./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:42:27,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:42:27,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:42:27,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:42:27,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:42:27,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:42:27,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:42:27,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:42:27,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:42:27,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:42:27,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:42:27,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:42:27,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:42:27,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:42:27,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:42:27,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:42:27,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:42:27,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:42:27,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:42:27,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:42:27,650 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:42:27,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:42:27,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:42:27,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:42:27,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:42:27,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:42:27,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:42:27,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:42:27,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:42:27,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:42:27,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:42:27,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:42:27,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:42:27,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:42:27,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:42:27,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:42:27,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:42:27,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:42:27,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:42:27,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:42:27,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:42:27,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:42:27,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:42:27,694 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:42:27,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:42:27,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:42:27,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:42:27,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:42:27,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:42:27,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:42:27,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:42:27,696 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:42:27,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:42:27,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:42:27,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:42:27,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:42:27,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:42:27,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:42:27,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:42:27,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:42:27,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:42:27,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:42:27,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:42:27,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:42:27,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:42:27,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:42:27,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:42:27,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:42:27,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:42:27,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:42:27,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:42:27,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:42:27,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:42:27,700 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:42:27,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:42:27,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:42:27,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-07-12 10:42:27,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:42:27,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:42:27,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:42:27,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:42:27,895 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:42:27,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-07-12 10:42:27,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2751887eb/fc7d3dbe43ab4755901e1cd8167e2cee/FLAG29947cc4f [2022-07-12 10:42:28,295 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:42:28,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-07-12 10:42:28,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2751887eb/fc7d3dbe43ab4755901e1cd8167e2cee/FLAG29947cc4f [2022-07-12 10:42:28,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2751887eb/fc7d3dbe43ab4755901e1cd8167e2cee [2022-07-12 10:42:28,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:42:28,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:42:28,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:42:28,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:42:28,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:42:28,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f56aa45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28, skipping insertion in model container [2022-07-12 10:42:28,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:42:28,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:42:28,882 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-4.wvr.c[2572,2585] [2022-07-12 10:42:28,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:42:28,892 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:42:28,906 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-4.wvr.c[2572,2585] [2022-07-12 10:42:28,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:42:28,917 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:42:28,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28 WrapperNode [2022-07-12 10:42:28,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:42:28,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:42:28,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:42:28,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:42:28,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,944 INFO L137 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2022-07-12 10:42:28,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:42:28,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:42:28,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:42:28,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:42:28,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:42:28,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:42:28,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:42:28,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:42:28,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (1/1) ... [2022-07-12 10:42:28,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:42:28,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:42:28,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:42:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:42:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:42:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:42:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:42:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:42:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:42:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:42:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:42:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:42:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:42:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:42:29,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:42:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:42:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:42:29,024 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:42:29,131 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:42:29,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:42:29,404 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:42:29,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:42:29,412 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 10:42:29,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:42:29 BoogieIcfgContainer [2022-07-12 10:42:29,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:42:29,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:42:29,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:42:29,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:42:29,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:42:28" (1/3) ... [2022-07-12 10:42:29,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357192a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:42:29, skipping insertion in model container [2022-07-12 10:42:29,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:42:28" (2/3) ... [2022-07-12 10:42:29,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357192a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:42:29, skipping insertion in model container [2022-07-12 10:42:29,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:42:29" (3/3) ... [2022-07-12 10:42:29,420 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-07-12 10:42:29,424 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:42:29,430 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:42:29,430 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:42:29,431 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:42:29,484 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:42:29,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 199 transitions, 414 flow [2022-07-12 10:42:29,581 INFO L129 PetriNetUnfolder]: 16/197 cut-off events. [2022-07-12 10:42:29,583 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:42:29,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 16/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 171 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-07-12 10:42:29,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 199 transitions, 414 flow [2022-07-12 10:42:29,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 188 transitions, 388 flow [2022-07-12 10:42:29,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:42:29,616 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@39af9ffe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64cf19f7 [2022-07-12 10:42:29,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:42:29,635 INFO L129 PetriNetUnfolder]: 13/155 cut-off events. [2022-07-12 10:42:29,639 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:42:29,640 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:29,640 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] [2022-07-12 10:42:29,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash -973515238, now seen corresponding path program 1 times [2022-07-12 10:42:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:29,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923651178] [2022-07-12 10:42:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:42:29,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:29,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923651178] [2022-07-12 10:42:29,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923651178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:42:29,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:42:29,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:42:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273876742] [2022-07-12 10:42:29,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:42:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:42:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:42:29,889 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 199 [2022-07-12 10:42:29,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 188 transitions, 388 flow. Second operand has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:29,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:29,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 199 [2022-07-12 10:42:29,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:29,950 INFO L129 PetriNetUnfolder]: 3/175 cut-off events. [2022-07-12 10:42:29,950 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-12 10:42:29,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 175 events. 3/175 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 16/178 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2022-07-12 10:42:29,953 INFO L132 encePairwiseOnDemand]: 186/199 looper letters, 4 selfloop transitions, 0 changer transitions 5/175 dead transitions. [2022-07-12 10:42:29,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 370 flow [2022-07-12 10:42:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:42:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:42:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 379 transitions. [2022-07-12 10:42:29,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9522613065326633 [2022-07-12 10:42:29,968 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 379 transitions. [2022-07-12 10:42:29,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 379 transitions. [2022-07-12 10:42:29,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:29,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 379 transitions. [2022-07-12 10:42:29,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.5) internal successors, (379), 2 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:29,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:29,990 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:29,991 INFO L186 Difference]: Start difference. First operand has 179 places, 188 transitions, 388 flow. Second operand 2 states and 379 transitions. [2022-07-12 10:42:29,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 370 flow [2022-07-12 10:42:29,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:42:30,001 INFO L242 Difference]: Finished difference. Result has 176 places, 170 transitions, 344 flow [2022-07-12 10:42:30,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=344, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2022-07-12 10:42:30,005 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, -3 predicate places. [2022-07-12 10:42:30,006 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 344 flow [2022-07-12 10:42:30,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:30,007 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] [2022-07-12 10:42:30,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:42:30,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -366624895, now seen corresponding path program 1 times [2022-07-12 10:42:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:30,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521064620] [2022-07-12 10:42:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:30,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:42:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:30,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521064620] [2022-07-12 10:42:30,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521064620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:42:30,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:42:30,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:42:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341343280] [2022-07-12 10:42:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:30,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:42:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:42:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:42:30,224 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2022-07-12 10:42:30,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:30,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2022-07-12 10:42:30,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:30,316 INFO L129 PetriNetUnfolder]: 22/292 cut-off events. [2022-07-12 10:42:30,316 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-12 10:42:30,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 292 events. 22/292 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 638 event pairs, 9 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 368. Up to 61 conditions per place. [2022-07-12 10:42:30,319 INFO L132 encePairwiseOnDemand]: 191/199 looper letters, 38 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2022-07-12 10:42:30,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 442 flow [2022-07-12 10:42:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:42:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:42:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2022-07-12 10:42:30,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7273869346733668 [2022-07-12 10:42:30,322 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2022-07-12 10:42:30,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2022-07-12 10:42:30,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:30,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2022-07-12 10:42:30,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,328 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,328 INFO L186 Difference]: Start difference. First operand has 176 places, 170 transitions, 344 flow. Second operand 8 states and 1158 transitions. [2022-07-12 10:42:30,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 442 flow [2022-07-12 10:42:30,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 174 transitions, 442 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:42:30,332 INFO L242 Difference]: Finished difference. Result has 179 places, 171 transitions, 366 flow [2022-07-12 10:42:30,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=179, PETRI_TRANSITIONS=171} [2022-07-12 10:42:30,333 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2022-07-12 10:42:30,333 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 171 transitions, 366 flow [2022-07-12 10:42:30,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:30,334 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] [2022-07-12 10:42:30,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:42:30,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1168250419, now seen corresponding path program 1 times [2022-07-12 10:42:30,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:30,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227092057] [2022-07-12 10:42:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:30,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:30,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227092057] [2022-07-12 10:42:30,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227092057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:42:30,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:42:30,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:42:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837508777] [2022-07-12 10:42:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:30,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:42:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:42:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:42:30,455 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2022-07-12 10:42:30,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 171 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:30,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2022-07-12 10:42:30,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:30,614 INFO L129 PetriNetUnfolder]: 121/786 cut-off events. [2022-07-12 10:42:30,614 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-07-12 10:42:30,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 786 events. 121/786 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4220 event pairs, 38 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 1073. Up to 133 conditions per place. [2022-07-12 10:42:30,618 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 65 selfloop transitions, 5 changer transitions 4/204 dead transitions. [2022-07-12 10:42:30,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 204 transitions, 585 flow [2022-07-12 10:42:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:42:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:42:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 909 transitions. [2022-07-12 10:42:30,621 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7613065326633166 [2022-07-12 10:42:30,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 909 transitions. [2022-07-12 10:42:30,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 909 transitions. [2022-07-12 10:42:30,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:30,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 909 transitions. [2022-07-12 10:42:30,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,625 INFO L186 Difference]: Start difference. First operand has 179 places, 171 transitions, 366 flow. Second operand 6 states and 909 transitions. [2022-07-12 10:42:30,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 204 transitions, 585 flow [2022-07-12 10:42:30,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 204 transitions, 573 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:42:30,629 INFO L242 Difference]: Finished difference. Result has 181 places, 174 transitions, 383 flow [2022-07-12 10:42:30,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2022-07-12 10:42:30,630 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 2 predicate places. [2022-07-12 10:42:30,630 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 383 flow [2022-07-12 10:42:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:30,631 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:30,631 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] [2022-07-12 10:42:30,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:42:30,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash -720647426, now seen corresponding path program 1 times [2022-07-12 10:42:30,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:30,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824922141] [2022-07-12 10:42:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824922141] [2022-07-12 10:42:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824922141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:42:30,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351887154] [2022-07-12 10:42:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:30,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:42:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:42:30,843 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) [2022-07-12 10:42:30,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:42:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:42:30,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:42:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:30,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:42:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:31,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351887154] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:42:31,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:42:31,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-12 10:42:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38739850] [2022-07-12 10:42:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:31,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:42:31,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:42:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:42:31,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 199 [2022-07-12 10:42:31,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:31,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 199 [2022-07-12 10:42:31,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:31,140 INFO L129 PetriNetUnfolder]: 112/822 cut-off events. [2022-07-12 10:42:31,140 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-12 10:42:31,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 822 events. 112/822 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4265 event pairs, 13 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 1081. Up to 143 conditions per place. [2022-07-12 10:42:31,144 INFO L132 encePairwiseOnDemand]: 194/199 looper letters, 26 selfloop transitions, 5 changer transitions 1/186 dead transitions. [2022-07-12 10:42:31,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 475 flow [2022-07-12 10:42:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:42:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:42:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 693 transitions. [2022-07-12 10:42:31,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8706030150753769 [2022-07-12 10:42:31,147 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 693 transitions. [2022-07-12 10:42:31,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 693 transitions. [2022-07-12 10:42:31,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:31,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 693 transitions. [2022-07-12 10:42:31,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,150 INFO L186 Difference]: Start difference. First operand has 181 places, 174 transitions, 383 flow. Second operand 4 states and 693 transitions. [2022-07-12 10:42:31,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 475 flow [2022-07-12 10:42:31,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 186 transitions, 471 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:42:31,168 INFO L242 Difference]: Finished difference. Result has 183 places, 178 transitions, 415 flow [2022-07-12 10:42:31,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=183, PETRI_TRANSITIONS=178} [2022-07-12 10:42:31,169 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 4 predicate places. [2022-07-12 10:42:31,169 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 178 transitions, 415 flow [2022-07-12 10:42:31,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,170 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:31,170 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] [2022-07-12 10:42:31,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:42:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:42:31,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash -257953500, now seen corresponding path program 2 times [2022-07-12 10:42:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:31,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545257313] [2022-07-12 10:42:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545257313] [2022-07-12 10:42:31,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545257313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:42:31,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:42:31,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:42:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142958538] [2022-07-12 10:42:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:31,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:42:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:42:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:42:31,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 199 [2022-07-12 10:42:31,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 178 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:31,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 199 [2022-07-12 10:42:31,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:31,559 INFO L129 PetriNetUnfolder]: 128/916 cut-off events. [2022-07-12 10:42:31,559 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-07-12 10:42:31,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 916 events. 128/916 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4738 event pairs, 46 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 1356. Up to 189 conditions per place. [2022-07-12 10:42:31,565 INFO L132 encePairwiseOnDemand]: 193/199 looper letters, 29 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2022-07-12 10:42:31,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 189 transitions, 526 flow [2022-07-12 10:42:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:42:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:42:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-07-12 10:42:31,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8603015075376884 [2022-07-12 10:42:31,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-07-12 10:42:31,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-07-12 10:42:31,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:31,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-07-12 10:42:31,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,571 INFO L186 Difference]: Start difference. First operand has 183 places, 178 transitions, 415 flow. Second operand 5 states and 856 transitions. [2022-07-12 10:42:31,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 189 transitions, 526 flow [2022-07-12 10:42:31,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:42:31,575 INFO L242 Difference]: Finished difference. Result has 189 places, 180 transitions, 450 flow [2022-07-12 10:42:31,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2022-07-12 10:42:31,578 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 10 predicate places. [2022-07-12 10:42:31,578 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 450 flow [2022-07-12 10:42:31,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:31,578 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:31,579 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] [2022-07-12 10:42:31,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:42:31,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1246680816, now seen corresponding path program 3 times [2022-07-12 10:42:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808191591] [2022-07-12 10:42:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:31,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808191591] [2022-07-12 10:42:31,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808191591] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:42:31,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172657988] [2022-07-12 10:42:31,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:42:31,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:42:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:42:31,709 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) [2022-07-12 10:42:31,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:42:31,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 10:42:31,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:42:31,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:42:31,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:42:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:31,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:42:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:34,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172657988] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:42:34,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:42:34,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-07-12 10:42:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617618916] [2022-07-12 10:42:34,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:42:34,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:42:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:42:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2022-07-12 10:42:34,013 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 199 [2022-07-12 10:42:34,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 450 flow. Second operand has 12 states, 12 states have (on average 163.75) internal successors, (1965), 12 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:34,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 199 [2022-07-12 10:42:34,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:34,495 INFO L129 PetriNetUnfolder]: 275/1629 cut-off events. [2022-07-12 10:42:34,496 INFO L130 PetriNetUnfolder]: For 676/681 co-relation queries the response was YES. [2022-07-12 10:42:34,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 1629 events. 275/1629 cut-off events. For 676/681 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10317 event pairs, 56 based on Foata normal form. 40/1577 useless extension candidates. Maximal degree in co-relation 2702. Up to 144 conditions per place. [2022-07-12 10:42:34,504 INFO L132 encePairwiseOnDemand]: 189/199 looper letters, 114 selfloop transitions, 46 changer transitions 3/313 dead transitions. [2022-07-12 10:42:34,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 313 transitions, 1269 flow [2022-07-12 10:42:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:42:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:42:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3225 transitions. [2022-07-12 10:42:34,509 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.85294895530283 [2022-07-12 10:42:34,509 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3225 transitions. [2022-07-12 10:42:34,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3225 transitions. [2022-07-12 10:42:34,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:34,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3225 transitions. [2022-07-12 10:42:34,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 169.73684210526315) internal successors, (3225), 19 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,520 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,520 INFO L186 Difference]: Start difference. First operand has 189 places, 180 transitions, 450 flow. Second operand 19 states and 3225 transitions. [2022-07-12 10:42:34,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 313 transitions, 1269 flow [2022-07-12 10:42:34,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 313 transitions, 1231 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-07-12 10:42:34,527 INFO L242 Difference]: Finished difference. Result has 216 places, 225 transitions, 854 flow [2022-07-12 10:42:34,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=854, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2022-07-12 10:42:34,528 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 37 predicate places. [2022-07-12 10:42:34,528 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 854 flow [2022-07-12 10:42:34,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.75) internal successors, (1965), 12 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,529 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:34,529 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:42:34,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:42:34,745 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,SelfDestructingSolverStorable5 [2022-07-12 10:42:34,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -818561113, now seen corresponding path program 1 times [2022-07-12 10:42:34,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:34,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407960262] [2022-07-12 10:42:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407960262] [2022-07-12 10:42:34,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407960262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:42:34,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:42:34,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:42:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059231022] [2022-07-12 10:42:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:34,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:42:34,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:42:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:42:34,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 199 [2022-07-12 10:42:34,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 854 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:34,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 199 [2022-07-12 10:42:34,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:34,898 INFO L129 PetriNetUnfolder]: 94/864 cut-off events. [2022-07-12 10:42:34,899 INFO L130 PetriNetUnfolder]: For 1119/1213 co-relation queries the response was YES. [2022-07-12 10:42:34,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 864 events. 94/864 cut-off events. For 1119/1213 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4408 event pairs, 11 based on Foata normal form. 22/826 useless extension candidates. Maximal degree in co-relation 1670. Up to 128 conditions per place. [2022-07-12 10:42:34,904 INFO L132 encePairwiseOnDemand]: 193/199 looper letters, 45 selfloop transitions, 10 changer transitions 1/234 dead transitions. [2022-07-12 10:42:34,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 234 transitions, 1018 flow [2022-07-12 10:42:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:42:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:42:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2022-07-12 10:42:34,907 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854271356783919 [2022-07-12 10:42:34,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2022-07-12 10:42:34,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2022-07-12 10:42:34,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:34,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2022-07-12 10:42:34,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,910 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,910 INFO L186 Difference]: Start difference. First operand has 216 places, 225 transitions, 854 flow. Second operand 5 states and 881 transitions. [2022-07-12 10:42:34,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 234 transitions, 1018 flow [2022-07-12 10:42:34,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 234 transitions, 990 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-07-12 10:42:34,917 INFO L242 Difference]: Finished difference. Result has 219 places, 226 transitions, 875 flow [2022-07-12 10:42:34,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=875, PETRI_PLACES=219, PETRI_TRANSITIONS=226} [2022-07-12 10:42:34,918 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 40 predicate places. [2022-07-12 10:42:34,918 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 226 transitions, 875 flow [2022-07-12 10:42:34,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:34,919 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:42:34,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:42:34,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -895598935, now seen corresponding path program 2 times [2022-07-12 10:42:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847999900] [2022-07-12 10:42:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:42:34,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847999900] [2022-07-12 10:42:34,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847999900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:42:34,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:42:34,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:42:34,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175413696] [2022-07-12 10:42:34,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:42:34,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:42:34,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:42:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:42:34,970 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 199 [2022-07-12 10:42:34,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 226 transitions, 875 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:34,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:34,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 199 [2022-07-12 10:42:34,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:42:35,091 INFO L129 PetriNetUnfolder]: 108/1057 cut-off events. [2022-07-12 10:42:35,092 INFO L130 PetriNetUnfolder]: For 1228/1287 co-relation queries the response was YES. [2022-07-12 10:42:35,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1057 events. 108/1057 cut-off events. For 1228/1287 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5955 event pairs, 36 based on Foata normal form. 16/993 useless extension candidates. Maximal degree in co-relation 1966. Up to 156 conditions per place. [2022-07-12 10:42:35,098 INFO L132 encePairwiseOnDemand]: 194/199 looper letters, 49 selfloop transitions, 10 changer transitions 2/239 dead transitions. [2022-07-12 10:42:35,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 239 transitions, 1082 flow [2022-07-12 10:42:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:42:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:42:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2022-07-12 10:42:35,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8919597989949749 [2022-07-12 10:42:35,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2022-07-12 10:42:35,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2022-07-12 10:42:35,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:42:35,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2022-07-12 10:42:35,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:35,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:35,104 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:35,104 INFO L186 Difference]: Start difference. First operand has 219 places, 226 transitions, 875 flow. Second operand 4 states and 710 transitions. [2022-07-12 10:42:35,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 239 transitions, 1082 flow [2022-07-12 10:42:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 1059 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-12 10:42:35,110 INFO L242 Difference]: Finished difference. Result has 222 places, 229 transitions, 916 flow [2022-07-12 10:42:35,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=916, PETRI_PLACES=222, PETRI_TRANSITIONS=229} [2022-07-12 10:42:35,113 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 43 predicate places. [2022-07-12 10:42:35,113 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 229 transitions, 916 flow [2022-07-12 10:42:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:35,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:42:35,114 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:42:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:42:35,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:42:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:42:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1051090039, now seen corresponding path program 1 times [2022-07-12 10:42:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:42:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446249592] [2022-07-12 10:42:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:42:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:42:35,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:42:35,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446249592] [2022-07-12 10:42:35,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446249592] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:42:35,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759075664] [2022-07-12 10:42:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:42:35,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:42:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:42:35,224 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) [2022-07-12 10:42:35,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:42:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:42:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-12 10:42:35,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:42:36,032 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:42:36,033 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 23 treesize of output 10 [2022-07-12 10:42:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:42:36,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:42:36,341 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-12 10:42:36,342 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 [2022-07-12 10:42:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:42:36,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759075664] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:42:36,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:42:36,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 22] total 44 [2022-07-12 10:42:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358166302] [2022-07-12 10:42:36,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:42:36,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 10:42:36,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:42:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 10:42:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 10:42:36,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 199 [2022-07-12 10:42:36,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 229 transitions, 916 flow. Second operand has 44 states, 44 states have (on average 91.18181818181819) internal successors, (4012), 44 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:42:36,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:42:36,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 199 [2022-07-12 10:42:36,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:43:56,534 INFO L129 PetriNetUnfolder]: 41067/83516 cut-off events. [2022-07-12 10:43:56,534 INFO L130 PetriNetUnfolder]: For 72691/73148 co-relation queries the response was YES. [2022-07-12 10:43:56,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191715 conditions, 83516 events. 41067/83516 cut-off events. For 72691/73148 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 867057 event pairs, 2270 based on Foata normal form. 769/78206 useless extension candidates. Maximal degree in co-relation 191688. Up to 13942 conditions per place. [2022-07-12 10:43:57,145 INFO L132 encePairwiseOnDemand]: 141/199 looper letters, 3239 selfloop transitions, 1699 changer transitions 1714/6743 dead transitions. [2022-07-12 10:43:57,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1019 places, 6743 transitions, 35378 flow [2022-07-12 10:43:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 799 states. [2022-07-12 10:43:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2022-07-12 10:43:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 74986 transitions. [2022-07-12 10:43:57,231 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.4716070968107119 [2022-07-12 10:43:57,231 INFO L72 ComplementDD]: Start complementDD. Operand 799 states and 74986 transitions. [2022-07-12 10:43:57,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 799 states and 74986 transitions. [2022-07-12 10:43:57,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:43:57,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 799 states and 74986 transitions. [2022-07-12 10:43:57,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 800 states, 799 states have (on average 93.84981226533166) internal successors, (74986), 799 states have internal predecessors, (74986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:43:57,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 800 states, 800 states have (on average 199.0) internal successors, (159200), 800 states have internal predecessors, (159200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:43:57,568 INFO L81 ComplementDD]: Finished complementDD. Result has 800 states, 800 states have (on average 199.0) internal successors, (159200), 800 states have internal predecessors, (159200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:43:57,568 INFO L186 Difference]: Start difference. First operand has 222 places, 229 transitions, 916 flow. Second operand 799 states and 74986 transitions. [2022-07-12 10:43:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1019 places, 6743 transitions, 35378 flow [2022-07-12 10:43:58,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1016 places, 6743 transitions, 35168 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-12 10:43:58,256 INFO L242 Difference]: Finished difference. Result has 1497 places, 2472 transitions, 17140 flow [2022-07-12 10:43:58,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=799, PETRI_FLOW=17140, PETRI_PLACES=1497, PETRI_TRANSITIONS=2472} [2022-07-12 10:43:58,258 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 1318 predicate places. [2022-07-12 10:43:58,258 INFO L495 AbstractCegarLoop]: Abstraction has has 1497 places, 2472 transitions, 17140 flow [2022-07-12 10:43:58,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 91.18181818181819) internal successors, (4012), 44 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:43:58,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:43:58,259 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:43:58,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:43:58,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:43:58,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:43:58,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:43:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1975439035, now seen corresponding path program 2 times [2022-07-12 10:43:58,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:43:58,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112581303] [2022-07-12 10:43:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:43:58,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:43:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:43:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:43:58,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:43:58,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112581303] [2022-07-12 10:43:58,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112581303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:43:58,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507486397] [2022-07-12 10:43:58,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:43:58,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:43:58,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:43:58,612 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) [2022-07-12 10:43:58,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:43:58,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:43:58,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:43:58,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-12 10:43:58,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:43:58,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 10:43:59,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:43:59,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:43:59,758 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:43:59,758 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 23 treesize of output 10 [2022-07-12 10:43:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:43:59,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:44:03,626 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:44:03,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-07-12 10:44:03,634 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-12 10:44:03,635 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 94 treesize of output 85 [2022-07-12 10:44:03,645 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:44:03,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 78 treesize of output 54 [2022-07-12 10:44:03,653 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:44:03,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 20 [2022-07-12 10:44:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:44:03,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507486397] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:44:03,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:44:03,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 29, 26] total 55 [2022-07-12 10:44:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000597811] [2022-07-12 10:44:03,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:44:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-12 10:44:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-12 10:44:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=2601, Unknown=73, NotChecked=0, Total=2970 [2022-07-12 10:44:03,843 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 199 [2022-07-12 10:44:03,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1497 places, 2472 transitions, 17140 flow. Second operand has 55 states, 55 states have (on average 77.2909090909091) internal successors, (4251), 55 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:03,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:03,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 199 [2022-07-12 10:44:03,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand