./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 791161d1 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-?-791161d [2022-07-22 21:45:35,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:45:35,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:45:35,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:45:35,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:45:35,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:45:35,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:45:35,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:45:35,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:45:35,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:45:35,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:45:35,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:45:35,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:45:35,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:45:35,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:45:35,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:45:35,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:45:35,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:45:35,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:45:35,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:45:35,585 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:45:35,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:45:35,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:45:35,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:45:35,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:45:35,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:45:35,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:45:35,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:45:35,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:45:35,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:45:35,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:45:35,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:45:35,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:45:35,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:45:35,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:45:35,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:45:35,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:45:35,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:45:35,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:45:35,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:45:35,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:45:35,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:45:35,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:45:35,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:45:35,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:45:35,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:45:35,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:45:35,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:45:35,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:45:35,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:45:35,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:45:35,627 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:45:35,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:45:35,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:45:35,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:45:35,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:45:35,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:45:35,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:45:35,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:45:35,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:45:35,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:45:35,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:45:35,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:45:35,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:45:35,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:45:35,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:45:35,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:45:35,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:45:35,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:45:35,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:45:35,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:45:35,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:45:35,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:45:35,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:45:35,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:45:35,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:45:35,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f [2022-07-22 21:45:35,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:45:35,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:45:35,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:45:35,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:45:35,872 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:45:35,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-07-22 21:45:35,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f537167/289db4cab4094a3585b2fec50385f827/FLAG849edc0b4 [2022-07-22 21:45:36,341 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:45:36,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-07-22 21:45:36,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f537167/289db4cab4094a3585b2fec50385f827/FLAG849edc0b4 [2022-07-22 21:45:36,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f537167/289db4cab4094a3585b2fec50385f827 [2022-07-22 21:45:36,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:45:36,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:45:36,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:45:36,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:45:36,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:45:36,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a0e906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36, skipping insertion in model container [2022-07-22 21:45:36,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:45:36,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:45:36,579 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] [2022-07-22 21:45:36,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:45:36,591 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:45:36,623 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] [2022-07-22 21:45:36,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:45:36,638 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:45:36,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36 WrapperNode [2022-07-22 21:45:36,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:45:36,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:45:36,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:45:36,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:45:36,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,693 INFO L137 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 358 [2022-07-22 21:45:36,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:45:36,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:45:36,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:45:36,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:45:36,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:45:36,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:45:36,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:45:36,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:45:36,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (1/1) ... [2022-07-22 21:45:36,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:45:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:45:36,766 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) [2022-07-22 21:45:36,773 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 [2022-07-22 21:45:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:45:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:45:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:45:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:45:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:45:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:45:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:45:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:45:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:45:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:45:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-22 21:45:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-22 21:45:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:45:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-22 21:45:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-22 21:45:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-22 21:45:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-22 21:45:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2022-07-22 21:45:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2022-07-22 21:45:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2022-07-22 21:45:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2022-07-22 21:45:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:45:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:45:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:45:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:45:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:45:36,809 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:45:36,898 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:45:36,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:45:37,243 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:45:37,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:45:37,363 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:45:37,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:45:37 BoogieIcfgContainer [2022-07-22 21:45:37,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:45:37,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:45:37,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:45:37,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:45:37,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:45:36" (1/3) ... [2022-07-22 21:45:37,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b5492e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:45:37, skipping insertion in model container [2022-07-22 21:45:37,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:36" (2/3) ... [2022-07-22 21:45:37,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b5492e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:45:37, skipping insertion in model container [2022-07-22 21:45:37,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:45:37" (3/3) ... [2022-07-22 21:45:37,379 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2022-07-22 21:45:37,385 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:45:37,394 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:45:37,395 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:45:37,395 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:45:37,515 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-22 21:45:37,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 257 places, 234 transitions, 532 flow [2022-07-22 21:45:37,651 INFO L129 PetriNetUnfolder]: 2/226 cut-off events. [2022-07-22 21:45:37,651 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:45:37,655 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. [2022-07-22 21:45:37,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 234 transitions, 532 flow [2022-07-22 21:45:37,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 205 transitions, 458 flow [2022-07-22 21:45:37,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:45:37,689 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@1af9a163, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2898dc2c [2022-07-22 21:45:37,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-22 21:45:37,770 INFO L129 PetriNetUnfolder]: 2/204 cut-off events. [2022-07-22 21:45:37,771 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:45:37,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:45:37,772 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] [2022-07-22 21:45:37,773 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)] === [2022-07-22 21:45:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:45:37,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1838133696, now seen corresponding path program 1 times [2022-07-22 21:45:37,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:45:37,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190638956] [2022-07-22 21:45:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:45:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:45:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:45:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:45:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:45:39,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190638956] [2022-07-22 21:45:39,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190638956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:45:39,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:45:39,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:45:39,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151046308] [2022-07-22 21:45:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:45:39,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:45:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:45:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:45:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:45:39,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 234 [2022-07-22 21:45:39,169 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) [2022-07-22 21:45:39,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:45:39,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 234 [2022-07-22 21:45:39,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand