./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 804a6f1d000a9eac5cab22029525644887c7b13b33bf8b82b475e09952d467ca --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:02:53,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:02:53,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:02:53,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:02:53,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:02:53,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:02:53,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:02:53,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:02:53,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:02:53,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:02:53,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:02:53,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:02:53,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:02:53,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:02:53,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:02:53,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:02:53,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:02:53,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:02:53,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:02:53,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:02:53,662 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:02:53,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:02:53,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:02:53,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:02:53,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:02:53,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:02:53,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:02:53,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:02:53,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:02:53,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:02:53,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:02:53,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:02:53,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:02:53,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:02:53,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:02:53,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:02:53,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:02:53,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:02:53,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:02:53,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:02:53,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:02:53,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:02:53,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:02:53,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:02:53,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:02:53,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:02:53,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:02:53,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:02:53,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:02:53,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:02:53,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:02:53,727 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:02:53,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:02:53,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:02:53,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:02:53,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:02:53,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:02:53,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:02:53,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:02:53,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:02:53,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:02:53,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:02:53,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:02:53,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:02:53,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:02:53,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:02:53,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:02:53,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:02:53,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:02:53,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:02:53,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:02:53,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:02:53,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:02:53,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:02:53,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:02:53,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:02:53,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804a6f1d000a9eac5cab22029525644887c7b13b33bf8b82b475e09952d467ca [2022-07-21 09:02:54,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:02:54,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:02:54,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:02:54,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:02:54,081 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:02:54,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2022-07-21 09:02:54,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/317c064d6/22f2604265ca42c5b6b182693611cba3/FLAG82ab1c611 [2022-07-21 09:02:54,569 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:02:54,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2022-07-21 09:02:54,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/317c064d6/22f2604265ca42c5b6b182693611cba3/FLAG82ab1c611 [2022-07-21 09:02:54,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/317c064d6/22f2604265ca42c5b6b182693611cba3 [2022-07-21 09:02:54,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:02:54,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:02:54,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:02:54,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:02:54,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:02:54,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:02:54" (1/1) ... [2022-07-21 09:02:54,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7251c971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:54, skipping insertion in model container [2022-07-21 09:02:54,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:02:54" (1/1) ... [2022-07-21 09:02:54,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:02:55,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:02:55,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4837,4850] [2022-07-21 09:02:55,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:02:55,236 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:02:55,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4837,4850] [2022-07-21 09:02:55,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:02:55,308 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:02:55,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55 WrapperNode [2022-07-21 09:02:55,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:02:55,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:02:55,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:02:55,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:02:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,375 INFO L137 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 318 [2022-07-21 09:02:55,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:02:55,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:02:55,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:02:55,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:02:55,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:02:55,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:02:55,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:02:55,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:02:55,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (1/1) ... [2022-07-21 09:02:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:02:55,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:55,469 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) [2022-07-21 09:02:55,494 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 [2022-07-21 09:02:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:02:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:02:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:02:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:02:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:02:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:02:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:02:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:02:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:02:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:02:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-21 09:02:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-21 09:02:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:02:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-21 09:02:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-21 09:02:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-21 09:02:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-21 09:02:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2022-07-21 09:02:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2022-07-21 09:02:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:02:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:02:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:02:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:02:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:02:55,518 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:02:55,597 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:02:55,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:02:55,911 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:02:55,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:02:55,998 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:02:56,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:02:56 BoogieIcfgContainer [2022-07-21 09:02:56,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:02:56,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:02:56,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:02:56,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:02:56,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:02:54" (1/3) ... [2022-07-21 09:02:56,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a9b628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:02:56, skipping insertion in model container [2022-07-21 09:02:56,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:55" (2/3) ... [2022-07-21 09:02:56,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a9b628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:02:56, skipping insertion in model container [2022-07-21 09:02:56,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:02:56" (3/3) ... [2022-07-21 09:02:56,008 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2022-07-21 09:02:56,013 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:02:56,020 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:02:56,020 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:02:56,021 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:02:56,130 INFO L135 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-07-21 09:02:56,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 211 transitions, 478 flow [2022-07-21 09:02:56,259 INFO L129 PetriNetUnfolder]: 2/204 cut-off events. [2022-07-21 09:02:56,259 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 09:02:56,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 204 events. 2/204 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-07-21 09:02:56,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 211 transitions, 478 flow [2022-07-21 09:02:56,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 185 transitions, 412 flow [2022-07-21 09:02:56,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:02:56,287 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@184a469f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2dc42fbb [2022-07-21 09:02:56,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-21 09:02:56,346 INFO L129 PetriNetUnfolder]: 2/184 cut-off events. [2022-07-21 09:02:56,346 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 09:02:56,346 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:56,347 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:56,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-21 09:02:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1101305519, now seen corresponding path program 1 times [2022-07-21 09:02:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:56,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309518364] [2022-07-21 09:02:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:57,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309518364] [2022-07-21 09:02:57,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309518364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:57,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:57,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:02:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845049670] [2022-07-21 09:02:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:57,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:02:57,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:02:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:02:57,462 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 211 [2022-07-21 09:02:57,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 185 transitions, 412 flow. Second operand has 10 states, 10 states have (on average 156.5) internal successors, (1565), 10 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:02:57,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:57,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 211 [2022-07-21 09:02:57,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand