./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-6c24879 [2022-07-12 10:02:51,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:02:51,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:02:51,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:02:51,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:02:51,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:02:51,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:02:51,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:02:51,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:02:51,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:02:51,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:02:51,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:02:51,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:02:51,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:02:51,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:02:51,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:02:51,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:02:51,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:02:51,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:02:51,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:02:51,116 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:02:51,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:02:51,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:02:51,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:02:51,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:02:51,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:02:51,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:02:51,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:02:51,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:02:51,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:02:51,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:02:51,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:02:51,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:02:51,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:02:51,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:02:51,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:02:51,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:02:51,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:02:51,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:02:51,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:02:51,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:02:51,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:02:51,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:02:51,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:02:51,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:02:51,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:02:51,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:02:51,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:02:51,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:02:51,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:02:51,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:02:51,171 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:02:51,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:02:51,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:02:51,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:02:51,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:02:51,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:02:51,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:02:51,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:02:51,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:02:51,174 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:02:51,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:02:51,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:02:51,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:02:51,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:02:51,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:02:51,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:02:51,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:02:51,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:02:51,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:02:51,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:02:51,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:02:51,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:02:51,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:02:51,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:02:51,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:02:51,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-07-12 10:02:51,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:02:51,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:02:51,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:02:51,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:02:51,437 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:02:51,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-12 10:02:51,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562944480/43f2e8ad49154285a6616ac56dddc047/FLAG470935824 [2022-07-12 10:02:51,898 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:02:51,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-12 10:02:51,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562944480/43f2e8ad49154285a6616ac56dddc047/FLAG470935824 [2022-07-12 10:02:52,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562944480/43f2e8ad49154285a6616ac56dddc047 [2022-07-12 10:02:52,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:02:52,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:02:52,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:02:52,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:02:52,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:02:52,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a30069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52, skipping insertion in model container [2022-07-12 10:02:52,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:02:52,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:02:52,647 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] [2022-07-12 10:02:52,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:02:52,664 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:02:52,707 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] [2022-07-12 10:02:52,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:02:52,741 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:02:52,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52 WrapperNode [2022-07-12 10:02:52,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:02:52,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:02:52,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:02:52,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:02:52,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,798 INFO L137 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-07-12 10:02:52,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:02:52,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:02:52,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:02:52,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:02:52,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:02:52,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:02:52,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:02:52,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:02:52,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (1/1) ... [2022-07-12 10:02:52,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:02:52,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:02:52,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:02:52,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:02:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-12 10:02:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-12 10:02:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:02:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:02:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:02:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:02:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:02:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:02:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:02:52,928 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:02:53,055 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:02:53,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:02:53,193 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:02:53,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:02:53,225 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:02:53,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:02:53 BoogieIcfgContainer [2022-07-12 10:02:53,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:02:53,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:02:53,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:02:53,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:02:53,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:02:52" (1/3) ... [2022-07-12 10:02:53,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b3c55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:02:53, skipping insertion in model container [2022-07-12 10:02:53,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:02:52" (2/3) ... [2022-07-12 10:02:53,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b3c55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:02:53, skipping insertion in model container [2022-07-12 10:02:53,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:02:53" (3/3) ... [2022-07-12 10:02:53,241 INFO L111 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-07-12 10:02:53,253 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:02:53,262 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:02:53,263 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:02:53,263 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:02:53,304 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:02:53,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 117 flow [2022-07-12 10:02:53,380 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2022-07-12 10:02:53,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:02:53,384 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. [2022-07-12 10:02:53,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 117 flow [2022-07-12 10:02:53,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 117 flow [2022-07-12 10:02:53,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:02:53,403 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@535a04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698d3e32 [2022-07-12 10:02:53,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:02:53,413 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2022-07-12 10:02:53,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:02:53,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:53,414 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] [2022-07-12 10:02:53,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:02:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:53,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1552839894, now seen corresponding path program 1 times [2022-07-12 10:02:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:53,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165119975] [2022-07-12 10:02:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:53,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:02:53,548 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:02:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:02:53,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:02:53,591 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:02:53,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-12 10:02:53,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-12 10:02:53,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-12 10:02:53,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:02:53,594 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:02:53,597 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:02:53,598 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:02:53,630 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:02:53,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-07-12 10:02:53,657 INFO L129 PetriNetUnfolder]: 11/108 cut-off events. [2022-07-12 10:02:53,657 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:02:53,661 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. [2022-07-12 10:02:53,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 84 transitions, 180 flow [2022-07-12 10:02:53,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-07-12 10:02:53,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:02:53,666 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@535a04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698d3e32 [2022-07-12 10:02:53,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:02:53,678 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2022-07-12 10:02:53,679 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:02:53,679 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:53,679 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] [2022-07-12 10:02:53,679 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)] === [2022-07-12 10:02:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1549820851, now seen corresponding path program 1 times [2022-07-12 10:02:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:53,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869524258] [2022-07-12 10:02:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:02:53,706 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:02:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:02:53,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:02:53,728 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:02:53,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-12 10:02:53,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-12 10:02:53,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-12 10:02:53,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 10:02:53,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:02:53,730 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:02:53,731 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:02:53,731 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-12 10:02:53,752 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:02:53,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 245 flow [2022-07-12 10:02:53,785 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2022-07-12 10:02:53,786 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:02:53,788 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. [2022-07-12 10:02:53,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 245 flow [2022-07-12 10:02:53,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 245 flow [2022-07-12 10:02:53,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:02:53,795 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@535a04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698d3e32 [2022-07-12 10:02:53,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:02:53,807 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-12 10:02:53,807 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:02:53,808 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:53,808 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] [2022-07-12 10:02:53,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:02:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash 289875179, now seen corresponding path program 1 times [2022-07-12 10:02:53,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:53,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563267398] [2022-07-12 10:02:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563267398] [2022-07-12 10:02:53,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563267398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:53,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:53,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875992435] [2022-07-12 10:02:53,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:53,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:53,954 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-12 10:02:53,960 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) [2022-07-12 10:02:53,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:53,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-12 10:02:53,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:54,191 INFO L129 PetriNetUnfolder]: 199/815 cut-off events. [2022-07-12 10:02:54,191 INFO L130 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-07-12 10:02:54,199 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. [2022-07-12 10:02:54,206 INFO L132 encePairwiseOnDemand]: 104/112 looper letters, 20 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2022-07-12 10:02:54,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 291 flow [2022-07-12 10:02:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2022-07-12 10:02:54,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-07-12 10:02:54,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2022-07-12 10:02:54,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2022-07-12 10:02:54,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:54,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2022-07-12 10:02:54,237 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) [2022-07-12 10:02:54,242 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) [2022-07-12 10:02:54,243 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) [2022-07-12 10:02:54,244 INFO L186 Difference]: Start difference. First operand has 106 places, 112 transitions, 245 flow. Second operand 3 states and 303 transitions. [2022-07-12 10:02:54,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 291 flow [2022-07-12 10:02:54,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 283 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-12 10:02:54,255 INFO L242 Difference]: Finished difference. Result has 101 places, 100 transitions, 227 flow [2022-07-12 10:02:54,257 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} [2022-07-12 10:02:54,261 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2022-07-12 10:02:54,261 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 227 flow [2022-07-12 10:02:54,262 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) [2022-07-12 10:02:54,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:54,263 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] [2022-07-12 10:02:54,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:02:54,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:02:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 290827468, now seen corresponding path program 1 times [2022-07-12 10:02:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:54,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406711974] [2022-07-12 10:02:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:54,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406711974] [2022-07-12 10:02:54,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406711974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:54,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:54,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107836355] [2022-07-12 10:02:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:54,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:54,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:54,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-12 10:02:54,331 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) [2022-07-12 10:02:54,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:54,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-12 10:02:54,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:54,486 INFO L129 PetriNetUnfolder]: 186/802 cut-off events. [2022-07-12 10:02:54,486 INFO L130 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-07-12 10:02:54,491 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. [2022-07-12 10:02:54,497 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 20 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2022-07-12 10:02:54,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 287 flow [2022-07-12 10:02:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-07-12 10:02:54,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2022-07-12 10:02:54,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-07-12 10:02:54,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-07-12 10:02:54,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:54,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-07-12 10:02:54,503 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) [2022-07-12 10:02:54,505 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) [2022-07-12 10:02:54,506 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) [2022-07-12 10:02:54,506 INFO L186 Difference]: Start difference. First operand has 101 places, 100 transitions, 227 flow. Second operand 3 states and 292 transitions. [2022-07-12 10:02:54,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 287 flow [2022-07-12 10:02:54,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:54,511 INFO L242 Difference]: Finished difference. Result has 102 places, 99 transitions, 222 flow [2022-07-12 10:02:54,512 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} [2022-07-12 10:02:54,513 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-12 10:02:54,513 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 222 flow [2022-07-12 10:02:54,514 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) [2022-07-12 10:02:54,514 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:54,514 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] [2022-07-12 10:02:54,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:02:54,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:02:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 290828491, now seen corresponding path program 1 times [2022-07-12 10:02:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:54,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700046490] [2022-07-12 10:02:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:54,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700046490] [2022-07-12 10:02:54,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700046490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:54,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:54,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014486766] [2022-07-12 10:02:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:54,574 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-12 10:02:54,575 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) [2022-07-12 10:02:54,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:54,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-12 10:02:54,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:54,742 INFO L129 PetriNetUnfolder]: 276/1095 cut-off events. [2022-07-12 10:02:54,743 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-07-12 10:02:54,760 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. [2022-07-12 10:02:54,766 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 23 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-07-12 10:02:54,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 294 flow [2022-07-12 10:02:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-07-12 10:02:54,770 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8363095238095238 [2022-07-12 10:02:54,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-07-12 10:02:54,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-07-12 10:02:54,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:54,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-07-12 10:02:54,772 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) [2022-07-12 10:02:54,772 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) [2022-07-12 10:02:54,773 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) [2022-07-12 10:02:54,773 INFO L186 Difference]: Start difference. First operand has 102 places, 99 transitions, 222 flow. Second operand 3 states and 281 transitions. [2022-07-12 10:02:54,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 294 flow [2022-07-12 10:02:54,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:54,776 INFO L242 Difference]: Finished difference. Result has 103 places, 98 transitions, 223 flow [2022-07-12 10:02:54,777 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} [2022-07-12 10:02:54,777 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2022-07-12 10:02:54,778 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 223 flow [2022-07-12 10:02:54,778 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) [2022-07-12 10:02:54,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:54,778 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] [2022-07-12 10:02:54,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:02:54,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:02:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash 289874156, now seen corresponding path program 1 times [2022-07-12 10:02:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:54,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677114994] [2022-07-12 10:02:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:54,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:54,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677114994] [2022-07-12 10:02:54,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677114994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:54,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:54,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:54,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773907733] [2022-07-12 10:02:54,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:54,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:54,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:54,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:54,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-12 10:02:54,815 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) [2022-07-12 10:02:54,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:54,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-12 10:02:54,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:54,962 INFO L129 PetriNetUnfolder]: 258/1051 cut-off events. [2022-07-12 10:02:54,963 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-07-12 10:02:54,969 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. [2022-07-12 10:02:54,975 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 23 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2022-07-12 10:02:54,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 289 flow [2022-07-12 10:02:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-07-12 10:02:54,979 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-12 10:02:54,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-07-12 10:02:54,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-07-12 10:02:54,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:54,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-07-12 10:02:54,980 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) [2022-07-12 10:02:54,981 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) [2022-07-12 10:02:54,982 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) [2022-07-12 10:02:54,982 INFO L186 Difference]: Start difference. First operand has 103 places, 98 transitions, 223 flow. Second operand 3 states and 280 transitions. [2022-07-12 10:02:54,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 289 flow [2022-07-12 10:02:54,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:54,986 INFO L242 Difference]: Finished difference. Result has 102 places, 96 transitions, 218 flow [2022-07-12 10:02:54,986 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} [2022-07-12 10:02:54,988 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-12 10:02:54,989 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 218 flow [2022-07-12 10:02:54,989 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) [2022-07-12 10:02:54,989 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:54,989 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] [2022-07-12 10:02:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:02:54,990 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)] === [2022-07-12 10:02:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -337068427, now seen corresponding path program 1 times [2022-07-12 10:02:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:54,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283185893] [2022-07-12 10:02:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:02:55,023 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:02:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:02:55,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:02:55,059 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:02:55,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-12 10:02:55,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:02:55,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-12 10:02:55,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-12 10:02:55,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-12 10:02:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:02:55,060 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-12 10:02:55,061 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:02:55,061 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-12 10:02:55,091 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:02:55,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 140 transitions, 312 flow [2022-07-12 10:02:55,126 INFO L129 PetriNetUnfolder]: 21/190 cut-off events. [2022-07-12 10:02:55,127 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:02:55,128 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. [2022-07-12 10:02:55,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 140 transitions, 312 flow [2022-07-12 10:02:55,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 312 flow [2022-07-12 10:02:55,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:02:55,132 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@535a04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698d3e32 [2022-07-12 10:02:55,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-12 10:02:55,146 INFO L129 PetriNetUnfolder]: 8/90 cut-off events. [2022-07-12 10:02:55,146 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:02:55,146 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:55,147 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] [2022-07-12 10:02:55,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1049301266, now seen corresponding path program 1 times [2022-07-12 10:02:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210178710] [2022-07-12 10:02:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:55,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:55,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210178710] [2022-07-12 10:02:55,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210178710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:55,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:55,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364057591] [2022-07-12 10:02:55,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:55,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:55,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:55,208 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-12 10:02:55,209 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) [2022-07-12 10:02:55,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:55,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-12 10:02:55,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:55,726 INFO L129 PetriNetUnfolder]: 904/3181 cut-off events. [2022-07-12 10:02:55,727 INFO L130 PetriNetUnfolder]: For 1276/1276 co-relation queries the response was YES. [2022-07-12 10:02:55,751 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. [2022-07-12 10:02:55,780 INFO L132 encePairwiseOnDemand]: 131/140 looper letters, 26 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-12 10:02:55,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 136 transitions, 381 flow [2022-07-12 10:02:55,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-07-12 10:02:55,782 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-07-12 10:02:55,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-07-12 10:02:55,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-07-12 10:02:55,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:55,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-07-12 10:02:55,784 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) [2022-07-12 10:02:55,785 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) [2022-07-12 10:02:55,785 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) [2022-07-12 10:02:55,786 INFO L186 Difference]: Start difference. First operand has 132 places, 140 transitions, 312 flow. Second operand 3 states and 380 transitions. [2022-07-12 10:02:55,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 136 transitions, 381 flow [2022-07-12 10:02:55,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 136 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-12 10:02:55,792 INFO L242 Difference]: Finished difference. Result has 126 places, 126 transitions, 284 flow [2022-07-12 10:02:55,793 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} [2022-07-12 10:02:55,795 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2022-07-12 10:02:55,796 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 284 flow [2022-07-12 10:02:55,796 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) [2022-07-12 10:02:55,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:55,796 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:02:55,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:02:55,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1050253555, now seen corresponding path program 1 times [2022-07-12 10:02:55,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:55,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493234011] [2022-07-12 10:02:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:55,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493234011] [2022-07-12 10:02:55,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493234011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:55,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:55,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662130135] [2022-07-12 10:02:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:55,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-12 10:02:55,858 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) [2022-07-12 10:02:55,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:55,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-12 10:02:55,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:56,319 INFO L129 PetriNetUnfolder]: 864/3141 cut-off events. [2022-07-12 10:02:56,320 INFO L130 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-07-12 10:02:56,343 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. [2022-07-12 10:02:56,364 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 26 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2022-07-12 10:02:56,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 367 flow [2022-07-12 10:02:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-12 10:02:56,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-12 10:02:56,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-12 10:02:56,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-12 10:02:56,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:56,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-12 10:02:56,368 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) [2022-07-12 10:02:56,369 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) [2022-07-12 10:02:56,370 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) [2022-07-12 10:02:56,370 INFO L186 Difference]: Start difference. First operand has 126 places, 126 transitions, 284 flow. Second operand 3 states and 367 transitions. [2022-07-12 10:02:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 367 flow [2022-07-12 10:02:56,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 135 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:56,374 INFO L242 Difference]: Finished difference. Result has 127 places, 125 transitions, 279 flow [2022-07-12 10:02:56,374 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} [2022-07-12 10:02:56,376 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-12 10:02:56,376 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 279 flow [2022-07-12 10:02:56,377 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) [2022-07-12 10:02:56,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:56,377 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] [2022-07-12 10:02:56,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:02:56,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1050254578, now seen corresponding path program 1 times [2022-07-12 10:02:56,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:56,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650948531] [2022-07-12 10:02:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:56,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:56,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650948531] [2022-07-12 10:02:56,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650948531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:56,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:56,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059440034] [2022-07-12 10:02:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:56,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-12 10:02:56,422 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) [2022-07-12 10:02:56,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:56,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-12 10:02:56,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:56,994 INFO L129 PetriNetUnfolder]: 1281/4525 cut-off events. [2022-07-12 10:02:56,995 INFO L130 PetriNetUnfolder]: For 508/508 co-relation queries the response was YES. [2022-07-12 10:02:57,025 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. [2022-07-12 10:02:57,085 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 29 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-12 10:02:57,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 374 flow [2022-07-12 10:02:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-07-12 10:02:57,087 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8476190476190476 [2022-07-12 10:02:57,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-07-12 10:02:57,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-07-12 10:02:57,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:57,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-07-12 10:02:57,089 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) [2022-07-12 10:02:57,090 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) [2022-07-12 10:02:57,090 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) [2022-07-12 10:02:57,090 INFO L186 Difference]: Start difference. First operand has 127 places, 125 transitions, 279 flow. Second operand 3 states and 356 transitions. [2022-07-12 10:02:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 374 flow [2022-07-12 10:02:57,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:57,095 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 280 flow [2022-07-12 10:02:57,096 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} [2022-07-12 10:02:57,096 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2022-07-12 10:02:57,096 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 280 flow [2022-07-12 10:02:57,097 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) [2022-07-12 10:02:57,097 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:57,097 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] [2022-07-12 10:02:57,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:02:57,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:57,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1049300243, now seen corresponding path program 1 times [2022-07-12 10:02:57,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:57,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777352539] [2022-07-12 10:02:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:02:57,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:57,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777352539] [2022-07-12 10:02:57,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777352539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:57,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:57,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068665148] [2022-07-12 10:02:57,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:57,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:57,139 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-12 10:02:57,139 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) [2022-07-12 10:02:57,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:57,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-12 10:02:57,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:57,718 INFO L129 PetriNetUnfolder]: 1200/4364 cut-off events. [2022-07-12 10:02:57,719 INFO L130 PetriNetUnfolder]: For 539/539 co-relation queries the response was YES. [2022-07-12 10:02:57,754 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. [2022-07-12 10:02:57,789 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 29 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2022-07-12 10:02:57,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 369 flow [2022-07-12 10:02:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-07-12 10:02:57,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-12 10:02:57,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-07-12 10:02:57,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-07-12 10:02:57,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:57,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-07-12 10:02:57,793 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) [2022-07-12 10:02:57,794 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) [2022-07-12 10:02:57,794 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) [2022-07-12 10:02:57,794 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 280 flow. Second operand 3 states and 355 transitions. [2022-07-12 10:02:57,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 369 flow [2022-07-12 10:02:57,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:57,799 INFO L242 Difference]: Finished difference. Result has 127 places, 122 transitions, 275 flow [2022-07-12 10:02:57,799 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} [2022-07-12 10:02:57,800 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-12 10:02:57,800 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 275 flow [2022-07-12 10:02:57,801 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) [2022-07-12 10:02:57,801 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:57,801 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] [2022-07-12 10:02:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:02:57,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -344456956, now seen corresponding path program 1 times [2022-07-12 10:02:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771931805] [2022-07-12 10:02:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:02:57,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:57,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771931805] [2022-07-12 10:02:57,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771931805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:57,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:57,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:57,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434981575] [2022-07-12 10:02:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:57,841 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-12 10:02:57,842 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) [2022-07-12 10:02:57,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:57,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-12 10:02:57,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:58,480 INFO L129 PetriNetUnfolder]: 1850/5480 cut-off events. [2022-07-12 10:02:58,480 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-07-12 10:02:58,526 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. [2022-07-12 10:02:58,608 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 30 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2022-07-12 10:02:58,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 373 flow [2022-07-12 10:02:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-07-12 10:02:58,611 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-07-12 10:02:58,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-07-12 10:02:58,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-07-12 10:02:58,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:58,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-07-12 10:02:58,612 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) [2022-07-12 10:02:58,615 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) [2022-07-12 10:02:58,615 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) [2022-07-12 10:02:58,615 INFO L186 Difference]: Start difference. First operand has 127 places, 122 transitions, 275 flow. Second operand 3 states and 359 transitions. [2022-07-12 10:02:58,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 373 flow [2022-07-12 10:02:58,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:58,619 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 298 flow [2022-07-12 10:02:58,619 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} [2022-07-12 10:02:58,620 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2022-07-12 10:02:58,620 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 298 flow [2022-07-12 10:02:58,621 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) [2022-07-12 10:02:58,621 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:58,621 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] [2022-07-12 10:02:58,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:02:58,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash -344455933, now seen corresponding path program 1 times [2022-07-12 10:02:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:58,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950493979] [2022-07-12 10:02:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:02:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:58,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950493979] [2022-07-12 10:02:58,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950493979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:58,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:58,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980955915] [2022-07-12 10:02:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:58,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-12 10:02:58,660 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) [2022-07-12 10:02:58,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:58,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-12 10:02:58,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:59,144 INFO L129 PetriNetUnfolder]: 1258/3752 cut-off events. [2022-07-12 10:02:59,145 INFO L130 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-07-12 10:02:59,164 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. [2022-07-12 10:02:59,183 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 25 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-07-12 10:02:59,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 378 flow [2022-07-12 10:02:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:59,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-12 10:02:59,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-12 10:02:59,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-12 10:02:59,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-12 10:02:59,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:59,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-12 10:02:59,187 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) [2022-07-12 10:02:59,188 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) [2022-07-12 10:02:59,188 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) [2022-07-12 10:02:59,188 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 298 flow. Second operand 3 states and 367 transitions. [2022-07-12 10:02:59,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 378 flow [2022-07-12 10:02:59,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 373 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:02:59,207 INFO L242 Difference]: Finished difference. Result has 133 places, 124 transitions, 303 flow [2022-07-12 10:02:59,208 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} [2022-07-12 10:02:59,208 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2022-07-12 10:02:59,209 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 124 transitions, 303 flow [2022-07-12 10:02:59,209 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) [2022-07-12 10:02:59,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:59,209 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] [2022-07-12 10:02:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:02:59,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -343503644, now seen corresponding path program 1 times [2022-07-12 10:02:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550525084] [2022-07-12 10:02:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:02:59,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550525084] [2022-07-12 10:02:59,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550525084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:59,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:59,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296117802] [2022-07-12 10:02:59,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:59,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:59,245 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-12 10:02:59,245 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) [2022-07-12 10:02:59,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:59,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-12 10:02:59,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:02:59,685 INFO L129 PetriNetUnfolder]: 1095/3433 cut-off events. [2022-07-12 10:02:59,685 INFO L130 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2022-07-12 10:02:59,707 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. [2022-07-12 10:02:59,727 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 25 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2022-07-12 10:02:59,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 368 flow [2022-07-12 10:02:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:02:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:02:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-07-12 10:02:59,730 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-07-12 10:02:59,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-07-12 10:02:59,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-07-12 10:02:59,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:02:59,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-07-12 10:02:59,731 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) [2022-07-12 10:02:59,732 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) [2022-07-12 10:02:59,733 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) [2022-07-12 10:02:59,733 INFO L186 Difference]: Start difference. First operand has 133 places, 124 transitions, 303 flow. Second operand 3 states and 366 transitions. [2022-07-12 10:02:59,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 368 flow [2022-07-12 10:02:59,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 361 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-12 10:02:59,741 INFO L242 Difference]: Finished difference. Result has 132 places, 121 transitions, 283 flow [2022-07-12 10:02:59,741 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} [2022-07-12 10:02:59,742 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2022-07-12 10:02:59,742 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 283 flow [2022-07-12 10:02:59,742 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) [2022-07-12 10:02:59,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:02:59,743 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] [2022-07-12 10:02:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:02:59,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:02:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:02:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -343502621, now seen corresponding path program 1 times [2022-07-12 10:02:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:02:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146087354] [2022-07-12 10:02:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:02:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:02:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:02:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:02:59,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:02:59,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146087354] [2022-07-12 10:02:59,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146087354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:02:59,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:02:59,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:02:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742985117] [2022-07-12 10:02:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:02:59,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:02:59,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:02:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:02:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:02:59,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-12 10:02:59,774 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) [2022-07-12 10:02:59,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:02:59,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-12 10:02:59,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:00,396 INFO L129 PetriNetUnfolder]: 1500/4650 cut-off events. [2022-07-12 10:03:00,396 INFO L130 PetriNetUnfolder]: For 589/589 co-relation queries the response was YES. [2022-07-12 10:03:00,435 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. [2022-07-12 10:03:00,465 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 28 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2022-07-12 10:03:00,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 364 flow [2022-07-12 10:03:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-07-12 10:03:00,467 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-07-12 10:03:00,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-07-12 10:03:00,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-07-12 10:03:00,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:00,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-07-12 10:03:00,468 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) [2022-07-12 10:03:00,469 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) [2022-07-12 10:03:00,469 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) [2022-07-12 10:03:00,469 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 283 flow. Second operand 3 states and 354 transitions. [2022-07-12 10:03:00,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 364 flow [2022-07-12 10:03:00,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 363 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:00,474 INFO L242 Difference]: Finished difference. Result has 131 places, 119 transitions, 279 flow [2022-07-12 10:03:00,474 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} [2022-07-12 10:03:00,475 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2022-07-12 10:03:00,475 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 279 flow [2022-07-12 10:03:00,475 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) [2022-07-12 10:03:00,475 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:00,476 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] [2022-07-12 10:03:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:03:00,476 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)] === [2022-07-12 10:03:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1821018244, now seen corresponding path program 1 times [2022-07-12 10:03:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:00,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849736227] [2022-07-12 10:03:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:00,492 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:00,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:00,520 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:00,520 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-12 10:03:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-12 10:03:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-12 10:03:00,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-12 10:03:00,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-12 10:03:00,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-12 10:03:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:03:00,521 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:03:00,522 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:00,522 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-12 10:03:00,571 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:00,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 168 transitions, 381 flow [2022-07-12 10:03:00,603 INFO L129 PetriNetUnfolder]: 26/231 cut-off events. [2022-07-12 10:03:00,604 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-12 10:03:00,606 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. [2022-07-12 10:03:00,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 168 transitions, 381 flow [2022-07-12 10:03:00,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 168 transitions, 381 flow [2022-07-12 10:03:00,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:00,612 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@535a04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698d3e32 [2022-07-12 10:03:00,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:03:00,617 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2022-07-12 10:03:00,618 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:03:00,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:00,618 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] [2022-07-12 10:03:00,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash 47724502, now seen corresponding path program 1 times [2022-07-12 10:03:00,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:00,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539870260] [2022-07-12 10:03:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:00,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539870260] [2022-07-12 10:03:00,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539870260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:00,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:00,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214297246] [2022-07-12 10:03:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:00,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:00,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-12 10:03:00,646 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) [2022-07-12 10:03:00,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:00,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-12 10:03:00,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:02,920 INFO L129 PetriNetUnfolder]: 5732/17923 cut-off events. [2022-07-12 10:03:02,920 INFO L130 PetriNetUnfolder]: For 9815/9815 co-relation queries the response was YES. [2022-07-12 10:03:03,019 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. [2022-07-12 10:03:03,135 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 37 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2022-07-12 10:03:03,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 166 transitions, 489 flow [2022-07-12 10:03:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-07-12 10:03:03,138 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8908730158730159 [2022-07-12 10:03:03,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-07-12 10:03:03,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-07-12 10:03:03,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:03,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-07-12 10:03:03,140 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) [2022-07-12 10:03:03,141 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) [2022-07-12 10:03:03,141 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) [2022-07-12 10:03:03,142 INFO L186 Difference]: Start difference. First operand has 158 places, 168 transitions, 381 flow. Second operand 3 states and 449 transitions. [2022-07-12 10:03:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 166 transitions, 489 flow [2022-07-12 10:03:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 166 transitions, 457 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-07-12 10:03:03,150 INFO L242 Difference]: Finished difference. Result has 151 places, 153 transitions, 351 flow [2022-07-12 10:03:03,150 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} [2022-07-12 10:03:03,151 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -7 predicate places. [2022-07-12 10:03:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 351 flow [2022-07-12 10:03:03,151 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) [2022-07-12 10:03:03,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:03,151 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] [2022-07-12 10:03:03,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:03:03,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 48677814, now seen corresponding path program 1 times [2022-07-12 10:03:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:03,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190573167] [2022-07-12 10:03:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:03,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:03,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:03,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190573167] [2022-07-12 10:03:03,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190573167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:03,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:03,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377537110] [2022-07-12 10:03:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:03,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:03,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:03,173 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-12 10:03:03,174 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) [2022-07-12 10:03:03,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:03,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-12 10:03:03,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:04,755 INFO L129 PetriNetUnfolder]: 3846/12345 cut-off events. [2022-07-12 10:03:04,755 INFO L130 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2022-07-12 10:03:04,815 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. [2022-07-12 10:03:04,873 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/165 dead transitions. [2022-07-12 10:03:04,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 165 transitions, 457 flow [2022-07-12 10:03:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-07-12 10:03:04,876 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.878968253968254 [2022-07-12 10:03:04,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-07-12 10:03:04,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-07-12 10:03:04,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:04,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-07-12 10:03:04,879 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) [2022-07-12 10:03:04,882 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) [2022-07-12 10:03:04,883 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) [2022-07-12 10:03:04,883 INFO L186 Difference]: Start difference. First operand has 151 places, 153 transitions, 351 flow. Second operand 3 states and 443 transitions. [2022-07-12 10:03:04,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 165 transitions, 457 flow [2022-07-12 10:03:04,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 165 transitions, 453 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:04,893 INFO L242 Difference]: Finished difference. Result has 153 places, 151 transitions, 342 flow [2022-07-12 10:03:04,893 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} [2022-07-12 10:03:04,893 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-12 10:03:04,894 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 342 flow [2022-07-12 10:03:04,894 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) [2022-07-12 10:03:04,894 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:04,894 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] [2022-07-12 10:03:04,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:03:04,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 48678837, now seen corresponding path program 1 times [2022-07-12 10:03:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:04,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154575630] [2022-07-12 10:03:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:04,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154575630] [2022-07-12 10:03:04,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154575630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:04,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:04,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:04,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247474009] [2022-07-12 10:03:04,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:04,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:04,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:04,926 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-12 10:03:04,926 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) [2022-07-12 10:03:04,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:04,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-12 10:03:04,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:06,821 INFO L129 PetriNetUnfolder]: 5166/16994 cut-off events. [2022-07-12 10:03:06,821 INFO L130 PetriNetUnfolder]: For 2032/2032 co-relation queries the response was YES. [2022-07-12 10:03:06,925 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. [2022-07-12 10:03:07,025 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 36 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-07-12 10:03:07,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 163 transitions, 457 flow [2022-07-12 10:03:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-12 10:03:07,027 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-12 10:03:07,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-12 10:03:07,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-12 10:03:07,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:07,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-12 10:03:07,028 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) [2022-07-12 10:03:07,029 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) [2022-07-12 10:03:07,029 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) [2022-07-12 10:03:07,029 INFO L186 Difference]: Start difference. First operand has 153 places, 151 transitions, 342 flow. Second operand 3 states and 431 transitions. [2022-07-12 10:03:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 163 transitions, 457 flow [2022-07-12 10:03:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:07,046 INFO L242 Difference]: Finished difference. Result has 154 places, 150 transitions, 338 flow [2022-07-12 10:03:07,046 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} [2022-07-12 10:03:07,047 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -4 predicate places. [2022-07-12 10:03:07,047 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 338 flow [2022-07-12 10:03:07,048 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) [2022-07-12 10:03:07,048 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:07,049 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] [2022-07-12 10:03:07,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:03:07,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash 47725525, now seen corresponding path program 1 times [2022-07-12 10:03:07,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:07,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928812542] [2022-07-12 10:03:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:07,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928812542] [2022-07-12 10:03:07,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928812542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:07,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:07,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156536532] [2022-07-12 10:03:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:07,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:07,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-12 10:03:07,082 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) [2022-07-12 10:03:07,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:07,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-12 10:03:07,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:08,297 INFO L129 PetriNetUnfolder]: 3432/10702 cut-off events. [2022-07-12 10:03:08,297 INFO L130 PetriNetUnfolder]: For 1202/1202 co-relation queries the response was YES. [2022-07-12 10:03:08,358 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. [2022-07-12 10:03:08,407 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-12 10:03:08,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 161 transitions, 444 flow [2022-07-12 10:03:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-12 10:03:08,411 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-12 10:03:08,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-12 10:03:08,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-12 10:03:08,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:08,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-12 10:03:08,413 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) [2022-07-12 10:03:08,414 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) [2022-07-12 10:03:08,415 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) [2022-07-12 10:03:08,415 INFO L186 Difference]: Start difference. First operand has 154 places, 150 transitions, 338 flow. Second operand 3 states and 442 transitions. [2022-07-12 10:03:08,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 161 transitions, 444 flow [2022-07-12 10:03:08,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 440 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-12 10:03:08,421 INFO L242 Difference]: Finished difference. Result has 153 places, 148 transitions, 333 flow [2022-07-12 10:03:08,421 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} [2022-07-12 10:03:08,422 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-12 10:03:08,422 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 333 flow [2022-07-12 10:03:08,422 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) [2022-07-12 10:03:08,423 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:08,423 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] [2022-07-12 10:03:08,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:03:08,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash -985739132, now seen corresponding path program 1 times [2022-07-12 10:03:08,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:08,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010728440] [2022-07-12 10:03:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:08,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:03:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:08,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010728440] [2022-07-12 10:03:08,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010728440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:08,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:08,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:08,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596206545] [2022-07-12 10:03:08,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:08,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:08,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:08,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:08,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:08,445 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-12 10:03:08,446 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) [2022-07-12 10:03:08,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:08,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-12 10:03:08,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:10,138 INFO L129 PetriNetUnfolder]: 5228/15122 cut-off events. [2022-07-12 10:03:10,138 INFO L130 PetriNetUnfolder]: For 1574/1574 co-relation queries the response was YES. [2022-07-12 10:03:10,249 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. [2022-07-12 10:03:10,465 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-12 10:03:10,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 161 transitions, 440 flow [2022-07-12 10:03:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-12 10:03:10,467 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-12 10:03:10,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-12 10:03:10,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-12 10:03:10,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:10,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-12 10:03:10,468 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) [2022-07-12 10:03:10,469 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) [2022-07-12 10:03:10,469 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) [2022-07-12 10:03:10,470 INFO L186 Difference]: Start difference. First operand has 153 places, 148 transitions, 333 flow. Second operand 3 states and 442 transitions. [2022-07-12 10:03:10,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 161 transitions, 440 flow [2022-07-12 10:03:10,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:10,473 INFO L242 Difference]: Finished difference. Result has 155 places, 148 transitions, 337 flow [2022-07-12 10:03:10,474 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} [2022-07-12 10:03:10,474 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -3 predicate places. [2022-07-12 10:03:10,474 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 337 flow [2022-07-12 10:03:10,475 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) [2022-07-12 10:03:10,475 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:10,475 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] [2022-07-12 10:03:10,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:03:10,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash -985738109, now seen corresponding path program 1 times [2022-07-12 10:03:10,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:10,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783401380] [2022-07-12 10:03:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:03:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:10,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783401380] [2022-07-12 10:03:10,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783401380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:10,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:10,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:10,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496457738] [2022-07-12 10:03:10,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:10,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:10,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:10,499 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-12 10:03:10,499 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) [2022-07-12 10:03:10,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:10,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-12 10:03:10,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:12,921 INFO L129 PetriNetUnfolder]: 8136/23042 cut-off events. [2022-07-12 10:03:12,921 INFO L130 PetriNetUnfolder]: For 2669/2669 co-relation queries the response was YES. [2022-07-12 10:03:13,076 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. [2022-07-12 10:03:13,213 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 35 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2022-07-12 10:03:13,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 161 transitions, 454 flow [2022-07-12 10:03:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-07-12 10:03:13,215 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-07-12 10:03:13,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-07-12 10:03:13,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-07-12 10:03:13,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:13,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-07-12 10:03:13,216 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) [2022-07-12 10:03:13,217 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) [2022-07-12 10:03:13,217 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) [2022-07-12 10:03:13,218 INFO L186 Difference]: Start difference. First operand has 155 places, 148 transitions, 337 flow. Second operand 3 states and 432 transitions. [2022-07-12 10:03:13,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 161 transitions, 454 flow [2022-07-12 10:03:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 161 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:13,235 INFO L242 Difference]: Finished difference. Result has 158 places, 149 transitions, 354 flow [2022-07-12 10:03:13,236 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} [2022-07-12 10:03:13,236 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-12 10:03:13,236 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 149 transitions, 354 flow [2022-07-12 10:03:13,237 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) [2022-07-12 10:03:13,237 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:13,237 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] [2022-07-12 10:03:13,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:03:13,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash -986691421, now seen corresponding path program 1 times [2022-07-12 10:03:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:13,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656757289] [2022-07-12 10:03:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:03:13,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:13,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656757289] [2022-07-12 10:03:13,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656757289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:13,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:13,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015189869] [2022-07-12 10:03:13,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:13,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:13,265 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-12 10:03:13,265 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) [2022-07-12 10:03:13,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:13,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-12 10:03:13,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:14,722 INFO L129 PetriNetUnfolder]: 4536/13446 cut-off events. [2022-07-12 10:03:14,723 INFO L130 PetriNetUnfolder]: For 1777/1777 co-relation queries the response was YES. [2022-07-12 10:03:14,829 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. [2022-07-12 10:03:15,071 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 31 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2022-07-12 10:03:15,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 447 flow [2022-07-12 10:03:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-12 10:03:15,073 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-12 10:03:15,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-12 10:03:15,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-12 10:03:15,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:15,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-12 10:03:15,074 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) [2022-07-12 10:03:15,076 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) [2022-07-12 10:03:15,076 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) [2022-07-12 10:03:15,076 INFO L186 Difference]: Start difference. First operand has 158 places, 149 transitions, 354 flow. Second operand 3 states and 441 transitions. [2022-07-12 10:03:15,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 447 flow [2022-07-12 10:03:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 159 transitions, 439 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-12 10:03:15,100 INFO L242 Difference]: Finished difference. Result has 158 places, 147 transitions, 341 flow [2022-07-12 10:03:15,100 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} [2022-07-12 10:03:15,101 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-12 10:03:15,101 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 341 flow [2022-07-12 10:03:15,101 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) [2022-07-12 10:03:15,101 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:15,101 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] [2022-07-12 10:03:15,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:03:15,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash -986692444, now seen corresponding path program 1 times [2022-07-12 10:03:15,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:15,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494334965] [2022-07-12 10:03:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:15,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:03:15,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494334965] [2022-07-12 10:03:15,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494334965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:15,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:15,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583743660] [2022-07-12 10:03:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:15,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:15,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:15,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-12 10:03:15,125 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) [2022-07-12 10:03:15,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:15,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-12 10:03:15,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:17,221 INFO L129 PetriNetUnfolder]: 6240/18874 cut-off events. [2022-07-12 10:03:17,221 INFO L130 PetriNetUnfolder]: For 2045/2045 co-relation queries the response was YES. [2022-07-12 10:03:17,338 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. [2022-07-12 10:03:17,440 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 34 selfloop transitions, 1 changer transitions 0/157 dead transitions. [2022-07-12 10:03:17,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 445 flow [2022-07-12 10:03:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-07-12 10:03:17,443 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-07-12 10:03:17,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-07-12 10:03:17,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-07-12 10:03:17,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:17,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-07-12 10:03:17,445 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) [2022-07-12 10:03:17,446 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) [2022-07-12 10:03:17,446 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) [2022-07-12 10:03:17,446 INFO L186 Difference]: Start difference. First operand has 158 places, 147 transitions, 341 flow. Second operand 3 states and 429 transitions. [2022-07-12 10:03:17,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 445 flow [2022-07-12 10:03:17,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:17,473 INFO L242 Difference]: Finished difference. Result has 157 places, 145 transitions, 337 flow [2022-07-12 10:03:17,474 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} [2022-07-12 10:03:17,474 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -1 predicate places. [2022-07-12 10:03:17,474 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 337 flow [2022-07-12 10:03:17,475 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) [2022-07-12 10:03:17,475 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:17,475 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] [2022-07-12 10:03:17,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:03:17,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1011929366, now seen corresponding path program 1 times [2022-07-12 10:03:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:17,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068483752] [2022-07-12 10:03:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:03:17,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:17,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068483752] [2022-07-12 10:03:17,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068483752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:17,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:17,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:17,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452793544] [2022-07-12 10:03:17,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:17,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:17,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:17,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:17,502 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-12 10:03:17,506 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) [2022-07-12 10:03:17,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:17,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-12 10:03:17,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:19,486 INFO L129 PetriNetUnfolder]: 6004/15750 cut-off events. [2022-07-12 10:03:19,487 INFO L130 PetriNetUnfolder]: For 1789/1789 co-relation queries the response was YES. [2022-07-12 10:03:19,569 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. [2022-07-12 10:03:19,639 INFO L132 encePairwiseOnDemand]: 165/168 looper letters, 30 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-07-12 10:03:19,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 435 flow [2022-07-12 10:03:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-12 10:03:19,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-12 10:03:19,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-12 10:03:19,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-12 10:03:19,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:19,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-12 10:03:19,642 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) [2022-07-12 10:03:19,643 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) [2022-07-12 10:03:19,643 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) [2022-07-12 10:03:19,644 INFO L186 Difference]: Start difference. First operand has 157 places, 145 transitions, 337 flow. Second operand 3 states and 441 transitions. [2022-07-12 10:03:19,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 435 flow [2022-07-12 10:03:19,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:19,647 INFO L242 Difference]: Finished difference. Result has 160 places, 146 transitions, 350 flow [2022-07-12 10:03:19,647 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} [2022-07-12 10:03:19,648 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 2 predicate places. [2022-07-12 10:03:19,648 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 350 flow [2022-07-12 10:03:19,648 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) [2022-07-12 10:03:19,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:19,649 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] [2022-07-12 10:03:19,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:03:19,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1011928343, now seen corresponding path program 1 times [2022-07-12 10:03:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:19,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608062411] [2022-07-12 10:03:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:19,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:03:19,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:19,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608062411] [2022-07-12 10:03:19,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608062411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:19,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:19,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809441679] [2022-07-12 10:03:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:19,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-12 10:03:19,694 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) [2022-07-12 10:03:19,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:19,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-12 10:03:19,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:22,301 INFO L129 PetriNetUnfolder]: 9388/23678 cut-off events. [2022-07-12 10:03:22,301 INFO L130 PetriNetUnfolder]: For 3069/3069 co-relation queries the response was YES. [2022-07-12 10:03:22,454 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. [2022-07-12 10:03:22,595 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 34 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2022-07-12 10:03:22,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 158 transitions, 458 flow [2022-07-12 10:03:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-12 10:03:22,597 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-12 10:03:22,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-12 10:03:22,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-12 10:03:22,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:22,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-12 10:03:22,599 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) [2022-07-12 10:03:22,600 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) [2022-07-12 10:03:22,600 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) [2022-07-12 10:03:22,600 INFO L186 Difference]: Start difference. First operand has 160 places, 146 transitions, 350 flow. Second operand 3 states and 431 transitions. [2022-07-12 10:03:22,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 158 transitions, 458 flow [2022-07-12 10:03:22,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:22,633 INFO L242 Difference]: Finished difference. Result has 163 places, 147 transitions, 366 flow [2022-07-12 10:03:22,634 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} [2022-07-12 10:03:22,634 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 5 predicate places. [2022-07-12 10:03:22,634 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 366 flow [2022-07-12 10:03:22,634 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) [2022-07-12 10:03:22,634 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:22,634 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] [2022-07-12 10:03:22,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:03:22,635 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:22,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:22,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1012881655, now seen corresponding path program 1 times [2022-07-12 10:03:22,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:22,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308527836] [2022-07-12 10:03:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:22,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:03:22,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308527836] [2022-07-12 10:03:22,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308527836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:22,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:22,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662160357] [2022-07-12 10:03:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:22,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:22,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:22,663 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-12 10:03:22,663 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) [2022-07-12 10:03:22,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:22,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-12 10:03:22,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:24,485 INFO L129 PetriNetUnfolder]: 5796/15126 cut-off events. [2022-07-12 10:03:24,485 INFO L130 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2022-07-12 10:03:24,584 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. [2022-07-12 10:03:24,658 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 30 selfloop transitions, 1 changer transitions 0/155 dead transitions. [2022-07-12 10:03:24,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 155 transitions, 445 flow [2022-07-12 10:03:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-07-12 10:03:24,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-07-12 10:03:24,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-07-12 10:03:24,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-07-12 10:03:24,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:24,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-07-12 10:03:24,661 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) [2022-07-12 10:03:24,662 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) [2022-07-12 10:03:24,662 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) [2022-07-12 10:03:24,662 INFO L186 Difference]: Start difference. First operand has 163 places, 147 transitions, 366 flow. Second operand 3 states and 440 transitions. [2022-07-12 10:03:24,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 155 transitions, 445 flow [2022-07-12 10:03:24,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 437 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-12 10:03:24,708 INFO L242 Difference]: Finished difference. Result has 162 places, 144 transitions, 345 flow [2022-07-12 10:03:24,708 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} [2022-07-12 10:03:24,709 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 4 predicate places. [2022-07-12 10:03:24,709 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 345 flow [2022-07-12 10:03:24,709 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) [2022-07-12 10:03:24,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:24,710 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] [2022-07-12 10:03:24,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:03:24,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:03:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1012882678, now seen corresponding path program 1 times [2022-07-12 10:03:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:24,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287905785] [2022-07-12 10:03:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:03:24,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:24,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287905785] [2022-07-12 10:03:24,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287905785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:24,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:24,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:24,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232787307] [2022-07-12 10:03:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:24,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:24,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:24,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:24,732 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-12 10:03:24,732 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) [2022-07-12 10:03:24,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:24,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-12 10:03:24,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:27,048 INFO L129 PetriNetUnfolder]: 7884/20462 cut-off events. [2022-07-12 10:03:27,049 INFO L130 PetriNetUnfolder]: For 2365/2365 co-relation queries the response was YES. [2022-07-12 10:03:27,216 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. [2022-07-12 10:03:27,341 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2022-07-12 10:03:27,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 153 transitions, 440 flow [2022-07-12 10:03:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-07-12 10:03:27,343 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2022-07-12 10:03:27,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-07-12 10:03:27,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-07-12 10:03:27,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:27,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-07-12 10:03:27,345 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) [2022-07-12 10:03:27,346 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) [2022-07-12 10:03:27,346 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) [2022-07-12 10:03:27,346 INFO L186 Difference]: Start difference. First operand has 162 places, 144 transitions, 345 flow. Second operand 3 states and 428 transitions. [2022-07-12 10:03:27,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 153 transitions, 440 flow [2022-07-12 10:03:27,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:27,375 INFO L242 Difference]: Finished difference. Result has 161 places, 142 transitions, 341 flow [2022-07-12 10:03:27,375 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} [2022-07-12 10:03:27,376 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 3 predicate places. [2022-07-12 10:03:27,376 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 341 flow [2022-07-12 10:03:27,376 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) [2022-07-12 10:03:27,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:27,377 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] [2022-07-12 10:03:27,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:03:27,377 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)] === [2022-07-12 10:03:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -351366252, now seen corresponding path program 1 times [2022-07-12 10:03:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447565996] [2022-07-12 10:03:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:27,391 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:27,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:27,404 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:27,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-12 10:03:27,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-12 10:03:27,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-12 10:03:27,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-12 10:03:27,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-12 10:03:27,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-12 10:03:27,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-12 10:03:27,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:03:27,406 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:03:27,406 WARN L231 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:27,406 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-07-12 10:03:27,430 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:27,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 196 transitions, 452 flow [2022-07-12 10:03:27,465 INFO L129 PetriNetUnfolder]: 31/272 cut-off events. [2022-07-12 10:03:27,465 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-07-12 10:03:27,469 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. [2022-07-12 10:03:27,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 196 transitions, 452 flow [2022-07-12 10:03:27,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 196 transitions, 452 flow [2022-07-12 10:03:27,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:27,473 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@535a04e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698d3e32 [2022-07-12 10:03:27,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-12 10:03:27,478 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-12 10:03:27,478 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:03:27,479 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:27,479 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] [2022-07-12 10:03:27,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:03:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash 80089653, now seen corresponding path program 1 times [2022-07-12 10:03:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:27,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631807684] [2022-07-12 10:03:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:27,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631807684] [2022-07-12 10:03:27,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631807684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:27,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:27,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076550331] [2022-07-12 10:03:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:27,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:27,502 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 196 [2022-07-12 10:03:27,503 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) [2022-07-12 10:03:27,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:27,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 196 [2022-07-12 10:03:27,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:35,185 INFO L129 PetriNetUnfolder]: 20846/59256 cut-off events. [2022-07-12 10:03:35,186 INFO L130 PetriNetUnfolder]: For 43024/43024 co-relation queries the response was YES. [2022-07-12 10:03:35,825 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. [2022-07-12 10:03:36,499 INFO L132 encePairwiseOnDemand]: 183/196 looper letters, 43 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2022-07-12 10:03:36,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 587 flow [2022-07-12 10:03:36,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-07-12 10:03:36,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8945578231292517 [2022-07-12 10:03:36,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-07-12 10:03:36,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-07-12 10:03:36,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:36,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-07-12 10:03:36,503 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) [2022-07-12 10:03:36,504 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) [2022-07-12 10:03:36,504 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) [2022-07-12 10:03:36,504 INFO L186 Difference]: Start difference. First operand has 184 places, 196 transitions, 452 flow. Second operand 3 states and 526 transitions. [2022-07-12 10:03:36,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 587 flow [2022-07-12 10:03:36,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 195 transitions, 537 flow, removed 25 selfloop flow, removed 0 redundant places. [2022-07-12 10:03:36,542 INFO L242 Difference]: Finished difference. Result has 176 places, 179 transitions, 408 flow [2022-07-12 10:03:36,542 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} [2022-07-12 10:03:36,542 INFO L279 CegarLoopForPetriNet]: 184 programPoint places, -8 predicate places. [2022-07-12 10:03:36,542 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 408 flow [2022-07-12 10:03:36,543 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) [2022-07-12 10:03:36,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:36,543 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] [2022-07-12 10:03:36,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:03:36,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-12 10:03:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 80090676, now seen corresponding path program 1 times [2022-07-12 10:03:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:36,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851284946] [2022-07-12 10:03:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851284946] [2022-07-12 10:03:36,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851284946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:36,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:36,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208143417] [2022-07-12 10:03:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:36,560 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 196 [2022-07-12 10:03:36,561 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) [2022-07-12 10:03:36,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:36,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 196 [2022-07-12 10:03:36,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand