19,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:38:19,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:38:19,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:38:19,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:38:19,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:38:19,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:38:19,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:38:19,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:38:19,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:38:19,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:38:19,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:38:19,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:38:19,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:38:19,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:38:19,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:38:19,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:38:19,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:38:19,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:38:19,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:38:19,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:38:19,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:38:19,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:38:19,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:38:19,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:38:19,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:38:19,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:38:19,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:38:19,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:38:19,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:38:19,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:38:19,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:38:19,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:38:19,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:38:19,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:38:19,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:38:19,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:38:19,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:38:19,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:38:20,007 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:38:20,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:38:20,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:38:20,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:38:20,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:38:20,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:38:20,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:38:20,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:38:20,011 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:38:20,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:38:20,012 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:38:20,012 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:38:20,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:38:20,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:38:20,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:38:20,013 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:38:20,013 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:38:20,013 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:38:20,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:38:20,014 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:38:20,014 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:38:20,014 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:38:20,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:38:20,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:38:20,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:38:20,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:38:20,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:38:20,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:38:20,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:38:20,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:38:20,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:38:20,016 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:38:20,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:38:20,016 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:38:20,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:38:20,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:38:20,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:38:20,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:38:20,359 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:38:20,359 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:38:20,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-09-01 00:38:21,605 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:38:21,885 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:38:21,886 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-09-01 00:38:21,903 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb4b1c91/b114f966a22f4561a87b3578801d0c1e/FLAG854846609 [2023-09-01 00:38:21,928 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb4b1c91/b114f966a22f4561a87b3578801d0c1e [2023-09-01 00:38:21,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:38:21,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:38:21,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:38:21,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:38:21,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:38:21,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:38:21" (1/1) ... [2023-09-01 00:38:21,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579db0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:21, skipping insertion in model container [2023-09-01 00:38:21,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:38:21" (1/1) ... [2023-09-01 00:38:21,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:38:22,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:38:22,420 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_27-funptr_racing.i[41323,41336] [2023-09-01 00:38:22,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:38:22,462 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:38:22,503 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_27-funptr_racing.i[41323,41336] [2023-09-01 00:38:22,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:38:22,577 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 00:38:22,583 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:38:22,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22 WrapperNode [2023-09-01 00:38:22,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:38:22,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:38:22,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:38:22,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:38:22,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,632 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 148 [2023-09-01 00:38:22,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:38:22,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:38:22,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:38:22,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:38:22,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:38:22,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:38:22,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:38:22,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:38:22,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (1/1) ... [2023-09-01 00:38:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:38:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:38:22,690 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 00:38:22,697 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 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:38:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:38:22,724 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:38:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:38:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:38:22,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:38:22,726 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 00:38:22,829 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:38:22,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:38:23,133 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:38:23,139 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:38:23,140 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-09-01 00:38:23,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:38:23 BoogieIcfgContainer [2023-09-01 00:38:23,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:38:23,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:38:23,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:38:23,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:38:23,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:38:21" (1/3) ... [2023-09-01 00:38:23,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd36d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:38:23, skipping insertion in model container [2023-09-01 00:38:23,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:22" (2/3) ... [2023-09-01 00:38:23,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd36d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:38:23, skipping insertion in model container [2023-09-01 00:38:23,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:38:23" (3/3) ... [2023-09-01 00:38:23,148 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-09-01 00:38:23,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:38:23,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:38:23,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:38:23,243 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:38:23,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 153 transitions, 314 flow [2023-09-01 00:38:23,358 INFO L130 PetriNetUnfolder]: 24/197 cut-off events. [2023-09-01 00:38:23,358 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:38:23,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 197 events. 24/197 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-09-01 00:38:23,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 153 transitions, 314 flow [2023-09-01 00:38:23,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 148 transitions, 301 flow [2023-09-01 00:38:23,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:23,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 148 transitions, 301 flow [2023-09-01 00:38:23,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 148 transitions, 301 flow [2023-09-01 00:38:23,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 148 transitions, 301 flow [2023-09-01 00:38:23,413 INFO L130 PetriNetUnfolder]: 23/192 cut-off events. [2023-09-01 00:38:23,414 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:38:23,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 192 events. 23/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 551 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-09-01 00:38:23,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 6200 [2023-09-01 00:38:26,630 INFO L134 LiptonReduction]: Checked pairs total: 12310 [2023-09-01 00:38:26,630 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-09-01 00:38:26,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:26,647 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:26,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:26,652 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-09-01 00:38:26,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:38:26,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:26,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:38:26,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:26,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 512981673, now seen corresponding path program 1 times [2023-09-01 00:38:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166259009] [2023-09-01 00:38:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:26,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:26,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:26,814 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:26,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:38:26,816 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:26,819 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:26,819 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:26,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:38:26,844 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:38:26,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 217 transitions, 452 flow [2023-09-01 00:38:26,922 INFO L130 PetriNetUnfolder]: 45/334 cut-off events. [2023-09-01 00:38:26,922 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:38:26,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 334 events. 45/334 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1210 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 199. Up to 8 conditions per place. [2023-09-01 00:38:26,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 217 transitions, 452 flow [2023-09-01 00:38:26,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 217 transitions, 452 flow [2023-09-01 00:38:26,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:26,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 217 transitions, 452 flow [2023-09-01 00:38:26,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 217 transitions, 452 flow [2023-09-01 00:38:26,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 217 transitions, 452 flow [2023-09-01 00:38:26,984 INFO L130 PetriNetUnfolder]: 45/334 cut-off events. [2023-09-01 00:38:26,984 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:38:26,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 334 events. 45/334 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1210 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 199. Up to 8 conditions per place. [2023-09-01 00:38:27,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 21452 [2023-09-01 00:38:30,462 INFO L134 LiptonReduction]: Checked pairs total: 58073 [2023-09-01 00:38:30,462 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-09-01 00:38:30,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:30,466 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:30,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:30,474 INFO L130 PetriNetUnfolder]: 10/79 cut-off events. [2023-09-01 00:38:30,474 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:38:30,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:30,474 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:38:30,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:30,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1110790770, now seen corresponding path program 1 times [2023-09-01 00:38:30,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974961698] [2023-09-01 00:38:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:30,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:30,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:30,533 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:30,534 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:30,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:38:30,534 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:30,535 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:30,535 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:30,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:38:30,560 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:38:30,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 281 transitions, 592 flow [2023-09-01 00:38:30,646 INFO L130 PetriNetUnfolder]: 71/512 cut-off events. [2023-09-01 00:38:30,647 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:38:30,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 512 events. 71/512 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2081 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 342. Up to 16 conditions per place. [2023-09-01 00:38:30,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 281 transitions, 592 flow [2023-09-01 00:38:30,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 281 transitions, 592 flow [2023-09-01 00:38:30,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:30,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 281 transitions, 592 flow [2023-09-01 00:38:30,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 281 transitions, 592 flow [2023-09-01 00:38:30,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 281 transitions, 592 flow [2023-09-01 00:38:30,720 INFO L130 PetriNetUnfolder]: 71/512 cut-off events. [2023-09-01 00:38:30,720 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:38:30,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 512 events. 71/512 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2081 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 342. Up to 16 conditions per place. [2023-09-01 00:38:30,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 44268 [2023-09-01 00:38:34,273 INFO L134 LiptonReduction]: Checked pairs total: 145069 [2023-09-01 00:38:34,274 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-09-01 00:38:34,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:34,277 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:34,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:34,287 INFO L130 PetriNetUnfolder]: 25/138 cut-off events. [2023-09-01 00:38:34,288 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:38:34,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:34,288 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:38:34,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:34,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1090959285, now seen corresponding path program 1 times [2023-09-01 00:38:34,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:34,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185623826] [2023-09-01 00:38:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:34,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:34,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:34,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:34,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:34,340 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:34,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:38:34,341 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:34,341 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:34,342 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:34,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:38:34,369 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:38:34,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 345 transitions, 734 flow [2023-09-01 00:38:34,503 INFO L130 PetriNetUnfolder]: 109/774 cut-off events. [2023-09-01 00:38:34,503 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:38:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 774 events. 109/774 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3463 event pairs, 6 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 532. Up to 32 conditions per place. [2023-09-01 00:38:34,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 345 transitions, 734 flow [2023-09-01 00:38:34,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 345 transitions, 734 flow [2023-09-01 00:38:34,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:34,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 345 transitions, 734 flow [2023-09-01 00:38:34,521 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 345 transitions, 734 flow [2023-09-01 00:38:34,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 345 transitions, 734 flow [2023-09-01 00:38:34,657 INFO L130 PetriNetUnfolder]: 109/774 cut-off events. [2023-09-01 00:38:34,657 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:38:34,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 774 events. 109/774 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3463 event pairs, 6 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 532. Up to 32 conditions per place. [2023-09-01 00:38:34,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 75144 [2023-09-01 00:38:38,543 INFO L134 LiptonReduction]: Checked pairs total: 250198 [2023-09-01 00:38:38,543 INFO L136 LiptonReduction]: Total number of compositions: 223 [2023-09-01 00:38:38,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:38,546 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:38,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:38,564 INFO L130 PetriNetUnfolder]: 46/210 cut-off events. [2023-09-01 00:38:38,564 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 00:38:38,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:38,564 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:38:38,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:38,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1253410506, now seen corresponding path program 1 times [2023-09-01 00:38:38,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:38,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662706967] [2023-09-01 00:38:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:38,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:38,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:38,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:38,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:38,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:38,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:38:38,618 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:38,619 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:38,619 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:38,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:38:38,648 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:38:38,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 409 transitions, 878 flow [2023-09-01 00:38:38,916 INFO L130 PetriNetUnfolder]: 175/1208 cut-off events. [2023-09-01 00:38:38,916 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:38:38,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 1208 events. 175/1208 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6305 event pairs, 23 based on Foata normal form. 0/935 useless extension candidates. Maximal degree in co-relation 819. Up to 80 conditions per place. [2023-09-01 00:38:38,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 409 transitions, 878 flow [2023-09-01 00:38:38,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 409 transitions, 878 flow [2023-09-01 00:38:38,946 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:38,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 409 transitions, 878 flow [2023-09-01 00:38:38,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 409 transitions, 878 flow [2023-09-01 00:38:38,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 409 transitions, 878 flow [2023-09-01 00:38:39,210 INFO L130 PetriNetUnfolder]: 175/1208 cut-off events. [2023-09-01 00:38:39,211 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:38:39,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 1208 events. 175/1208 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6305 event pairs, 23 based on Foata normal form. 0/935 useless extension candidates. Maximal degree in co-relation 819. Up to 80 conditions per place. [2023-09-01 00:38:39,295 INFO L119 LiptonReduction]: Number of co-enabled transitions 114080 [2023-09-01 00:38:43,293 INFO L134 LiptonReduction]: Checked pairs total: 352451 [2023-09-01 00:38:43,293 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-09-01 00:38:43,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:43,296 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:43,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:43,319 INFO L130 PetriNetUnfolder]: 64/283 cut-off events. [2023-09-01 00:38:43,320 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 00:38:43,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:43,320 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:38:43,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:43,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1701513367, now seen corresponding path program 1 times [2023-09-01 00:38:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:43,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651752300] [2023-09-01 00:38:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:43,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:43,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:43,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:43,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:43,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:43,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:38:43,420 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:43,421 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:43,422 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:43,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:38:43,475 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:38:43,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 473 transitions, 1024 flow [2023-09-01 00:38:43,960 INFO L130 PetriNetUnfolder]: 305/1994 cut-off events. [2023-09-01 00:38:43,960 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:38:43,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1994 events. 305/1994 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 12299 event pairs, 72 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 1307. Up to 192 conditions per place. [2023-09-01 00:38:43,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 473 transitions, 1024 flow [2023-09-01 00:38:44,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 473 transitions, 1024 flow [2023-09-01 00:38:44,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:44,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 397 places, 473 transitions, 1024 flow [2023-09-01 00:38:44,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 397 places, 473 transitions, 1024 flow [2023-09-01 00:38:44,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 473 transitions, 1024 flow [2023-09-01 00:38:44,456 INFO L130 PetriNetUnfolder]: 305/1994 cut-off events. [2023-09-01 00:38:44,457 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:38:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1994 events. 305/1994 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 12299 event pairs, 72 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 1307. Up to 192 conditions per place. [2023-09-01 00:38:44,601 INFO L119 LiptonReduction]: Number of co-enabled transitions 161076 [2023-09-01 00:38:48,720 INFO L134 LiptonReduction]: Checked pairs total: 502165 [2023-09-01 00:38:48,720 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-09-01 00:38:48,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:48,725 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:48,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:48,781 INFO L130 PetriNetUnfolder]: 84/366 cut-off events. [2023-09-01 00:38:48,782 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 00:38:48,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:48,782 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:38:48,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:48,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2121344516, now seen corresponding path program 1 times [2023-09-01 00:38:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921272191] [2023-09-01 00:38:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:48,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:48,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:48,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:48,877 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:48,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:48,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:38:48,878 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:48,881 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:48,881 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:48,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:38:48,927 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:38:48,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 537 transitions, 1172 flow [2023-09-01 00:38:49,770 INFO L130 PetriNetUnfolder]: 579/3500 cut-off events. [2023-09-01 00:38:49,770 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:38:49,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 3500 events. 579/3500 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25963 event pairs, 201 based on Foata normal form. 0/2705 useless extension candidates. Maximal degree in co-relation 2212. Up to 448 conditions per place. [2023-09-01 00:38:49,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 537 transitions, 1172 flow [2023-09-01 00:38:49,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 537 transitions, 1172 flow [2023-09-01 00:38:49,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:49,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 449 places, 537 transitions, 1172 flow [2023-09-01 00:38:49,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 449 places, 537 transitions, 1172 flow [2023-09-01 00:38:49,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 537 transitions, 1172 flow [2023-09-01 00:38:50,879 INFO L130 PetriNetUnfolder]: 579/3500 cut-off events. [2023-09-01 00:38:50,879 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:38:50,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 3500 events. 579/3500 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25963 event pairs, 201 based on Foata normal form. 0/2705 useless extension candidates. Maximal degree in co-relation 2212. Up to 448 conditions per place. [2023-09-01 00:38:51,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 216132 [2023-09-01 00:38:55,633 INFO L134 LiptonReduction]: Checked pairs total: 692596 [2023-09-01 00:38:55,633 INFO L136 LiptonReduction]: Total number of compositions: 333 [2023-09-01 00:38:55,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:55,635 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:55,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:55,685 INFO L130 PetriNetUnfolder]: 107/460 cut-off events. [2023-09-01 00:38:55,685 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 00:38:55,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:55,685 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:38:55,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:55,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -163473529, now seen corresponding path program 1 times [2023-09-01 00:38:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278124102] [2023-09-01 00:38:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:55,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:55,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:55,729 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:55,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:55,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:38:55,730 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:55,730 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:55,730 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:55,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:38:55,766 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:38:55,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 601 transitions, 1322 flow [2023-09-01 00:38:57,609 INFO L130 PetriNetUnfolder]: 1173/6478 cut-off events. [2023-09-01 00:38:57,609 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:38:57,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 6478 events. 1173/6478 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 56144 event pairs, 522 based on Foata normal form. 0/5022 useless extension candidates. Maximal degree in co-relation 3982. Up to 1024 conditions per place. [2023-09-01 00:38:57,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 501 places, 601 transitions, 1322 flow [2023-09-01 00:38:57,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 601 transitions, 1322 flow [2023-09-01 00:38:57,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:57,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 501 places, 601 transitions, 1322 flow [2023-09-01 00:38:57,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 501 places, 601 transitions, 1322 flow [2023-09-01 00:38:57,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 601 transitions, 1322 flow [2023-09-01 00:38:59,448 INFO L130 PetriNetUnfolder]: 1173/6478 cut-off events. [2023-09-01 00:38:59,448 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:38:59,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 6478 events. 1173/6478 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 56144 event pairs, 522 based on Foata normal form. 0/5022 useless extension candidates. Maximal degree in co-relation 3982. Up to 1024 conditions per place. [2023-09-01 00:39:00,124 INFO L119 LiptonReduction]: Number of co-enabled transitions 279248 [2023-09-01 00:39:05,147 INFO L134 LiptonReduction]: Checked pairs total: 987959 [2023-09-01 00:39:05,147 INFO L136 LiptonReduction]: Total number of compositions: 365 [2023-09-01 00:39:05,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:05,149 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:05,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:05,218 INFO L130 PetriNetUnfolder]: 135/575 cut-off events. [2023-09-01 00:39:05,218 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-09-01 00:39:05,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:05,218 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:05,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:05,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:05,219 INFO L85 PathProgramCache]: Analyzing trace with hash -682200363, now seen corresponding path program 1 times [2023-09-01 00:39:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:05,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709686553] [2023-09-01 00:39:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:05,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:05,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:05,264 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:05,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:39:05,265 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:05,265 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:05,265 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:05,265 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:39:05,311 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:39:05,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 665 transitions, 1474 flow [2023-09-01 00:39:09,060 INFO L130 PetriNetUnfolder]: 2471/12464 cut-off events. [2023-09-01 00:39:09,060 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:39:09,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 12464 events. 2471/12464 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 126416 event pairs, 1291 based on Foata normal form. 0/9707 useless extension candidates. Maximal degree in co-relation 7545. Up to 2304 conditions per place. [2023-09-01 00:39:09,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 553 places, 665 transitions, 1474 flow [2023-09-01 00:39:09,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 553 places, 665 transitions, 1474 flow [2023-09-01 00:39:09,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:09,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 553 places, 665 transitions, 1474 flow [2023-09-01 00:39:09,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 553 places, 665 transitions, 1474 flow [2023-09-01 00:39:09,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 665 transitions, 1474 flow [2023-09-01 00:39:12,967 INFO L130 PetriNetUnfolder]: 2471/12464 cut-off events. [2023-09-01 00:39:12,968 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:39:13,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 12464 events. 2471/12464 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 126416 event pairs, 1291 based on Foata normal form. 0/9707 useless extension candidates. Maximal degree in co-relation 7545. Up to 2304 conditions per place. [2023-09-01 00:39:14,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 350424 [2023-09-01 00:39:19,471 INFO L134 LiptonReduction]: Checked pairs total: 1122078 [2023-09-01 00:39:19,471 INFO L136 LiptonReduction]: Total number of compositions: 405 [2023-09-01 00:39:19,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:19,473 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:19,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:19,557 INFO L130 PetriNetUnfolder]: 172/723 cut-off events. [2023-09-01 00:39:19,557 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-09-01 00:39:19,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:19,557 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:19,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:19,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 332957318, now seen corresponding path program 1 times [2023-09-01 00:39:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:19,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682102832] [2023-09-01 00:39:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:19,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:19,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:19,598 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:19,598 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:39:19,599 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:19,599 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:19,599 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:19,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:39:19,642 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:39:19,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 729 transitions, 1628 flow [2023-09-01 00:39:27,532 INFO L130 PetriNetUnfolder]: 5305/24594 cut-off events. [2023-09-01 00:39:27,532 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:39:28,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29800 conditions, 24594 events. 5305/24594 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 278770 event pairs, 3084 based on Foata normal form. 0/19256 useless extension candidates. Maximal degree in co-relation 14821. Up to 5120 conditions per place. [2023-09-01 00:39:28,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 729 transitions, 1628 flow [2023-09-01 00:39:28,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 605 places, 729 transitions, 1628 flow [2023-09-01 00:39:28,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:28,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 605 places, 729 transitions, 1628 flow [2023-09-01 00:39:28,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 605 places, 729 transitions, 1628 flow [2023-09-01 00:39:28,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 729 transitions, 1628 flow [2023-09-01 00:39:36,568 INFO L130 PetriNetUnfolder]: 5305/24594 cut-off events. [2023-09-01 00:39:36,568 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:39:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29800 conditions, 24594 events. 5305/24594 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 278770 event pairs, 3084 based on Foata normal form. 0/19256 useless extension candidates. Maximal degree in co-relation 14821. Up to 5120 conditions per place. [2023-09-01 00:39:39,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 429660 [2023-09-01 00:39:45,017 INFO L134 LiptonReduction]: Checked pairs total: 1537969 [2023-09-01 00:39:45,017 INFO L136 LiptonReduction]: Total number of compositions: 441 [2023-09-01 00:39:45,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:45,019 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:45,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:45,116 INFO L130 PetriNetUnfolder]: 224/918 cut-off events. [2023-09-01 00:39:45,116 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-09-01 00:39:45,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:45,117 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:45,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:45,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:45,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1821603137, now seen corresponding path program 1 times [2023-09-01 00:39:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810442322] [2023-09-01 00:39:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:45,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:45,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:45,165 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:45,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:45,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:39:45,166 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:45,166 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:45,166 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:45,166 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:39:45,211 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:39:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 793 transitions, 1784 flow [2023-09-01 00:40:02,801 INFO L130 PetriNetUnfolder]: 11467/49268 cut-off events. [2023-09-01 00:40:02,801 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:40:04,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60632 conditions, 49268 events. 11467/49268 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 626227 event pairs, 7181 based on Foata normal form. 0/38789 useless extension candidates. Maximal degree in co-relation 29778. Up to 11264 conditions per place. [2023-09-01 00:40:04,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 793 transitions, 1784 flow [2023-09-01 00:40:05,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 657 places, 793 transitions, 1784 flow [2023-09-01 00:40:05,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:05,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 657 places, 793 transitions, 1784 flow [2023-09-01 00:40:05,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 657 places, 793 transitions, 1784 flow [2023-09-01 00:40:05,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 793 transitions, 1784 flow [2023-09-01 00:40:22,902 INFO L130 PetriNetUnfolder]: 11467/49268 cut-off events. [2023-09-01 00:40:22,902 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:40:24,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60632 conditions, 49268 events. 11467/49268 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 626227 event pairs, 7181 based on Foata normal form. 0/38789 useless extension candidates. Maximal degree in co-relation 29778. Up to 11264 conditions per place. [2023-09-01 00:40:29,407 INFO L119 LiptonReduction]: Number of co-enabled transitions 516956 [2023-09-01 00:40:36,171 INFO L134 LiptonReduction]: Checked pairs total: 1657330 [2023-09-01 00:40:36,171 INFO L136 LiptonReduction]: Total number of compositions: 478 [2023-09-01 00:40:36,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:36,173 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:36,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:36,310 INFO L130 PetriNetUnfolder]: 300/1185 cut-off events. [2023-09-01 00:40:36,310 INFO L131 PetriNetUnfolder]: For 536/536 co-relation queries the response was YES. [2023-09-01 00:40:36,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:36,310 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:36,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:36,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1194606283, now seen corresponding path program 1 times [2023-09-01 00:40:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238506053] [2023-09-01 00:40:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:36,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:36,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:36,365 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:36,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:36,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:40:36,366 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:36,367 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:36,367 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:36,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:40:36,503 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:40:36,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 709 places, 857 transitions, 1942 flow [2023-09-01 00:41:14,667 INFO L130 PetriNetUnfolder]: 24797/99542 cut-off events. [2023-09-01 00:41:14,667 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:41:20,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124233 conditions, 99542 events. 24797/99542 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2406. Compared 1386522 event pairs, 16398 based on Foata normal form. 0/78802 useless extension candidates. Maximal degree in co-relation 60608. Up to 24576 conditions per place. [2023-09-01 00:41:20,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 709 places, 857 transitions, 1942 flow [2023-09-01 00:41:23,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 709 places, 857 transitions, 1942 flow [2023-09-01 00:41:23,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:23,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 709 places, 857 transitions, 1942 flow [2023-09-01 00:41:23,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 709 places, 857 transitions, 1942 flow [2023-09-01 00:41:23,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 709 places, 857 transitions, 1942 flow [2023-09-01 00:42:04,038 INFO L130 PetriNetUnfolder]: 24797/99542 cut-off events. [2023-09-01 00:42:04,038 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:42:09,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124233 conditions, 99542 events. 24797/99542 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2406. Compared 1386522 event pairs, 16398 based on Foata normal form. 0/78802 useless extension candidates. Maximal degree in co-relation 60608. Up to 24576 conditions per place. [2023-09-01 00:42:24,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 612312 [2023-09-01 00:42:30,245 INFO L134 LiptonReduction]: Checked pairs total: 2250872 [2023-09-01 00:42:30,245 INFO L136 LiptonReduction]: Total number of compositions: 517 [2023-09-01 00:42:30,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:30,246 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;@10399cc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:30,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:30,455 INFO L130 PetriNetUnfolder]: 415/1563 cut-off events. [2023-09-01 00:42:30,455 INFO L131 PetriNetUnfolder]: For 771/771 co-relation queries the response was YES. [2023-09-01 00:42:30,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:30,456 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:42:30,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:30,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash -532587087, now seen corresponding path program 1 times [2023-09-01 00:42:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004522676] [2023-09-01 00:42:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:30,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:30,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:30,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:30,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:30,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:42:30,524 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:30,525 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:30,525 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:30,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:42:30,578 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:42:30,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 761 places, 921 transitions, 2102 flow