./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-6.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-6.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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:28:22,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:28:22,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:28:22,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:28:22,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:28:22,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:28:22,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:28:22,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:28:22,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:28:22,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:28:22,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:28:22,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:28:22,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:28:22,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:28:22,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:28:22,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:28:22,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:28:22,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:28:22,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:28:22,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:28:22,473 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:28:22,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:28:22,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:28:22,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:28:22,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:28:22,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:28:22,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:28:22,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:28:22,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:28:22,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:28:22,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:28:22,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:28:22,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:28:22,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:28:22,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:28:22,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:28:22,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:28:22,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:28:22,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:28:22,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:28:22,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:28:22,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:28:22,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:28:22,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:28:22,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:28:22,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:28:22,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:28:22,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:28:22,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:28:22,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:28:22,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:28:22,520 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:28:22,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:28:22,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:28:22,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:28:22,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:28:22,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:28:22,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:28:22,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:28:22,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:28:22,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:28:22,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:22,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:28:22,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:28:22,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:28:22,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:28:22,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:28:22,524 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:28:22,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:28:22,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:28:22,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-07-12 10:28:22,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:28:22,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:28:22,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:28:22,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:28:22,730 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:28:22,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-07-12 10:28:22,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eef95f7f/1775aabded794ceca4b9a23343e43ddb/FLAGf0d6df18b [2022-07-12 10:28:23,137 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:28:23,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-07-12 10:28:23,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eef95f7f/1775aabded794ceca4b9a23343e43ddb/FLAGf0d6df18b [2022-07-12 10:28:23,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eef95f7f/1775aabded794ceca4b9a23343e43ddb [2022-07-12 10:28:23,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:28:23,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:28:23,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:23,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:28:23,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:28:23,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0fccdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23, skipping insertion in model container [2022-07-12 10:28:23,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:28:23,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:28:23,330 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-6.wvr.c[4400,4413] [2022-07-12 10:28:23,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:23,337 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:28:23,355 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-6.wvr.c[4400,4413] [2022-07-12 10:28:23,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:23,364 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:28:23,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23 WrapperNode [2022-07-12 10:28:23,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:23,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:23,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:28:23,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:28:23,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,395 INFO L137 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-07-12 10:28:23,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:23,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:28:23,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:28:23,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:28:23,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:28:23,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:28:23,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:28:23,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:28:23,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:23,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:23,451 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 10:28:23,457 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 10:28:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:28:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:28:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:28:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:28:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:28:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:28:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:28:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:28:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:28:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:28:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:28:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:28:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:28:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-12 10:28:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-12 10:28:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-12 10:28:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-12 10:28:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:28:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:28:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:28:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:28:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:28:23,481 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 10:28:23,542 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:28:23,543 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:28:23,859 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:28:23,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:28:23,949 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:28:23,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:23 BoogieIcfgContainer [2022-07-12 10:28:23,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:28:23,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:28:23,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:28:23,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:28:23,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:28:23" (1/3) ... [2022-07-12 10:28:23,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e7c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:23, skipping insertion in model container [2022-07-12 10:28:23,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (2/3) ... [2022-07-12 10:28:23,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e7c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:23, skipping insertion in model container [2022-07-12 10:28:23,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:23" (3/3) ... [2022-07-12 10:28:23,957 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-07-12 10:28:23,962 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:28:23,973 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:28:23,974 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:28:23,974 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:28:24,069 INFO L135 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-07-12 10:28:24,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2022-07-12 10:28:24,160 INFO L129 PetriNetUnfolder]: 2/182 cut-off events. [2022-07-12 10:28:24,160 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:28:24,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-07-12 10:28:24,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 188 transitions, 424 flow [2022-07-12 10:28:24,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 165 transitions, 366 flow [2022-07-12 10:28:24,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:28:24,182 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@7892b486, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@256fa210 [2022-07-12 10:28:24,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:28:24,209 INFO L129 PetriNetUnfolder]: 2/164 cut-off events. [2022-07-12 10:28:24,209 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:28:24,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:24,210 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] [2022-07-12 10:28:24,210 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 4 more)] === [2022-07-12 10:28:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1163564544, now seen corresponding path program 1 times [2022-07-12 10:28:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:24,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011409172] [2022-07-12 10:28:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:24,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:24,959 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 10:28:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:24,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011409172] [2022-07-12 10:28:24,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011409172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:24,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:24,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:28:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343567673] [2022-07-12 10:28:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:24,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:28:24,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:28:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:28:24,988 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2022-07-12 10:28:24,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 165 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 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 10:28:24,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:24,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2022-07-12 10:28:24,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:47,476 INFO L129 PetriNetUnfolder]: 185942/279767 cut-off events. [2022-07-12 10:28:47,476 INFO L130 PetriNetUnfolder]: For 36645/36645 co-relation queries the response was YES. [2022-07-12 10:28:48,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 540509 conditions, 279767 events. 185942/279767 cut-off events. For 36645/36645 co-relation queries the response was YES. Maximal size of possible extension queue 9729. Compared 2525979 event pairs, 58254 based on Foata normal form. 4/276904 useless extension candidates. Maximal degree in co-relation 467504. Up to 77083 conditions per place. [2022-07-12 10:28:49,319 INFO L132 encePairwiseOnDemand]: 162/188 looper letters, 144 selfloop transitions, 31 changer transitions 27/308 dead transitions. [2022-07-12 10:28:49,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 308 transitions, 1152 flow [2022-07-12 10:28:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:28:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:28:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2256 transitions. [2022-07-12 10:28:49,334 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-12 10:28:49,335 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2256 transitions. [2022-07-12 10:28:49,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2256 transitions. [2022-07-12 10:28:49,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:49,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2256 transitions. [2022-07-12 10:28:49,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 141.0) internal successors, (2256), 16 states have internal predecessors, (2256), 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 10:28:49,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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 10:28:49,354 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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 10:28:49,355 INFO L186 Difference]: Start difference. First operand has 182 places, 165 transitions, 366 flow. Second operand 16 states and 2256 transitions. [2022-07-12 10:28:49,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 308 transitions, 1152 flow [2022-07-12 10:28:51,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 308 transitions, 1064 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-12 10:28:51,067 INFO L242 Difference]: Finished difference. Result has 195 places, 186 transitions, 552 flow [2022-07-12 10:28:51,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=552, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2022-07-12 10:28:51,071 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 13 predicate places. [2022-07-12 10:28:51,071 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 552 flow [2022-07-12 10:28:51,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 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 10:28:51,072 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:51,073 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] [2022-07-12 10:28:51,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:28:51,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:28:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash -328563082, now seen corresponding path program 2 times [2022-07-12 10:28:51,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:51,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211210304] [2022-07-12 10:28:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:51,395 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 10:28:51,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:51,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211210304] [2022-07-12 10:28:51,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211210304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:51,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:51,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054500997] [2022-07-12 10:28:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:51,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:51,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:51,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 188 [2022-07-12 10:28:51,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 138.9) internal successors, (1389), 10 states have internal predecessors, (1389), 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 10:28:51,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:51,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 188 [2022-07-12 10:28:51,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand