./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/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-?-f4b24e3 [2022-07-13 22:09:41,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:09:41,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:09:41,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:09:41,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:09:41,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:09:41,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:09:41,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:09:41,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:09:41,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:09:41,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:09:41,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:09:41,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:09:41,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:09:41,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:09:41,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:09:41,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:09:41,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:09:41,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:09:41,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:09:41,693 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:09:41,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:09:41,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:09:41,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:09:41,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:09:41,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:09:41,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:09:41,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:09:41,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:09:41,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:09:41,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:09:41,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:09:41,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:09:41,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:09:41,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:09:41,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:09:41,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:09:41,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:09:41,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:09:41,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:09:41,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:09:41,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:09:41,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:09:41,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:09:41,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:09:41,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:09:41,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:09:41,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:09:41,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:09:41,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:09:41,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:09:41,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:09:41,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:09:41,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:09:41,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:09:41,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:09:41,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:09:41,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:09:41,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:09:41,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:09:41,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:09:41,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:09:41,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:09:41,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:09:41,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:09:41,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:09:41,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:09:41,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:09:41,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:09:41,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-07-13 22:09:41,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:09:41,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:09:41,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:09:41,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:09:41,929 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:09:41,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-07-13 22:09:41,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3738187d3/90874827f1474feeac5f984dda859b18/FLAGc236faece [2022-07-13 22:09:42,351 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:09:42,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-07-13 22:09:42,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3738187d3/90874827f1474feeac5f984dda859b18/FLAGc236faece [2022-07-13 22:09:42,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3738187d3/90874827f1474feeac5f984dda859b18 [2022-07-13 22:09:42,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:09:42,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:09:42,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:09:42,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:09:42,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:09:42,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689cd796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42, skipping insertion in model container [2022-07-13 22:09:42,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:09:42,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:09:42,537 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] [2022-07-13 22:09:42,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:09:42,547 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:09:42,582 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] [2022-07-13 22:09:42,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:09:42,603 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:09:42,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42 WrapperNode [2022-07-13 22:09:42,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:09:42,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:09:42,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:09:42,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:09:42,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,663 INFO L137 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 362 [2022-07-13 22:09:42,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:09:42,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:09:42,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:09:42,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:09:42,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:09:42,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:09:42,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:09:42,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:09:42,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (1/1) ... [2022-07-13 22:09:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:09:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:09:42,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:09:42,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:09:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:09:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:09:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:09:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:09:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:09:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:09:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:09:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:09:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:09:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:09:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:09:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:09:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:09:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:09:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:09:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:09:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:09:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:09:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:09:42,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:09:42,871 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:09:42,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:09:43,272 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:09:43,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:09:43,440 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-13 22:09:43,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:09:43 BoogieIcfgContainer [2022-07-13 22:09:43,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:09:43,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:09:43,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:09:43,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:09:43,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:09:42" (1/3) ... [2022-07-13 22:09:43,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e1a8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:09:43, skipping insertion in model container [2022-07-13 22:09:43,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:09:42" (2/3) ... [2022-07-13 22:09:43,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e1a8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:09:43, skipping insertion in model container [2022-07-13 22:09:43,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:09:43" (3/3) ... [2022-07-13 22:09:43,450 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-07-13 22:09:43,454 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:09:43,460 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:09:43,460 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:09:43,460 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:09:43,537 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:09:43,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 327 places, 352 transitions, 728 flow [2022-07-13 22:09:43,728 INFO L129 PetriNetUnfolder]: 35/349 cut-off events. [2022-07-13 22:09:43,729 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:09:43,736 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. [2022-07-13 22:09:43,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 352 transitions, 728 flow [2022-07-13 22:09:43,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 338 transitions, 694 flow [2022-07-13 22:09:43,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:09:43,755 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@7c590c52, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28e0c59f [2022-07-13 22:09:43,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:09:43,818 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-07-13 22:09:43,818 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:09:43,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:43,819 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] [2022-07-13 22:09:43,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:43,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1578266711, now seen corresponding path program 1 times [2022-07-13 22:09:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:43,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364777260] [2022-07-13 22:09:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:43,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:09:44,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:44,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364777260] [2022-07-13 22:09:44,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364777260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:09:44,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:09:44,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:09:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436079975] [2022-07-13 22:09:44,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:09:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:09:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:09:44,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 352 [2022-07-13 22:09:44,090 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) [2022-07-13 22:09:44,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:44,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 352 [2022-07-13 22:09:44,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:44,192 INFO L129 PetriNetUnfolder]: 47/520 cut-off events. [2022-07-13 22:09:44,193 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-13 22:09:44,197 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. [2022-07-13 22:09:44,200 INFO L132 encePairwiseOnDemand]: 333/352 looper letters, 9 selfloop transitions, 0 changer transitions 9/319 dead transitions. [2022-07-13 22:09:44,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 319 transitions, 674 flow [2022-07-13 22:09:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:09:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:09:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 674 transitions. [2022-07-13 22:09:44,232 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9573863636363636 [2022-07-13 22:09:44,232 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 674 transitions. [2022-07-13 22:09:44,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 674 transitions. [2022-07-13 22:09:44,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:44,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 674 transitions. [2022-07-13 22:09:44,242 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) [2022-07-13 22:09:44,249 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) [2022-07-13 22:09:44,250 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) [2022-07-13 22:09:44,252 INFO L186 Difference]: Start difference. First operand has 313 places, 338 transitions, 694 flow. Second operand 2 states and 674 transitions. [2022-07-13 22:09:44,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 319 transitions, 674 flow [2022-07-13 22:09:44,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 319 transitions, 662 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:09:44,267 INFO L242 Difference]: Finished difference. Result has 308 places, 310 transitions, 626 flow [2022-07-13 22:09:44,269 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} [2022-07-13 22:09:44,275 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, -5 predicate places. [2022-07-13 22:09:44,275 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 310 transitions, 626 flow [2022-07-13 22:09:44,276 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) [2022-07-13 22:09:44,276 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:44,276 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] [2022-07-13 22:09:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:09:44,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1761397245, now seen corresponding path program 1 times [2022-07-13 22:09:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:44,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303947876] [2022-07-13 22:09:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:44,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:09:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303947876] [2022-07-13 22:09:44,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303947876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:09:44,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:09:44,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:09:44,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856175995] [2022-07-13 22:09:44,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:44,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:09:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:09:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:09:44,523 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 352 [2022-07-13 22:09:44,525 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) [2022-07-13 22:09:44,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:44,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 352 [2022-07-13 22:09:44,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:44,762 INFO L129 PetriNetUnfolder]: 114/992 cut-off events. [2022-07-13 22:09:44,762 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-13 22:09:44,769 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. [2022-07-13 22:09:44,773 INFO L132 encePairwiseOnDemand]: 344/352 looper letters, 59 selfloop transitions, 6 changer transitions 4/332 dead transitions. [2022-07-13 22:09:44,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 332 transitions, 817 flow [2022-07-13 22:09:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:09:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:09:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1726 transitions. [2022-07-13 22:09:44,777 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172348484848485 [2022-07-13 22:09:44,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1726 transitions. [2022-07-13 22:09:44,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1726 transitions. [2022-07-13 22:09:44,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:44,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1726 transitions. [2022-07-13 22:09:44,781 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) [2022-07-13 22:09:44,785 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) [2022-07-13 22:09:44,786 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) [2022-07-13 22:09:44,786 INFO L186 Difference]: Start difference. First operand has 308 places, 310 transitions, 626 flow. Second operand 6 states and 1726 transitions. [2022-07-13 22:09:44,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 332 transitions, 817 flow [2022-07-13 22:09:44,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 332 transitions, 817 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:09:44,793 INFO L242 Difference]: Finished difference. Result has 307 places, 314 transitions, 662 flow [2022-07-13 22:09:44,794 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} [2022-07-13 22:09:44,795 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, -6 predicate places. [2022-07-13 22:09:44,795 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 314 transitions, 662 flow [2022-07-13 22:09:44,796 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) [2022-07-13 22:09:44,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:44,796 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] [2022-07-13 22:09:44,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:09:44,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 497075190, now seen corresponding path program 1 times [2022-07-13 22:09:44,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:44,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668239728] [2022-07-13 22:09:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:09:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:44,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668239728] [2022-07-13 22:09:44,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668239728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:09:44,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:09:44,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:09:44,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388028869] [2022-07-13 22:09:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:44,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:09:44,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:09:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:09:44,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 352 [2022-07-13 22:09:44,987 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) [2022-07-13 22:09:44,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:44,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 352 [2022-07-13 22:09:44,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:46,309 INFO L129 PetriNetUnfolder]: 1663/7948 cut-off events. [2022-07-13 22:09:46,309 INFO L130 PetriNetUnfolder]: For 804/844 co-relation queries the response was YES. [2022-07-13 22:09:46,345 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. [2022-07-13 22:09:46,377 INFO L132 encePairwiseOnDemand]: 336/352 looper letters, 177 selfloop transitions, 25 changer transitions 0/453 dead transitions. [2022-07-13 22:09:46,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 453 transitions, 1451 flow [2022-07-13 22:09:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:09:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:09:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4280 transitions. [2022-07-13 22:09:46,384 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8106060606060606 [2022-07-13 22:09:46,384 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4280 transitions. [2022-07-13 22:09:46,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4280 transitions. [2022-07-13 22:09:46,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:46,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4280 transitions. [2022-07-13 22:09:46,392 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) [2022-07-13 22:09:46,398 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) [2022-07-13 22:09:46,400 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) [2022-07-13 22:09:46,400 INFO L186 Difference]: Start difference. First operand has 307 places, 314 transitions, 662 flow. Second operand 15 states and 4280 transitions. [2022-07-13 22:09:46,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 453 transitions, 1451 flow [2022-07-13 22:09:46,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 453 transitions, 1447 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:09:46,409 INFO L242 Difference]: Finished difference. Result has 322 places, 334 transitions, 792 flow [2022-07-13 22:09:46,409 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} [2022-07-13 22:09:46,411 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 9 predicate places. [2022-07-13 22:09:46,411 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 334 transitions, 792 flow [2022-07-13 22:09:46,413 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) [2022-07-13 22:09:46,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:46,413 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] [2022-07-13 22:09:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:09:46,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash -294244265, now seen corresponding path program 1 times [2022-07-13 22:09:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:46,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810340145] [2022-07-13 22:09:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:46,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:09:46,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:46,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810340145] [2022-07-13 22:09:46,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810340145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:09:46,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:09:46,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:09:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15683015] [2022-07-13 22:09:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:46,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:09:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:09:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:09:46,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 352 [2022-07-13 22:09:46,613 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) [2022-07-13 22:09:46,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:46,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 352 [2022-07-13 22:09:46,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:48,776 INFO L129 PetriNetUnfolder]: 3707/15239 cut-off events. [2022-07-13 22:09:48,777 INFO L130 PetriNetUnfolder]: For 3372/3444 co-relation queries the response was YES. [2022-07-13 22:09:48,828 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. [2022-07-13 22:09:48,874 INFO L132 encePairwiseOnDemand]: 333/352 looper letters, 253 selfloop transitions, 34 changer transitions 0/508 dead transitions. [2022-07-13 22:09:48,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 508 transitions, 1813 flow [2022-07-13 22:09:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:09:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:09:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5796 transitions. [2022-07-13 22:09:48,884 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6860795454545454 [2022-07-13 22:09:48,884 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5796 transitions. [2022-07-13 22:09:48,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5796 transitions. [2022-07-13 22:09:48,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:48,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5796 transitions. [2022-07-13 22:09:48,894 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) [2022-07-13 22:09:48,903 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) [2022-07-13 22:09:48,905 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) [2022-07-13 22:09:48,905 INFO L186 Difference]: Start difference. First operand has 322 places, 334 transitions, 792 flow. Second operand 24 states and 5796 transitions. [2022-07-13 22:09:48,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 508 transitions, 1813 flow [2022-07-13 22:09:48,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 508 transitions, 1813 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:09:48,914 INFO L242 Difference]: Finished difference. Result has 348 places, 350 transitions, 917 flow [2022-07-13 22:09:48,914 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} [2022-07-13 22:09:48,915 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 35 predicate places. [2022-07-13 22:09:48,915 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 350 transitions, 917 flow [2022-07-13 22:09:48,916 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) [2022-07-13 22:09:48,916 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:48,916 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] [2022-07-13 22:09:48,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:09:48,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -447404608, now seen corresponding path program 1 times [2022-07-13 22:09:48,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:48,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416155644] [2022-07-13 22:09:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:48,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:09:49,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:49,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416155644] [2022-07-13 22:09:49,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416155644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:09:49,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:09:49,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:09:49,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786401585] [2022-07-13 22:09:49,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:49,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:09:49,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:09:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:09:49,037 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 352 [2022-07-13 22:09:49,039 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) [2022-07-13 22:09:49,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:49,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 352 [2022-07-13 22:09:49,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:50,607 INFO L129 PetriNetUnfolder]: 2642/8358 cut-off events. [2022-07-13 22:09:50,608 INFO L130 PetriNetUnfolder]: For 5187/5241 co-relation queries the response was YES. [2022-07-13 22:09:50,643 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. [2022-07-13 22:09:50,682 INFO L132 encePairwiseOnDemand]: 332/352 looper letters, 148 selfloop transitions, 14 changer transitions 115/497 dead transitions. [2022-07-13 22:09:50,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 497 transitions, 1874 flow [2022-07-13 22:09:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 22:09:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-13 22:09:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6266 transitions. [2022-07-13 22:09:50,692 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6846590909090909 [2022-07-13 22:09:50,693 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6266 transitions. [2022-07-13 22:09:50,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6266 transitions. [2022-07-13 22:09:50,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:50,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6266 transitions. [2022-07-13 22:09:50,703 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) [2022-07-13 22:09:50,714 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) [2022-07-13 22:09:50,715 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) [2022-07-13 22:09:50,715 INFO L186 Difference]: Start difference. First operand has 348 places, 350 transitions, 917 flow. Second operand 26 states and 6266 transitions. [2022-07-13 22:09:50,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 497 transitions, 1874 flow [2022-07-13 22:09:50,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 497 transitions, 1856 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:09:50,724 INFO L242 Difference]: Finished difference. Result has 373 places, 324 transitions, 806 flow [2022-07-13 22:09:50,725 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} [2022-07-13 22:09:50,726 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 60 predicate places. [2022-07-13 22:09:50,726 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 324 transitions, 806 flow [2022-07-13 22:09:50,727 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) [2022-07-13 22:09:50,728 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:50,728 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] [2022-07-13 22:09:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:09:50,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -869851955, now seen corresponding path program 1 times [2022-07-13 22:09:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:50,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009300104] [2022-07-13 22:09:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009300104] [2022-07-13 22:09:50,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009300104] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:09:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555571600] [2022-07-13 22:09:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:50,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:09:50,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:09:50,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:09:51,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:09:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:51,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:09:51,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:09:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:51,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:09:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:51,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555571600] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:09:51,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:09:51,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-13 22:09:51,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341609433] [2022-07-13 22:09:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:51,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:09:51,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:09:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:09:51,592 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 352 [2022-07-13 22:09:51,594 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) [2022-07-13 22:09:51,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:51,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 352 [2022-07-13 22:09:51,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:55,017 INFO L129 PetriNetUnfolder]: 9348/25969 cut-off events. [2022-07-13 22:09:55,018 INFO L130 PetriNetUnfolder]: For 15478/15478 co-relation queries the response was YES. [2022-07-13 22:09:55,126 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. [2022-07-13 22:09:55,216 INFO L132 encePairwiseOnDemand]: 341/352 looper letters, 154 selfloop transitions, 19 changer transitions 0/416 dead transitions. [2022-07-13 22:09:55,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 416 transitions, 1491 flow [2022-07-13 22:09:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:09:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:09:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3029 transitions. [2022-07-13 22:09:55,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7822830578512396 [2022-07-13 22:09:55,221 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3029 transitions. [2022-07-13 22:09:55,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3029 transitions. [2022-07-13 22:09:55,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:55,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3029 transitions. [2022-07-13 22:09:55,226 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) [2022-07-13 22:09:55,230 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) [2022-07-13 22:09:55,231 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) [2022-07-13 22:09:55,231 INFO L186 Difference]: Start difference. First operand has 373 places, 324 transitions, 806 flow. Second operand 11 states and 3029 transitions. [2022-07-13 22:09:55,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 416 transitions, 1491 flow [2022-07-13 22:09:55,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 416 transitions, 1367 flow, removed 52 selfloop flow, removed 20 redundant places. [2022-07-13 22:09:55,269 INFO L242 Difference]: Finished difference. Result has 329 places, 337 transitions, 868 flow [2022-07-13 22:09:55,270 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} [2022-07-13 22:09:55,271 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 16 predicate places. [2022-07-13 22:09:55,271 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 337 transitions, 868 flow [2022-07-13 22:09:55,271 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) [2022-07-13 22:09:55,272 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:55,272 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] [2022-07-13 22:09:55,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:09:55,478 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 [2022-07-13 22:09:55,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash -372241929, now seen corresponding path program 2 times [2022-07-13 22:09:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:55,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275766083] [2022-07-13 22:09:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:55,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:55,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275766083] [2022-07-13 22:09:55,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275766083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:09:55,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514301787] [2022-07-13 22:09:55,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:09:55,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:09:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:09:55,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:09:55,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:09:55,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:09:55,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:09:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:09:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:09:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:09:55,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:09:55,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514301787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:09:55,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:09:55,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-13 22:09:55,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904276541] [2022-07-13 22:09:55,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:55,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:09:55,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:55,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:09:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:09:55,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 352 [2022-07-13 22:09:55,969 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) [2022-07-13 22:09:55,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:55,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 352 [2022-07-13 22:09:55,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:57,682 INFO L129 PetriNetUnfolder]: 3916/13051 cut-off events. [2022-07-13 22:09:57,683 INFO L130 PetriNetUnfolder]: For 4024/4194 co-relation queries the response was YES. [2022-07-13 22:09:57,743 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. [2022-07-13 22:09:57,790 INFO L132 encePairwiseOnDemand]: 343/352 looper letters, 79 selfloop transitions, 16 changer transitions 0/352 dead transitions. [2022-07-13 22:09:57,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 352 transitions, 1120 flow [2022-07-13 22:09:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:09:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:09:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2146 transitions. [2022-07-13 22:09:57,795 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620738636363636 [2022-07-13 22:09:57,795 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2146 transitions. [2022-07-13 22:09:57,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2146 transitions. [2022-07-13 22:09:57,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:09:57,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2146 transitions. [2022-07-13 22:09:57,799 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) [2022-07-13 22:09:57,802 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) [2022-07-13 22:09:57,803 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) [2022-07-13 22:09:57,803 INFO L186 Difference]: Start difference. First operand has 329 places, 337 transitions, 868 flow. Second operand 8 states and 2146 transitions. [2022-07-13 22:09:57,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 352 transitions, 1120 flow [2022-07-13 22:09:57,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 352 transitions, 1113 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-13 22:09:57,815 INFO L242 Difference]: Finished difference. Result has 335 places, 340 transitions, 938 flow [2022-07-13 22:09:57,815 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} [2022-07-13 22:09:57,816 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 22 predicate places. [2022-07-13 22:09:57,816 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 340 transitions, 938 flow [2022-07-13 22:09:57,816 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) [2022-07-13 22:09:57,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:09:57,817 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] [2022-07-13 22:09:57,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:09:58,031 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 [2022-07-13 22:09:58,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:09:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:09:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1402086121, now seen corresponding path program 1 times [2022-07-13 22:09:58,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:09:58,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076998793] [2022-07-13 22:09:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:58,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:09:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:09:58,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076998793] [2022-07-13 22:09:58,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076998793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:09:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164531326] [2022-07-13 22:09:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:09:58,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:09:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:09:58,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:09:58,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:09:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:09:58,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:09:58,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:09:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:58,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:09:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:09:58,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164531326] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:09:58,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:09:58,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-13 22:09:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988447725] [2022-07-13 22:09:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:09:58,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:09:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:09:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:09:58,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:09:58,509 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 352 [2022-07-13 22:09:58,511 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) [2022-07-13 22:09:58,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:09:58,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 352 [2022-07-13 22:09:58,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:59,928 INFO L129 PetriNetUnfolder]: 2277/9346 cut-off events. [2022-07-13 22:09:59,928 INFO L130 PetriNetUnfolder]: For 6244/7031 co-relation queries the response was YES. [2022-07-13 22:09:59,975 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. [2022-07-13 22:10:00,011 INFO L132 encePairwiseOnDemand]: 344/352 looper letters, 85 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2022-07-13 22:10:00,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 356 transitions, 1220 flow [2022-07-13 22:10:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:10:00,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:10:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1979 transitions. [2022-07-13 22:10:00,016 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8031655844155844 [2022-07-13 22:10:00,016 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1979 transitions. [2022-07-13 22:10:00,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1979 transitions. [2022-07-13 22:10:00,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:10:00,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1979 transitions. [2022-07-13 22:10:00,020 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) [2022-07-13 22:10:00,022 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) [2022-07-13 22:10:00,023 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) [2022-07-13 22:10:00,023 INFO L186 Difference]: Start difference. First operand has 335 places, 340 transitions, 938 flow. Second operand 7 states and 1979 transitions. [2022-07-13 22:10:00,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 356 transitions, 1220 flow [2022-07-13 22:10:00,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 356 transitions, 1189 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-13 22:10:00,035 INFO L242 Difference]: Finished difference. Result has 338 places, 341 transitions, 945 flow [2022-07-13 22:10:00,035 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} [2022-07-13 22:10:00,036 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 25 predicate places. [2022-07-13 22:10:00,036 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 341 transitions, 945 flow [2022-07-13 22:10:00,037 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) [2022-07-13 22:10:00,037 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:10:00,037 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] [2022-07-13 22:10:00,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:10:00,258 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 [2022-07-13 22:10:00,262 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:10:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:10:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1719808266, now seen corresponding path program 1 times [2022-07-13 22:10:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:10:00,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923202627] [2022-07-13 22:10:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:10:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:10:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:10:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:10:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:10:00,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923202627] [2022-07-13 22:10:00,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923202627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:10:00,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:10:00,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:10:00,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968899183] [2022-07-13 22:10:00,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:10:00,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:10:00,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:10:00,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:10:00,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:10:00,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 352 [2022-07-13 22:10:00,354 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) [2022-07-13 22:10:00,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:10:00,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 352 [2022-07-13 22:10:00,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:10:00,974 INFO L129 PetriNetUnfolder]: 1236/4419 cut-off events. [2022-07-13 22:10:00,974 INFO L130 PetriNetUnfolder]: For 1451/1466 co-relation queries the response was YES. [2022-07-13 22:10:01,093 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. [2022-07-13 22:10:01,112 INFO L132 encePairwiseOnDemand]: 347/352 looper letters, 47 selfloop transitions, 4 changer transitions 4/373 dead transitions. [2022-07-13 22:10:01,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 373 transitions, 1175 flow [2022-07-13 22:10:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:10:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:10:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1918 transitions. [2022-07-13 22:10:01,116 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9081439393939394 [2022-07-13 22:10:01,116 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1918 transitions. [2022-07-13 22:10:01,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1918 transitions. [2022-07-13 22:10:01,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:10:01,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1918 transitions. [2022-07-13 22:10:01,120 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) [2022-07-13 22:10:01,122 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) [2022-07-13 22:10:01,123 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) [2022-07-13 22:10:01,123 INFO L186 Difference]: Start difference. First operand has 338 places, 341 transitions, 945 flow. Second operand 6 states and 1918 transitions. [2022-07-13 22:10:01,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 373 transitions, 1175 flow [2022-07-13 22:10:01,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 373 transitions, 1159 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:10:01,129 INFO L242 Difference]: Finished difference. Result has 341 places, 344 transitions, 958 flow [2022-07-13 22:10:01,130 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} [2022-07-13 22:10:01,130 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 28 predicate places. [2022-07-13 22:10:01,130 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 344 transitions, 958 flow [2022-07-13 22:10:01,131 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) [2022-07-13 22:10:01,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:10:01,131 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] [2022-07-13 22:10:01,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:10:01,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:10:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:10:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1562985059, now seen corresponding path program 1 times [2022-07-13 22:10:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:10:01,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491281477] [2022-07-13 22:10:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:10:01,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:10:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:10:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:10:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:10:01,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491281477] [2022-07-13 22:10:01,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491281477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:10:01,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:10:01,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:10:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629640041] [2022-07-13 22:10:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:10:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:10:01,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:10:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:10:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:10:01,176 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 352 [2022-07-13 22:10:01,176 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) [2022-07-13 22:10:01,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:10:01,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 352 [2022-07-13 22:10:01,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:10:01,846 INFO L129 PetriNetUnfolder]: 1289/5055 cut-off events. [2022-07-13 22:10:01,846 INFO L130 PetriNetUnfolder]: For 1996/2011 co-relation queries the response was YES. [2022-07-13 22:10:01,894 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. [2022-07-13 22:10:01,915 INFO L132 encePairwiseOnDemand]: 348/352 looper letters, 43 selfloop transitions, 3 changer transitions 3/368 dead transitions. [2022-07-13 22:10:01,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 368 transitions, 1154 flow [2022-07-13 22:10:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:10:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:10:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1597 transitions. [2022-07-13 22:10:01,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9073863636363636 [2022-07-13 22:10:01,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1597 transitions. [2022-07-13 22:10:01,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1597 transitions. [2022-07-13 22:10:01,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:10:01,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1597 transitions. [2022-07-13 22:10:01,919 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) [2022-07-13 22:10:01,921 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) [2022-07-13 22:10:01,921 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) [2022-07-13 22:10:01,921 INFO L186 Difference]: Start difference. First operand has 341 places, 344 transitions, 958 flow. Second operand 5 states and 1597 transitions. [2022-07-13 22:10:01,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 368 transitions, 1154 flow [2022-07-13 22:10:01,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 368 transitions, 1154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:10:01,933 INFO L242 Difference]: Finished difference. Result has 348 places, 346 transitions, 983 flow [2022-07-13 22:10:01,933 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} [2022-07-13 22:10:01,934 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 35 predicate places. [2022-07-13 22:10:01,934 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 346 transitions, 983 flow [2022-07-13 22:10:01,934 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) [2022-07-13 22:10:01,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:10:01,935 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] [2022-07-13 22:10:01,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:10:01,935 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:10:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:10:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1110678838, now seen corresponding path program 1 times [2022-07-13 22:10:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:10:01,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549606150] [2022-07-13 22:10:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:10:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:10:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:10:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:10:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:10:01,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549606150] [2022-07-13 22:10:01,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549606150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:10:01,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:10:01,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:10:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542859722] [2022-07-13 22:10:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:10:01,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:10:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:10:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:10:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:10:01,979 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 352 [2022-07-13 22:10:01,979 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) [2022-07-13 22:10:01,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:10:01,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 352 [2022-07-13 22:10:01,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:10:02,796 INFO L129 PetriNetUnfolder]: 1206/5197 cut-off events. [2022-07-13 22:10:02,796 INFO L130 PetriNetUnfolder]: For 2110/2121 co-relation queries the response was YES. [2022-07-13 22:10:02,853 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. [2022-07-13 22:10:02,878 INFO L132 encePairwiseOnDemand]: 348/352 looper letters, 43 selfloop transitions, 3 changer transitions 3/370 dead transitions. [2022-07-13 22:10:02,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 370 transitions, 1179 flow [2022-07-13 22:10:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:10:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:10:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1597 transitions. [2022-07-13 22:10:02,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9073863636363636 [2022-07-13 22:10:02,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1597 transitions. [2022-07-13 22:10:02,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1597 transitions. [2022-07-13 22:10:02,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:10:02,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1597 transitions. [2022-07-13 22:10:02,883 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) [2022-07-13 22:10:02,884 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) [2022-07-13 22:10:02,885 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) [2022-07-13 22:10:02,885 INFO L186 Difference]: Start difference. First operand has 348 places, 346 transitions, 983 flow. Second operand 5 states and 1597 transitions. [2022-07-13 22:10:02,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 370 transitions, 1179 flow [2022-07-13 22:10:02,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 370 transitions, 1179 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:10:02,908 INFO L242 Difference]: Finished difference. Result has 355 places, 348 transitions, 1008 flow [2022-07-13 22:10:02,909 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} [2022-07-13 22:10:02,909 INFO L279 CegarLoopForPetriNet]: 313 programPoint places, 42 predicate places. [2022-07-13 22:10:02,910 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 348 transitions, 1008 flow [2022-07-13 22:10:02,910 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) [2022-07-13 22:10:02,910 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:10:02,910 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] [2022-07-13 22:10:02,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:10:02,911 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:10:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:10:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1298157067, now seen corresponding path program 1 times [2022-07-13 22:10:02,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:10:02,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275112231] [2022-07-13 22:10:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:10:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:10:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:10:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:10:03,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:10:03,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275112231] [2022-07-13 22:10:03,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275112231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:10:03,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:10:03,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:10:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27630491] [2022-07-13 22:10:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:10:03,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:10:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:10:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:10:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:10:03,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 352 [2022-07-13 22:10:03,026 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) [2022-07-13 22:10:03,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:10:03,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 352 [2022-07-13 22:10:03,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:10:20,697 INFO L129 PetriNetUnfolder]: 62171/113466 cut-off events. [2022-07-13 22:10:20,697 INFO L130 PetriNetUnfolder]: For 40835/40947 co-relation queries the response was YES. [2022-07-13 22:10:22,343 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. [2022-07-13 22:10:22,732 INFO L132 encePairwiseOnDemand]: 338/352 looper letters, 134 selfloop transitions, 7 changer transitions 217/618 dead transitions. [2022-07-13 22:10:22,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 618 transitions, 2482 flow [2022-07-13 22:10:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:10:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:10:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4572 transitions. [2022-07-13 22:10:22,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8117897727272727 [2022-07-13 22:10:22,736 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4572 transitions. [2022-07-13 22:10:22,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4572 transitions. [2022-07-13 22:10:22,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:10:22,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4572 transitions. [2022-07-13 22:10:22,744 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) [2022-07-13 22:10:22,748 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) [2022-07-13 22:10:22,748 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) [2022-07-13 22:10:22,748 INFO L186 Difference]: Start difference. First operand has 355 places, 348 transitions, 1008 flow. Second operand 16 states and 4572 transitions. [2022-07-13 22:10:22,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 618 transitions, 2482 flow