./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-cond-4.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 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:19:23,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:19:23,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:19:23,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:19:23,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:19:23,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:19:23,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:19:23,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:19:23,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:19:23,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:19:23,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:19:23,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:19:23,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:19:23,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:19:23,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:19:23,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:19:23,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:19:23,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:19:23,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:19:23,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:19:23,706 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:19:23,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:19:23,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:19:23,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:19:23,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:19:23,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:19:23,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:19:23,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:19:23,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:19:23,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:19:23,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:19:23,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:19:23,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:19:23,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:19:23,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:19:23,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:19:23,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:19:23,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:19:23,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:19:23,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:19:23,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:19:23,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:19:23,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:19:23,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:19:23,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:19:23,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:19:23,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:19:23,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:19:23,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:19:23,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:19:23,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:19:23,746 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:19:23,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:19:23,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:19:23,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:19:23,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:19:23,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:19:23,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:19:23,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 [2022-07-21 09:19:24,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:19:24,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:19:24,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:19:24,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:19:24,032 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:19:24,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-07-21 09:19:24,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9df12b3/edbe6df71830415985106149a6b1df16/FLAGdf7bb4997 [2022-07-21 09:19:24,434 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:19:24,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-07-21 09:19:24,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9df12b3/edbe6df71830415985106149a6b1df16/FLAGdf7bb4997 [2022-07-21 09:19:24,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9df12b3/edbe6df71830415985106149a6b1df16 [2022-07-21 09:19:24,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:19:24,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:19:24,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:19:24,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:19:24,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:19:24,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187b0a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24, skipping insertion in model container [2022-07-21 09:19:24,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:19:24,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:19:24,661 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/unroll-cond-4.wvr.c[2808,2821] [2022-07-21 09:19:24,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:19:24,685 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:19:24,706 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/unroll-cond-4.wvr.c[2808,2821] [2022-07-21 09:19:24,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:19:24,719 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:19:24,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24 WrapperNode [2022-07-21 09:19:24,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:19:24,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:19:24,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:19:24,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:19:24,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,769 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 183 [2022-07-21 09:19:24,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:19:24,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:19:24,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:19:24,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:19:24,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:19:24,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:19:24,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:19:24,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:19:24,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (1/1) ... [2022-07-21 09:19:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:19:24,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:19:24,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:19:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:19:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:19:24,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:19:24,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:19:24,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:19:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:19:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:19:24,873 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:19:24,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:19:24,933 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:19:24,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:19:25,183 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:19:25,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:19:25,191 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 09:19:25,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:19:25 BoogieIcfgContainer [2022-07-21 09:19:25,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:19:25,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:19:25,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:19:25,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:19:25,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:19:24" (1/3) ... [2022-07-21 09:19:25,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628e4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:19:25, skipping insertion in model container [2022-07-21 09:19:25,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:19:24" (2/3) ... [2022-07-21 09:19:25,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628e4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:19:25, skipping insertion in model container [2022-07-21 09:19:25,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:19:25" (3/3) ... [2022-07-21 09:19:25,200 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2022-07-21 09:19:25,212 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:19:25,218 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:19:25,218 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:19:25,218 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:19:25,289 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 09:19:25,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 494 flow [2022-07-21 09:19:25,391 INFO L129 PetriNetUnfolder]: 21/237 cut-off events. [2022-07-21 09:19:25,393 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:19:25,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 21/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 402 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-07-21 09:19:25,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 494 flow [2022-07-21 09:19:25,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 228 transitions, 468 flow [2022-07-21 09:19:25,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:19:25,414 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@3d83143e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a91ac96 [2022-07-21 09:19:25,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 09:19:25,445 INFO L129 PetriNetUnfolder]: 18/199 cut-off events. [2022-07-21 09:19:25,445 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:19:25,445 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:25,446 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] [2022-07-21 09:19:25,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1523200551, now seen corresponding path program 1 times [2022-07-21 09:19:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:25,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353145141] [2022-07-21 09:19:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:25,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:25,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353145141] [2022-07-21 09:19:25,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353145141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:25,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:25,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:19:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176430740] [2022-07-21 09:19:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:19:25,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:19:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:19:25,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 239 [2022-07-21 09:19:25,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 228 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:25,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:25,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 239 [2022-07-21 09:19:25,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:25,673 INFO L129 PetriNetUnfolder]: 6/213 cut-off events. [2022-07-21 09:19:25,673 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-21 09:19:25,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 213 events. 6/213 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 379 event pairs, 0 based on Foata normal form. 18/213 useless extension candidates. Maximal degree in co-relation 132. Up to 5 conditions per place. [2022-07-21 09:19:25,675 INFO L132 encePairwiseOnDemand]: 224/239 looper letters, 4 selfloop transitions, 0 changer transitions 4/213 dead transitions. [2022-07-21 09:19:25,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 213 transitions, 446 flow [2022-07-21 09:19:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:19:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:19:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 457 transitions. [2022-07-21 09:19:25,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9560669456066946 [2022-07-21 09:19:25,703 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 457 transitions. [2022-07-21 09:19:25,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 457 transitions. [2022-07-21 09:19:25,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:25,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 457 transitions. [2022-07-21 09:19:25,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:25,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:25,722 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:25,723 INFO L186 Difference]: Start difference. First operand has 214 places, 228 transitions, 468 flow. Second operand 2 states and 457 transitions. [2022-07-21 09:19:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 213 transitions, 446 flow [2022-07-21 09:19:25,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 438 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 09:19:25,732 INFO L242 Difference]: Finished difference. Result has 211 places, 209 transitions, 422 flow [2022-07-21 09:19:25,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=422, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2022-07-21 09:19:25,737 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -3 predicate places. [2022-07-21 09:19:25,737 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 422 flow [2022-07-21 09:19:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:25,739 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:25,739 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] [2022-07-21 09:19:25,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:19:25,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1399127304, now seen corresponding path program 1 times [2022-07-21 09:19:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:25,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868684657] [2022-07-21 09:19:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:25,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868684657] [2022-07-21 09:19:25,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868684657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:25,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:25,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:19:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444437535] [2022-07-21 09:19:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:25,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:19:25,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:19:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:19:25,976 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 239 [2022-07-21 09:19:25,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:25,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:25,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 239 [2022-07-21 09:19:25,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:26,137 INFO L129 PetriNetUnfolder]: 161/779 cut-off events. [2022-07-21 09:19:26,138 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-07-21 09:19:26,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 779 events. 161/779 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3609 event pairs, 65 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1052. Up to 216 conditions per place. [2022-07-21 09:19:26,143 INFO L132 encePairwiseOnDemand]: 234/239 looper letters, 40 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-07-21 09:19:26,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 222 transitions, 538 flow [2022-07-21 09:19:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:19:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 09:19:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 813 transitions. [2022-07-21 09:19:26,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850418410041841 [2022-07-21 09:19:26,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 813 transitions. [2022-07-21 09:19:26,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 813 transitions. [2022-07-21 09:19:26,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:26,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 813 transitions. [2022-07-21 09:19:26,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,152 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,152 INFO L186 Difference]: Start difference. First operand has 211 places, 209 transitions, 422 flow. Second operand 4 states and 813 transitions. [2022-07-21 09:19:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 222 transitions, 538 flow [2022-07-21 09:19:26,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 222 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:19:26,160 INFO L242 Difference]: Finished difference. Result has 212 places, 212 transitions, 449 flow [2022-07-21 09:19:26,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=449, PETRI_PLACES=212, PETRI_TRANSITIONS=212} [2022-07-21 09:19:26,161 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-21 09:19:26,161 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 212 transitions, 449 flow [2022-07-21 09:19:26,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,162 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:26,162 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] [2022-07-21 09:19:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:19:26,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1910315874, now seen corresponding path program 1 times [2022-07-21 09:19:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:26,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098072324] [2022-07-21 09:19:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:26,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098072324] [2022-07-21 09:19:26,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098072324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:19:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937896019] [2022-07-21 09:19:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:19:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:19:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:19:26,379 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-21 09:19:26,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 212 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:26,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-21 09:19:26,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:26,755 INFO L129 PetriNetUnfolder]: 365/1840 cut-off events. [2022-07-21 09:19:26,756 INFO L130 PetriNetUnfolder]: For 118/129 co-relation queries the response was YES. [2022-07-21 09:19:26,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 1840 events. 365/1840 cut-off events. For 118/129 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13086 event pairs, 165 based on Foata normal form. 3/1651 useless extension candidates. Maximal degree in co-relation 2650. Up to 362 conditions per place. [2022-07-21 09:19:26,765 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 94 selfloop transitions, 7 changer transitions 0/276 dead transitions. [2022-07-21 09:19:26,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 276 transitions, 829 flow [2022-07-21 09:19:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:19:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:19:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2022-07-21 09:19:26,769 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8556485355648535 [2022-07-21 09:19:26,769 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2022-07-21 09:19:26,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2022-07-21 09:19:26,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:26,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2022-07-21 09:19:26,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,775 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,775 INFO L186 Difference]: Start difference. First operand has 212 places, 212 transitions, 449 flow. Second operand 6 states and 1227 transitions. [2022-07-21 09:19:26,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 276 transitions, 829 flow [2022-07-21 09:19:26,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 276 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:19:26,782 INFO L242 Difference]: Finished difference. Result has 219 places, 216 transitions, 490 flow [2022-07-21 09:19:26,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=219, PETRI_TRANSITIONS=216} [2022-07-21 09:19:26,784 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 5 predicate places. [2022-07-21 09:19:26,784 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 216 transitions, 490 flow [2022-07-21 09:19:26,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:26,785 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] [2022-07-21 09:19:26,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:19:26,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1819236154, now seen corresponding path program 2 times [2022-07-21 09:19:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:26,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19039235] [2022-07-21 09:19:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:26,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:26,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:26,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19039235] [2022-07-21 09:19:26,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19039235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:26,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:26,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:19:26,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831130418] [2022-07-21 09:19:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:26,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:19:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:19:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:19:26,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-07-21 09:19:26,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 216 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:26,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:26,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-07-21 09:19:26,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:27,181 INFO L129 PetriNetUnfolder]: 222/1269 cut-off events. [2022-07-21 09:19:27,181 INFO L130 PetriNetUnfolder]: For 307/362 co-relation queries the response was YES. [2022-07-21 09:19:27,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 1269 events. 222/1269 cut-off events. For 307/362 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8764 event pairs, 104 based on Foata normal form. 55/1230 useless extension candidates. Maximal degree in co-relation 1908. Up to 296 conditions per place. [2022-07-21 09:19:27,186 INFO L132 encePairwiseOnDemand]: 230/239 looper letters, 54 selfloop transitions, 10 changer transitions 0/242 dead transitions. [2022-07-21 09:19:27,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 242 transitions, 705 flow [2022-07-21 09:19:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:19:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:19:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1394 transitions. [2022-07-21 09:19:27,190 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8332337118947998 [2022-07-21 09:19:27,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1394 transitions. [2022-07-21 09:19:27,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1394 transitions. [2022-07-21 09:19:27,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:27,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1394 transitions. [2022-07-21 09:19:27,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,199 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,199 INFO L186 Difference]: Start difference. First operand has 219 places, 216 transitions, 490 flow. Second operand 7 states and 1394 transitions. [2022-07-21 09:19:27,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 242 transitions, 705 flow [2022-07-21 09:19:27,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 242 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:19:27,203 INFO L242 Difference]: Finished difference. Result has 227 places, 219 transitions, 531 flow [2022-07-21 09:19:27,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=227, PETRI_TRANSITIONS=219} [2022-07-21 09:19:27,204 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 13 predicate places. [2022-07-21 09:19:27,205 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 219 transitions, 531 flow [2022-07-21 09:19:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:27,209 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] [2022-07-21 09:19:27,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:19:27,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -445000328, now seen corresponding path program 1 times [2022-07-21 09:19:27,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:27,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752017892] [2022-07-21 09:19:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:27,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:27,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:27,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752017892] [2022-07-21 09:19:27,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752017892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:27,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:27,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:19:27,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416989685] [2022-07-21 09:19:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:19:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:19:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:19:27,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-21 09:19:27,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 219 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:27,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-21 09:19:27,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:27,696 INFO L129 PetriNetUnfolder]: 498/2523 cut-off events. [2022-07-21 09:19:27,696 INFO L130 PetriNetUnfolder]: For 709/709 co-relation queries the response was YES. [2022-07-21 09:19:27,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2523 events. 498/2523 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 19587 event pairs, 212 based on Foata normal form. 11/2359 useless extension candidates. Maximal degree in co-relation 4061. Up to 532 conditions per place. [2022-07-21 09:19:27,706 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 82 selfloop transitions, 11 changer transitions 0/269 dead transitions. [2022-07-21 09:19:27,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 269 transitions, 879 flow [2022-07-21 09:19:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:19:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:19:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2022-07-21 09:19:27,709 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8416019127316199 [2022-07-21 09:19:27,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2022-07-21 09:19:27,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2022-07-21 09:19:27,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:27,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2022-07-21 09:19:27,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,715 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,715 INFO L186 Difference]: Start difference. First operand has 227 places, 219 transitions, 531 flow. Second operand 7 states and 1408 transitions. [2022-07-21 09:19:27,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 269 transitions, 879 flow [2022-07-21 09:19:27,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 269 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 09:19:27,720 INFO L242 Difference]: Finished difference. Result has 234 places, 224 transitions, 590 flow [2022-07-21 09:19:27,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=234, PETRI_TRANSITIONS=224} [2022-07-21 09:19:27,721 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-21 09:19:27,721 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 224 transitions, 590 flow [2022-07-21 09:19:27,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:27,722 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] [2022-07-21 09:19:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:19:27,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1946681628, now seen corresponding path program 2 times [2022-07-21 09:19:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:27,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902550006] [2022-07-21 09:19:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:27,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902550006] [2022-07-21 09:19:27,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902550006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:27,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:27,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:19:27,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191170515] [2022-07-21 09:19:27,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:27,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:19:27,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:19:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:19:27,833 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-21 09:19:27,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 224 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:27,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:27,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-21 09:19:27,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:28,193 INFO L129 PetriNetUnfolder]: 531/2677 cut-off events. [2022-07-21 09:19:28,194 INFO L130 PetriNetUnfolder]: For 1693/1703 co-relation queries the response was YES. [2022-07-21 09:19:28,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 2677 events. 531/2677 cut-off events. For 1693/1703 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21149 event pairs, 297 based on Foata normal form. 4/2488 useless extension candidates. Maximal degree in co-relation 4646. Up to 477 conditions per place. [2022-07-21 09:19:28,207 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 85 selfloop transitions, 15 changer transitions 0/276 dead transitions. [2022-07-21 09:19:28,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 276 transitions, 1018 flow [2022-07-21 09:19:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:19:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:19:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-07-21 09:19:28,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8610878661087866 [2022-07-21 09:19:28,210 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-07-21 09:19:28,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-07-21 09:19:28,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:28,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-07-21 09:19:28,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,214 INFO L186 Difference]: Start difference. First operand has 234 places, 224 transitions, 590 flow. Second operand 5 states and 1029 transitions. [2022-07-21 09:19:28,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 276 transitions, 1018 flow [2022-07-21 09:19:28,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 276 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:19:28,220 INFO L242 Difference]: Finished difference. Result has 239 places, 231 transitions, 710 flow [2022-07-21 09:19:28,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=239, PETRI_TRANSITIONS=231} [2022-07-21 09:19:28,221 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 25 predicate places. [2022-07-21 09:19:28,221 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 710 flow [2022-07-21 09:19:28,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:28,222 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] [2022-07-21 09:19:28,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:19:28,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash 48186288, now seen corresponding path program 3 times [2022-07-21 09:19:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:28,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144171415] [2022-07-21 09:19:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:28,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:28,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144171415] [2022-07-21 09:19:28,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144171415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:28,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:28,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:19:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771519161] [2022-07-21 09:19:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:28,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:19:28,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:19:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:19:28,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-21 09:19:28,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 231 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:28,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-21 09:19:28,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:28,674 INFO L129 PetriNetUnfolder]: 549/2783 cut-off events. [2022-07-21 09:19:28,675 INFO L130 PetriNetUnfolder]: For 2799/2808 co-relation queries the response was YES. [2022-07-21 09:19:28,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 2783 events. 549/2783 cut-off events. For 2799/2808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22323 event pairs, 303 based on Foata normal form. 12/2596 useless extension candidates. Maximal degree in co-relation 5072. Up to 485 conditions per place. [2022-07-21 09:19:28,689 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 91 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2022-07-21 09:19:28,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 283 transitions, 1113 flow [2022-07-21 09:19:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:19:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:19:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2022-07-21 09:19:28,692 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8542538354253836 [2022-07-21 09:19:28,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1225 transitions. [2022-07-21 09:19:28,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1225 transitions. [2022-07-21 09:19:28,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:28,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1225 transitions. [2022-07-21 09:19:28,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,698 INFO L186 Difference]: Start difference. First operand has 239 places, 231 transitions, 710 flow. Second operand 6 states and 1225 transitions. [2022-07-21 09:19:28,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 283 transitions, 1113 flow [2022-07-21 09:19:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 283 transitions, 1086 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-07-21 09:19:28,707 INFO L242 Difference]: Finished difference. Result has 246 places, 233 transitions, 756 flow [2022-07-21 09:19:28,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=246, PETRI_TRANSITIONS=233} [2022-07-21 09:19:28,708 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 32 predicate places. [2022-07-21 09:19:28,708 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 233 transitions, 756 flow [2022-07-21 09:19:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:28,709 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] [2022-07-21 09:19:28,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:19:28,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash 741252792, now seen corresponding path program 4 times [2022-07-21 09:19:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:28,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725973555] [2022-07-21 09:19:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:28,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:28,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725973555] [2022-07-21 09:19:28,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725973555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:28,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:28,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:19:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274887843] [2022-07-21 09:19:28,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:28,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:19:28,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:28,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:19:28,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:19:28,837 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-21 09:19:28,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 233 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:28,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:28,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-21 09:19:28,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:29,105 INFO L129 PetriNetUnfolder]: 547/2767 cut-off events. [2022-07-21 09:19:29,105 INFO L130 PetriNetUnfolder]: For 3200/3203 co-relation queries the response was YES. [2022-07-21 09:19:29,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 2767 events. 547/2767 cut-off events. For 3200/3203 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 22021 event pairs, 304 based on Foata normal form. 5/2565 useless extension candidates. Maximal degree in co-relation 5140. Up to 811 conditions per place. [2022-07-21 09:19:29,123 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 65 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2022-07-21 09:19:29,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 260 transitions, 1075 flow [2022-07-21 09:19:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:19:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:19:29,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-07-21 09:19:29,125 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8460251046025105 [2022-07-21 09:19:29,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-07-21 09:19:29,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-07-21 09:19:29,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:29,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-07-21 09:19:29,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,129 INFO L186 Difference]: Start difference. First operand has 246 places, 233 transitions, 756 flow. Second operand 5 states and 1011 transitions. [2022-07-21 09:19:29,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 260 transitions, 1075 flow [2022-07-21 09:19:29,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 260 transitions, 1045 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 09:19:29,138 INFO L242 Difference]: Finished difference. Result has 251 places, 240 transitions, 882 flow [2022-07-21 09:19:29,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=882, PETRI_PLACES=251, PETRI_TRANSITIONS=240} [2022-07-21 09:19:29,140 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 37 predicate places. [2022-07-21 09:19:29,140 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 240 transitions, 882 flow [2022-07-21 09:19:29,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:29,141 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] [2022-07-21 09:19:29,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:19:29,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1633734454, now seen corresponding path program 5 times [2022-07-21 09:19:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:29,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732145537] [2022-07-21 09:19:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:29,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:29,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732145537] [2022-07-21 09:19:29,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732145537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:29,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:19:29,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:19:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733417723] [2022-07-21 09:19:29,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:29,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:19:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:19:29,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:19:29,262 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-21 09:19:29,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 240 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:29,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-21 09:19:29,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:29,533 INFO L129 PetriNetUnfolder]: 525/2656 cut-off events. [2022-07-21 09:19:29,534 INFO L130 PetriNetUnfolder]: For 3614/3615 co-relation queries the response was YES. [2022-07-21 09:19:29,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 2656 events. 525/2656 cut-off events. For 3614/3615 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20992 event pairs, 272 based on Foata normal form. 12/2476 useless extension candidates. Maximal degree in co-relation 4977. Up to 738 conditions per place. [2022-07-21 09:19:29,548 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 74 selfloop transitions, 20 changer transitions 0/270 dead transitions. [2022-07-21 09:19:29,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 270 transitions, 1171 flow [2022-07-21 09:19:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:19:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:19:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2022-07-21 09:19:29,551 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444909344490934 [2022-07-21 09:19:29,551 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2022-07-21 09:19:29,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2022-07-21 09:19:29,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:29,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2022-07-21 09:19:29,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,557 INFO L186 Difference]: Start difference. First operand has 251 places, 240 transitions, 882 flow. Second operand 6 states and 1211 transitions. [2022-07-21 09:19:29,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 270 transitions, 1171 flow [2022-07-21 09:19:29,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 270 transitions, 1130 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-21 09:19:29,567 INFO L242 Difference]: Finished difference. Result has 258 places, 242 transitions, 930 flow [2022-07-21 09:19:29,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=930, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2022-07-21 09:19:29,568 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 44 predicate places. [2022-07-21 09:19:29,568 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 930 flow [2022-07-21 09:19:29,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,569 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:29,569 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] [2022-07-21 09:19:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:19:29,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash 336008823, now seen corresponding path program 1 times [2022-07-21 09:19:29,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:29,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057201291] [2022-07-21 09:19:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:29,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:29,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057201291] [2022-07-21 09:19:29,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057201291] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:19:29,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746480947] [2022-07-21 09:19:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:29,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:19:29,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:19:29,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:19:29,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:19:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:29,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:19:29,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:19:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:19:29,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:19:29,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746480947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:29,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:19:29,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-21 09:19:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681566889] [2022-07-21 09:19:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:19:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:19:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:19:29,950 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 239 [2022-07-21 09:19:29,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 930 flow. Second operand has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:29,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:29,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 239 [2022-07-21 09:19:29,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:30,286 INFO L129 PetriNetUnfolder]: 369/1908 cut-off events. [2022-07-21 09:19:30,286 INFO L130 PetriNetUnfolder]: For 1440/1451 co-relation queries the response was YES. [2022-07-21 09:19:30,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 1908 events. 369/1908 cut-off events. For 1440/1451 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15106 event pairs, 207 based on Foata normal form. 1/1779 useless extension candidates. Maximal degree in co-relation 3334. Up to 531 conditions per place. [2022-07-21 09:19:30,298 INFO L132 encePairwiseOnDemand]: 219/239 looper letters, 47 selfloop transitions, 13 changer transitions 18/265 dead transitions. [2022-07-21 09:19:30,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 265 transitions, 1138 flow [2022-07-21 09:19:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:19:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:19:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1760 transitions. [2022-07-21 09:19:30,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7364016736401674 [2022-07-21 09:19:30,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1760 transitions. [2022-07-21 09:19:30,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1760 transitions. [2022-07-21 09:19:30,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:30,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1760 transitions. [2022-07-21 09:19:30,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:30,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:30,310 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:30,310 INFO L186 Difference]: Start difference. First operand has 258 places, 242 transitions, 930 flow. Second operand 10 states and 1760 transitions. [2022-07-21 09:19:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 265 transitions, 1138 flow [2022-07-21 09:19:30,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 265 transitions, 1093 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-21 09:19:30,319 INFO L242 Difference]: Finished difference. Result has 269 places, 243 transitions, 931 flow [2022-07-21 09:19:30,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=931, PETRI_PLACES=269, PETRI_TRANSITIONS=243} [2022-07-21 09:19:30,321 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 55 predicate places. [2022-07-21 09:19:30,321 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 931 flow [2022-07-21 09:19:30,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:30,321 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:30,322 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] [2022-07-21 09:19:30,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:19:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:19:30,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash 406619300, now seen corresponding path program 1 times [2022-07-21 09:19:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:30,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355277916] [2022-07-21 09:19:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:30,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:19:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:30,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355277916] [2022-07-21 09:19:30,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355277916] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:19:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390650006] [2022-07-21 09:19:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:30,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:19:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:19:30,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:19:30,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:19:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 09:19:30,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:19:31,237 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-21 09:19:31,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-07-21 09:19:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:31,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:19:31,666 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-21 09:19:31,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-21 09:19:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:32,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390650006] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:19:32,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:19:32,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2022-07-21 09:19:32,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172531198] [2022-07-21 09:19:32,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:19:32,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 09:19:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 09:19:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 09:19:32,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 239 [2022-07-21 09:19:32,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 243 transitions, 931 flow. Second operand has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:32,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:32,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 239 [2022-07-21 09:19:32,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:47,169 INFO L129 PetriNetUnfolder]: 26272/55706 cut-off events. [2022-07-21 09:19:47,169 INFO L130 PetriNetUnfolder]: For 48678/48708 co-relation queries the response was YES. [2022-07-21 09:19:47,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122993 conditions, 55706 events. 26272/55706 cut-off events. For 48678/48708 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 576297 event pairs, 1094 based on Foata normal form. 80/54569 useless extension candidates. Maximal degree in co-relation 122960. Up to 8491 conditions per place. [2022-07-21 09:19:47,579 INFO L132 encePairwiseOnDemand]: 163/239 looper letters, 1981 selfloop transitions, 514 changer transitions 398/2975 dead transitions. [2022-07-21 09:19:47,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 2975 transitions, 16572 flow [2022-07-21 09:19:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-07-21 09:19:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2022-07-21 09:19:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 17241 transitions. [2022-07-21 09:19:47,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.45086297071129705 [2022-07-21 09:19:47,603 INFO L72 ComplementDD]: Start complementDD. Operand 160 states and 17241 transitions. [2022-07-21 09:19:47,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 17241 transitions. [2022-07-21 09:19:47,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:47,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 160 states and 17241 transitions. [2022-07-21 09:19:47,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 161 states, 160 states have (on average 107.75625) internal successors, (17241), 160 states have internal predecessors, (17241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:47,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 161 states, 161 states have (on average 239.0) internal successors, (38479), 161 states have internal predecessors, (38479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:47,692 INFO L81 ComplementDD]: Finished complementDD. Result has 161 states, 161 states have (on average 239.0) internal successors, (38479), 161 states have internal predecessors, (38479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:47,692 INFO L186 Difference]: Start difference. First operand has 269 places, 243 transitions, 931 flow. Second operand 160 states and 17241 transitions. [2022-07-21 09:19:47,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 2975 transitions, 16572 flow [2022-07-21 09:19:48,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 2975 transitions, 15768 flow, removed 292 selfloop flow, removed 7 redundant places. [2022-07-21 09:19:48,205 INFO L242 Difference]: Finished difference. Result has 527 places, 783 transitions, 5883 flow [2022-07-21 09:19:48,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=160, PETRI_FLOW=5883, PETRI_PLACES=527, PETRI_TRANSITIONS=783} [2022-07-21 09:19:48,206 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 313 predicate places. [2022-07-21 09:19:48,206 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 783 transitions, 5883 flow [2022-07-21 09:19:48,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:48,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:48,208 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] [2022-07-21 09:19:48,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:19:48,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:19:48,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash -617316126, now seen corresponding path program 2 times [2022-07-21 09:19:48,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:48,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171088622] [2022-07-21 09:19:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:48,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:19:48,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:48,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171088622] [2022-07-21 09:19:48,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171088622] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:19:48,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716843678] [2022-07-21 09:19:48,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:19:48,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:19:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:19:48,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:19:48,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:19:48,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 09:19:48,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:19:48,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 09:19:48,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:19:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:19:48,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:19:48,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716843678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:19:48,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:19:48,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-21 09:19:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861060280] [2022-07-21 09:19:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:19:48,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:19:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:19:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:19:48,899 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-07-21 09:19:48,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 783 transitions, 5883 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:48,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:48,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-07-21 09:19:48,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:19:52,743 INFO L129 PetriNetUnfolder]: 4078/16535 cut-off events. [2022-07-21 09:19:52,743 INFO L130 PetriNetUnfolder]: For 175001/176261 co-relation queries the response was YES. [2022-07-21 09:19:52,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68426 conditions, 16535 events. 4078/16535 cut-off events. For 175001/176261 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 188245 event pairs, 1363 based on Foata normal form. 292/16094 useless extension candidates. Maximal degree in co-relation 68287. Up to 2391 conditions per place. [2022-07-21 09:19:52,999 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 106 selfloop transitions, 64 changer transitions 0/839 dead transitions. [2022-07-21 09:19:52,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 839 transitions, 6693 flow [2022-07-21 09:19:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:19:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:19:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1788 transitions. [2022-07-21 09:19:53,003 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8312412831241283 [2022-07-21 09:19:53,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1788 transitions. [2022-07-21 09:19:53,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1788 transitions. [2022-07-21 09:19:53,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:19:53,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1788 transitions. [2022-07-21 09:19:53,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:53,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:53,007 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:53,008 INFO L186 Difference]: Start difference. First operand has 527 places, 783 transitions, 5883 flow. Second operand 9 states and 1788 transitions. [2022-07-21 09:19:53,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 839 transitions, 6693 flow [2022-07-21 09:19:53,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 839 transitions, 6303 flow, removed 136 selfloop flow, removed 21 redundant places. [2022-07-21 09:19:53,771 INFO L242 Difference]: Finished difference. Result has 468 places, 787 transitions, 5744 flow [2022-07-21 09:19:53,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5744, PETRI_PLACES=468, PETRI_TRANSITIONS=787} [2022-07-21 09:19:53,772 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 254 predicate places. [2022-07-21 09:19:53,772 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 787 transitions, 5744 flow [2022-07-21 09:19:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:53,773 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:19:53,773 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] [2022-07-21 09:19:53,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:19:53,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:19:53,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:19:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:19:53,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1590752966, now seen corresponding path program 1 times [2022-07-21 09:19:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:19:53,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093773635] [2022-07-21 09:19:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:53,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:19:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:19:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:19:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093773635] [2022-07-21 09:19:54,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093773635] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:19:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257817698] [2022-07-21 09:19:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:19:54,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:19:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:19:54,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:19:54,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:19:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:19:54,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-21 09:19:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:19:55,220 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-21 09:19:55,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2022-07-21 09:19:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:55,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:19:55,850 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:19:55,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2022-07-21 09:19:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:19:56,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257817698] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:19:56,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:19:56,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 22] total 49 [2022-07-21 09:19:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240061634] [2022-07-21 09:19:56,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:19:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-21 09:19:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:19:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-21 09:19:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2172, Unknown=0, NotChecked=0, Total=2352 [2022-07-21 09:19:56,846 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 239 [2022-07-21 09:19:56,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 787 transitions, 5744 flow. Second operand has 49 states, 49 states have (on average 93.18367346938776) internal successors, (4566), 49 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:19:56,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:19:56,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 239 [2022-07-21 09:19:56,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:17,900 INFO L129 PetriNetUnfolder]: 21383/47488 cut-off events. [2022-07-21 09:20:17,900 INFO L130 PetriNetUnfolder]: For 552627/552904 co-relation queries the response was YES. [2022-07-21 09:20:18,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230753 conditions, 47488 events. 21383/47488 cut-off events. For 552627/552904 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 497744 event pairs, 2601 based on Foata normal form. 155/46798 useless extension candidates. Maximal degree in co-relation 230625. Up to 18109 conditions per place. [2022-07-21 09:20:19,012 INFO L132 encePairwiseOnDemand]: 172/239 looper letters, 1528 selfloop transitions, 481 changer transitions 4/2118 dead transitions. [2022-07-21 09:20:19,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 2118 transitions, 21010 flow [2022-07-21 09:20:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-21 09:20:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2022-07-21 09:20:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 11866 transitions. [2022-07-21 09:20:19,024 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.41373779637377966 [2022-07-21 09:20:19,024 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 11866 transitions. [2022-07-21 09:20:19,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 11866 transitions. [2022-07-21 09:20:19,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:19,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 11866 transitions. [2022-07-21 09:20:19,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 98.88333333333334) internal successors, (11866), 120 states have internal predecessors, (11866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:19,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 239.0) internal successors, (28919), 121 states have internal predecessors, (28919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:19,067 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 239.0) internal successors, (28919), 121 states have internal predecessors, (28919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:19,068 INFO L186 Difference]: Start difference. First operand has 468 places, 787 transitions, 5744 flow. Second operand 120 states and 11866 transitions. [2022-07-21 09:20:19,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 2118 transitions, 21010 flow [2022-07-21 09:20:22,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 2118 transitions, 20873 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 09:20:22,102 INFO L242 Difference]: Finished difference. Result has 672 places, 1089 transitions, 10025 flow [2022-07-21 09:20:22,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5643, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=10025, PETRI_PLACES=672, PETRI_TRANSITIONS=1089} [2022-07-21 09:20:22,103 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 458 predicate places. [2022-07-21 09:20:22,103 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 1089 transitions, 10025 flow [2022-07-21 09:20:22,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 93.18367346938776) internal successors, (4566), 49 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:22,104 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:22,104 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] [2022-07-21 09:20:22,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:22,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1785264432, now seen corresponding path program 1 times [2022-07-21 09:20:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:22,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669175765] [2022-07-21 09:20:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:20:22,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:22,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669175765] [2022-07-21 09:20:22,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669175765] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:22,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655087099] [2022-07-21 09:20:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:22,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:22,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:20:22,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:20:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:22,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-21 09:20:22,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:23,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:20:23,144 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:20:23,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-07-21 09:20:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:23,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:20:23,488 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-21 09:20:23,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-21 09:20:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:24,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655087099] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:20:24,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:20:24,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2022-07-21 09:20:24,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111702262] [2022-07-21 09:20:24,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:20:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-21 09:20:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-21 09:20:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-07-21 09:20:24,031 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 239 [2022-07-21 09:20:24,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 1089 transitions, 10025 flow. Second operand has 41 states, 41 states have (on average 90.09756097560975) internal successors, (3694), 41 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:24,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:24,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 239 [2022-07-21 09:20:24,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand