./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:29:12,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:29:12,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:29:12,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:29:12,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:29:12,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:29:12,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:29:12,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:29:12,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:29:12,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:29:12,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:29:12,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:29:12,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:29:12,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:29:12,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:29:12,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:29:12,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:29:12,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:29:12,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:29:12,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:29:12,544 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:29:12,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:29:12,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:29:12,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:29:12,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:29:12,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:29:12,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:29:12,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:29:12,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:29:12,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:29:12,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:29:12,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:29:12,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:29:12,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:29:12,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:29:12,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:29:12,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:29:12,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:29:12,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:29:12,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:29:12,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:29:12,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:29:12,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:29:12,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:29:12,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:29:12,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:29:12,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:29:12,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:29:12,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:29:12,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:29:12,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:29:12,600 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:29:12,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:29:12,601 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:29:12,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:29:12,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:29:12,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:29:12,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:29:12,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:29:12,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:29:12,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:29:12,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:29:12,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:29:12,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:29:12,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:29:12,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:29:12,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:29:12,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:29:12,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:29:12,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:29:12,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:29:12,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:29:12,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:29:12,606 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:29:12,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:29:12,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:29:12,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-07-12 10:29:12,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:29:12,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:29:12,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:29:12,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:29:12,854 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:29:12,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-07-12 10:29:12,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc894f7e/641f15568d5d4f79885db3e134618439/FLAG5b3c2ec5e [2022-07-12 10:29:13,292 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:29:13,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-07-12 10:29:13,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc894f7e/641f15568d5d4f79885db3e134618439/FLAG5b3c2ec5e [2022-07-12 10:29:13,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc894f7e/641f15568d5d4f79885db3e134618439 [2022-07-12 10:29:13,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:29:13,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:29:13,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:29:13,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:29:13,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:29:13,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed782fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13, skipping insertion in model container [2022-07-12 10:29:13,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:29:13,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:29:13,511 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/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-07-12 10:29:13,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:29:13,527 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:29:13,552 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/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-07-12 10:29:13,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:29:13,569 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:29:13,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13 WrapperNode [2022-07-12 10:29:13,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:29:13,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:29:13,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:29:13,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:29:13,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,639 INFO L137 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 362 [2022-07-12 10:29:13,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:29:13,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:29:13,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:29:13,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:29:13,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:29:13,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:29:13,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:29:13,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:29:13,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (1/1) ... [2022-07-12 10:29:13,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:29:13,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:29:13,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:29:13,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:29:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:29:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:29:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:29:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:29:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:29:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:29:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:29:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:29:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:29:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:29:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:29:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:29:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:29:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:29:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:29:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:29:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:29:13,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:29:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:29:13,788 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:29:13,886 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:29:13,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:29:14,375 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:29:14,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:29:14,517 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-12 10:29:14,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:29:14 BoogieIcfgContainer [2022-07-12 10:29:14,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:29:14,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:29:14,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:29:14,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:29:14,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:29:13" (1/3) ... [2022-07-12 10:29:14,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6b4398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:29:14, skipping insertion in model container [2022-07-12 10:29:14,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:29:13" (2/3) ... [2022-07-12 10:29:14,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6b4398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:29:14, skipping insertion in model container [2022-07-12 10:29:14,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:29:14" (3/3) ... [2022-07-12 10:29:14,528 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-07-12 10:29:14,533 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:29:14,542 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:29:14,542 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:29:14,543 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:29:14,636 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:29:14,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 327 places, 352 transitions, 728 flow [2022-07-12 10:29:14,806 INFO L129 PetriNetUnfolder]: 35/349 cut-off events. [2022-07-12 10:29:14,806 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:29:14,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 349 events. 35/349 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 669 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 280. Up to 2 conditions per place. [2022-07-12 10:29:14,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 352 transitions, 728 flow [2022-07-12 10:29:14,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 338 transitions, 694 flow [2022-07-12 10:29:14,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:29:14,839 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@7ebbe1f7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@46fe4757 [2022-07-12 10:29:14,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:29:14,909 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-07-12 10:29:14,909 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:29:14,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:14,911 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] [2022-07-12 10:29:14,912 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)] === [2022-07-12 10:29:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1578266711, now seen corresponding path program 1 times [2022-07-12 10:29:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:14,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468649006] [2022-07-12 10:29:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:15,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468649006] [2022-07-12 10:29:15,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468649006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:15,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:15,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:29:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569385789] [2022-07-12 10:29:15,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:15,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:29:15,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:29:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:29:15,302 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 352 [2022-07-12 10:29:15,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 338 transitions, 694 flow. Second operand has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:15,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:15,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 352 [2022-07-12 10:29:15,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:15,466 INFO L129 PetriNetUnfolder]: 47/520 cut-off events. [2022-07-12 10:29:15,467 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-12 10:29:15,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 520 events. 47/520 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1743 event pairs, 15 based on Foata normal form. 50/514 useless extension candidates. Maximal degree in co-relation 351. Up to 37 conditions per place. [2022-07-12 10:29:15,476 INFO L132 encePairwiseOnDemand]: 333/352 looper letters, 9 selfloop transitions, 0 changer transitions 9/319 dead transitions. [2022-07-12 10:29:15,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 319 transitions, 674 flow [2022-07-12 10:29:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:29:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:29:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 674 transitions. [2022-07-12 10:29:15,495 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9573863636363636 [2022-07-12 10:29:15,496 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 674 transitions. [2022-07-12 10:29:15,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 674 transitions. [2022-07-12 10:29:15,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:15,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 674 transitions. [2022-07-12 10:29:15,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:15,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:15,520 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:15,522 INFO L186 Difference]: Start difference. First operand has 313 places, 338 transitions, 694 flow. Second operand 2 states and 674 transitions. [2022-07-12 10:29:15,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 319 transitions, 674 flow [2022-07-12 10:29:15,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 319 transitions, 662 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:29:15,548 INFO L242 Difference]: Finished difference. Result has 308 places, 310 transitions, 626 flow [2022-07-12 10:29:15,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=626, PETRI_PLACES=308, PETRI_TRANSITIONS=310} [2022-07-12 10:29:15,556 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, -5 predicate places. [2022-07-12 10:29:15,556 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 310 transitions, 626 flow [2022-07-12 10:29:15,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:15,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:15,558 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] [2022-07-12 10:29:15,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:29:15,559 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)] === [2022-07-12 10:29:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:15,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1761397245, now seen corresponding path program 1 times [2022-07-12 10:29:15,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:15,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014782247] [2022-07-12 10:29:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014782247] [2022-07-12 10:29:15,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014782247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:15,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:15,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:29:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38221544] [2022-07-12 10:29:15,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:15,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:29:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:29:15,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:29:15,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 352 [2022-07-12 10:29:15,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 310 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:15,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:15,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 352 [2022-07-12 10:29:15,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:16,209 INFO L129 PetriNetUnfolder]: 114/992 cut-off events. [2022-07-12 10:29:16,210 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-12 10:29:16,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 992 events. 114/992 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4812 event pairs, 6 based on Foata normal form. 1/879 useless extension candidates. Maximal degree in co-relation 1127. Up to 52 conditions per place. [2022-07-12 10:29:16,225 INFO L132 encePairwiseOnDemand]: 344/352 looper letters, 59 selfloop transitions, 6 changer transitions 4/332 dead transitions. [2022-07-12 10:29:16,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 332 transitions, 817 flow [2022-07-12 10:29:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:29:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:29:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1726 transitions. [2022-07-12 10:29:16,241 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172348484848485 [2022-07-12 10:29:16,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1726 transitions. [2022-07-12 10:29:16,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1726 transitions. [2022-07-12 10:29:16,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:16,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1726 transitions. [2022-07-12 10:29:16,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.6666666666667) internal successors, (1726), 6 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:16,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:16,253 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:16,253 INFO L186 Difference]: Start difference. First operand has 308 places, 310 transitions, 626 flow. Second operand 6 states and 1726 transitions. [2022-07-12 10:29:16,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 332 transitions, 817 flow [2022-07-12 10:29:16,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 332 transitions, 817 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:29:16,263 INFO L242 Difference]: Finished difference. Result has 307 places, 314 transitions, 662 flow [2022-07-12 10:29:16,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=307, PETRI_TRANSITIONS=314} [2022-07-12 10:29:16,265 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, -6 predicate places. [2022-07-12 10:29:16,265 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 314 transitions, 662 flow [2022-07-12 10:29:16,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:16,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:16,266 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] [2022-07-12 10:29:16,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:29:16,267 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)] === [2022-07-12 10:29:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 497075190, now seen corresponding path program 1 times [2022-07-12 10:29:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:16,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048731681] [2022-07-12 10:29:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:16,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:16,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048731681] [2022-07-12 10:29:16,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048731681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:16,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:16,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:29:16,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895947465] [2022-07-12 10:29:16,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:16,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:29:16,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:16,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:29:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:29:16,460 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 352 [2022-07-12 10:29:16,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 314 transitions, 662 flow. Second operand has 7 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:16,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:16,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 352 [2022-07-12 10:29:16,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:18,307 INFO L129 PetriNetUnfolder]: 1663/7948 cut-off events. [2022-07-12 10:29:18,309 INFO L130 PetriNetUnfolder]: For 804/844 co-relation queries the response was YES. [2022-07-12 10:29:18,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10928 conditions, 7948 events. 1663/7948 cut-off events. For 804/844 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 76266 event pairs, 523 based on Foata normal form. 0/6672 useless extension candidates. Maximal degree in co-relation 10921. Up to 716 conditions per place. [2022-07-12 10:29:18,424 INFO L132 encePairwiseOnDemand]: 336/352 looper letters, 177 selfloop transitions, 25 changer transitions 0/453 dead transitions. [2022-07-12 10:29:18,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 453 transitions, 1451 flow [2022-07-12 10:29:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:29:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:29:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4280 transitions. [2022-07-12 10:29:18,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8106060606060606 [2022-07-12 10:29:18,436 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4280 transitions. [2022-07-12 10:29:18,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4280 transitions. [2022-07-12 10:29:18,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:18,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4280 transitions. [2022-07-12 10:29:18,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 285.3333333333333) internal successors, (4280), 15 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:18,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:18,462 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:18,462 INFO L186 Difference]: Start difference. First operand has 307 places, 314 transitions, 662 flow. Second operand 15 states and 4280 transitions. [2022-07-12 10:29:18,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 453 transitions, 1451 flow [2022-07-12 10:29:18,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 453 transitions, 1447 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:29:18,473 INFO L242 Difference]: Finished difference. Result has 322 places, 334 transitions, 792 flow [2022-07-12 10:29:18,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=792, PETRI_PLACES=322, PETRI_TRANSITIONS=334} [2022-07-12 10:29:18,476 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 9 predicate places. [2022-07-12 10:29:18,476 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 334 transitions, 792 flow [2022-07-12 10:29:18,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:18,478 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:18,478 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] [2022-07-12 10:29:18,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:29:18,479 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)] === [2022-07-12 10:29:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash -294244265, now seen corresponding path program 1 times [2022-07-12 10:29:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526955385] [2022-07-12 10:29:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:18,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:18,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526955385] [2022-07-12 10:29:18,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526955385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:18,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:18,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:29:18,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751970215] [2022-07-12 10:29:18,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:18,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:29:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:29:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:29:18,764 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 352 [2022-07-12 10:29:18,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 334 transitions, 792 flow. Second operand has 10 states, 10 states have (on average 236.0) internal successors, (2360), 10 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:18,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:18,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 352 [2022-07-12 10:29:18,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:21,888 INFO L129 PetriNetUnfolder]: 3707/15239 cut-off events. [2022-07-12 10:29:21,888 INFO L130 PetriNetUnfolder]: For 3372/3444 co-relation queries the response was YES. [2022-07-12 10:29:21,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21735 conditions, 15239 events. 3707/15239 cut-off events. For 3372/3444 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 165015 event pairs, 2020 based on Foata normal form. 72/13141 useless extension candidates. Maximal degree in co-relation 21724. Up to 1831 conditions per place. [2022-07-12 10:29:22,032 INFO L132 encePairwiseOnDemand]: 333/352 looper letters, 253 selfloop transitions, 34 changer transitions 0/508 dead transitions. [2022-07-12 10:29:22,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 508 transitions, 1813 flow [2022-07-12 10:29:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:29:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:29:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5796 transitions. [2022-07-12 10:29:22,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6860795454545454 [2022-07-12 10:29:22,050 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5796 transitions. [2022-07-12 10:29:22,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5796 transitions. [2022-07-12 10:29:22,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:22,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5796 transitions. [2022-07-12 10:29:22,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 241.5) internal successors, (5796), 24 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:22,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 352.0) internal successors, (8800), 25 states have internal predecessors, (8800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:22,083 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 352.0) internal successors, (8800), 25 states have internal predecessors, (8800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:22,084 INFO L186 Difference]: Start difference. First operand has 322 places, 334 transitions, 792 flow. Second operand 24 states and 5796 transitions. [2022-07-12 10:29:22,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 508 transitions, 1813 flow [2022-07-12 10:29:22,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 508 transitions, 1813 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:29:22,104 INFO L242 Difference]: Finished difference. Result has 348 places, 350 transitions, 917 flow [2022-07-12 10:29:22,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=917, PETRI_PLACES=348, PETRI_TRANSITIONS=350} [2022-07-12 10:29:22,107 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 35 predicate places. [2022-07-12 10:29:22,107 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 350 transitions, 917 flow [2022-07-12 10:29:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 236.0) internal successors, (2360), 10 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:22,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:22,108 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] [2022-07-12 10:29:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:29:22,109 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)] === [2022-07-12 10:29:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash -447404608, now seen corresponding path program 1 times [2022-07-12 10:29:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:22,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714554896] [2022-07-12 10:29:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:22,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:22,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714554896] [2022-07-12 10:29:22,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714554896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:22,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:29:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448203672] [2022-07-12 10:29:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:29:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:29:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:29:22,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 352 [2022-07-12 10:29:22,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 350 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 236.9) internal successors, (2369), 10 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:22,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:22,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 352 [2022-07-12 10:29:22,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:24,040 INFO L129 PetriNetUnfolder]: 2642/8358 cut-off events. [2022-07-12 10:29:24,041 INFO L130 PetriNetUnfolder]: For 5187/5241 co-relation queries the response was YES. [2022-07-12 10:29:24,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14710 conditions, 8358 events. 2642/8358 cut-off events. For 5187/5241 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 74875 event pairs, 1302 based on Foata normal form. 54/7327 useless extension candidates. Maximal degree in co-relation 14695. Up to 1431 conditions per place. [2022-07-12 10:29:24,136 INFO L132 encePairwiseOnDemand]: 332/352 looper letters, 148 selfloop transitions, 14 changer transitions 115/497 dead transitions. [2022-07-12 10:29:24,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 497 transitions, 1874 flow [2022-07-12 10:29:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:29:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:29:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6266 transitions. [2022-07-12 10:29:24,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6846590909090909 [2022-07-12 10:29:24,152 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6266 transitions. [2022-07-12 10:29:24,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6266 transitions. [2022-07-12 10:29:24,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:24,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6266 transitions. [2022-07-12 10:29:24,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 241.0) internal successors, (6266), 26 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:24,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 352.0) internal successors, (9504), 27 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:24,203 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 352.0) internal successors, (9504), 27 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:24,204 INFO L186 Difference]: Start difference. First operand has 348 places, 350 transitions, 917 flow. Second operand 26 states and 6266 transitions. [2022-07-12 10:29:24,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 497 transitions, 1874 flow [2022-07-12 10:29:24,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 497 transitions, 1856 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:29:24,219 INFO L242 Difference]: Finished difference. Result has 373 places, 324 transitions, 806 flow [2022-07-12 10:29:24,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=806, PETRI_PLACES=373, PETRI_TRANSITIONS=324} [2022-07-12 10:29:24,222 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 60 predicate places. [2022-07-12 10:29:24,223 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 324 transitions, 806 flow [2022-07-12 10:29:24,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 236.9) internal successors, (2369), 10 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:24,223 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:24,224 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] [2022-07-12 10:29:24,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:29:24,224 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)] === [2022-07-12 10:29:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -869851955, now seen corresponding path program 1 times [2022-07-12 10:29:24,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:24,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057478393] [2022-07-12 10:29:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:24,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:24,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057478393] [2022-07-12 10:29:24,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057478393] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:24,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512199575] [2022-07-12 10:29:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:24,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:29:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:29:24,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:29:24,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:29:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:24,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:29:24,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:29:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:24,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:29:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:25,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512199575] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:25,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:29:25,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-12 10:29:25,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90320383] [2022-07-12 10:29:25,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:29:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:29:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:29:25,199 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 352 [2022-07-12 10:29:25,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 324 transitions, 806 flow. Second operand has 9 states, 9 states have (on average 266.6666666666667) internal successors, (2400), 9 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:25,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:25,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 352 [2022-07-12 10:29:25,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:28,901 INFO L129 PetriNetUnfolder]: 9348/25969 cut-off events. [2022-07-12 10:29:28,901 INFO L130 PetriNetUnfolder]: For 15478/15478 co-relation queries the response was YES. [2022-07-12 10:29:29,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47407 conditions, 25969 events. 9348/25969 cut-off events. For 15478/15478 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 284242 event pairs, 1582 based on Foata normal form. 20/23394 useless extension candidates. Maximal degree in co-relation 47385. Up to 3504 conditions per place. [2022-07-12 10:29:29,344 INFO L132 encePairwiseOnDemand]: 341/352 looper letters, 154 selfloop transitions, 19 changer transitions 0/416 dead transitions. [2022-07-12 10:29:29,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 416 transitions, 1491 flow [2022-07-12 10:29:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:29:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:29:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3029 transitions. [2022-07-12 10:29:29,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7822830578512396 [2022-07-12 10:29:29,351 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3029 transitions. [2022-07-12 10:29:29,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3029 transitions. [2022-07-12 10:29:29,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:29,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3029 transitions. [2022-07-12 10:29:29,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 275.3636363636364) internal successors, (3029), 11 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:29,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:29,364 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:29,364 INFO L186 Difference]: Start difference. First operand has 373 places, 324 transitions, 806 flow. Second operand 11 states and 3029 transitions. [2022-07-12 10:29:29,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 416 transitions, 1491 flow [2022-07-12 10:29:29,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 416 transitions, 1367 flow, removed 52 selfloop flow, removed 20 redundant places. [2022-07-12 10:29:29,415 INFO L242 Difference]: Finished difference. Result has 329 places, 337 transitions, 868 flow [2022-07-12 10:29:29,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=868, PETRI_PLACES=329, PETRI_TRANSITIONS=337} [2022-07-12 10:29:29,419 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 16 predicate places. [2022-07-12 10:29:29,419 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 337 transitions, 868 flow [2022-07-12 10:29:29,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 266.6666666666667) internal successors, (2400), 9 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:29,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:29,420 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] [2022-07-12 10:29:29,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:29:29,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 10:29:29,644 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)] === [2022-07-12 10:29:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash -372241929, now seen corresponding path program 2 times [2022-07-12 10:29:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:29,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880268956] [2022-07-12 10:29:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:29,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880268956] [2022-07-12 10:29:29,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880268956] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:29,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384903609] [2022-07-12 10:29:29,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:29:29,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:29:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:29:29,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:29:29,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:29:29,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:29:29,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:29:29,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:29:29,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:29:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:29:30,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:29:30,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384903609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:30,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:29:30,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-12 10:29:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169273554] [2022-07-12 10:29:30,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:30,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:29:30,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:30,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:29:30,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:29:30,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 352 [2022-07-12 10:29:30,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 337 transitions, 868 flow. Second operand has 6 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:30,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:30,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 352 [2022-07-12 10:29:30,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:32,268 INFO L129 PetriNetUnfolder]: 3916/13051 cut-off events. [2022-07-12 10:29:32,268 INFO L130 PetriNetUnfolder]: For 4024/4194 co-relation queries the response was YES. [2022-07-12 10:29:32,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21477 conditions, 13051 events. 3916/13051 cut-off events. For 4024/4194 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 131882 event pairs, 652 based on Foata normal form. 258/11450 useless extension candidates. Maximal degree in co-relation 21462. Up to 3580 conditions per place. [2022-07-12 10:29:32,373 INFO L132 encePairwiseOnDemand]: 343/352 looper letters, 79 selfloop transitions, 16 changer transitions 0/352 dead transitions. [2022-07-12 10:29:32,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 352 transitions, 1120 flow [2022-07-12 10:29:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:29:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:29:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2146 transitions. [2022-07-12 10:29:32,379 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620738636363636 [2022-07-12 10:29:32,379 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2146 transitions. [2022-07-12 10:29:32,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2146 transitions. [2022-07-12 10:29:32,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:32,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2146 transitions. [2022-07-12 10:29:32,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 268.25) internal successors, (2146), 8 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:32,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:32,388 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:32,388 INFO L186 Difference]: Start difference. First operand has 329 places, 337 transitions, 868 flow. Second operand 8 states and 2146 transitions. [2022-07-12 10:29:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 352 transitions, 1120 flow [2022-07-12 10:29:32,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 352 transitions, 1113 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-12 10:29:32,402 INFO L242 Difference]: Finished difference. Result has 335 places, 340 transitions, 938 flow [2022-07-12 10:29:32,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=938, PETRI_PLACES=335, PETRI_TRANSITIONS=340} [2022-07-12 10:29:32,404 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 22 predicate places. [2022-07-12 10:29:32,404 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 340 transitions, 938 flow [2022-07-12 10:29:32,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:32,405 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:32,405 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] [2022-07-12 10:29:32,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:29:32,629 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,SelfDestructingSolverStorable6 [2022-07-12 10:29:32,630 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)] === [2022-07-12 10:29:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1402086121, now seen corresponding path program 1 times [2022-07-12 10:29:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141395924] [2022-07-12 10:29:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:32,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:32,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141395924] [2022-07-12 10:29:32,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141395924] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:32,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462220370] [2022-07-12 10:29:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:32,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:29:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:29:32,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:29:32,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:29:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:32,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:29:32,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:29:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:33,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:29:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:33,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462220370] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:33,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:29:33,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-12 10:29:33,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038039391] [2022-07-12 10:29:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:33,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:29:33,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:29:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:29:33,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 352 [2022-07-12 10:29:33,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 340 transitions, 938 flow. Second operand has 7 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:33,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:33,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 352 [2022-07-12 10:29:33,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:34,800 INFO L129 PetriNetUnfolder]: 2277/9346 cut-off events. [2022-07-12 10:29:34,800 INFO L130 PetriNetUnfolder]: For 6244/7031 co-relation queries the response was YES. [2022-07-12 10:29:34,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15997 conditions, 9346 events. 2277/9346 cut-off events. For 6244/7031 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 93280 event pairs, 473 based on Foata normal form. 349/8508 useless extension candidates. Maximal degree in co-relation 15980. Up to 1940 conditions per place. [2022-07-12 10:29:34,909 INFO L132 encePairwiseOnDemand]: 344/352 looper letters, 85 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2022-07-12 10:29:34,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 356 transitions, 1220 flow [2022-07-12 10:29:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:29:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:29:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1979 transitions. [2022-07-12 10:29:34,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8031655844155844 [2022-07-12 10:29:34,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1979 transitions. [2022-07-12 10:29:34,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1979 transitions. [2022-07-12 10:29:34,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:34,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1979 transitions. [2022-07-12 10:29:34,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.7142857142857) internal successors, (1979), 7 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:34,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:34,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:34,924 INFO L186 Difference]: Start difference. First operand has 335 places, 340 transitions, 938 flow. Second operand 7 states and 1979 transitions. [2022-07-12 10:29:34,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 356 transitions, 1220 flow [2022-07-12 10:29:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 356 transitions, 1189 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-12 10:29:34,942 INFO L242 Difference]: Finished difference. Result has 338 places, 341 transitions, 945 flow [2022-07-12 10:29:34,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=945, PETRI_PLACES=338, PETRI_TRANSITIONS=341} [2022-07-12 10:29:34,943 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 25 predicate places. [2022-07-12 10:29:34,943 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 341 transitions, 945 flow [2022-07-12 10:29:34,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:34,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:34,944 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] [2022-07-12 10:29:34,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:29:35,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:29:35,169 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)] === [2022-07-12 10:29:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1719808266, now seen corresponding path program 1 times [2022-07-12 10:29:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:35,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862210992] [2022-07-12 10:29:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:29:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:35,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862210992] [2022-07-12 10:29:35,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862210992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:35,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:35,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:29:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134627120] [2022-07-12 10:29:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:35,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:29:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:29:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:29:35,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 352 [2022-07-12 10:29:35,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 341 transitions, 945 flow. Second operand has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:35,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:35,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 352 [2022-07-12 10:29:35,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:36,039 INFO L129 PetriNetUnfolder]: 1236/4419 cut-off events. [2022-07-12 10:29:36,040 INFO L130 PetriNetUnfolder]: For 1451/1466 co-relation queries the response was YES. [2022-07-12 10:29:36,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7679 conditions, 4419 events. 1236/4419 cut-off events. For 1451/1466 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 37597 event pairs, 323 based on Foata normal form. 7/3957 useless extension candidates. Maximal degree in co-relation 7660. Up to 1073 conditions per place. [2022-07-12 10:29:36,096 INFO L132 encePairwiseOnDemand]: 347/352 looper letters, 47 selfloop transitions, 4 changer transitions 4/373 dead transitions. [2022-07-12 10:29:36,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 373 transitions, 1175 flow [2022-07-12 10:29:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:29:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:29:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1918 transitions. [2022-07-12 10:29:36,101 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9081439393939394 [2022-07-12 10:29:36,101 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1918 transitions. [2022-07-12 10:29:36,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1918 transitions. [2022-07-12 10:29:36,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:36,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1918 transitions. [2022-07-12 10:29:36,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.6666666666667) internal successors, (1918), 6 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:36,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:36,110 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:36,111 INFO L186 Difference]: Start difference. First operand has 338 places, 341 transitions, 945 flow. Second operand 6 states and 1918 transitions. [2022-07-12 10:29:36,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 373 transitions, 1175 flow [2022-07-12 10:29:36,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 373 transitions, 1159 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:29:36,119 INFO L242 Difference]: Finished difference. Result has 341 places, 344 transitions, 958 flow [2022-07-12 10:29:36,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=341, PETRI_TRANSITIONS=344} [2022-07-12 10:29:36,121 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 28 predicate places. [2022-07-12 10:29:36,121 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 344 transitions, 958 flow [2022-07-12 10:29:36,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:36,122 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:36,122 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] [2022-07-12 10:29:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:29:36,122 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)] === [2022-07-12 10:29:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1562985059, now seen corresponding path program 1 times [2022-07-12 10:29:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:36,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293681082] [2022-07-12 10:29:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:36,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:36,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293681082] [2022-07-12 10:29:36,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293681082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:36,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:36,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:29:36,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43805680] [2022-07-12 10:29:36,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:36,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:29:36,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:36,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:29:36,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:29:36,177 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 352 [2022-07-12 10:29:36,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 344 transitions, 958 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:36,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:36,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 352 [2022-07-12 10:29:36,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:37,080 INFO L129 PetriNetUnfolder]: 1289/5055 cut-off events. [2022-07-12 10:29:37,080 INFO L130 PetriNetUnfolder]: For 1996/2011 co-relation queries the response was YES. [2022-07-12 10:29:37,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9236 conditions, 5055 events. 1289/5055 cut-off events. For 1996/2011 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 45650 event pairs, 406 based on Foata normal form. 50/4626 useless extension candidates. Maximal degree in co-relation 9215. Up to 1181 conditions per place. [2022-07-12 10:29:37,156 INFO L132 encePairwiseOnDemand]: 348/352 looper letters, 43 selfloop transitions, 3 changer transitions 3/368 dead transitions. [2022-07-12 10:29:37,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 368 transitions, 1154 flow [2022-07-12 10:29:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:29:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:29:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1597 transitions. [2022-07-12 10:29:37,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9073863636363636 [2022-07-12 10:29:37,160 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1597 transitions. [2022-07-12 10:29:37,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1597 transitions. [2022-07-12 10:29:37,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:37,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1597 transitions. [2022-07-12 10:29:37,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.4) internal successors, (1597), 5 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:37,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:37,168 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:37,168 INFO L186 Difference]: Start difference. First operand has 341 places, 344 transitions, 958 flow. Second operand 5 states and 1597 transitions. [2022-07-12 10:29:37,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 368 transitions, 1154 flow [2022-07-12 10:29:37,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 368 transitions, 1154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:29:37,185 INFO L242 Difference]: Finished difference. Result has 348 places, 346 transitions, 983 flow [2022-07-12 10:29:37,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=983, PETRI_PLACES=348, PETRI_TRANSITIONS=346} [2022-07-12 10:29:37,187 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 35 predicate places. [2022-07-12 10:29:37,187 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 346 transitions, 983 flow [2022-07-12 10:29:37,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:37,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:37,188 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] [2022-07-12 10:29:37,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:29:37,188 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)] === [2022-07-12 10:29:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1110678838, now seen corresponding path program 1 times [2022-07-12 10:29:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:37,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763806127] [2022-07-12 10:29:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:29:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:37,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763806127] [2022-07-12 10:29:37,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763806127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:37,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:37,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:29:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640903161] [2022-07-12 10:29:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:37,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:29:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:29:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:29:37,249 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 352 [2022-07-12 10:29:37,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 346 transitions, 983 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:37,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:37,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 352 [2022-07-12 10:29:37,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:38,260 INFO L129 PetriNetUnfolder]: 1206/5197 cut-off events. [2022-07-12 10:29:38,260 INFO L130 PetriNetUnfolder]: For 2110/2121 co-relation queries the response was YES. [2022-07-12 10:29:38,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 5197 events. 1206/5197 cut-off events. For 2110/2121 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 48095 event pairs, 359 based on Foata normal form. 48/4774 useless extension candidates. Maximal degree in co-relation 9983. Up to 1165 conditions per place. [2022-07-12 10:29:38,340 INFO L132 encePairwiseOnDemand]: 348/352 looper letters, 43 selfloop transitions, 3 changer transitions 3/370 dead transitions. [2022-07-12 10:29:38,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 370 transitions, 1179 flow [2022-07-12 10:29:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:29:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:29:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1597 transitions. [2022-07-12 10:29:38,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9073863636363636 [2022-07-12 10:29:38,344 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1597 transitions. [2022-07-12 10:29:38,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1597 transitions. [2022-07-12 10:29:38,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:38,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1597 transitions. [2022-07-12 10:29:38,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.4) internal successors, (1597), 5 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:38,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:38,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:38,351 INFO L186 Difference]: Start difference. First operand has 348 places, 346 transitions, 983 flow. Second operand 5 states and 1597 transitions. [2022-07-12 10:29:38,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 370 transitions, 1179 flow [2022-07-12 10:29:38,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 370 transitions, 1179 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:29:38,380 INFO L242 Difference]: Finished difference. Result has 355 places, 348 transitions, 1008 flow [2022-07-12 10:29:38,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1008, PETRI_PLACES=355, PETRI_TRANSITIONS=348} [2022-07-12 10:29:38,381 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 42 predicate places. [2022-07-12 10:29:38,381 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 348 transitions, 1008 flow [2022-07-12 10:29:38,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:38,382 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:38,382 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] [2022-07-12 10:29:38,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:29:38,383 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)] === [2022-07-12 10:29:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1298157067, now seen corresponding path program 1 times [2022-07-12 10:29:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:38,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85666711] [2022-07-12 10:29:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:29:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:38,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85666711] [2022-07-12 10:29:38,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85666711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:38,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:38,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:29:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884580422] [2022-07-12 10:29:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:29:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:29:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:29:38,525 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 352 [2022-07-12 10:29:38,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 348 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 271.8) internal successors, (2718), 10 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:38,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:38,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 352 [2022-07-12 10:29:38,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:57,297 INFO L129 PetriNetUnfolder]: 62171/113466 cut-off events. [2022-07-12 10:29:57,297 INFO L130 PetriNetUnfolder]: For 40835/40947 co-relation queries the response was YES. [2022-07-12 10:29:58,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255919 conditions, 113466 events. 62171/113466 cut-off events. For 40835/40947 co-relation queries the response was YES. Maximal size of possible extension queue 2722. Compared 1159690 event pairs, 24333 based on Foata normal form. 456/106666 useless extension candidates. Maximal degree in co-relation 255892. Up to 43764 conditions per place. [2022-07-12 10:29:58,902 INFO L132 encePairwiseOnDemand]: 338/352 looper letters, 134 selfloop transitions, 7 changer transitions 217/618 dead transitions. [2022-07-12 10:29:58,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 618 transitions, 2482 flow [2022-07-12 10:29:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:29:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:29:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4572 transitions. [2022-07-12 10:29:58,908 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8117897727272727 [2022-07-12 10:29:58,909 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4572 transitions. [2022-07-12 10:29:58,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4572 transitions. [2022-07-12 10:29:58,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:58,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4572 transitions. [2022-07-12 10:29:58,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 285.75) internal successors, (4572), 16 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:58,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:58,925 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:29:58,925 INFO L186 Difference]: Start difference. First operand has 355 places, 348 transitions, 1008 flow. Second operand 16 states and 4572 transitions. [2022-07-12 10:29:58,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 618 transitions, 2482 flow