./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:37:21,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:37:21,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:37:21,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:37:21,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:37:21,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:37:21,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:37:21,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:37:21,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:37:21,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:37:21,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:37:21,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:37:21,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:37:21,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:37:21,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:37:21,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:37:21,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:37:21,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:37:21,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:37:21,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:37:21,717 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:37:21,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:37:21,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:37:21,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:37:21,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:37:21,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:37:21,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:37:21,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:37:21,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:37:21,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:37:21,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:37:21,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:37:21,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:37:21,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:37:21,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:37:21,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:37:21,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:37:21,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:37:21,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:37:21,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:37:21,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:37:21,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:37:21,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:37:21,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:37:21,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:37:21,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:37:21,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:37:21,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:37:21,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:37:21,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:37:21,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:37:21,763 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:37:21,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:37:21,764 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:37:21,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:37:21,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:37:21,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:37:21,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:37:21,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:37:21,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:37:21,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:37:21,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:37:21,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:37:21,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:37:21,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:37:21,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:37:21,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:37:21,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:37:21,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:37:21,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:37:21,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:37:21,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:37:21,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:37:21,767 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:37:21,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:37:21,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:37:21,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-07-21 08:37:22,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:37:22,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:37:22,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:37:22,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:37:22,034 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:37:22,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-21 08:37:22,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea26a775e/a297d5f89b6840c981d60f949e0f6de5/FLAG90cae736a [2022-07-21 08:37:22,506 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:37:22,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-21 08:37:22,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea26a775e/a297d5f89b6840c981d60f949e0f6de5/FLAG90cae736a [2022-07-21 08:37:22,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea26a775e/a297d5f89b6840c981d60f949e0f6de5 [2022-07-21 08:37:22,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:37:22,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:37:22,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:37:22,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:37:22,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:37:22,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:37:22" (1/1) ... [2022-07-21 08:37:22,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfc1fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:22, skipping insertion in model container [2022-07-21 08:37:22,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:37:22" (1/1) ... [2022-07-21 08:37:22,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:37:22,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:37:23,175 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/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-07-21 08:37:23,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:37:23,193 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:37:23,224 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/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-07-21 08:37:23,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:37:23,257 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:37:23,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23 WrapperNode [2022-07-21 08:37:23,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:37:23,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:37:23,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:37:23,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:37:23,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,309 INFO L137 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-07-21 08:37:23,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:37:23,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:37:23,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:37:23,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:37:23,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:37:23,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:37:23,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:37:23,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:37:23,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (1/1) ... [2022-07-21 08:37:23,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:37:23,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:37:23,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:37:23,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:37:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-21 08:37:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-21 08:37:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:37:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:37:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:37:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:37:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:37:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:37:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:37:23,406 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:37:23,527 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:37:23,544 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:37:23,639 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:37:23,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:37:23,658 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 08:37:23,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:37:23 BoogieIcfgContainer [2022-07-21 08:37:23,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:37:23,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:37:23,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:37:23,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:37:23,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:37:22" (1/3) ... [2022-07-21 08:37:23,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f0f951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:37:23, skipping insertion in model container [2022-07-21 08:37:23,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:23" (2/3) ... [2022-07-21 08:37:23,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f0f951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:37:23, skipping insertion in model container [2022-07-21 08:37:23,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:37:23" (3/3) ... [2022-07-21 08:37:23,666 INFO L111 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-07-21 08:37:23,669 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:37:23,676 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:37:23,676 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:37:23,676 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:37:23,700 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:23,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 117 flow [2022-07-21 08:37:23,751 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2022-07-21 08:37:23,753 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:37:23,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2022-07-21 08:37:23,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 117 flow [2022-07-21 08:37:23,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 117 flow [2022-07-21 08:37:23,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:23,788 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@146102ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e3276a8 [2022-07-21 08:37:23,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:37:23,803 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2022-07-21 08:37:23,804 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:37:23,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:23,805 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:23,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:37:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1552839894, now seen corresponding path program 1 times [2022-07-21 08:37:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:23,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559619747] [2022-07-21 08:37:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:23,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:23,933 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:23,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:23,984 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:23,985 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-21 08:37:23,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-21 08:37:23,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-21 08:37:23,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:37:23,988 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 08:37:23,992 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:23,992 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:37:24,026 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:24,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-07-21 08:37:24,054 INFO L129 PetriNetUnfolder]: 11/108 cut-off events. [2022-07-21 08:37:24,055 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:37:24,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 108 events. 11/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2022-07-21 08:37:24,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 84 transitions, 180 flow [2022-07-21 08:37:24,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-07-21 08:37:24,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:24,062 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@146102ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e3276a8 [2022-07-21 08:37:24,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:37:24,085 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2022-07-21 08:37:24,086 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:37:24,086 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:24,086 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:24,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 08:37:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1549820851, now seen corresponding path program 1 times [2022-07-21 08:37:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556171134] [2022-07-21 08:37:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:24,127 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:24,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:24,162 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:24,162 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-21 08:37:24,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-21 08:37:24,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-21 08:37:24,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-21 08:37:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:37:24,164 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 08:37:24,165 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:24,165 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-21 08:37:24,192 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:24,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 245 flow [2022-07-21 08:37:24,221 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2022-07-21 08:37:24,221 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:37:24,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 149 events. 16/149 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 335 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 112. Up to 8 conditions per place. [2022-07-21 08:37:24,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 245 flow [2022-07-21 08:37:24,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 245 flow [2022-07-21 08:37:24,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:24,232 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@146102ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e3276a8 [2022-07-21 08:37:24,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 08:37:24,242 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-21 08:37:24,242 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:37:24,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:24,242 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] [2022-07-21 08:37:24,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 08:37:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash 289875179, now seen corresponding path program 1 times [2022-07-21 08:37:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:24,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986854274] [2022-07-21 08:37:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:24,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:24,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986854274] [2022-07-21 08:37:24,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986854274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:24,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:24,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960755976] [2022-07-21 08:37:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:24,391 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-21 08:37:24,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:24,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-21 08:37:24,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:24,575 INFO L129 PetriNetUnfolder]: 199/815 cut-off events. [2022-07-21 08:37:24,576 INFO L130 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-07-21 08:37:24,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 815 events. 199/815 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5408 event pairs, 96 based on Foata normal form. 189/868 useless extension candidates. Maximal degree in co-relation 296. Up to 175 conditions per place. [2022-07-21 08:37:24,584 INFO L132 encePairwiseOnDemand]: 104/112 looper letters, 20 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2022-07-21 08:37:24,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 291 flow [2022-07-21 08:37:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2022-07-21 08:37:24,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-07-21 08:37:24,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2022-07-21 08:37:24,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2022-07-21 08:37:24,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:24,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2022-07-21 08:37:24,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,605 INFO L186 Difference]: Start difference. First operand has 106 places, 112 transitions, 245 flow. Second operand 3 states and 303 transitions. [2022-07-21 08:37:24,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 291 flow [2022-07-21 08:37:24,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 283 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-21 08:37:24,610 INFO L242 Difference]: Finished difference. Result has 101 places, 100 transitions, 227 flow [2022-07-21 08:37:24,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2022-07-21 08:37:24,614 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2022-07-21 08:37:24,614 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 227 flow [2022-07-21 08:37:24,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,614 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:24,614 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] [2022-07-21 08:37:24,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:37:24,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 08:37:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash 290827468, now seen corresponding path program 1 times [2022-07-21 08:37:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:24,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78544774] [2022-07-21 08:37:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:24,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78544774] [2022-07-21 08:37:24,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78544774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:24,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:24,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:24,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389868950] [2022-07-21 08:37:24,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:24,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:24,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:24,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:24,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-21 08:37:24,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:24,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-21 08:37:24,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:24,738 INFO L129 PetriNetUnfolder]: 186/802 cut-off events. [2022-07-21 08:37:24,739 INFO L130 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-07-21 08:37:24,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 802 events. 186/802 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5393 event pairs, 96 based on Foata normal form. 13/690 useless extension candidates. Maximal degree in co-relation 938. Up to 175 conditions per place. [2022-07-21 08:37:24,746 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 20 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2022-07-21 08:37:24,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 287 flow [2022-07-21 08:37:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-07-21 08:37:24,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2022-07-21 08:37:24,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-07-21 08:37:24,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-07-21 08:37:24,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:24,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-07-21 08:37:24,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,751 INFO L186 Difference]: Start difference. First operand has 101 places, 100 transitions, 227 flow. Second operand 3 states and 292 transitions. [2022-07-21 08:37:24,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 287 flow [2022-07-21 08:37:24,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:24,753 INFO L242 Difference]: Finished difference. Result has 102 places, 99 transitions, 222 flow [2022-07-21 08:37:24,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2022-07-21 08:37:24,754 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-21 08:37:24,754 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 222 flow [2022-07-21 08:37:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,754 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:24,754 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] [2022-07-21 08:37:24,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:37:24,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 08:37:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash 290828491, now seen corresponding path program 1 times [2022-07-21 08:37:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:24,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201351506] [2022-07-21 08:37:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:24,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:24,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201351506] [2022-07-21 08:37:24,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201351506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:24,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:24,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:24,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338003135] [2022-07-21 08:37:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:24,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:24,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:24,781 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-21 08:37:24,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:24,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-21 08:37:24,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:24,897 INFO L129 PetriNetUnfolder]: 276/1095 cut-off events. [2022-07-21 08:37:24,898 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-07-21 08:37:24,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 1095 events. 276/1095 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8236 event pairs, 150 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1572. Up to 268 conditions per place. [2022-07-21 08:37:24,909 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 23 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-07-21 08:37:24,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 294 flow [2022-07-21 08:37:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-07-21 08:37:24,911 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8363095238095238 [2022-07-21 08:37:24,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-07-21 08:37:24,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-07-21 08:37:24,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:24,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-07-21 08:37:24,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,915 INFO L186 Difference]: Start difference. First operand has 102 places, 99 transitions, 222 flow. Second operand 3 states and 281 transitions. [2022-07-21 08:37:24,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 294 flow [2022-07-21 08:37:24,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:24,922 INFO L242 Difference]: Finished difference. Result has 103 places, 98 transitions, 223 flow [2022-07-21 08:37:24,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2022-07-21 08:37:24,924 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2022-07-21 08:37:24,924 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 223 flow [2022-07-21 08:37:24,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:24,925 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] [2022-07-21 08:37:24,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:37:24,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 08:37:24,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:24,926 INFO L85 PathProgramCache]: Analyzing trace with hash 289874156, now seen corresponding path program 1 times [2022-07-21 08:37:24,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:24,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689752837] [2022-07-21 08:37:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:24,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:24,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689752837] [2022-07-21 08:37:24,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689752837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:24,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:24,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:24,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385051399] [2022-07-21 08:37:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:24,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:24,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-21 08:37:24,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:24,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:24,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-21 08:37:24,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:25,103 INFO L129 PetriNetUnfolder]: 258/1051 cut-off events. [2022-07-21 08:37:25,104 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-07-21 08:37:25,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 1051 events. 258/1051 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7876 event pairs, 150 based on Foata normal form. 13/961 useless extension candidates. Maximal degree in co-relation 1511. Up to 268 conditions per place. [2022-07-21 08:37:25,112 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 23 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2022-07-21 08:37:25,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 289 flow [2022-07-21 08:37:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-07-21 08:37:25,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-21 08:37:25,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-07-21 08:37:25,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-07-21 08:37:25,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:25,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-07-21 08:37:25,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,117 INFO L186 Difference]: Start difference. First operand has 103 places, 98 transitions, 223 flow. Second operand 3 states and 280 transitions. [2022-07-21 08:37:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 289 flow [2022-07-21 08:37:25,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:25,121 INFO L242 Difference]: Finished difference. Result has 102 places, 96 transitions, 218 flow [2022-07-21 08:37:25,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2022-07-21 08:37:25,124 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-21 08:37:25,124 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 218 flow [2022-07-21 08:37:25,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,125 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:25,125 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:25,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:37:25,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 08:37:25,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash -337068427, now seen corresponding path program 1 times [2022-07-21 08:37:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:25,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451619611] [2022-07-21 08:37:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:25,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:25,151 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:25,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:25,179 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:25,179 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-21 08:37:25,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-21 08:37:25,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-21 08:37:25,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-21 08:37:25,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-21 08:37:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:37:25,180 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-21 08:37:25,181 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:25,181 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-21 08:37:25,216 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:25,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 140 transitions, 312 flow [2022-07-21 08:37:25,240 INFO L129 PetriNetUnfolder]: 21/190 cut-off events. [2022-07-21 08:37:25,241 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-21 08:37:25,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 190 events. 21/190 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 480 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 157. Up to 10 conditions per place. [2022-07-21 08:37:25,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 140 transitions, 312 flow [2022-07-21 08:37:25,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 312 flow [2022-07-21 08:37:25,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:25,253 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@146102ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e3276a8 [2022-07-21 08:37:25,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:37:25,261 INFO L129 PetriNetUnfolder]: 8/90 cut-off events. [2022-07-21 08:37:25,262 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:37:25,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:25,262 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] [2022-07-21 08:37:25,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1049301266, now seen corresponding path program 1 times [2022-07-21 08:37:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:25,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178465578] [2022-07-21 08:37:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:25,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178465578] [2022-07-21 08:37:25,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178465578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:25,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:25,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309396636] [2022-07-21 08:37:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:25,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:25,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:25,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-21 08:37:25,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 140 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:25,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-21 08:37:25,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:25,630 INFO L129 PetriNetUnfolder]: 904/3181 cut-off events. [2022-07-21 08:37:25,630 INFO L130 PetriNetUnfolder]: For 1276/1276 co-relation queries the response was YES. [2022-07-21 08:37:25,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 3181 events. 904/3181 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 28092 event pairs, 447 based on Foata normal form. 710/3438 useless extension candidates. Maximal degree in co-relation 1285. Up to 688 conditions per place. [2022-07-21 08:37:25,662 INFO L132 encePairwiseOnDemand]: 131/140 looper letters, 26 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-21 08:37:25,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 136 transitions, 381 flow [2022-07-21 08:37:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-07-21 08:37:25,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-07-21 08:37:25,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-07-21 08:37:25,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-07-21 08:37:25,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:25,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-07-21 08:37:25,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,667 INFO L186 Difference]: Start difference. First operand has 132 places, 140 transitions, 312 flow. Second operand 3 states and 380 transitions. [2022-07-21 08:37:25,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 136 transitions, 381 flow [2022-07-21 08:37:25,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 136 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-21 08:37:25,671 INFO L242 Difference]: Finished difference. Result has 126 places, 126 transitions, 284 flow [2022-07-21 08:37:25,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2022-07-21 08:37:25,672 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2022-07-21 08:37:25,672 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 284 flow [2022-07-21 08:37:25,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:25,672 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] [2022-07-21 08:37:25,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:37:25,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1050253555, now seen corresponding path program 1 times [2022-07-21 08:37:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:25,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510775550] [2022-07-21 08:37:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:25,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:25,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510775550] [2022-07-21 08:37:25,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510775550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:25,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:25,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33953097] [2022-07-21 08:37:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:25,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:25,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:25,691 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-21 08:37:25,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:25,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:25,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-21 08:37:25,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:26,052 INFO L129 PetriNetUnfolder]: 864/3141 cut-off events. [2022-07-21 08:37:26,052 INFO L130 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-07-21 08:37:26,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 3141 events. 864/3141 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 28007 event pairs, 447 based on Foata normal form. 40/2758 useless extension candidates. Maximal degree in co-relation 3967. Up to 688 conditions per place. [2022-07-21 08:37:26,086 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 26 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2022-07-21 08:37:26,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 367 flow [2022-07-21 08:37:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-21 08:37:26,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-21 08:37:26,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-21 08:37:26,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-21 08:37:26,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:26,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-21 08:37:26,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,090 INFO L186 Difference]: Start difference. First operand has 126 places, 126 transitions, 284 flow. Second operand 3 states and 367 transitions. [2022-07-21 08:37:26,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 367 flow [2022-07-21 08:37:26,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 135 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:26,094 INFO L242 Difference]: Finished difference. Result has 127 places, 125 transitions, 279 flow [2022-07-21 08:37:26,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2022-07-21 08:37:26,095 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-21 08:37:26,096 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 279 flow [2022-07-21 08:37:26,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,096 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:26,096 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] [2022-07-21 08:37:26,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:37:26,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:26,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:26,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1050254578, now seen corresponding path program 1 times [2022-07-21 08:37:26,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:26,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363784949] [2022-07-21 08:37:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:26,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:26,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363784949] [2022-07-21 08:37:26,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363784949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:26,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:26,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905764957] [2022-07-21 08:37:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:26,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-21 08:37:26,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:26,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-21 08:37:26,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:26,645 INFO L129 PetriNetUnfolder]: 1281/4525 cut-off events. [2022-07-21 08:37:26,645 INFO L130 PetriNetUnfolder]: For 508/508 co-relation queries the response was YES. [2022-07-21 08:37:26,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6757 conditions, 4525 events. 1281/4525 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 44655 event pairs, 690 based on Foata normal form. 0/3990 useless extension candidates. Maximal degree in co-relation 6613. Up to 1051 conditions per place. [2022-07-21 08:37:26,698 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 29 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-21 08:37:26,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 374 flow [2022-07-21 08:37:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-07-21 08:37:26,700 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8476190476190476 [2022-07-21 08:37:26,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-07-21 08:37:26,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-07-21 08:37:26,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:26,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-07-21 08:37:26,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,703 INFO L186 Difference]: Start difference. First operand has 127 places, 125 transitions, 279 flow. Second operand 3 states and 356 transitions. [2022-07-21 08:37:26,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 374 flow [2022-07-21 08:37:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:26,706 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 280 flow [2022-07-21 08:37:26,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-07-21 08:37:26,706 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2022-07-21 08:37:26,706 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 280 flow [2022-07-21 08:37:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,706 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:26,707 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] [2022-07-21 08:37:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:37:26,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1049300243, now seen corresponding path program 1 times [2022-07-21 08:37:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:26,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413178304] [2022-07-21 08:37:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:26,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413178304] [2022-07-21 08:37:26,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413178304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:26,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:26,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144739209] [2022-07-21 08:37:26,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:26,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:26,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:26,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:26,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-21 08:37:26,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:26,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:26,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-21 08:37:26,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:27,165 INFO L129 PetriNetUnfolder]: 1200/4364 cut-off events. [2022-07-21 08:37:27,166 INFO L130 PetriNetUnfolder]: For 539/539 co-relation queries the response was YES. [2022-07-21 08:37:27,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6506 conditions, 4364 events. 1200/4364 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 42776 event pairs, 690 based on Foata normal form. 40/3951 useless extension candidates. Maximal degree in co-relation 6369. Up to 1051 conditions per place. [2022-07-21 08:37:27,222 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 29 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2022-07-21 08:37:27,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 369 flow [2022-07-21 08:37:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-07-21 08:37:27,224 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-21 08:37:27,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-07-21 08:37:27,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-07-21 08:37:27,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:27,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-07-21 08:37:27,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,226 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 280 flow. Second operand 3 states and 355 transitions. [2022-07-21 08:37:27,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 369 flow [2022-07-21 08:37:27,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:27,229 INFO L242 Difference]: Finished difference. Result has 127 places, 122 transitions, 275 flow [2022-07-21 08:37:27,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-07-21 08:37:27,229 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-21 08:37:27,230 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 275 flow [2022-07-21 08:37:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,230 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:27,230 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:27,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:37:27,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -344456956, now seen corresponding path program 1 times [2022-07-21 08:37:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509084658] [2022-07-21 08:37:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:27,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:27,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509084658] [2022-07-21 08:37:27,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509084658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:27,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:27,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225109670] [2022-07-21 08:37:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:27,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:27,250 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-21 08:37:27,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:27,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-21 08:37:27,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:27,742 INFO L129 PetriNetUnfolder]: 1850/5480 cut-off events. [2022-07-21 08:37:27,742 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-07-21 08:37:27,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 5480 events. 1850/5480 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 53104 event pairs, 1062 based on Foata normal form. 0/4599 useless extension candidates. Maximal degree in co-relation 6356. Up to 1587 conditions per place. [2022-07-21 08:37:27,815 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 30 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2022-07-21 08:37:27,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 373 flow [2022-07-21 08:37:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-07-21 08:37:27,816 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-07-21 08:37:27,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-07-21 08:37:27,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-07-21 08:37:27,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:27,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-07-21 08:37:27,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,818 INFO L186 Difference]: Start difference. First operand has 127 places, 122 transitions, 275 flow. Second operand 3 states and 359 transitions. [2022-07-21 08:37:27,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 373 flow [2022-07-21 08:37:27,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:27,821 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 298 flow [2022-07-21 08:37:27,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-07-21 08:37:27,822 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2022-07-21 08:37:27,822 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 298 flow [2022-07-21 08:37:27,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,822 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:27,822 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:37:27,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -344455933, now seen corresponding path program 1 times [2022-07-21 08:37:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:27,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395633623] [2022-07-21 08:37:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395633623] [2022-07-21 08:37:27,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395633623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:27,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:27,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110347345] [2022-07-21 08:37:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:27,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:27,846 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-21 08:37:27,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:27,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:27,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-21 08:37:27,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:28,200 INFO L129 PetriNetUnfolder]: 1258/3752 cut-off events. [2022-07-21 08:37:28,200 INFO L130 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-07-21 08:37:28,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 3752 events. 1258/3752 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 33737 event pairs, 618 based on Foata normal form. 0/3172 useless extension candidates. Maximal degree in co-relation 4521. Up to 935 conditions per place. [2022-07-21 08:37:28,247 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 25 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-07-21 08:37:28,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 378 flow [2022-07-21 08:37:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-21 08:37:28,249 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-21 08:37:28,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-21 08:37:28,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-21 08:37:28,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:28,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-21 08:37:28,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,251 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 298 flow. Second operand 3 states and 367 transitions. [2022-07-21 08:37:28,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 378 flow [2022-07-21 08:37:28,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 373 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:28,262 INFO L242 Difference]: Finished difference. Result has 133 places, 124 transitions, 303 flow [2022-07-21 08:37:28,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=133, PETRI_TRANSITIONS=124} [2022-07-21 08:37:28,263 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2022-07-21 08:37:28,263 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 124 transitions, 303 flow [2022-07-21 08:37:28,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:28,264 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:37:28,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -343503644, now seen corresponding path program 1 times [2022-07-21 08:37:28,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:28,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659291507] [2022-07-21 08:37:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:28,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:28,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659291507] [2022-07-21 08:37:28,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659291507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:28,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:28,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038114067] [2022-07-21 08:37:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:28,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:28,282 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-21 08:37:28,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 124 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:28,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-21 08:37:28,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:28,624 INFO L129 PetriNetUnfolder]: 1095/3433 cut-off events. [2022-07-21 08:37:28,624 INFO L130 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2022-07-21 08:37:28,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 3433 events. 1095/3433 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 30679 event pairs, 618 based on Foata normal form. 52/2998 useless extension candidates. Maximal degree in co-relation 4035. Up to 935 conditions per place. [2022-07-21 08:37:28,663 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 25 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2022-07-21 08:37:28,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 368 flow [2022-07-21 08:37:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-07-21 08:37:28,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-07-21 08:37:28,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-07-21 08:37:28,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-07-21 08:37:28,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:28,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-07-21 08:37:28,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,666 INFO L186 Difference]: Start difference. First operand has 133 places, 124 transitions, 303 flow. Second operand 3 states and 366 transitions. [2022-07-21 08:37:28,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 368 flow [2022-07-21 08:37:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 361 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-21 08:37:28,671 INFO L242 Difference]: Finished difference. Result has 132 places, 121 transitions, 283 flow [2022-07-21 08:37:28,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2022-07-21 08:37:28,672 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2022-07-21 08:37:28,672 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 283 flow [2022-07-21 08:37:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:28,672 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:28,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:37:28,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -343502621, now seen corresponding path program 1 times [2022-07-21 08:37:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926940303] [2022-07-21 08:37:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:28,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926940303] [2022-07-21 08:37:28,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926940303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:28,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:28,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309152998] [2022-07-21 08:37:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:28,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:28,692 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-21 08:37:28,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:28,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:28,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-21 08:37:28,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:29,154 INFO L129 PetriNetUnfolder]: 1500/4650 cut-off events. [2022-07-21 08:37:29,155 INFO L130 PetriNetUnfolder]: For 589/589 co-relation queries the response was YES. [2022-07-21 08:37:29,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 4650 events. 1500/4650 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 44613 event pairs, 951 based on Foata normal form. 0/4026 useless extension candidates. Maximal degree in co-relation 6407. Up to 1424 conditions per place. [2022-07-21 08:37:29,215 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 28 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2022-07-21 08:37:29,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 364 flow [2022-07-21 08:37:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-07-21 08:37:29,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-07-21 08:37:29,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-07-21 08:37:29,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-07-21 08:37:29,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:29,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-07-21 08:37:29,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:29,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:29,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:29,219 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 283 flow. Second operand 3 states and 354 transitions. [2022-07-21 08:37:29,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 364 flow [2022-07-21 08:37:29,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 363 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:29,223 INFO L242 Difference]: Finished difference. Result has 131 places, 119 transitions, 279 flow [2022-07-21 08:37:29,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2022-07-21 08:37:29,224 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2022-07-21 08:37:29,224 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 279 flow [2022-07-21 08:37:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:29,224 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:29,225 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:37:29,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:37:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1821018244, now seen corresponding path program 1 times [2022-07-21 08:37:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:29,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794610484] [2022-07-21 08:37:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:29,236 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:29,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:29,246 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:29,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-21 08:37:29,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-21 08:37:29,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-21 08:37:29,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-21 08:37:29,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-21 08:37:29,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-21 08:37:29,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:37:29,247 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:29,248 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:29,248 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-21 08:37:29,266 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:29,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 168 transitions, 381 flow [2022-07-21 08:37:29,285 INFO L129 PetriNetUnfolder]: 26/231 cut-off events. [2022-07-21 08:37:29,286 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-21 08:37:29,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 231 events. 26/231 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 624 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2022-07-21 08:37:29,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 168 transitions, 381 flow [2022-07-21 08:37:29,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 168 transitions, 381 flow [2022-07-21 08:37:29,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:29,291 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@146102ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e3276a8 [2022-07-21 08:37:29,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:37:29,295 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2022-07-21 08:37:29,295 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:37:29,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:29,295 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] [2022-07-21 08:37:29,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash 47724502, now seen corresponding path program 1 times [2022-07-21 08:37:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:29,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313473151] [2022-07-21 08:37:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313473151] [2022-07-21 08:37:29,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313473151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:29,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:29,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295392401] [2022-07-21 08:37:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:29,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:29,315 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-21 08:37:29,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 168 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:29,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:29,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-21 08:37:29,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:31,051 INFO L129 PetriNetUnfolder]: 5732/17923 cut-off events. [2022-07-21 08:37:31,052 INFO L130 PetriNetUnfolder]: For 9815/9815 co-relation queries the response was YES. [2022-07-21 08:37:31,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28687 conditions, 17923 events. 5732/17923 cut-off events. For 9815/9815 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 209285 event pairs, 3120 based on Foata normal form. 3833/19472 useless extension candidates. Maximal degree in co-relation 8983. Up to 4331 conditions per place. [2022-07-21 08:37:31,337 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 37 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2022-07-21 08:37:31,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 166 transitions, 489 flow [2022-07-21 08:37:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-07-21 08:37:31,338 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8908730158730159 [2022-07-21 08:37:31,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-07-21 08:37:31,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-07-21 08:37:31,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:31,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-07-21 08:37:31,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,341 INFO L186 Difference]: Start difference. First operand has 158 places, 168 transitions, 381 flow. Second operand 3 states and 449 transitions. [2022-07-21 08:37:31,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 166 transitions, 489 flow [2022-07-21 08:37:31,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 166 transitions, 457 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-07-21 08:37:31,348 INFO L242 Difference]: Finished difference. Result has 151 places, 153 transitions, 351 flow [2022-07-21 08:37:31,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=151, PETRI_TRANSITIONS=153} [2022-07-21 08:37:31,349 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -7 predicate places. [2022-07-21 08:37:31,349 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 351 flow [2022-07-21 08:37:31,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,350 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:31,350 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] [2022-07-21 08:37:31,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:37:31,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash 48677814, now seen corresponding path program 1 times [2022-07-21 08:37:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:31,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520739541] [2022-07-21 08:37:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:31,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520739541] [2022-07-21 08:37:31,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520739541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:31,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:31,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238237575] [2022-07-21 08:37:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:31,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:31,381 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-21 08:37:31,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 153 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:31,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-21 08:37:31,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:32,506 INFO L129 PetriNetUnfolder]: 3846/12345 cut-off events. [2022-07-21 08:37:32,507 INFO L130 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2022-07-21 08:37:32,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18515 conditions, 12345 events. 3846/12345 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 136866 event pairs, 2148 based on Foata normal form. 0/10911 useless extension candidates. Maximal degree in co-relation 16165. Up to 2996 conditions per place. [2022-07-21 08:37:32,712 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/165 dead transitions. [2022-07-21 08:37:32,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 165 transitions, 457 flow [2022-07-21 08:37:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-07-21 08:37:32,714 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.878968253968254 [2022-07-21 08:37:32,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-07-21 08:37:32,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-07-21 08:37:32,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:32,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-07-21 08:37:32,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,717 INFO L186 Difference]: Start difference. First operand has 151 places, 153 transitions, 351 flow. Second operand 3 states and 443 transitions. [2022-07-21 08:37:32,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 165 transitions, 457 flow [2022-07-21 08:37:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 165 transitions, 453 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:32,724 INFO L242 Difference]: Finished difference. Result has 153 places, 151 transitions, 342 flow [2022-07-21 08:37:32,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2022-07-21 08:37:32,725 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-21 08:37:32,725 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 342 flow [2022-07-21 08:37:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:32,726 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] [2022-07-21 08:37:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:37:32,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 48678837, now seen corresponding path program 1 times [2022-07-21 08:37:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450549229] [2022-07-21 08:37:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:32,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450549229] [2022-07-21 08:37:32,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450549229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:32,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:32,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:32,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424159817] [2022-07-21 08:37:32,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:32,743 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-21 08:37:32,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:32,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-21 08:37:32,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:34,465 INFO L129 PetriNetUnfolder]: 5166/16994 cut-off events. [2022-07-21 08:37:34,465 INFO L130 PetriNetUnfolder]: For 2032/2032 co-relation queries the response was YES. [2022-07-21 08:37:34,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25108 conditions, 16994 events. 5166/16994 cut-off events. For 2032/2032 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 199974 event pairs, 3120 based on Foata normal form. 0/15263 useless extension candidates. Maximal degree in co-relation 24960. Up to 4331 conditions per place. [2022-07-21 08:37:34,648 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 36 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-07-21 08:37:34,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 163 transitions, 457 flow [2022-07-21 08:37:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-21 08:37:34,649 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-21 08:37:34,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-21 08:37:34,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-21 08:37:34,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:34,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-21 08:37:34,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,651 INFO L186 Difference]: Start difference. First operand has 153 places, 151 transitions, 342 flow. Second operand 3 states and 431 transitions. [2022-07-21 08:37:34,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 163 transitions, 457 flow [2022-07-21 08:37:34,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:34,661 INFO L242 Difference]: Finished difference. Result has 154 places, 150 transitions, 338 flow [2022-07-21 08:37:34,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2022-07-21 08:37:34,662 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -4 predicate places. [2022-07-21 08:37:34,662 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 338 flow [2022-07-21 08:37:34,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:34,662 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] [2022-07-21 08:37:34,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:37:34,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash 47725525, now seen corresponding path program 1 times [2022-07-21 08:37:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:34,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095793128] [2022-07-21 08:37:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:34,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:34,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095793128] [2022-07-21 08:37:34,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095793128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:34,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:34,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567693479] [2022-07-21 08:37:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:34,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:34,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-21 08:37:34,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:34,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-21 08:37:34,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:35,901 INFO L129 PetriNetUnfolder]: 3432/10702 cut-off events. [2022-07-21 08:37:35,902 INFO L130 PetriNetUnfolder]: For 1202/1202 co-relation queries the response was YES. [2022-07-21 08:37:35,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16145 conditions, 10702 events. 3432/10702 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 114399 event pairs, 1824 based on Foata normal form. 121/9667 useless extension candidates. Maximal degree in co-relation 13806. Up to 2551 conditions per place. [2022-07-21 08:37:36,007 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-21 08:37:36,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 161 transitions, 444 flow [2022-07-21 08:37:36,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-21 08:37:36,009 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-21 08:37:36,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-21 08:37:36,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-21 08:37:36,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:36,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-21 08:37:36,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:36,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:36,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:36,011 INFO L186 Difference]: Start difference. First operand has 154 places, 150 transitions, 338 flow. Second operand 3 states and 442 transitions. [2022-07-21 08:37:36,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 161 transitions, 444 flow [2022-07-21 08:37:36,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 440 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 08:37:36,015 INFO L242 Difference]: Finished difference. Result has 153 places, 148 transitions, 333 flow [2022-07-21 08:37:36,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2022-07-21 08:37:36,016 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-21 08:37:36,016 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 333 flow [2022-07-21 08:37:36,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:36,017 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:36,017 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:36,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:37:36,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:36,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash -985739132, now seen corresponding path program 1 times [2022-07-21 08:37:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:36,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18731129] [2022-07-21 08:37:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:36,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18731129] [2022-07-21 08:37:36,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18731129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:36,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:36,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330064982] [2022-07-21 08:37:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:36,034 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-21 08:37:36,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:36,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:36,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-21 08:37:36,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:37,542 INFO L129 PetriNetUnfolder]: 5228/15122 cut-off events. [2022-07-21 08:37:37,543 INFO L130 PetriNetUnfolder]: For 1574/1574 co-relation queries the response was YES. [2022-07-21 08:37:37,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22809 conditions, 15122 events. 5228/15122 cut-off events. For 1574/1574 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 166360 event pairs, 2952 based on Foata normal form. 0/12604 useless extension candidates. Maximal degree in co-relation 16906. Up to 4077 conditions per place. [2022-07-21 08:37:37,734 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-21 08:37:37,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 161 transitions, 440 flow [2022-07-21 08:37:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-21 08:37:37,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-21 08:37:37,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-21 08:37:37,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-21 08:37:37,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:37,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-21 08:37:37,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,739 INFO L186 Difference]: Start difference. First operand has 153 places, 148 transitions, 333 flow. Second operand 3 states and 442 transitions. [2022-07-21 08:37:37,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 161 transitions, 440 flow [2022-07-21 08:37:37,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:37,742 INFO L242 Difference]: Finished difference. Result has 155 places, 148 transitions, 337 flow [2022-07-21 08:37:37,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=155, PETRI_TRANSITIONS=148} [2022-07-21 08:37:37,743 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -3 predicate places. [2022-07-21 08:37:37,743 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 337 flow [2022-07-21 08:37:37,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,743 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:37,743 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:37,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:37:37,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash -985738109, now seen corresponding path program 1 times [2022-07-21 08:37:37,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:37,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121919927] [2022-07-21 08:37:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:37,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:37,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121919927] [2022-07-21 08:37:37,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121919927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:37,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:37,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:37,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119450592] [2022-07-21 08:37:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:37,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:37,765 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-21 08:37:37,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 148 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:37,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-21 08:37:37,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:40,165 INFO L129 PetriNetUnfolder]: 8136/23042 cut-off events. [2022-07-21 08:37:40,165 INFO L130 PetriNetUnfolder]: For 2669/2669 co-relation queries the response was YES. [2022-07-21 08:37:40,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35598 conditions, 23042 events. 8136/23042 cut-off events. For 2669/2669 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 273480 event pairs, 4284 based on Foata normal form. 0/19746 useless extension candidates. Maximal degree in co-relation 32059. Up to 5889 conditions per place. [2022-07-21 08:37:40,454 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 35 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2022-07-21 08:37:40,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 161 transitions, 454 flow [2022-07-21 08:37:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-07-21 08:37:40,456 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-07-21 08:37:40,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-07-21 08:37:40,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-07-21 08:37:40,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:40,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-07-21 08:37:40,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:40,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:40,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:40,459 INFO L186 Difference]: Start difference. First operand has 155 places, 148 transitions, 337 flow. Second operand 3 states and 432 transitions. [2022-07-21 08:37:40,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 161 transitions, 454 flow [2022-07-21 08:37:40,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 161 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:40,471 INFO L242 Difference]: Finished difference. Result has 158 places, 149 transitions, 354 flow [2022-07-21 08:37:40,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=158, PETRI_TRANSITIONS=149} [2022-07-21 08:37:40,471 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-21 08:37:40,471 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 149 transitions, 354 flow [2022-07-21 08:37:40,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:40,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:40,472 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:40,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:37:40,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:40,473 INFO L85 PathProgramCache]: Analyzing trace with hash -986691421, now seen corresponding path program 1 times [2022-07-21 08:37:40,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:40,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846424441] [2022-07-21 08:37:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:40,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:40,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:40,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846424441] [2022-07-21 08:37:40,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846424441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:40,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:40,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233187731] [2022-07-21 08:37:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:40,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:40,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-21 08:37:40,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 149 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:40,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:40,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-21 08:37:40,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:41,922 INFO L129 PetriNetUnfolder]: 4536/13446 cut-off events. [2022-07-21 08:37:41,922 INFO L130 PetriNetUnfolder]: For 1777/1777 co-relation queries the response was YES. [2022-07-21 08:37:42,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21159 conditions, 13446 events. 4536/13446 cut-off events. For 1777/1777 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 146763 event pairs, 2508 based on Foata normal form. 160/11840 useless extension candidates. Maximal degree in co-relation 13071. Up to 3473 conditions per place. [2022-07-21 08:37:42,225 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 31 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2022-07-21 08:37:42,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 447 flow [2022-07-21 08:37:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-21 08:37:42,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-21 08:37:42,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-21 08:37:42,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-21 08:37:42,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:42,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-21 08:37:42,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,228 INFO L186 Difference]: Start difference. First operand has 158 places, 149 transitions, 354 flow. Second operand 3 states and 441 transitions. [2022-07-21 08:37:42,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 447 flow [2022-07-21 08:37:42,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 159 transitions, 439 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-21 08:37:42,249 INFO L242 Difference]: Finished difference. Result has 158 places, 147 transitions, 341 flow [2022-07-21 08:37:42,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2022-07-21 08:37:42,250 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-21 08:37:42,250 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 341 flow [2022-07-21 08:37:42,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:42,250 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:42,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:37:42,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -986692444, now seen corresponding path program 1 times [2022-07-21 08:37:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:42,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761951760] [2022-07-21 08:37:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:37:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:42,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761951760] [2022-07-21 08:37:42,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761951760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:42,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:42,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:42,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459836001] [2022-07-21 08:37:42,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:42,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:42,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:42,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:42,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:42,266 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-21 08:37:42,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:42,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-21 08:37:42,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:44,170 INFO L129 PetriNetUnfolder]: 6240/18874 cut-off events. [2022-07-21 08:37:44,170 INFO L130 PetriNetUnfolder]: For 2045/2045 co-relation queries the response was YES. [2022-07-21 08:37:44,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28719 conditions, 18874 events. 6240/18874 cut-off events. For 2045/2045 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 221905 event pairs, 3840 based on Foata normal form. 0/16418 useless extension candidates. Maximal degree in co-relation 25019. Up to 5285 conditions per place. [2022-07-21 08:37:44,400 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 34 selfloop transitions, 1 changer transitions 0/157 dead transitions. [2022-07-21 08:37:44,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 445 flow [2022-07-21 08:37:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-07-21 08:37:44,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-07-21 08:37:44,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-07-21 08:37:44,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-07-21 08:37:44,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:44,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-07-21 08:37:44,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,412 INFO L186 Difference]: Start difference. First operand has 158 places, 147 transitions, 341 flow. Second operand 3 states and 429 transitions. [2022-07-21 08:37:44,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 445 flow [2022-07-21 08:37:44,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:44,431 INFO L242 Difference]: Finished difference. Result has 157 places, 145 transitions, 337 flow [2022-07-21 08:37:44,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2022-07-21 08:37:44,431 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -1 predicate places. [2022-07-21 08:37:44,432 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 337 flow [2022-07-21 08:37:44,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:44,432 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:44,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:37:44,432 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:44,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1011929366, now seen corresponding path program 1 times [2022-07-21 08:37:44,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:44,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376571132] [2022-07-21 08:37:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:44,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 08:37:44,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376571132] [2022-07-21 08:37:44,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376571132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:44,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:44,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959748859] [2022-07-21 08:37:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:44,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:44,451 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-21 08:37:44,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:44,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-21 08:37:44,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:46,146 INFO L129 PetriNetUnfolder]: 6004/15750 cut-off events. [2022-07-21 08:37:46,146 INFO L130 PetriNetUnfolder]: For 1789/1789 co-relation queries the response was YES. [2022-07-21 08:37:46,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25063 conditions, 15750 events. 6004/15750 cut-off events. For 1789/1789 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 168658 event pairs, 3420 based on Foata normal form. 0/12596 useless extension candidates. Maximal degree in co-relation 18571. Up to 4689 conditions per place. [2022-07-21 08:37:46,290 INFO L132 encePairwiseOnDemand]: 165/168 looper letters, 30 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-07-21 08:37:46,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 435 flow [2022-07-21 08:37:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-21 08:37:46,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-21 08:37:46,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-21 08:37:46,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-21 08:37:46,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:46,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-21 08:37:46,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:46,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:46,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:46,294 INFO L186 Difference]: Start difference. First operand has 157 places, 145 transitions, 337 flow. Second operand 3 states and 441 transitions. [2022-07-21 08:37:46,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 435 flow [2022-07-21 08:37:46,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:46,297 INFO L242 Difference]: Finished difference. Result has 160 places, 146 transitions, 350 flow [2022-07-21 08:37:46,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2022-07-21 08:37:46,297 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 2 predicate places. [2022-07-21 08:37:46,297 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 350 flow [2022-07-21 08:37:46,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:46,298 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:46,298 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:46,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:37:46,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1011928343, now seen corresponding path program 1 times [2022-07-21 08:37:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:46,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472102600] [2022-07-21 08:37:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 08:37:46,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:46,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472102600] [2022-07-21 08:37:46,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472102600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:46,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:46,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:46,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388253276] [2022-07-21 08:37:46,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:46,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:46,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-21 08:37:46,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:46,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:46,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-21 08:37:46,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:48,748 INFO L129 PetriNetUnfolder]: 9388/23678 cut-off events. [2022-07-21 08:37:48,748 INFO L130 PetriNetUnfolder]: For 3069/3069 co-relation queries the response was YES. [2022-07-21 08:37:48,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39096 conditions, 23678 events. 9388/23678 cut-off events. For 3069/3069 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 268327 event pairs, 5820 based on Foata normal form. 0/19800 useless extension candidates. Maximal degree in co-relation 30347. Up to 7921 conditions per place. [2022-07-21 08:37:49,276 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 34 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2022-07-21 08:37:49,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 158 transitions, 458 flow [2022-07-21 08:37:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-21 08:37:49,284 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-21 08:37:49,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-21 08:37:49,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-21 08:37:49,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:49,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-21 08:37:49,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:49,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:49,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:49,287 INFO L186 Difference]: Start difference. First operand has 160 places, 146 transitions, 350 flow. Second operand 3 states and 431 transitions. [2022-07-21 08:37:49,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 158 transitions, 458 flow [2022-07-21 08:37:49,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:49,312 INFO L242 Difference]: Finished difference. Result has 163 places, 147 transitions, 366 flow [2022-07-21 08:37:49,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=163, PETRI_TRANSITIONS=147} [2022-07-21 08:37:49,312 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 5 predicate places. [2022-07-21 08:37:49,312 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 366 flow [2022-07-21 08:37:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:49,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:49,313 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:49,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:37:49,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1012881655, now seen corresponding path program 1 times [2022-07-21 08:37:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732995391] [2022-07-21 08:37:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 08:37:49,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732995391] [2022-07-21 08:37:49,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732995391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:49,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:49,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:49,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973454646] [2022-07-21 08:37:49,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:49,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-21 08:37:49,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 147 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:49,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:49,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-21 08:37:49,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:50,876 INFO L129 PetriNetUnfolder]: 5796/15126 cut-off events. [2022-07-21 08:37:50,877 INFO L130 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2022-07-21 08:37:50,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25913 conditions, 15126 events. 5796/15126 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 161159 event pairs, 3420 based on Foata normal form. 0/12704 useless extension candidates. Maximal degree in co-relation 16859. Up to 4689 conditions per place. [2022-07-21 08:37:51,058 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 30 selfloop transitions, 1 changer transitions 0/155 dead transitions. [2022-07-21 08:37:51,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 155 transitions, 445 flow [2022-07-21 08:37:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-07-21 08:37:51,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-07-21 08:37:51,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-07-21 08:37:51,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-07-21 08:37:51,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:51,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-07-21 08:37:51,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:51,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:51,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:51,061 INFO L186 Difference]: Start difference. First operand has 163 places, 147 transitions, 366 flow. Second operand 3 states and 440 transitions. [2022-07-21 08:37:51,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 155 transitions, 445 flow [2022-07-21 08:37:51,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 437 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-21 08:37:51,099 INFO L242 Difference]: Finished difference. Result has 162 places, 144 transitions, 345 flow [2022-07-21 08:37:51,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2022-07-21 08:37:51,100 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 4 predicate places. [2022-07-21 08:37:51,100 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 345 flow [2022-07-21 08:37:51,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:51,100 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:51,100 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:37:51,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1012882678, now seen corresponding path program 1 times [2022-07-21 08:37:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:51,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654690460] [2022-07-21 08:37:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 08:37:51,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:51,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654690460] [2022-07-21 08:37:51,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654690460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:51,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:51,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:51,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037306374] [2022-07-21 08:37:51,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:51,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:51,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:51,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:51,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-21 08:37:51,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:51,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:51,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-21 08:37:51,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:53,246 INFO L129 PetriNetUnfolder]: 7884/20462 cut-off events. [2022-07-21 08:37:53,247 INFO L130 PetriNetUnfolder]: For 2365/2365 co-relation queries the response was YES. [2022-07-21 08:37:53,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33640 conditions, 20462 events. 7884/20462 cut-off events. For 2365/2365 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 230430 event pairs, 5220 based on Foata normal form. 0/17336 useless extension candidates. Maximal degree in co-relation 28763. Up to 7113 conditions per place. [2022-07-21 08:37:53,714 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2022-07-21 08:37:53,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 153 transitions, 440 flow [2022-07-21 08:37:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-07-21 08:37:53,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2022-07-21 08:37:53,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-07-21 08:37:53,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-07-21 08:37:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:53,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-07-21 08:37:53,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:53,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:53,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:53,717 INFO L186 Difference]: Start difference. First operand has 162 places, 144 transitions, 345 flow. Second operand 3 states and 428 transitions. [2022-07-21 08:37:53,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 153 transitions, 440 flow [2022-07-21 08:37:53,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:53,735 INFO L242 Difference]: Finished difference. Result has 161 places, 142 transitions, 341 flow [2022-07-21 08:37:53,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=161, PETRI_TRANSITIONS=142} [2022-07-21 08:37:53,736 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 3 predicate places. [2022-07-21 08:37:53,736 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 341 flow [2022-07-21 08:37:53,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:53,737 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:53,737 INFO L200 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:53,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:37:53,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:37:53,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -351366252, now seen corresponding path program 1 times [2022-07-21 08:37:53,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:53,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642581216] [2022-07-21 08:37:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:53,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:53,749 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:53,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:53,759 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:53,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-21 08:37:53,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-21 08:37:53,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-21 08:37:53,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-21 08:37:53,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-21 08:37:53,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-21 08:37:53,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-21 08:37:53,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:37:53,760 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:53,761 WARN L231 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:53,761 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-07-21 08:37:53,778 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:53,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 196 transitions, 452 flow [2022-07-21 08:37:53,797 INFO L129 PetriNetUnfolder]: 31/272 cut-off events. [2022-07-21 08:37:53,797 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-07-21 08:37:53,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 272 events. 31/272 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 749 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 250. Up to 14 conditions per place. [2022-07-21 08:37:53,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 196 transitions, 452 flow [2022-07-21 08:37:53,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 196 transitions, 452 flow [2022-07-21 08:37:53,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:53,802 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@146102ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e3276a8 [2022-07-21 08:37:53,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-21 08:37:53,805 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-21 08:37:53,805 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:37:53,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:53,806 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] [2022-07-21 08:37:53,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:37:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash 80089653, now seen corresponding path program 1 times [2022-07-21 08:37:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:53,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945051808] [2022-07-21 08:37:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:53,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:53,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945051808] [2022-07-21 08:37:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945051808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:53,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282428061] [2022-07-21 08:37:53,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:53,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:53,821 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 196 [2022-07-21 08:37:53,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 196 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:53,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:53,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 196 [2022-07-21 08:37:53,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:38:00,898 INFO L129 PetriNetUnfolder]: 20846/59256 cut-off events. [2022-07-21 08:38:00,899 INFO L130 PetriNetUnfolder]: For 43024/43024 co-relation queries the response was YES. [2022-07-21 08:38:01,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97577 conditions, 59256 events. 20846/59256 cut-off events. For 43024/43024 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 778656 event pairs, 11787 based on Foata normal form. 13219/65212 useless extension candidates. Maximal degree in co-relation 30505. Up to 15428 conditions per place. [2022-07-21 08:38:02,228 INFO L132 encePairwiseOnDemand]: 183/196 looper letters, 43 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2022-07-21 08:38:02,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 587 flow [2022-07-21 08:38:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:38:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:38:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-07-21 08:38:02,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8945578231292517 [2022-07-21 08:38:02,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-07-21 08:38:02,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-07-21 08:38:02,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:38:02,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-07-21 08:38:02,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:02,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:02,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:02,233 INFO L186 Difference]: Start difference. First operand has 184 places, 196 transitions, 452 flow. Second operand 3 states and 526 transitions. [2022-07-21 08:38:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 587 flow [2022-07-21 08:38:02,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 195 transitions, 537 flow, removed 25 selfloop flow, removed 0 redundant places. [2022-07-21 08:38:02,274 INFO L242 Difference]: Finished difference. Result has 176 places, 179 transitions, 408 flow [2022-07-21 08:38:02,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2022-07-21 08:38:02,275 INFO L279 CegarLoopForPetriNet]: 184 programPoint places, -8 predicate places. [2022-07-21 08:38:02,275 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 408 flow [2022-07-21 08:38:02,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:02,276 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:38:02,276 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] [2022-07-21 08:38:02,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 08:38:02,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:38:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:38:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash 80090676, now seen corresponding path program 1 times [2022-07-21 08:38:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:38:02,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030382066] [2022-07-21 08:38:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:38:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:38:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:38:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:38:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:38:02,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030382066] [2022-07-21 08:38:02,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030382066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:38:02,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:38:02,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:38:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717665529] [2022-07-21 08:38:02,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:38:02,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:38:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:38:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:38:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:38:02,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 196 [2022-07-21 08:38:02,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:02,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:38:02,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 196 [2022-07-21 08:38:02,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:38:06,961 INFO L129 PetriNetUnfolder]: 14221/38364 cut-off events. [2022-07-21 08:38:06,961 INFO L130 PetriNetUnfolder]: For 4051/4051 co-relation queries the response was YES. [2022-07-21 08:38:07,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59519 conditions, 38364 events. 14221/38364 cut-off events. For 4051/4051 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 465214 event pairs, 6927 based on Foata normal form. 0/34351 useless extension candidates. Maximal degree in co-relation 52197. Up to 9112 conditions per place. [2022-07-21 08:38:07,692 INFO L132 encePairwiseOnDemand]: 193/196 looper letters, 38 selfloop transitions, 2 changer transitions 0/195 dead transitions. [2022-07-21 08:38:07,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 195 transitions, 543 flow [2022-07-21 08:38:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:38:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:38:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2022-07-21 08:38:07,694 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-07-21 08:38:07,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2022-07-21 08:38:07,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2022-07-21 08:38:07,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:38:07,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2022-07-21 08:38:07,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:07,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:07,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:07,697 INFO L186 Difference]: Start difference. First operand has 176 places, 179 transitions, 408 flow. Second operand 3 states and 518 transitions. [2022-07-21 08:38:07,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 195 transitions, 543 flow [2022-07-21 08:38:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 195 transitions, 538 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:38:07,745 INFO L242 Difference]: Finished difference. Result has 179 places, 179 transitions, 413 flow [2022-07-21 08:38:07,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2022-07-21 08:38:07,746 INFO L279 CegarLoopForPetriNet]: 184 programPoint places, -5 predicate places. [2022-07-21 08:38:07,746 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 413 flow [2022-07-21 08:38:07,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:07,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:38:07,747 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] [2022-07-21 08:38:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 08:38:07,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:38:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:38:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash 81042965, now seen corresponding path program 1 times [2022-07-21 08:38:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:38:07,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861242776] [2022-07-21 08:38:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:38:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:38:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:38:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:38:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:38:07,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861242776] [2022-07-21 08:38:07,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861242776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:38:07,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:38:07,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:38:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463217946] [2022-07-21 08:38:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:38:07,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:38:07,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:38:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:38:07,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:38:07,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 196 [2022-07-21 08:38:07,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:38:07,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:38:07,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 196 [2022-07-21 08:38:07,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand