./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-8.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 f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:28:30,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:28:30,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:28:30,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:28:30,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:28:30,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:28:30,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:28:30,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:28:30,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:28:30,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:28:30,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:28:30,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:28:30,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:28:30,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:28:30,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:28:30,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:28:30,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:28:30,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:28:30,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:28:30,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:28:30,473 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:28:30,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:28:30,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:28:30,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:28:30,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:28:30,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:28:30,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:28:30,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:28:30,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:28:30,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:28:30,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:28:30,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:28:30,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:28:30,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:28:30,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:28:30,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:28:30,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:28:30,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:28:30,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:28:30,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:28:30,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:28:30,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:28:30,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:28:30,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:28:30,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:28:30,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:28:30,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:28:30,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:28:30,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:28:30,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:28:30,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:28:30,508 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:28:30,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:28:30,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:28:30,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:28:30,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:28:30,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:28:30,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:28:30,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:28:30,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:28:30,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:28:30,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:28:30,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:28:30,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:28:30,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:28:30,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:28:30,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:28:30,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:30,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:28:30,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:28:30,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:28:30,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:28:30,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:28:30,512 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:28:30,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:28:30,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:28:30,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f [2022-07-12 10:28:30,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:28:30,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:28:30,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:28:30,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:28:30,708 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:28:30,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-07-12 10:28:30,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc46fbfea/8b182d9a55f44a61a7fbc4648bc8980d/FLAG569969d9f [2022-07-12 10:28:31,109 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:28:31,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-07-12 10:28:31,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc46fbfea/8b182d9a55f44a61a7fbc4648bc8980d/FLAG569969d9f [2022-07-12 10:28:31,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc46fbfea/8b182d9a55f44a61a7fbc4648bc8980d [2022-07-12 10:28:31,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:28:31,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:28:31,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:31,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:28:31,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:28:31,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210792bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31, skipping insertion in model container [2022-07-12 10:28:31,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:28:31,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:28:31,328 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-8.wvr.c[5274,5287] [2022-07-12 10:28:31,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:31,344 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:28:31,380 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-8.wvr.c[5274,5287] [2022-07-12 10:28:31,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:31,404 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:28:31,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31 WrapperNode [2022-07-12 10:28:31,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:31,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:31,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:28:31,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:28:31,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,476 INFO L137 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 358 [2022-07-12 10:28:31,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:31,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:28:31,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:28:31,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:28:31,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:28:31,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:28:31,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:28:31,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:28:31,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (1/1) ... [2022-07-12 10:28:31,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:31,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:31,524 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) [2022-07-12 10:28:31,532 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 [2022-07-12 10:28:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:28:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:28:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:28:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:28:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:28:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:28:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:28:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:28:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:28:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:28:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:28:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:28:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:28:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-12 10:28:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-12 10:28:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-12 10:28:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-12 10:28:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2022-07-12 10:28:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2022-07-12 10:28:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2022-07-12 10:28:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2022-07-12 10:28:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:28:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:28:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:28:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:28:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:28:31,562 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:28:31,653 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:28:31,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:28:31,919 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:28:31,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:28:31,988 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:28:31,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:31 BoogieIcfgContainer [2022-07-12 10:28:31,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:28:31,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:28:31,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:28:31,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:28:31,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:28:31" (1/3) ... [2022-07-12 10:28:31,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6ab203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:31, skipping insertion in model container [2022-07-12 10:28:31,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:31" (2/3) ... [2022-07-12 10:28:31,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6ab203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:31, skipping insertion in model container [2022-07-12 10:28:31,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:31" (3/3) ... [2022-07-12 10:28:31,995 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2022-07-12 10:28:31,998 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:28:32,019 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:28:32,019 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:28:32,019 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:28:32,120 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-12 10:28:32,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 257 places, 234 transitions, 532 flow [2022-07-12 10:28:32,248 INFO L129 PetriNetUnfolder]: 2/226 cut-off events. [2022-07-12 10:28:32,248 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-12 10:28:32,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 226 events. 2/226 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 105 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-07-12 10:28:32,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 234 transitions, 532 flow [2022-07-12 10:28:32,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 205 transitions, 458 flow [2022-07-12 10:28:32,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:28:32,266 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@3746dcfa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33fbf72a [2022-07-12 10:28:32,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-12 10:28:32,290 INFO L129 PetriNetUnfolder]: 2/204 cut-off events. [2022-07-12 10:28:32,290 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-12 10:28:32,290 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:32,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:32,291 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 6 more)] === [2022-07-12 10:28:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1838133696, now seen corresponding path program 1 times [2022-07-12 10:28:32,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:32,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986163246] [2022-07-12 10:28:32,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:32,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:33,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:33,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986163246] [2022-07-12 10:28:33,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986163246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:33,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:33,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:33,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324594638] [2022-07-12 10:28:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:33,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:33,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 234 [2022-07-12 10:28:33,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 205 transitions, 458 flow. Second operand has 10 states, 10 states have (on average 174.1) internal successors, (1741), 10 states have internal predecessors, (1741), 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) [2022-07-12 10:28:33,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:33,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 234 [2022-07-12 10:28:33,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand