./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/chl-nzb-file-trans.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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:05:26,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:05:26,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:05:26,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:05:26,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:05:26,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:05:26,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:05:26,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:05:26,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:05:26,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:05:26,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:05:26,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:05:26,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:05:26,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:05:26,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:05:26,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:05:26,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:05:26,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:05:26,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:05:26,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:05:26,412 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:05:26,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:05:26,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:05:26,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:05:26,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:05:26,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:05:26,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:05:26,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:05:26,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:05:26,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:05:26,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:05:26,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:05:26,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:05:26,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:05:26,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:05:26,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:05:26,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:05:26,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:05:26,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:05:26,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:05:26,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:05:26,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:05:26,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:05:26,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:05:26,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:05:26,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:05:26,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:05:26,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:05:26,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:05:26,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:05:26,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:05:26,469 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:05:26,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:05:26,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:05:26,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:05:26,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:05:26,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:05:26,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:05:26,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:05:26,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:05:26,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:05:26,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:05:26,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:05:26,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:05:26,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:05:26,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:05:26,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:05:26,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:26,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:05:26,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:05:26,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:05:26,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:05:26,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:05:26,475 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:05:26,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:05:26,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:05:26,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-07-13 22:05:26,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:05:26,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:05:26,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:05:26,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:05:26,757 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:05:26,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-07-13 22:05:26,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc9e0ddf/8039e5bdd5694b50846bc5995b529821/FLAG140c16499 [2022-07-13 22:05:27,264 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:05:27,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-07-13 22:05:27,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc9e0ddf/8039e5bdd5694b50846bc5995b529821/FLAG140c16499 [2022-07-13 22:05:27,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc9e0ddf/8039e5bdd5694b50846bc5995b529821 [2022-07-13 22:05:27,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:05:27,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:05:27,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:27,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:05:27,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:05:27,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1234111f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27, skipping insertion in model container [2022-07-13 22:05:27,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:05:27,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:05:27,523 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/chl-nzb-file-trans.wvr.c[6450,6463] [2022-07-13 22:05:27,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:27,537 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:05:27,570 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/chl-nzb-file-trans.wvr.c[6450,6463] [2022-07-13 22:05:27,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:27,586 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:05:27,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27 WrapperNode [2022-07-13 22:05:27,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:27,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:27,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:05:27,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:05:27,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,646 INFO L137 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 646 [2022-07-13 22:05:27,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:27,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:05:27,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:05:27,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:05:27,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:05:27,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:05:27,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:05:27,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:05:27,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (1/1) ... [2022-07-13 22:05:27,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:27,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:27,777 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) [2022-07-13 22:05:27,790 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 [2022-07-13 22:05:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:05:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:05:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:05:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:05:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:05:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:05:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:05:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:05:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:05:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:05:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:05:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:05:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:05:27,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:05:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:05:27,821 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:05:27,973 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:05:27,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:05:28,587 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:05:28,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:05:28,608 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:05:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:28 BoogieIcfgContainer [2022-07-13 22:05:28,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:05:28,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:05:28,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:05:28,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:05:28,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:05:27" (1/3) ... [2022-07-13 22:05:28,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef3e271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:28, skipping insertion in model container [2022-07-13 22:05:28,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:27" (2/3) ... [2022-07-13 22:05:28,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef3e271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:28, skipping insertion in model container [2022-07-13 22:05:28,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:28" (3/3) ... [2022-07-13 22:05:28,618 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-07-13 22:05:28,622 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:05:28,630 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:05:28,631 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:05:28,631 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:05:28,867 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:05:28,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 770 places, 851 transitions, 1726 flow [2022-07-13 22:05:29,313 INFO L129 PetriNetUnfolder]: 91/848 cut-off events. [2022-07-13 22:05:29,313 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:05:29,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 848 events. 91/848 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3067 event pairs, 0 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 622. Up to 2 conditions per place. [2022-07-13 22:05:29,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 770 places, 851 transitions, 1726 flow [2022-07-13 22:05:29,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 756 places, 837 transitions, 1692 flow [2022-07-13 22:05:29,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:05:29,383 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@5cb6c3f2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3fc7e24f [2022-07-13 22:05:29,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:05:29,636 INFO L129 PetriNetUnfolder]: 89/826 cut-off events. [2022-07-13 22:05:29,636 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:05:29,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:29,638 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:29,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1800599683, now seen corresponding path program 1 times [2022-07-13 22:05:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500707887] [2022-07-13 22:05:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:29,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500707887] [2022-07-13 22:05:29,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500707887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:29,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:29,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:05:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251854556] [2022-07-13 22:05:29,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:29,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:05:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:05:30,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:05:30,048 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 807 out of 851 [2022-07-13 22:05:30,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 837 transitions, 1692 flow. Second operand has 2 states, 2 states have (on average 811.0) internal successors, (1622), 2 states have internal predecessors, (1622), 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) [2022-07-13 22:05:30,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:30,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 807 of 851 [2022-07-13 22:05:30,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:30,405 INFO L129 PetriNetUnfolder]: 54/800 cut-off events. [2022-07-13 22:05:30,406 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-07-13 22:05:30,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 800 events. 54/800 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2979 event pairs, 0 based on Foata normal form. 60/775 useless extension candidates. Maximal degree in co-relation 597. Up to 7 conditions per place. [2022-07-13 22:05:30,432 INFO L132 encePairwiseOnDemand]: 814/851 looper letters, 6 selfloop transitions, 0 changer transitions 7/800 dead transitions. [2022-07-13 22:05:30,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 800 transitions, 1630 flow [2022-07-13 22:05:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:05:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:05:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1657 transitions. [2022-07-13 22:05:30,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9735605170387779 [2022-07-13 22:05:30,454 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1657 transitions. [2022-07-13 22:05:30,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1657 transitions. [2022-07-13 22:05:30,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:30,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1657 transitions. [2022-07-13 22:05:30,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 828.5) internal successors, (1657), 2 states have internal predecessors, (1657), 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) [2022-07-13 22:05:30,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 851.0) internal successors, (2553), 3 states have internal predecessors, (2553), 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) [2022-07-13 22:05:30,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 851.0) internal successors, (2553), 3 states have internal predecessors, (2553), 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) [2022-07-13 22:05:30,482 INFO L186 Difference]: Start difference. First operand has 756 places, 837 transitions, 1692 flow. Second operand 2 states and 1657 transitions. [2022-07-13 22:05:30,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 800 transitions, 1630 flow [2022-07-13 22:05:30,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 800 transitions, 1618 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:05:30,509 INFO L242 Difference]: Finished difference. Result has 751 places, 793 transitions, 1592 flow [2022-07-13 22:05:30,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=800, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1592, PETRI_PLACES=751, PETRI_TRANSITIONS=793} [2022-07-13 22:05:30,519 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -5 predicate places. [2022-07-13 22:05:30,520 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 793 transitions, 1592 flow [2022-07-13 22:05:30,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 811.0) internal successors, (1622), 2 states have internal predecessors, (1622), 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) [2022-07-13 22:05:30,521 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:30,522 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:05:30,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1922282005, now seen corresponding path program 1 times [2022-07-13 22:05:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:30,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647163312] [2022-07-13 22:05:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647163312] [2022-07-13 22:05:30,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647163312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:30,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:30,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:30,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475927236] [2022-07-13 22:05:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:30,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:30,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:30,793 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-13 22:05:30,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 793 transitions, 1592 flow. Second operand has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 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) [2022-07-13 22:05:30,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:30,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-13 22:05:30,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:32,038 INFO L129 PetriNetUnfolder]: 395/3750 cut-off events. [2022-07-13 22:05:32,039 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-13 22:05:32,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 3750 events. 395/3750 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 33479 event pairs, 96 based on Foata normal form. 0/3311 useless extension candidates. Maximal degree in co-relation 4066. Up to 184 conditions per place. [2022-07-13 22:05:32,148 INFO L132 encePairwiseOnDemand]: 847/851 looper letters, 33 selfloop transitions, 2 changer transitions 0/808 dead transitions. [2022-07-13 22:05:32,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 808 transitions, 1697 flow [2022-07-13 22:05:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-13 22:05:32,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-13 22:05:32,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-13 22:05:32,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-13 22:05:32,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:32,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-13 22:05:32,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 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) [2022-07-13 22:05:32,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:32,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:32,168 INFO L186 Difference]: Start difference. First operand has 751 places, 793 transitions, 1592 flow. Second operand 3 states and 2416 transitions. [2022-07-13 22:05:32,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 808 transitions, 1697 flow [2022-07-13 22:05:32,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 808 transitions, 1697 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:05:32,183 INFO L242 Difference]: Finished difference. Result has 748 places, 795 transitions, 1612 flow [2022-07-13 22:05:32,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1612, PETRI_PLACES=748, PETRI_TRANSITIONS=795} [2022-07-13 22:05:32,185 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -8 predicate places. [2022-07-13 22:05:32,185 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 795 transitions, 1612 flow [2022-07-13 22:05:32,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 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) [2022-07-13 22:05:32,187 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:32,187 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:32,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:05:32,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:32,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 88216851, now seen corresponding path program 2 times [2022-07-13 22:05:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:32,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748091471] [2022-07-13 22:05:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:32,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:32,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:32,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748091471] [2022-07-13 22:05:32,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748091471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:32,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:32,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:32,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740364482] [2022-07-13 22:05:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:32,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:32,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:32,308 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-13 22:05:32,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 795 transitions, 1612 flow. Second operand has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 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) [2022-07-13 22:05:32,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:32,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-13 22:05:32,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:33,424 INFO L129 PetriNetUnfolder]: 387/3844 cut-off events. [2022-07-13 22:05:33,424 INFO L130 PetriNetUnfolder]: For 104/111 co-relation queries the response was YES. [2022-07-13 22:05:33,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 3844 events. 387/3844 cut-off events. For 104/111 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 34432 event pairs, 98 based on Foata normal form. 6/3459 useless extension candidates. Maximal degree in co-relation 4240. Up to 196 conditions per place. [2022-07-13 22:05:33,546 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 33 selfloop transitions, 4 changer transitions 0/810 dead transitions. [2022-07-13 22:05:33,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 810 transitions, 1725 flow [2022-07-13 22:05:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-13 22:05:33,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-13 22:05:33,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-13 22:05:33,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-13 22:05:33,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:33,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-13 22:05:33,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 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) [2022-07-13 22:05:33,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:33,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:33,569 INFO L186 Difference]: Start difference. First operand has 748 places, 795 transitions, 1612 flow. Second operand 3 states and 2416 transitions. [2022-07-13 22:05:33,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 810 transitions, 1725 flow [2022-07-13 22:05:33,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 810 transitions, 1723 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:33,586 INFO L242 Difference]: Finished difference. Result has 751 places, 797 transitions, 1642 flow [2022-07-13 22:05:33,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1642, PETRI_PLACES=751, PETRI_TRANSITIONS=797} [2022-07-13 22:05:33,589 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -5 predicate places. [2022-07-13 22:05:33,589 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 797 transitions, 1642 flow [2022-07-13 22:05:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 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) [2022-07-13 22:05:33,591 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:33,591 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:05:33,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1761177293, now seen corresponding path program 1 times [2022-07-13 22:05:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:33,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137112835] [2022-07-13 22:05:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:33,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137112835] [2022-07-13 22:05:33,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137112835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:33,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:33,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684298969] [2022-07-13 22:05:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:33,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:33,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:33,679 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-13 22:05:33,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 797 transitions, 1642 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:33,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:33,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-13 22:05:33,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:35,421 INFO L129 PetriNetUnfolder]: 789/6879 cut-off events. [2022-07-13 22:05:35,421 INFO L130 PetriNetUnfolder]: For 396/463 co-relation queries the response was YES. [2022-07-13 22:05:35,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 6879 events. 789/6879 cut-off events. For 396/463 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 71122 event pairs, 210 based on Foata normal form. 4/6060 useless extension candidates. Maximal degree in co-relation 7573. Up to 390 conditions per place. [2022-07-13 22:05:35,552 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 32 selfloop transitions, 5 changer transitions 0/812 dead transitions. [2022-07-13 22:05:35,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 812 transitions, 1757 flow [2022-07-13 22:05:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2415 transitions. [2022-07-13 22:05:35,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9459459459459459 [2022-07-13 22:05:35,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2415 transitions. [2022-07-13 22:05:35,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2415 transitions. [2022-07-13 22:05:35,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:35,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2415 transitions. [2022-07-13 22:05:35,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 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) [2022-07-13 22:05:35,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:35,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:35,576 INFO L186 Difference]: Start difference. First operand has 751 places, 797 transitions, 1642 flow. Second operand 3 states and 2415 transitions. [2022-07-13 22:05:35,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 812 transitions, 1757 flow [2022-07-13 22:05:35,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 812 transitions, 1745 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:35,591 INFO L242 Difference]: Finished difference. Result has 753 places, 800 transitions, 1675 flow [2022-07-13 22:05:35,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1675, PETRI_PLACES=753, PETRI_TRANSITIONS=800} [2022-07-13 22:05:35,595 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -3 predicate places. [2022-07-13 22:05:35,596 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 800 transitions, 1675 flow [2022-07-13 22:05:35,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:35,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:35,598 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:35,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:05:35,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1465338821, now seen corresponding path program 1 times [2022-07-13 22:05:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399286476] [2022-07-13 22:05:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:35,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399286476] [2022-07-13 22:05:35,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399286476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:35,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:35,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704116792] [2022-07-13 22:05:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:35,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:35,688 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-13 22:05:35,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 800 transitions, 1675 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:35,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:35,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-13 22:05:35,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:36,779 INFO L129 PetriNetUnfolder]: 292/3140 cut-off events. [2022-07-13 22:05:36,779 INFO L130 PetriNetUnfolder]: For 320/389 co-relation queries the response was YES. [2022-07-13 22:05:36,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 3140 events. 292/3140 cut-off events. For 320/389 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 28006 event pairs, 72 based on Foata normal form. 8/2876 useless extension candidates. Maximal degree in co-relation 3658. Up to 184 conditions per place. [2022-07-13 22:05:36,917 INFO L132 encePairwiseOnDemand]: 847/851 looper letters, 35 selfloop transitions, 4 changer transitions 0/816 dead transitions. [2022-07-13 22:05:36,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 816 transitions, 1800 flow [2022-07-13 22:05:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-13 22:05:36,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-13 22:05:36,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-13 22:05:36,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-13 22:05:36,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:36,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-13 22:05:36,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 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) [2022-07-13 22:05:36,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:36,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:36,942 INFO L186 Difference]: Start difference. First operand has 753 places, 800 transitions, 1675 flow. Second operand 3 states and 2416 transitions. [2022-07-13 22:05:36,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 816 transitions, 1800 flow [2022-07-13 22:05:36,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 816 transitions, 1788 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:36,958 INFO L242 Difference]: Finished difference. Result has 755 places, 803 transitions, 1707 flow [2022-07-13 22:05:36,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1707, PETRI_PLACES=755, PETRI_TRANSITIONS=803} [2022-07-13 22:05:36,960 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -1 predicate places. [2022-07-13 22:05:36,961 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 803 transitions, 1707 flow [2022-07-13 22:05:36,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:36,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,963 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:05:36,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1042716161, now seen corresponding path program 2 times [2022-07-13 22:05:36,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210035948] [2022-07-13 22:05:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:37,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210035948] [2022-07-13 22:05:37,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210035948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:37,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934827551] [2022-07-13 22:05:37,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:37,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:37,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:37,035 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-13 22:05:37,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 803 transitions, 1707 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:37,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-13 22:05:37,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,875 INFO L129 PetriNetUnfolder]: 269/3037 cut-off events. [2022-07-13 22:05:37,875 INFO L130 PetriNetUnfolder]: For 592/650 co-relation queries the response was YES. [2022-07-13 22:05:37,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 3037 events. 269/3037 cut-off events. For 592/650 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26944 event pairs, 80 based on Foata normal form. 8/2792 useless extension candidates. Maximal degree in co-relation 3638. Up to 201 conditions per place. [2022-07-13 22:05:37,967 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 37 selfloop transitions, 5 changer transitions 0/818 dead transitions. [2022-07-13 22:05:37,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 818 transitions, 1837 flow [2022-07-13 22:05:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-13 22:05:37,980 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-13 22:05:37,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-13 22:05:37,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-13 22:05:37,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-13 22:05:37,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 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) [2022-07-13 22:05:37,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:37,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:37,993 INFO L186 Difference]: Start difference. First operand has 755 places, 803 transitions, 1707 flow. Second operand 3 states and 2416 transitions. [2022-07-13 22:05:37,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 818 transitions, 1837 flow [2022-07-13 22:05:38,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 818 transitions, 1833 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:38,011 INFO L242 Difference]: Finished difference. Result has 758 places, 805 transitions, 1752 flow [2022-07-13 22:05:38,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1752, PETRI_PLACES=758, PETRI_TRANSITIONS=805} [2022-07-13 22:05:38,013 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 2 predicate places. [2022-07-13 22:05:38,013 INFO L495 AbstractCegarLoop]: Abstraction has has 758 places, 805 transitions, 1752 flow [2022-07-13 22:05:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:38,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,015 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:05:38,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1621645087, now seen corresponding path program 2 times [2022-07-13 22:05:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467570459] [2022-07-13 22:05:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467570459] [2022-07-13 22:05:38,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467570459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217406412] [2022-07-13 22:05:38,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:38,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:38,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-13 22:05:38,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 805 transitions, 1752 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:38,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-13 22:05:38,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,416 INFO L129 PetriNetUnfolder]: 792/7438 cut-off events. [2022-07-13 22:05:39,416 INFO L130 PetriNetUnfolder]: For 835/927 co-relation queries the response was YES. [2022-07-13 22:05:39,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 7438 events. 792/7438 cut-off events. For 835/927 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 78527 event pairs, 219 based on Foata normal form. 12/6646 useless extension candidates. Maximal degree in co-relation 8392. Up to 409 conditions per place. [2022-07-13 22:05:39,540 INFO L132 encePairwiseOnDemand]: 847/851 looper letters, 36 selfloop transitions, 4 changer transitions 0/817 dead transitions. [2022-07-13 22:05:39,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 817 transitions, 1864 flow [2022-07-13 22:05:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2415 transitions. [2022-07-13 22:05:39,546 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9459459459459459 [2022-07-13 22:05:39,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2415 transitions. [2022-07-13 22:05:39,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2415 transitions. [2022-07-13 22:05:39,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:39,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2415 transitions. [2022-07-13 22:05:39,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 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) [2022-07-13 22:05:39,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:39,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:39,558 INFO L186 Difference]: Start difference. First operand has 758 places, 805 transitions, 1752 flow. Second operand 3 states and 2415 transitions. [2022-07-13 22:05:39,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 760 places, 817 transitions, 1864 flow [2022-07-13 22:05:39,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 817 transitions, 1848 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:39,573 INFO L242 Difference]: Finished difference. Result has 760 places, 805 transitions, 1768 flow [2022-07-13 22:05:39,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=799, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1768, PETRI_PLACES=760, PETRI_TRANSITIONS=805} [2022-07-13 22:05:39,575 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 4 predicate places. [2022-07-13 22:05:39,575 INFO L495 AbstractCegarLoop]: Abstraction has has 760 places, 805 transitions, 1768 flow [2022-07-13 22:05:39,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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) [2022-07-13 22:05:39,576 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:39,576 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:05:39,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1028007672, now seen corresponding path program 1 times [2022-07-13 22:05:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:39,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157054965] [2022-07-13 22:05:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157054965] [2022-07-13 22:05:39,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157054965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646058952] [2022-07-13 22:05:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:39,675 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 774 out of 851 [2022-07-13 22:05:39,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 805 transitions, 1768 flow. Second operand has 5 states, 5 states have (on average 779.4) internal successors, (3897), 5 states have internal predecessors, (3897), 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) [2022-07-13 22:05:39,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 774 of 851 [2022-07-13 22:05:39,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,988 INFO L129 PetriNetUnfolder]: 54/1036 cut-off events. [2022-07-13 22:05:39,988 INFO L130 PetriNetUnfolder]: For 136/174 co-relation queries the response was YES. [2022-07-13 22:05:40,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1036 events. 54/1036 cut-off events. For 136/174 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5296 event pairs, 0 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 1190. Up to 55 conditions per place. [2022-07-13 22:05:40,022 INFO L132 encePairwiseOnDemand]: 836/851 looper letters, 39 selfloop transitions, 12 changer transitions 0/817 dead transitions. [2022-07-13 22:05:40,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 817 transitions, 1894 flow [2022-07-13 22:05:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:05:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:05:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3924 transitions. [2022-07-13 22:05:40,031 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9222091656874265 [2022-07-13 22:05:40,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3924 transitions. [2022-07-13 22:05:40,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3924 transitions. [2022-07-13 22:05:40,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3924 transitions. [2022-07-13 22:05:40,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 784.8) internal successors, (3924), 5 states have internal predecessors, (3924), 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) [2022-07-13 22:05:40,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 851.0) internal successors, (5106), 6 states have internal predecessors, (5106), 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) [2022-07-13 22:05:40,050 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 851.0) internal successors, (5106), 6 states have internal predecessors, (5106), 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) [2022-07-13 22:05:40,050 INFO L186 Difference]: Start difference. First operand has 760 places, 805 transitions, 1768 flow. Second operand 5 states and 3924 transitions. [2022-07-13 22:05:40,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 817 transitions, 1894 flow [2022-07-13 22:05:40,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 817 transitions, 1886 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:40,067 INFO L242 Difference]: Finished difference. Result has 764 places, 808 transitions, 1808 flow [2022-07-13 22:05:40,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1808, PETRI_PLACES=764, PETRI_TRANSITIONS=808} [2022-07-13 22:05:40,069 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 8 predicate places. [2022-07-13 22:05:40,069 INFO L495 AbstractCegarLoop]: Abstraction has has 764 places, 808 transitions, 1808 flow [2022-07-13 22:05:40,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 779.4) internal successors, (3897), 5 states have internal predecessors, (3897), 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) [2022-07-13 22:05:40,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:40,071 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:40,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:05:40,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:40,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash -152592993, now seen corresponding path program 1 times [2022-07-13 22:05:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:40,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028915137] [2022-07-13 22:05:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:05:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028915137] [2022-07-13 22:05:40,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028915137] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:40,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661010519] [2022-07-13 22:05:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:40,192 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) [2022-07-13 22:05:40,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:05:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:05:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:05:40,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:05:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:05:40,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661010519] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:05:40,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:05:40,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-13 22:05:40,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705681722] [2022-07-13 22:05:40,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:05:40,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:05:40,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:05:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:05:40,650 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 771 out of 851 [2022-07-13 22:05:40,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 808 transitions, 1808 flow. Second operand has 15 states, 15 states have (on average 775.0666666666667) internal successors, (11626), 15 states have internal predecessors, (11626), 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) [2022-07-13 22:05:40,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:40,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 771 of 851 [2022-07-13 22:05:40,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:41,210 INFO L129 PetriNetUnfolder]: 54/1060 cut-off events. [2022-07-13 22:05:41,211 INFO L130 PetriNetUnfolder]: For 127/164 co-relation queries the response was YES. [2022-07-13 22:05:41,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 1060 events. 54/1060 cut-off events. For 127/164 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5257 event pairs, 0 based on Foata normal form. 6/987 useless extension candidates. Maximal degree in co-relation 1260. Up to 46 conditions per place. [2022-07-13 22:05:41,248 INFO L132 encePairwiseOnDemand]: 827/851 looper letters, 42 selfloop transitions, 33 changer transitions 0/838 dead transitions. [2022-07-13 22:05:41,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 838 transitions, 2024 flow [2022-07-13 22:05:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:05:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:05:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 8562 transitions. [2022-07-13 22:05:41,265 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9146458711676103 [2022-07-13 22:05:41,265 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 8562 transitions. [2022-07-13 22:05:41,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 8562 transitions. [2022-07-13 22:05:41,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:41,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 8562 transitions. [2022-07-13 22:05:41,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 778.3636363636364) internal successors, (8562), 11 states have internal predecessors, (8562), 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) [2022-07-13 22:05:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 851.0) internal successors, (10212), 12 states have internal predecessors, (10212), 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) [2022-07-13 22:05:41,303 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 851.0) internal successors, (10212), 12 states have internal predecessors, (10212), 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) [2022-07-13 22:05:41,303 INFO L186 Difference]: Start difference. First operand has 764 places, 808 transitions, 1808 flow. Second operand 11 states and 8562 transitions. [2022-07-13 22:05:41,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 838 transitions, 2024 flow [2022-07-13 22:05:41,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 838 transitions, 2006 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:41,319 INFO L242 Difference]: Finished difference. Result has 774 places, 826 transitions, 1957 flow [2022-07-13 22:05:41,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=774, PETRI_TRANSITIONS=826} [2022-07-13 22:05:41,322 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 18 predicate places. [2022-07-13 22:05:41,322 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 826 transitions, 1957 flow [2022-07-13 22:05:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 775.0666666666667) internal successors, (11626), 15 states have internal predecessors, (11626), 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) [2022-07-13 22:05:41,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:41,327 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:41,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:05:41,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:41,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash -220081363, now seen corresponding path program 2 times [2022-07-13 22:05:41,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:41,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851401492] [2022-07-13 22:05:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:41,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:05:41,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851401492] [2022-07-13 22:05:41,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851401492] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:41,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932200158] [2022-07-13 22:05:41,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:05:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:41,712 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) [2022-07-13 22:05:41,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:05:41,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:05:41,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:05:41,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:05:41,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 22:05:42,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:05:42,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932200158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:42,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:05:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-13 22:05:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366056674] [2022-07-13 22:05:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:42,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:42,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:42,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:42,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:42,015 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 851 [2022-07-13 22:05:42,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 826 transitions, 1957 flow. Second operand has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 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) [2022-07-13 22:05:42,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:42,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 851 [2022-07-13 22:05:42,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:44,086 INFO L129 PetriNetUnfolder]: 1439/7059 cut-off events. [2022-07-13 22:05:44,087 INFO L130 PetriNetUnfolder]: For 3251/3619 co-relation queries the response was YES. [2022-07-13 22:05:44,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11045 conditions, 7059 events. 1439/7059 cut-off events. For 3251/3619 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 74434 event pairs, 703 based on Foata normal form. 4/6478 useless extension candidates. Maximal degree in co-relation 11031. Up to 1306 conditions per place. [2022-07-13 22:05:44,263 INFO L132 encePairwiseOnDemand]: 838/851 looper letters, 111 selfloop transitions, 23 changer transitions 2/896 dead transitions. [2022-07-13 22:05:44,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 896 transitions, 2413 flow [2022-07-13 22:05:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5414 transitions. [2022-07-13 22:05:44,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9088467349336915 [2022-07-13 22:05:44,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5414 transitions. [2022-07-13 22:05:44,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5414 transitions. [2022-07-13 22:05:44,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:44,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5414 transitions. [2022-07-13 22:05:44,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 773.4285714285714) internal successors, (5414), 7 states have internal predecessors, (5414), 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) [2022-07-13 22:05:44,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 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) [2022-07-13 22:05:44,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 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) [2022-07-13 22:05:44,293 INFO L186 Difference]: Start difference. First operand has 774 places, 826 transitions, 1957 flow. Second operand 7 states and 5414 transitions. [2022-07-13 22:05:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 896 transitions, 2413 flow [2022-07-13 22:05:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 777 places, 896 transitions, 2388 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:44,312 INFO L242 Difference]: Finished difference. Result has 780 places, 838 transitions, 2035 flow [2022-07-13 22:05:44,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2035, PETRI_PLACES=780, PETRI_TRANSITIONS=838} [2022-07-13 22:05:44,314 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 24 predicate places. [2022-07-13 22:05:44,314 INFO L495 AbstractCegarLoop]: Abstraction has has 780 places, 838 transitions, 2035 flow [2022-07-13 22:05:44,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 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) [2022-07-13 22:05:44,316 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:44,316 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:44,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:05:44,531 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,SelfDestructingSolverStorable9 [2022-07-13 22:05:44,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1347170811, now seen corresponding path program 3 times [2022-07-13 22:05:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:44,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921431155] [2022-07-13 22:05:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:05:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:44,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921431155] [2022-07-13 22:05:44,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921431155] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:44,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716354745] [2022-07-13 22:05:44,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:05:44,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:44,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:44,655 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) [2022-07-13 22:05:44,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:05:44,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 22:05:44,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:05:44,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:05:44,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 22:05:44,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:05:44,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716354745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:44,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:05:44,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-13 22:05:44,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938864173] [2022-07-13 22:05:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:44,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:44,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 851 [2022-07-13 22:05:44,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 838 transitions, 2035 flow. Second operand has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 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) [2022-07-13 22:05:44,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:44,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 851 [2022-07-13 22:05:44,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,438 INFO L129 PetriNetUnfolder]: 1616/9270 cut-off events. [2022-07-13 22:05:47,438 INFO L130 PetriNetUnfolder]: For 4815/5157 co-relation queries the response was YES. [2022-07-13 22:05:47,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13438 conditions, 9270 events. 1616/9270 cut-off events. For 4815/5157 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 105244 event pairs, 326 based on Foata normal form. 72/8651 useless extension candidates. Maximal degree in co-relation 13421. Up to 860 conditions per place. [2022-07-13 22:05:47,596 INFO L132 encePairwiseOnDemand]: 824/851 looper letters, 132 selfloop transitions, 42 changer transitions 3/937 dead transitions. [2022-07-13 22:05:47,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 937 transitions, 2763 flow [2022-07-13 22:05:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:05:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:05:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 6949 transitions. [2022-07-13 22:05:47,607 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9072986029507769 [2022-07-13 22:05:47,607 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 6949 transitions. [2022-07-13 22:05:47,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 6949 transitions. [2022-07-13 22:05:47,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 6949 transitions. [2022-07-13 22:05:47,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 772.1111111111111) internal successors, (6949), 9 states have internal predecessors, (6949), 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) [2022-07-13 22:05:47,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 851.0) internal successors, (8510), 10 states have internal predecessors, (8510), 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) [2022-07-13 22:05:47,628 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 851.0) internal successors, (8510), 10 states have internal predecessors, (8510), 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) [2022-07-13 22:05:47,628 INFO L186 Difference]: Start difference. First operand has 780 places, 838 transitions, 2035 flow. Second operand 9 states and 6949 transitions. [2022-07-13 22:05:47,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 937 transitions, 2763 flow [2022-07-13 22:05:47,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 937 transitions, 2763 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:05:47,648 INFO L242 Difference]: Finished difference. Result has 792 places, 862 transitions, 2344 flow [2022-07-13 22:05:47,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=806, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2344, PETRI_PLACES=792, PETRI_TRANSITIONS=862} [2022-07-13 22:05:47,650 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 36 predicate places. [2022-07-13 22:05:47,650 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 862 transitions, 2344 flow [2022-07-13 22:05:47,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 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) [2022-07-13 22:05:47,651 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,652 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:47,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:05:47,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:47,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1558049619, now seen corresponding path program 4 times [2022-07-13 22:05:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472831972] [2022-07-13 22:05:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:05:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472831972] [2022-07-13 22:05:47,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472831972] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:47,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689485728] [2022-07-13 22:05:47,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:05:47,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:47,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:47,994 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) [2022-07-13 22:05:47,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:05:48,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:05:48,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:05:48,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:05:48,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:05:48,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:05:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:05:48,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689485728] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:05:48,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:05:48,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-13 22:05:48,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699640075] [2022-07-13 22:05:48,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:05:48,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:05:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:05:48,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 771 out of 851 [2022-07-13 22:05:48,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 862 transitions, 2344 flow. Second operand has 22 states, 22 states have (on average 774.6818181818181) internal successors, (17043), 22 states have internal predecessors, (17043), 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) [2022-07-13 22:05:48,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 771 of 851 [2022-07-13 22:05:48,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,336 INFO L129 PetriNetUnfolder]: 142/1950 cut-off events. [2022-07-13 22:05:49,336 INFO L130 PetriNetUnfolder]: For 1179/1316 co-relation queries the response was YES. [2022-07-13 22:05:49,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1950 events. 142/1950 cut-off events. For 1179/1316 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14117 event pairs, 9 based on Foata normal form. 6/1831 useless extension candidates. Maximal degree in co-relation 2800. Up to 75 conditions per place. [2022-07-13 22:05:49,402 INFO L132 encePairwiseOnDemand]: 827/851 looper letters, 54 selfloop transitions, 51 changer transitions 0/904 dead transitions. [2022-07-13 22:05:49,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 904 transitions, 2722 flow [2022-07-13 22:05:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 13218 transitions. [2022-07-13 22:05:49,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9136655837423101 [2022-07-13 22:05:49,423 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 13218 transitions. [2022-07-13 22:05:49,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 13218 transitions. [2022-07-13 22:05:49,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 13218 transitions. [2022-07-13 22:05:49,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 777.5294117647059) internal successors, (13218), 17 states have internal predecessors, (13218), 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) [2022-07-13 22:05:49,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 851.0) internal successors, (15318), 18 states have internal predecessors, (15318), 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) [2022-07-13 22:05:49,457 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 851.0) internal successors, (15318), 18 states have internal predecessors, (15318), 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) [2022-07-13 22:05:49,458 INFO L186 Difference]: Start difference. First operand has 792 places, 862 transitions, 2344 flow. Second operand 17 states and 13218 transitions. [2022-07-13 22:05:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 904 transitions, 2722 flow [2022-07-13 22:05:49,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 904 transitions, 2714 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:49,479 INFO L242 Difference]: Finished difference. Result has 809 places, 883 transitions, 2599 flow [2022-07-13 22:05:49,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=823, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2599, PETRI_PLACES=809, PETRI_TRANSITIONS=883} [2022-07-13 22:05:49,482 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 53 predicate places. [2022-07-13 22:05:49,483 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 883 transitions, 2599 flow [2022-07-13 22:05:49,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 774.6818181818181) internal successors, (17043), 22 states have internal predecessors, (17043), 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) [2022-07-13 22:05:49,485 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,485 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:49,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:05:49,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:49,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:49,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2100223413, now seen corresponding path program 5 times [2022-07-13 22:05:49,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699897942] [2022-07-13 22:05:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:05:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699897942] [2022-07-13 22:05:49,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699897942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218643443] [2022-07-13 22:05:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:49,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-07-13 22:05:49,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 883 transitions, 2599 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 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) [2022-07-13 22:05:49,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-07-13 22:05:49,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,588 INFO L129 PetriNetUnfolder]: 892/10458 cut-off events. [2022-07-13 22:05:52,588 INFO L130 PetriNetUnfolder]: For 1809/1960 co-relation queries the response was YES. [2022-07-13 22:05:52,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12318 conditions, 10458 events. 892/10458 cut-off events. For 1809/1960 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 112535 event pairs, 93 based on Foata normal form. 4/9428 useless extension candidates. Maximal degree in co-relation 12293. Up to 303 conditions per place. [2022-07-13 22:05:52,826 INFO L132 encePairwiseOnDemand]: 846/851 looper letters, 28 selfloop transitions, 4 changer transitions 0/892 dead transitions. [2022-07-13 22:05:52,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 892 transitions, 2685 flow [2022-07-13 22:05:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2403 transitions. [2022-07-13 22:05:52,831 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9412455934195064 [2022-07-13 22:05:52,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2403 transitions. [2022-07-13 22:05:52,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2403 transitions. [2022-07-13 22:05:52,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2403 transitions. [2022-07-13 22:05:52,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.0) internal successors, (2403), 3 states have internal predecessors, (2403), 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) [2022-07-13 22:05:52,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:52,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:52,838 INFO L186 Difference]: Start difference. First operand has 809 places, 883 transitions, 2599 flow. Second operand 3 states and 2403 transitions. [2022-07-13 22:05:52,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 892 transitions, 2685 flow [2022-07-13 22:05:52,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 803 places, 892 transitions, 2618 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:52,863 INFO L242 Difference]: Finished difference. Result has 804 places, 884 transitions, 2550 flow [2022-07-13 22:05:52,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=801, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2550, PETRI_PLACES=804, PETRI_TRANSITIONS=884} [2022-07-13 22:05:52,865 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 48 predicate places. [2022-07-13 22:05:52,865 INFO L495 AbstractCegarLoop]: Abstraction has has 804 places, 884 transitions, 2550 flow [2022-07-13 22:05:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 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) [2022-07-13 22:05:52,866 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,866 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:52,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:05:52,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -727000354, now seen corresponding path program 1 times [2022-07-13 22:05:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836422706] [2022-07-13 22:05:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:05:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836422706] [2022-07-13 22:05:52,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836422706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745956347] [2022-07-13 22:05:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:52,981 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-07-13 22:05:52,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 804 places, 884 transitions, 2550 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 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) [2022-07-13 22:05:52,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-07-13 22:05:52,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,105 INFO L129 PetriNetUnfolder]: 648/8930 cut-off events. [2022-07-13 22:05:56,106 INFO L130 PetriNetUnfolder]: For 2549/2836 co-relation queries the response was YES. [2022-07-13 22:05:56,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11349 conditions, 8930 events. 648/8930 cut-off events. For 2549/2836 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 91115 event pairs, 39 based on Foata normal form. 0/8232 useless extension candidates. Maximal degree in co-relation 11323. Up to 191 conditions per place. [2022-07-13 22:05:56,486 INFO L132 encePairwiseOnDemand]: 846/851 looper letters, 29 selfloop transitions, 4 changer transitions 0/894 dead transitions. [2022-07-13 22:05:56,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 806 places, 894 transitions, 2641 flow [2022-07-13 22:05:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2404 transitions. [2022-07-13 22:05:56,490 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9416372894633764 [2022-07-13 22:05:56,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2404 transitions. [2022-07-13 22:05:56,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2404 transitions. [2022-07-13 22:05:56,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2404 transitions. [2022-07-13 22:05:56,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.3333333333334) internal successors, (2404), 3 states have internal predecessors, (2404), 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) [2022-07-13 22:05:56,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:56,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:56,497 INFO L186 Difference]: Start difference. First operand has 804 places, 884 transitions, 2550 flow. Second operand 3 states and 2404 transitions. [2022-07-13 22:05:56,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 806 places, 894 transitions, 2641 flow [2022-07-13 22:05:56,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 894 transitions, 2637 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:56,540 INFO L242 Difference]: Finished difference. Result has 806 places, 885 transitions, 2564 flow [2022-07-13 22:05:56,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2564, PETRI_PLACES=806, PETRI_TRANSITIONS=885} [2022-07-13 22:05:56,542 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 50 predicate places. [2022-07-13 22:05:56,543 INFO L495 AbstractCegarLoop]: Abstraction has has 806 places, 885 transitions, 2564 flow [2022-07-13 22:05:56,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 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) [2022-07-13 22:05:56,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:56,544 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:56,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:05:56,545 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1159849994, now seen corresponding path program 1 times [2022-07-13 22:05:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:56,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231791491] [2022-07-13 22:05:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:05:56,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:56,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231791491] [2022-07-13 22:05:56,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231791491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:56,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:56,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:56,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685617900] [2022-07-13 22:05:56,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:56,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:56,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:56,654 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-07-13 22:05:56,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 885 transitions, 2564 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 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) [2022-07-13 22:05:56,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:56,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-07-13 22:05:56,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:59,106 INFO L129 PetriNetUnfolder]: 1172/9283 cut-off events. [2022-07-13 22:05:59,106 INFO L130 PetriNetUnfolder]: For 1926/2314 co-relation queries the response was YES. [2022-07-13 22:05:59,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11453 conditions, 9283 events. 1172/9283 cut-off events. For 1926/2314 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 101492 event pairs, 390 based on Foata normal form. 2/8053 useless extension candidates. Maximal degree in co-relation 11426. Up to 934 conditions per place. [2022-07-13 22:05:59,250 INFO L132 encePairwiseOnDemand]: 846/851 looper letters, 27 selfloop transitions, 4 changer transitions 0/893 dead transitions. [2022-07-13 22:05:59,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 893 transitions, 2645 flow [2022-07-13 22:05:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2402 transitions. [2022-07-13 22:05:59,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9408538973756365 [2022-07-13 22:05:59,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2402 transitions. [2022-07-13 22:05:59,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2402 transitions. [2022-07-13 22:05:59,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:59,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2402 transitions. [2022-07-13 22:05:59,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 800.6666666666666) internal successors, (2402), 3 states have internal predecessors, (2402), 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) [2022-07-13 22:05:59,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:59,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 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) [2022-07-13 22:05:59,261 INFO L186 Difference]: Start difference. First operand has 806 places, 885 transitions, 2564 flow. Second operand 3 states and 2402 transitions. [2022-07-13 22:05:59,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 893 transitions, 2645 flow [2022-07-13 22:05:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 893 transitions, 2641 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:59,279 INFO L242 Difference]: Finished difference. Result has 808 places, 886 transitions, 2578 flow [2022-07-13 22:05:59,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2578, PETRI_PLACES=808, PETRI_TRANSITIONS=886} [2022-07-13 22:05:59,281 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 52 predicate places. [2022-07-13 22:05:59,281 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 886 transitions, 2578 flow [2022-07-13 22:05:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 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) [2022-07-13 22:05:59,282 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:59,282 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:05:59,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:59,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash -86089824, now seen corresponding path program 1 times [2022-07-13 22:05:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:59,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527484317] [2022-07-13 22:05:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:05:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527484317] [2022-07-13 22:05:59,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527484317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:05:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615209852] [2022-07-13 22:05:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:05:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:05:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:05:59,413 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 758 out of 851 [2022-07-13 22:05:59,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 886 transitions, 2578 flow. Second operand has 6 states, 6 states have (on average 764.5) internal successors, (4587), 6 states have internal predecessors, (4587), 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) [2022-07-13 22:05:59,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 758 of 851 [2022-07-13 22:05:59,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:02,017 INFO L129 PetriNetUnfolder]: 595/8051 cut-off events. [2022-07-13 22:06:02,017 INFO L130 PetriNetUnfolder]: For 2064/2461 co-relation queries the response was YES. [2022-07-13 22:06:02,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10313 conditions, 8051 events. 595/8051 cut-off events. For 2064/2461 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 83175 event pairs, 52 based on Foata normal form. 26/7394 useless extension candidates. Maximal degree in co-relation 10285. Up to 435 conditions per place. [2022-07-13 22:06:02,369 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 55 selfloop transitions, 3 changer transitions 4/900 dead transitions. [2022-07-13 22:06:02,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 900 transitions, 2739 flow [2022-07-13 22:06:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:06:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:06:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5369 transitions. [2022-07-13 22:06:02,375 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9012925969447708 [2022-07-13 22:06:02,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5369 transitions. [2022-07-13 22:06:02,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5369 transitions. [2022-07-13 22:06:02,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:02,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5369 transitions. [2022-07-13 22:06:02,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 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) [2022-07-13 22:06:02,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 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) [2022-07-13 22:06:02,387 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 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) [2022-07-13 22:06:02,387 INFO L186 Difference]: Start difference. First operand has 808 places, 886 transitions, 2578 flow. Second operand 7 states and 5369 transitions. [2022-07-13 22:06:02,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 900 transitions, 2739 flow [2022-07-13 22:06:02,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 900 transitions, 2735 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:06:02,414 INFO L242 Difference]: Finished difference. Result has 818 places, 888 transitions, 2599 flow [2022-07-13 22:06:02,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2599, PETRI_PLACES=818, PETRI_TRANSITIONS=888} [2022-07-13 22:06:02,416 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 62 predicate places. [2022-07-13 22:06:02,416 INFO L495 AbstractCegarLoop]: Abstraction has has 818 places, 888 transitions, 2599 flow [2022-07-13 22:06:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 764.5) internal successors, (4587), 6 states have internal predecessors, (4587), 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) [2022-07-13 22:06:02,417 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:02,417 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:02,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:06:02,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash 703092806, now seen corresponding path program 1 times [2022-07-13 22:06:02,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:02,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253893607] [2022-07-13 22:06:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:02,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:06:02,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253893607] [2022-07-13 22:06:02,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253893607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:02,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:02,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:06:02,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773954336] [2022-07-13 22:06:02,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:02,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:06:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:02,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:06:02,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:06:02,572 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 851 [2022-07-13 22:06:02,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 888 transitions, 2599 flow. Second operand has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 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) [2022-07-13 22:06:02,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:02,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 851 [2022-07-13 22:06:02,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:15,966 INFO L129 PetriNetUnfolder]: 8585/49260 cut-off events. [2022-07-13 22:06:15,967 INFO L130 PetriNetUnfolder]: For 40554/56446 co-relation queries the response was YES. [2022-07-13 22:06:17,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78648 conditions, 49260 events. 8585/49260 cut-off events. For 40554/56446 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 706252 event pairs, 3032 based on Foata normal form. 617/46700 useless extension candidates. Maximal degree in co-relation 78615. Up to 4529 conditions per place. [2022-07-13 22:06:17,251 INFO L132 encePairwiseOnDemand]: 838/851 looper letters, 212 selfloop transitions, 21 changer transitions 4/1034 dead transitions. [2022-07-13 22:06:17,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1034 transitions, 3688 flow [2022-07-13 22:06:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:06:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:06:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5432 transitions. [2022-07-13 22:06:17,256 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9118683901292597 [2022-07-13 22:06:17,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5432 transitions. [2022-07-13 22:06:17,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5432 transitions. [2022-07-13 22:06:17,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:17,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5432 transitions. [2022-07-13 22:06:17,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 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) [2022-07-13 22:06:17,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 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) [2022-07-13 22:06:17,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 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) [2022-07-13 22:06:17,272 INFO L186 Difference]: Start difference. First operand has 818 places, 888 transitions, 2599 flow. Second operand 7 states and 5432 transitions. [2022-07-13 22:06:17,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1034 transitions, 3688 flow [2022-07-13 22:06:17,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 1034 transitions, 3683 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:17,487 INFO L242 Difference]: Finished difference. Result has 824 places, 908 transitions, 2857 flow [2022-07-13 22:06:17,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2857, PETRI_PLACES=824, PETRI_TRANSITIONS=908} [2022-07-13 22:06:17,489 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 68 predicate places. [2022-07-13 22:06:17,489 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 908 transitions, 2857 flow [2022-07-13 22:06:17,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 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) [2022-07-13 22:06:17,490 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:17,490 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:17,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:06:17,490 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash 528390626, now seen corresponding path program 2 times [2022-07-13 22:06:17,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:17,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798290179] [2022-07-13 22:06:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:06:17,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:17,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798290179] [2022-07-13 22:06:17,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798290179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:17,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:17,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:06:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846238198] [2022-07-13 22:06:17,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:17,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:06:17,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:17,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:06:17,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:06:17,643 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 851 [2022-07-13 22:06:17,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 908 transitions, 2857 flow. Second operand has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 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) [2022-07-13 22:06:17,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:17,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 851 [2022-07-13 22:06:17,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:32,372 INFO L129 PetriNetUnfolder]: 9390/56262 cut-off events. [2022-07-13 22:06:32,372 INFO L130 PetriNetUnfolder]: For 53739/62951 co-relation queries the response was YES. [2022-07-13 22:06:33,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91328 conditions, 56262 events. 9390/56262 cut-off events. For 53739/62951 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 832646 event pairs, 4757 based on Foata normal form. 297/53561 useless extension candidates. Maximal degree in co-relation 91293. Up to 8166 conditions per place. [2022-07-13 22:06:34,110 INFO L132 encePairwiseOnDemand]: 835/851 looper letters, 195 selfloop transitions, 35 changer transitions 4/1031 dead transitions. [2022-07-13 22:06:34,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1031 transitions, 3784 flow [2022-07-13 22:06:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:06:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:06:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4666 transitions. [2022-07-13 22:06:34,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9138268703486094 [2022-07-13 22:06:34,114 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4666 transitions. [2022-07-13 22:06:34,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4666 transitions. [2022-07-13 22:06:34,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:34,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4666 transitions. [2022-07-13 22:06:34,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 777.6666666666666) internal successors, (4666), 6 states have internal predecessors, (4666), 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) [2022-07-13 22:06:34,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 851.0) internal successors, (5957), 7 states have internal predecessors, (5957), 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) [2022-07-13 22:06:34,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 851.0) internal successors, (5957), 7 states have internal predecessors, (5957), 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) [2022-07-13 22:06:34,123 INFO L186 Difference]: Start difference. First operand has 824 places, 908 transitions, 2857 flow. Second operand 6 states and 4666 transitions. [2022-07-13 22:06:34,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 1031 transitions, 3784 flow [2022-07-13 22:06:34,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 1031 transitions, 3764 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-13 22:06:34,376 INFO L242 Difference]: Finished difference. Result has 833 places, 931 transitions, 3162 flow [2022-07-13 22:06:34,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3162, PETRI_PLACES=833, PETRI_TRANSITIONS=931} [2022-07-13 22:06:34,377 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 77 predicate places. [2022-07-13 22:06:34,378 INFO L495 AbstractCegarLoop]: Abstraction has has 833 places, 931 transitions, 3162 flow [2022-07-13 22:06:34,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 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) [2022-07-13 22:06:34,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:34,379 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:34,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:06:34,379 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash -779960328, now seen corresponding path program 3 times [2022-07-13 22:06:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:34,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929989083] [2022-07-13 22:06:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:06:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:34,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929989083] [2022-07-13 22:06:34,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929989083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:34,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:34,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:06:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395468708] [2022-07-13 22:06:34,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:34,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:06:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:34,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:06:34,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:06:34,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 851 [2022-07-13 22:06:34,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 931 transitions, 3162 flow. Second operand has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 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) [2022-07-13 22:06:34,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:34,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 851 [2022-07-13 22:06:34,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand