./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-simple-equiv.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-simple-equiv.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 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:44:54,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:44:54,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:44:54,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:44:54,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:44:54,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:44:54,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:44:54,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:44:54,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:44:54,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:44:54,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:44:54,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:44:54,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:44:54,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:44:54,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:44:54,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:44:54,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:44:54,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:44:54,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:44:54,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:44:54,438 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:44:54,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:44:54,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:44:54,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:44:54,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:44:54,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:44:54,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:44:54,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:44:54,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:44:54,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:44:54,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:44:54,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:44:54,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:44:54,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:44:54,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:44:54,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:44:54,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:44:54,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:44:54,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:44:54,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:44:54,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:44:54,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:44:54,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:44:54,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:44:54,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:44:54,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:44:54,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:44:54,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:44:54,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:44:54,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:44:54,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:44:54,474 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:44:54,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:44:54,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:44:54,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:44:54,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:44:54,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:44:54,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:44:54,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:44:54,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:44:54,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:44:54,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:44:54,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:44:54,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:44:54,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:44:54,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:44:54,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:44:54,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:44:54,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:44:54,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:44:54,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:44:54,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:44:54,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:44:54,478 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:44:54,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:44:54,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:44:54,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2022-07-22 21:44:54,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:44:54,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:44:54,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:44:54,683 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:44:54,684 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:44:54,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2022-07-22 21:44:54,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d666b81/5bcd0eefe19d46118f563a7c9fd493fe/FLAGfa4f510a3 [2022-07-22 21:44:55,074 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:44:55,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2022-07-22 21:44:55,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d666b81/5bcd0eefe19d46118f563a7c9fd493fe/FLAGfa4f510a3 [2022-07-22 21:44:55,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d666b81/5bcd0eefe19d46118f563a7c9fd493fe [2022-07-22 21:44:55,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:44:55,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:44:55,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:44:55,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:44:55,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:44:55,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c60cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55, skipping insertion in model container [2022-07-22 21:44:55,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:44:55,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:44:55,703 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-simple-equiv.wvr.c[2212,2225] [2022-07-22 21:44:55,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:44:55,713 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:44:55,738 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-simple-equiv.wvr.c[2212,2225] [2022-07-22 21:44:55,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:44:55,757 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:44:55,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55 WrapperNode [2022-07-22 21:44:55,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:44:55,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:44:55,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:44:55,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:44:55,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,789 INFO L137 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-22 21:44:55,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:44:55,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:44:55,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:44:55,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:44:55,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:44:55,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:44:55,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:44:55,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:44:55,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (1/1) ... [2022-07-22 21:44:55,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:44:55,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:55,853 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 21:44:55,860 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 21:44:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:44:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:44:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:44:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:44:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:44:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:44:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:44:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:44:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:44:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:44:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:44:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:44:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:44:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:44:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:44:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:44:55,916 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 21:44:55,969 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:44:55,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:44:56,092 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:44:56,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:44:56,107 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:44:56,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:44:56 BoogieIcfgContainer [2022-07-22 21:44:56,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:44:56,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:44:56,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:44:56,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:44:56,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:44:55" (1/3) ... [2022-07-22 21:44:56,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743fd99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:44:56, skipping insertion in model container [2022-07-22 21:44:56,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:55" (2/3) ... [2022-07-22 21:44:56,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743fd99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:44:56, skipping insertion in model container [2022-07-22 21:44:56,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:44:56" (3/3) ... [2022-07-22 21:44:56,114 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2022-07-22 21:44:56,118 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:44:56,137 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:44:56,137 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:44:56,137 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:44:56,170 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:44:56,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 212 flow [2022-07-22 21:44:56,250 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2022-07-22 21:44:56,250 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:44:56,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 2/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-07-22 21:44:56,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 212 flow [2022-07-22 21:44:56,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 178 flow [2022-07-22 21:44:56,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:44:56,268 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@1eae884b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@da39f93 [2022-07-22 21:44:56,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:44:56,289 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2022-07-22 21:44:56,289 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:44:56,289 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:56,290 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] [2022-07-22 21:44:56,290 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 1 more)] === [2022-07-22 21:44:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561410, now seen corresponding path program 1 times [2022-07-22 21:44:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:56,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034390123] [2022-07-22 21:44:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:56,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:57,030 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 21:44:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:57,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034390123] [2022-07-22 21:44:57,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034390123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:57,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:57,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:44:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263570940] [2022-07-22 21:44:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:57,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:44:57,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:44:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:44:57,064 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-22 21:44:57,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:57,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:57,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-22 21:44:57,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:57,608 INFO L129 PetriNetUnfolder]: 47/220 cut-off events. [2022-07-22 21:44:57,608 INFO L130 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-07-22 21:44:57,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 220 events. 47/220 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 737 event pairs, 21 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 250. Up to 85 conditions per place. [2022-07-22 21:44:57,611 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 27 selfloop transitions, 15 changer transitions 13/105 dead transitions. [2022-07-22 21:44:57,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 359 flow [2022-07-22 21:44:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:44:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:44:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2022-07-22 21:44:57,624 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7184942716857611 [2022-07-22 21:44:57,624 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 878 transitions. [2022-07-22 21:44:57,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 878 transitions. [2022-07-22 21:44:57,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:57,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 878 transitions. [2022-07-22 21:44:57,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.53846153846153) internal successors, (878), 13 states have internal predecessors, (878), 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 21:44:57,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:57,638 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:57,640 INFO L186 Difference]: Start difference. First operand has 88 places, 80 transitions, 178 flow. Second operand 13 states and 878 transitions. [2022-07-22 21:44:57,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 359 flow [2022-07-22 21:44:57,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 333 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:44:57,645 INFO L242 Difference]: Finished difference. Result has 99 places, 88 transitions, 249 flow [2022-07-22 21:44:57,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=249, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2022-07-22 21:44:57,658 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2022-07-22 21:44:57,658 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 249 flow [2022-07-22 21:44:57,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:57,659 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:57,659 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] [2022-07-22 21:44:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:44:57,660 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 1 more)] === [2022-07-22 21:44:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash 653009678, now seen corresponding path program 2 times [2022-07-22 21:44:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338740246] [2022-07-22 21:44:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:57,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:57,874 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 21:44:57,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:57,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338740246] [2022-07-22 21:44:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338740246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:57,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:57,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:44:57,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210967704] [2022-07-22 21:44:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:57,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:44:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:44:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:44:57,878 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-22 21:44:57,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:57,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:57,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-22 21:44:57,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:58,232 INFO L129 PetriNetUnfolder]: 61/271 cut-off events. [2022-07-22 21:44:58,232 INFO L130 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2022-07-22 21:44:58,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 271 events. 61/271 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1057 event pairs, 0 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 560. Up to 71 conditions per place. [2022-07-22 21:44:58,234 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 41 selfloop transitions, 19 changer transitions 19/129 dead transitions. [2022-07-22 21:44:58,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 562 flow [2022-07-22 21:44:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:44:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:44:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2022-07-22 21:44:58,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7242225859247136 [2022-07-22 21:44:58,237 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2022-07-22 21:44:58,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2022-07-22 21:44:58,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:58,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2022-07-22 21:44:58,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 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 21:44:58,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:58,242 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:58,242 INFO L186 Difference]: Start difference. First operand has 99 places, 88 transitions, 249 flow. Second operand 13 states and 885 transitions. [2022-07-22 21:44:58,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 562 flow [2022-07-22 21:44:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 548 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-22 21:44:58,246 INFO L242 Difference]: Finished difference. Result has 105 places, 101 transitions, 373 flow [2022-07-22 21:44:58,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2022-07-22 21:44:58,247 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2022-07-22 21:44:58,247 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 373 flow [2022-07-22 21:44:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:58,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:58,248 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] [2022-07-22 21:44:58,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:44:58,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:44:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1277421210, now seen corresponding path program 3 times [2022-07-22 21:44:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:58,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46124525] [2022-07-22 21:44:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:58,454 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 21:44:58,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46124525] [2022-07-22 21:44:58,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46124525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:58,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:58,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:44:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284027448] [2022-07-22 21:44:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:44:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:44:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:44:58,458 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-22 21:44:58,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:58,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:58,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-22 21:44:58,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:58,825 INFO L129 PetriNetUnfolder]: 53/280 cut-off events. [2022-07-22 21:44:58,825 INFO L130 PetriNetUnfolder]: For 220/228 co-relation queries the response was YES. [2022-07-22 21:44:58,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 280 events. 53/280 cut-off events. For 220/228 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1186 event pairs, 7 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 670. Up to 49 conditions per place. [2022-07-22 21:44:58,828 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 24 selfloop transitions, 15 changer transitions 41/130 dead transitions. [2022-07-22 21:44:58,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 672 flow [2022-07-22 21:44:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:44:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:44:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 883 transitions. [2022-07-22 21:44:58,831 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7225859247135843 [2022-07-22 21:44:58,831 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 883 transitions. [2022-07-22 21:44:58,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 883 transitions. [2022-07-22 21:44:58,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:58,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 883 transitions. [2022-07-22 21:44:58,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.92307692307692) internal successors, (883), 13 states have internal predecessors, (883), 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 21:44:58,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:58,835 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:58,836 INFO L186 Difference]: Start difference. First operand has 105 places, 101 transitions, 373 flow. Second operand 13 states and 883 transitions. [2022-07-22 21:44:58,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 672 flow [2022-07-22 21:44:58,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 619 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-07-22 21:44:58,844 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 302 flow [2022-07-22 21:44:58,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2022-07-22 21:44:58,846 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2022-07-22 21:44:58,846 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 302 flow [2022-07-22 21:44:58,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:58,847 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:58,847 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] [2022-07-22 21:44:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:44:58,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:44:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2093518344, now seen corresponding path program 4 times [2022-07-22 21:44:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:58,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668556707] [2022-07-22 21:44:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:58,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:59,127 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 21:44:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668556707] [2022-07-22 21:44:59,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668556707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:59,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:59,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:44:59,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43895434] [2022-07-22 21:44:59,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:59,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:44:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:44:59,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:44:59,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-22 21:44:59,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:59,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:59,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-22 21:44:59,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:59,362 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2022-07-22 21:44:59,362 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-07-22 21:44:59,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 12/139 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 2 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 305. Up to 26 conditions per place. [2022-07-22 21:44:59,365 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 22 selfloop transitions, 6 changer transitions 19/97 dead transitions. [2022-07-22 21:44:59,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 433 flow [2022-07-22 21:44:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:44:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:44:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 865 transitions. [2022-07-22 21:44:59,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7078559738134206 [2022-07-22 21:44:59,367 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 865 transitions. [2022-07-22 21:44:59,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 865 transitions. [2022-07-22 21:44:59,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:59,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 865 transitions. [2022-07-22 21:44:59,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.53846153846153) internal successors, (865), 13 states have internal predecessors, (865), 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 21:44:59,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:59,370 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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 21:44:59,370 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 302 flow. Second operand 13 states and 865 transitions. [2022-07-22 21:44:59,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 433 flow [2022-07-22 21:44:59,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 368 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-07-22 21:44:59,375 INFO L242 Difference]: Finished difference. Result has 107 places, 78 transitions, 221 flow [2022-07-22 21:44:59,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2022-07-22 21:44:59,379 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2022-07-22 21:44:59,380 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 221 flow [2022-07-22 21:44:59,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:59,380 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:59,381 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] [2022-07-22 21:44:59,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:44:59,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:44:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash 557027142, now seen corresponding path program 5 times [2022-07-22 21:44:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881179555] [2022-07-22 21:44:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:59,607 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 21:44:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881179555] [2022-07-22 21:44:59,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881179555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:59,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:59,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:44:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988686008] [2022-07-22 21:44:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:59,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:44:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:44:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:44:59,609 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-22 21:44:59,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:59,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:59,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-22 21:44:59,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:59,836 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2022-07-22 21:44:59,837 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-22 21:44:59,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 89 events. 4/89 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 160. Up to 7 conditions per place. [2022-07-22 21:44:59,837 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-07-22 21:44:59,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 78 transitions, 282 flow [2022-07-22 21:44:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:44:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:44:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2022-07-22 21:44:59,838 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2022-07-22 21:44:59,839 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2022-07-22 21:44:59,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2022-07-22 21:44:59,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:59,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2022-07-22 21:44:59,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 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 21:44:59,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 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 21:44:59,841 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 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 21:44:59,842 INFO L186 Difference]: Start difference. First operand has 107 places, 78 transitions, 221 flow. Second operand 12 states and 787 transitions. [2022-07-22 21:44:59,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 78 transitions, 282 flow [2022-07-22 21:44:59,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 247 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-07-22 21:44:59,843 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-22 21:44:59,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-07-22 21:44:59,844 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2022-07-22 21:44:59,844 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-22 21:44:59,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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 21:44:59,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-22 21:44:59,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-22 21:44:59,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:44:59,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-22 21:44:59,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:44:59,847 INFO L356 BasicCegarLoop]: Path program histogram: [5] [2022-07-22 21:44:59,849 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:44:59,849 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:44:59,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:44:59 BasicIcfg [2022-07-22 21:44:59,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:44:59,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:44:59,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:44:59,853 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:44:59,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:44:56" (3/4) ... [2022-07-22 21:44:59,855 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:44:59,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-22 21:44:59,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-22 21:44:59,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-22 21:44:59,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-22 21:44:59,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:44:59,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:44:59,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:44:59,881 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:44:59,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:44:59,882 INFO L158 Benchmark]: Toolchain (without parser) took 4361.36ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 56.1MB in the beginning and 64.2MB in the end (delta: -8.1MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,882 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 72.5MB in the beginning and 72.5MB in the end (delta: 69.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:44:59,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.38ms. Allocated memory is still 92.3MB. Free memory was 55.8MB in the beginning and 68.2MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.67ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 66.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,883 INFO L158 Benchmark]: Boogie Preprocessor took 35.84ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 65.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,883 INFO L158 Benchmark]: RCFGBuilder took 281.96ms. Allocated memory is still 92.3MB. Free memory was 65.4MB in the beginning and 53.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,883 INFO L158 Benchmark]: TraceAbstraction took 3742.88ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 52.5MB in the beginning and 67.3MB in the end (delta: -14.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,884 INFO L158 Benchmark]: Witness Printer took 28.38ms. Allocated memory is still 134.2MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 21:44:59,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 72.5MB in the beginning and 72.5MB in the end (delta: 69.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.38ms. Allocated memory is still 92.3MB. Free memory was 55.8MB in the beginning and 68.2MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.67ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 66.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.84ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 65.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.96ms. Allocated memory is still 92.3MB. Free memory was 65.4MB in the beginning and 53.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3742.88ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 52.5MB in the beginning and 67.3MB in the end (delta: -14.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 28.38ms. Allocated memory is still 134.2MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 267 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 582 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1296 IncrementalHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 61 mSDtfsCounter, 1296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=2, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 6489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:44:59,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE