./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 eb692b52 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-?-eb692b5 [2022-07-19 21:04:16,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:04:16,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:04:16,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:04:16,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:04:16,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:04:16,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:04:16,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:04:16,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:04:16,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:04:16,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:04:16,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:04:16,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:04:16,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:04:16,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:04:16,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:04:16,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:04:16,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:04:16,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:04:16,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:04:16,399 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:04:16,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:04:16,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:04:16,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:04:16,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:04:16,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:04:16,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:04:16,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:04:16,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:04:16,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:04:16,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:04:16,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:04:16,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:04:16,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:04:16,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:04:16,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:04:16,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:04:16,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:04:16,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:04:16,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:04:16,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:04:16,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:04:16,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:04:16,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:04:16,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:04:16,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:04:16,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:04:16,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:04:16,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:04:16,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:04:16,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:04:16,454 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:04:16,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:04:16,455 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:04:16,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:04:16,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:04:16,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:04:16,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:04:16,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:04:16,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:04:16,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:04:16,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:04:16,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:04:16,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:04:16,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:04:16,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:04:16,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:04:16,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:04:16,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:04:16,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:04:16,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:04:16,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:04:16,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:04:16,458 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:04:16,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:04:16,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:04:16,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-07-19 21:04:16,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:04:16,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:04:16,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:04:16,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:04:16,685 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:04:16,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-19 21:04:16,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6466c8d/3ea7a60ccf2e454490f6a6e10864ac74/FLAG39b320557 [2022-07-19 21:04:17,162 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:04:17,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-19 21:04:17,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6466c8d/3ea7a60ccf2e454490f6a6e10864ac74/FLAG39b320557 [2022-07-19 21:04:17,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6466c8d/3ea7a60ccf2e454490f6a6e10864ac74 [2022-07-19 21:04:17,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:04:17,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:04:17,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:04:17,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:04:17,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:04:17,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12596074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17, skipping insertion in model container [2022-07-19 21:04:17,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:04:17,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:04:17,868 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] [2022-07-19 21:04:17,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:04:17,881 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:04:17,910 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] [2022-07-19 21:04:17,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:04:17,939 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:04:17,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17 WrapperNode [2022-07-19 21:04:17,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:04:17,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:04:17,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:04:17,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:04:17,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,984 INFO L137 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-07-19 21:04:17,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:04:17,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:04:17,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:04:17,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:04:17,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:17,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:18,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:18,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:18,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:18,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:04:18,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:04:18,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:04:18,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:04:18,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (1/1) ... [2022-07-19 21:04:18,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:04:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:04:18,057 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) [2022-07-19 21:04:18,074 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 [2022-07-19 21:04:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-19 21:04:18,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-19 21:04:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:04:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:04:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:04:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:04:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:04:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:04:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:04:18,088 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:04:18,151 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:04:18,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:04:18,290 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:04:18,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:04:18,313 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:04:18,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:04:18 BoogieIcfgContainer [2022-07-19 21:04:18,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:04:18,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:04:18,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:04:18,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:04:18,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:04:17" (1/3) ... [2022-07-19 21:04:18,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adfc7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:04:18, skipping insertion in model container [2022-07-19 21:04:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:17" (2/3) ... [2022-07-19 21:04:18,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adfc7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:04:18, skipping insertion in model container [2022-07-19 21:04:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:04:18" (3/3) ... [2022-07-19 21:04:18,321 INFO L111 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-07-19 21:04:18,326 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:04:18,333 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:04:18,333 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:04:18,333 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:04:18,366 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:04:18,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 117 flow [2022-07-19 21:04:18,418 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2022-07-19 21:04:18,419 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:04:18,421 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. [2022-07-19 21:04:18,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 117 flow [2022-07-19 21:04:18,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 117 flow [2022-07-19 21:04:18,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:04:18,442 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@4d66263a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fe73658 [2022-07-19 21:04:18,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:04:18,451 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2022-07-19 21:04:18,453 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:04:18,454 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:18,454 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] [2022-07-19 21:04:18,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:04:18,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1552839894, now seen corresponding path program 1 times [2022-07-19 21:04:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573312279] [2022-07-19 21:04:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:18,583 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:04:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:18,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:04:18,636 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:04:18,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-19 21:04:18,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-19 21:04:18,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-19 21:04:18,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:04:18,649 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:04:18,657 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:04:18,657 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-19 21:04:18,693 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:04:18,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-07-19 21:04:18,717 INFO L129 PetriNetUnfolder]: 11/108 cut-off events. [2022-07-19 21:04:18,720 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:04:18,722 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. [2022-07-19 21:04:18,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 84 transitions, 180 flow [2022-07-19 21:04:18,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-07-19 21:04:18,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:04:18,730 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@4d66263a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fe73658 [2022-07-19 21:04:18,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:04:18,743 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2022-07-19 21:04:18,746 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:04:18,746 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:18,746 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] [2022-07-19 21:04:18,747 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)] === [2022-07-19 21:04:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1549820851, now seen corresponding path program 1 times [2022-07-19 21:04:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:18,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896460326] [2022-07-19 21:04:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:18,791 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:04:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:18,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:04:18,821 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:04:18,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-19 21:04:18,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 21:04:18,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-19 21:04:18,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 21:04:18,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:04:18,823 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:04:18,825 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:04:18,825 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-19 21:04:18,854 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:04:18,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 245 flow [2022-07-19 21:04:18,888 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2022-07-19 21:04:18,892 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:04:18,895 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. [2022-07-19 21:04:18,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 245 flow [2022-07-19 21:04:18,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 245 flow [2022-07-19 21:04:18,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:04:18,904 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@4d66263a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fe73658 [2022-07-19 21:04:18,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:04:18,927 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-19 21:04:18,927 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:04:18,927 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:18,928 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] [2022-07-19 21:04:18,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:04:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash 289875179, now seen corresponding path program 1 times [2022-07-19 21:04:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:18,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983086030] [2022-07-19 21:04:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:18,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:19,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983086030] [2022-07-19 21:04:19,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983086030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:19,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:19,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386863715] [2022-07-19 21:04:19,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:19,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:19,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:19,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:19,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-19 21:04:19,085 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) [2022-07-19 21:04:19,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:19,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-19 21:04:19,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:19,226 INFO L129 PetriNetUnfolder]: 199/815 cut-off events. [2022-07-19 21:04:19,226 INFO L130 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-07-19 21:04:19,230 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. [2022-07-19 21:04:19,235 INFO L132 encePairwiseOnDemand]: 104/112 looper letters, 20 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2022-07-19 21:04:19,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 291 flow [2022-07-19 21:04:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2022-07-19 21:04:19,245 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-07-19 21:04:19,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2022-07-19 21:04:19,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2022-07-19 21:04:19,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:19,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2022-07-19 21:04:19,253 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) [2022-07-19 21:04:19,256 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) [2022-07-19 21:04:19,257 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) [2022-07-19 21:04:19,258 INFO L186 Difference]: Start difference. First operand has 106 places, 112 transitions, 245 flow. Second operand 3 states and 303 transitions. [2022-07-19 21:04:19,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 291 flow [2022-07-19 21:04:19,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 283 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-19 21:04:19,263 INFO L242 Difference]: Finished difference. Result has 101 places, 100 transitions, 227 flow [2022-07-19 21:04:19,265 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} [2022-07-19 21:04:19,268 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2022-07-19 21:04:19,268 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 227 flow [2022-07-19 21:04:19,268 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) [2022-07-19 21:04:19,268 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:19,269 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] [2022-07-19 21:04:19,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:04:19,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:04:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 290827468, now seen corresponding path program 1 times [2022-07-19 21:04:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:19,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868305554] [2022-07-19 21:04:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:19,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:19,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868305554] [2022-07-19 21:04:19,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868305554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:19,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:19,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:19,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951546283] [2022-07-19 21:04:19,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:19,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:19,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:19,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:19,325 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-19 21:04:19,326 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) [2022-07-19 21:04:19,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:19,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-19 21:04:19,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:19,416 INFO L129 PetriNetUnfolder]: 186/802 cut-off events. [2022-07-19 21:04:19,416 INFO L130 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-07-19 21:04:19,420 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. [2022-07-19 21:04:19,424 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 20 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2022-07-19 21:04:19,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 287 flow [2022-07-19 21:04:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-07-19 21:04:19,427 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2022-07-19 21:04:19,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-07-19 21:04:19,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-07-19 21:04:19,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:19,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-07-19 21:04:19,444 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) [2022-07-19 21:04:19,445 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) [2022-07-19 21:04:19,445 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) [2022-07-19 21:04:19,445 INFO L186 Difference]: Start difference. First operand has 101 places, 100 transitions, 227 flow. Second operand 3 states and 292 transitions. [2022-07-19 21:04:19,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 287 flow [2022-07-19 21:04:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:19,448 INFO L242 Difference]: Finished difference. Result has 102 places, 99 transitions, 222 flow [2022-07-19 21:04:19,449 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} [2022-07-19 21:04:19,449 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-19 21:04:19,450 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 222 flow [2022-07-19 21:04:19,450 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) [2022-07-19 21:04:19,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:19,450 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] [2022-07-19 21:04:19,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:04:19,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:04:19,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash 290828491, now seen corresponding path program 1 times [2022-07-19 21:04:19,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:19,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587617629] [2022-07-19 21:04:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:19,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:19,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587617629] [2022-07-19 21:04:19,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587617629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:19,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:19,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574703124] [2022-07-19 21:04:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:19,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:19,480 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-19 21:04:19,480 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) [2022-07-19 21:04:19,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:19,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-19 21:04:19,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:19,616 INFO L129 PetriNetUnfolder]: 276/1095 cut-off events. [2022-07-19 21:04:19,616 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-07-19 21:04:19,621 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. [2022-07-19 21:04:19,627 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 23 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-07-19 21:04:19,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 294 flow [2022-07-19 21:04:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-07-19 21:04:19,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8363095238095238 [2022-07-19 21:04:19,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-07-19 21:04:19,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-07-19 21:04:19,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:19,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-07-19 21:04:19,630 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) [2022-07-19 21:04:19,631 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) [2022-07-19 21:04:19,632 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) [2022-07-19 21:04:19,632 INFO L186 Difference]: Start difference. First operand has 102 places, 99 transitions, 222 flow. Second operand 3 states and 281 transitions. [2022-07-19 21:04:19,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 294 flow [2022-07-19 21:04:19,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:19,635 INFO L242 Difference]: Finished difference. Result has 103 places, 98 transitions, 223 flow [2022-07-19 21:04:19,635 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} [2022-07-19 21:04:19,636 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2022-07-19 21:04:19,636 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 223 flow [2022-07-19 21:04:19,636 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) [2022-07-19 21:04:19,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:19,636 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] [2022-07-19 21:04:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:04:19,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:04:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 289874156, now seen corresponding path program 1 times [2022-07-19 21:04:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:19,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452606207] [2022-07-19 21:04:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:19,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:19,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452606207] [2022-07-19 21:04:19,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452606207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:19,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:19,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391552862] [2022-07-19 21:04:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:19,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:19,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:19,663 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-19 21:04:19,663 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) [2022-07-19 21:04:19,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:19,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-19 21:04:19,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:19,781 INFO L129 PetriNetUnfolder]: 258/1051 cut-off events. [2022-07-19 21:04:19,782 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-07-19 21:04:19,786 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. [2022-07-19 21:04:19,791 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 23 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2022-07-19 21:04:19,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 289 flow [2022-07-19 21:04:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-07-19 21:04:19,793 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-19 21:04:19,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-07-19 21:04:19,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-07-19 21:04:19,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:19,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-07-19 21:04:19,794 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) [2022-07-19 21:04:19,795 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) [2022-07-19 21:04:19,796 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) [2022-07-19 21:04:19,796 INFO L186 Difference]: Start difference. First operand has 103 places, 98 transitions, 223 flow. Second operand 3 states and 280 transitions. [2022-07-19 21:04:19,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 289 flow [2022-07-19 21:04:19,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:19,799 INFO L242 Difference]: Finished difference. Result has 102 places, 96 transitions, 218 flow [2022-07-19 21:04:19,799 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} [2022-07-19 21:04:19,800 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-19 21:04:19,800 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 218 flow [2022-07-19 21:04:19,800 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) [2022-07-19 21:04:19,800 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:19,800 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] [2022-07-19 21:04:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:04:19,801 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)] === [2022-07-19 21:04:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash -337068427, now seen corresponding path program 1 times [2022-07-19 21:04:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:19,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769954722] [2022-07-19 21:04:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:19,812 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:04:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:19,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:04:19,831 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:04:19,832 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-19 21:04:19,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:04:19,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-19 21:04:19,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-19 21:04:19,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-19 21:04:19,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:04:19,833 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 21:04:19,833 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:04:19,833 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-19 21:04:19,850 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:04:19,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 140 transitions, 312 flow [2022-07-19 21:04:19,867 INFO L129 PetriNetUnfolder]: 21/190 cut-off events. [2022-07-19 21:04:19,867 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-19 21:04:19,869 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. [2022-07-19 21:04:19,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 140 transitions, 312 flow [2022-07-19 21:04:19,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 312 flow [2022-07-19 21:04:19,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:04:19,872 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@4d66263a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fe73658 [2022-07-19 21:04:19,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:04:19,878 INFO L129 PetriNetUnfolder]: 8/90 cut-off events. [2022-07-19 21:04:19,879 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:04:19,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:19,879 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] [2022-07-19 21:04:19,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1049301266, now seen corresponding path program 1 times [2022-07-19 21:04:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:19,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521958330] [2022-07-19 21:04:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:19,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521958330] [2022-07-19 21:04:19,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521958330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:19,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:19,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289438576] [2022-07-19 21:04:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:19,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:19,902 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:04:19,902 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) [2022-07-19 21:04:19,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:19,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:04:19,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:20,255 INFO L129 PetriNetUnfolder]: 904/3181 cut-off events. [2022-07-19 21:04:20,255 INFO L130 PetriNetUnfolder]: For 1276/1276 co-relation queries the response was YES. [2022-07-19 21:04:20,270 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. [2022-07-19 21:04:20,288 INFO L132 encePairwiseOnDemand]: 131/140 looper letters, 26 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-19 21:04:20,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 136 transitions, 381 flow [2022-07-19 21:04:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-07-19 21:04:20,290 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-07-19 21:04:20,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-07-19 21:04:20,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-07-19 21:04:20,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:20,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-07-19 21:04:20,292 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) [2022-07-19 21:04:20,293 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) [2022-07-19 21:04:20,293 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) [2022-07-19 21:04:20,293 INFO L186 Difference]: Start difference. First operand has 132 places, 140 transitions, 312 flow. Second operand 3 states and 380 transitions. [2022-07-19 21:04:20,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 136 transitions, 381 flow [2022-07-19 21:04:20,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 136 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-19 21:04:20,297 INFO L242 Difference]: Finished difference. Result has 126 places, 126 transitions, 284 flow [2022-07-19 21:04:20,297 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} [2022-07-19 21:04:20,298 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2022-07-19 21:04:20,298 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 284 flow [2022-07-19 21:04:20,298 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) [2022-07-19 21:04:20,298 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:20,299 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] [2022-07-19 21:04:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:04:20,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1050253555, now seen corresponding path program 1 times [2022-07-19 21:04:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:20,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933586370] [2022-07-19 21:04:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933586370] [2022-07-19 21:04:20,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933586370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:20,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:20,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27554650] [2022-07-19 21:04:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:20,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:20,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:04:20,319 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) [2022-07-19 21:04:20,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:20,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:04:20,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:20,636 INFO L129 PetriNetUnfolder]: 864/3141 cut-off events. [2022-07-19 21:04:20,637 INFO L130 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-07-19 21:04:20,649 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. [2022-07-19 21:04:20,661 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 26 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2022-07-19 21:04:20,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 367 flow [2022-07-19 21:04:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-19 21:04:20,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-19 21:04:20,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-19 21:04:20,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-19 21:04:20,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:20,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-19 21:04:20,664 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) [2022-07-19 21:04:20,665 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) [2022-07-19 21:04:20,665 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) [2022-07-19 21:04:20,665 INFO L186 Difference]: Start difference. First operand has 126 places, 126 transitions, 284 flow. Second operand 3 states and 367 transitions. [2022-07-19 21:04:20,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 367 flow [2022-07-19 21:04:20,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 135 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:20,669 INFO L242 Difference]: Finished difference. Result has 127 places, 125 transitions, 279 flow [2022-07-19 21:04:20,669 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} [2022-07-19 21:04:20,671 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-19 21:04:20,671 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 279 flow [2022-07-19 21:04:20,671 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) [2022-07-19 21:04:20,671 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:20,672 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:04:20,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:04:20,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1050254578, now seen corresponding path program 1 times [2022-07-19 21:04:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:20,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799109397] [2022-07-19 21:04:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:20,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:20,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799109397] [2022-07-19 21:04:20,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799109397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:20,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:20,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380886560] [2022-07-19 21:04:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:20,707 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:04:20,708 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) [2022-07-19 21:04:20,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:20,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:04:20,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:21,204 INFO L129 PetriNetUnfolder]: 1281/4525 cut-off events. [2022-07-19 21:04:21,205 INFO L130 PetriNetUnfolder]: For 508/508 co-relation queries the response was YES. [2022-07-19 21:04:21,225 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. [2022-07-19 21:04:21,245 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 29 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-19 21:04:21,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 374 flow [2022-07-19 21:04:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-07-19 21:04:21,247 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8476190476190476 [2022-07-19 21:04:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-07-19 21:04:21,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-07-19 21:04:21,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:21,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-07-19 21:04:21,248 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) [2022-07-19 21:04:21,249 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) [2022-07-19 21:04:21,249 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) [2022-07-19 21:04:21,249 INFO L186 Difference]: Start difference. First operand has 127 places, 125 transitions, 279 flow. Second operand 3 states and 356 transitions. [2022-07-19 21:04:21,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 374 flow [2022-07-19 21:04:21,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:21,252 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 280 flow [2022-07-19 21:04:21,253 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} [2022-07-19 21:04:21,253 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2022-07-19 21:04:21,254 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 280 flow [2022-07-19 21:04:21,254 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) [2022-07-19 21:04:21,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:21,254 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] [2022-07-19 21:04:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:04:21,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1049300243, now seen corresponding path program 1 times [2022-07-19 21:04:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:21,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781729128] [2022-07-19 21:04:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:21,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:21,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781729128] [2022-07-19 21:04:21,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781729128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:21,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:21,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047674409] [2022-07-19 21:04:21,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:21,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:21,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:21,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:21,274 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:04:21,274 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) [2022-07-19 21:04:21,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:21,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:04:21,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:21,677 INFO L129 PetriNetUnfolder]: 1200/4364 cut-off events. [2022-07-19 21:04:21,677 INFO L130 PetriNetUnfolder]: For 539/539 co-relation queries the response was YES. [2022-07-19 21:04:21,696 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. [2022-07-19 21:04:21,712 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 29 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2022-07-19 21:04:21,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 369 flow [2022-07-19 21:04:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-07-19 21:04:21,714 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-19 21:04:21,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-07-19 21:04:21,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-07-19 21:04:21,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:21,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-07-19 21:04:21,715 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) [2022-07-19 21:04:21,716 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) [2022-07-19 21:04:21,716 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) [2022-07-19 21:04:21,716 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 280 flow. Second operand 3 states and 355 transitions. [2022-07-19 21:04:21,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 369 flow [2022-07-19 21:04:21,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:21,719 INFO L242 Difference]: Finished difference. Result has 127 places, 122 transitions, 275 flow [2022-07-19 21:04:21,719 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} [2022-07-19 21:04:21,720 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-19 21:04:21,720 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 275 flow [2022-07-19 21:04:21,720 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) [2022-07-19 21:04:21,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:21,721 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] [2022-07-19 21:04:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:04:21,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash -344456956, now seen corresponding path program 1 times [2022-07-19 21:04:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:21,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126237601] [2022-07-19 21:04:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126237601] [2022-07-19 21:04:21,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126237601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:21,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:21,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633199970] [2022-07-19 21:04:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:21,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:04:21,741 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) [2022-07-19 21:04:21,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:21,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:04:21,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:22,334 INFO L129 PetriNetUnfolder]: 1850/5480 cut-off events. [2022-07-19 21:04:22,335 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-07-19 21:04:22,358 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. [2022-07-19 21:04:22,380 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 30 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2022-07-19 21:04:22,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 373 flow [2022-07-19 21:04:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-07-19 21:04:22,382 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-07-19 21:04:22,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-07-19 21:04:22,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-07-19 21:04:22,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:22,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-07-19 21:04:22,383 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) [2022-07-19 21:04:22,384 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) [2022-07-19 21:04:22,384 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) [2022-07-19 21:04:22,384 INFO L186 Difference]: Start difference. First operand has 127 places, 122 transitions, 275 flow. Second operand 3 states and 359 transitions. [2022-07-19 21:04:22,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 373 flow [2022-07-19 21:04:22,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:22,386 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 298 flow [2022-07-19 21:04:22,387 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} [2022-07-19 21:04:22,387 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2022-07-19 21:04:22,387 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 298 flow [2022-07-19 21:04:22,388 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) [2022-07-19 21:04:22,388 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:22,388 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] [2022-07-19 21:04:22,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:04:22,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -344455933, now seen corresponding path program 1 times [2022-07-19 21:04:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:22,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766195069] [2022-07-19 21:04:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:22,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766195069] [2022-07-19 21:04:22,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766195069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:22,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:22,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:22,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149167525] [2022-07-19 21:04:22,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:22,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:22,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:22,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:22,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:04:22,407 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) [2022-07-19 21:04:22,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:22,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:04:22,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:22,772 INFO L129 PetriNetUnfolder]: 1258/3752 cut-off events. [2022-07-19 21:04:22,772 INFO L130 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-07-19 21:04:22,795 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. [2022-07-19 21:04:22,813 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 25 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-07-19 21:04:22,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 378 flow [2022-07-19 21:04:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-19 21:04:22,815 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-19 21:04:22,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-19 21:04:22,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-19 21:04:22,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:22,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-19 21:04:22,816 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) [2022-07-19 21:04:22,817 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) [2022-07-19 21:04:22,817 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) [2022-07-19 21:04:22,817 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 298 flow. Second operand 3 states and 367 transitions. [2022-07-19 21:04:22,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 378 flow [2022-07-19 21:04:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 373 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:22,831 INFO L242 Difference]: Finished difference. Result has 133 places, 124 transitions, 303 flow [2022-07-19 21:04:22,832 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} [2022-07-19 21:04:22,832 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2022-07-19 21:04:22,832 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 124 transitions, 303 flow [2022-07-19 21:04:22,833 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) [2022-07-19 21:04:22,833 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:22,833 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] [2022-07-19 21:04:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:04:22,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -343503644, now seen corresponding path program 1 times [2022-07-19 21:04:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:22,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510935472] [2022-07-19 21:04:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:22,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:22,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510935472] [2022-07-19 21:04:22,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510935472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:22,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:22,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374641137] [2022-07-19 21:04:22,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:22,868 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:04:22,868 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) [2022-07-19 21:04:22,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:22,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:04:22,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:23,162 INFO L129 PetriNetUnfolder]: 1095/3433 cut-off events. [2022-07-19 21:04:23,163 INFO L130 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2022-07-19 21:04:23,185 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. [2022-07-19 21:04:23,201 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 25 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2022-07-19 21:04:23,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 368 flow [2022-07-19 21:04:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-07-19 21:04:23,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-07-19 21:04:23,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-07-19 21:04:23,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-07-19 21:04:23,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:23,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-07-19 21:04:23,205 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) [2022-07-19 21:04:23,206 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) [2022-07-19 21:04:23,206 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) [2022-07-19 21:04:23,206 INFO L186 Difference]: Start difference. First operand has 133 places, 124 transitions, 303 flow. Second operand 3 states and 366 transitions. [2022-07-19 21:04:23,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 368 flow [2022-07-19 21:04:23,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 361 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-19 21:04:23,212 INFO L242 Difference]: Finished difference. Result has 132 places, 121 transitions, 283 flow [2022-07-19 21:04:23,212 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} [2022-07-19 21:04:23,213 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2022-07-19 21:04:23,213 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 283 flow [2022-07-19 21:04:23,213 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) [2022-07-19 21:04:23,213 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:23,213 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] [2022-07-19 21:04:23,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:04:23,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:04:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash -343502621, now seen corresponding path program 1 times [2022-07-19 21:04:23,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860477203] [2022-07-19 21:04:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:23,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860477203] [2022-07-19 21:04:23,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860477203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:23,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:23,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:23,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100973780] [2022-07-19 21:04:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:23,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:23,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:23,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:04:23,243 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) [2022-07-19 21:04:23,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:23,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:04:23,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:23,728 INFO L129 PetriNetUnfolder]: 1500/4650 cut-off events. [2022-07-19 21:04:23,728 INFO L130 PetriNetUnfolder]: For 589/589 co-relation queries the response was YES. [2022-07-19 21:04:23,764 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. [2022-07-19 21:04:23,790 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 28 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2022-07-19 21:04:23,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 364 flow [2022-07-19 21:04:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-07-19 21:04:23,792 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-07-19 21:04:23,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-07-19 21:04:23,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-07-19 21:04:23,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:23,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-07-19 21:04:23,793 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) [2022-07-19 21:04:23,794 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) [2022-07-19 21:04:23,794 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) [2022-07-19 21:04:23,795 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 283 flow. Second operand 3 states and 354 transitions. [2022-07-19 21:04:23,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 364 flow [2022-07-19 21:04:23,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 363 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:23,799 INFO L242 Difference]: Finished difference. Result has 131 places, 119 transitions, 279 flow [2022-07-19 21:04:23,799 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} [2022-07-19 21:04:23,799 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2022-07-19 21:04:23,800 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 279 flow [2022-07-19 21:04:23,800 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) [2022-07-19 21:04:23,800 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:23,800 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] [2022-07-19 21:04:23,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:04:23,801 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)] === [2022-07-19 21:04:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1821018244, now seen corresponding path program 1 times [2022-07-19 21:04:23,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:23,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014929579] [2022-07-19 21:04:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:23,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:23,811 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:04:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:23,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:04:23,834 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:04:23,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-19 21:04:23,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:04:23,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-19 21:04:23,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-19 21:04:23,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-19 21:04:23,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:04:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:04:23,836 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:04:23,837 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:04:23,837 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-19 21:04:23,872 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:04:23,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 168 transitions, 381 flow [2022-07-19 21:04:23,892 INFO L129 PetriNetUnfolder]: 26/231 cut-off events. [2022-07-19 21:04:23,892 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-19 21:04:23,894 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. [2022-07-19 21:04:23,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 168 transitions, 381 flow [2022-07-19 21:04:23,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 168 transitions, 381 flow [2022-07-19 21:04:23,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:04:23,904 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@4d66263a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fe73658 [2022-07-19 21:04:23,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:04:23,908 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2022-07-19 21:04:23,909 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:04:23,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:23,909 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] [2022-07-19 21:04:23,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 47724502, now seen corresponding path program 1 times [2022-07-19 21:04:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576011188] [2022-07-19 21:04:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:23,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576011188] [2022-07-19 21:04:23,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576011188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:23,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:23,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58728974] [2022-07-19 21:04:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:23,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:23,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-19 21:04:23,934 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) [2022-07-19 21:04:23,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:23,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-19 21:04:23,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:25,816 INFO L129 PetriNetUnfolder]: 5732/17923 cut-off events. [2022-07-19 21:04:25,817 INFO L130 PetriNetUnfolder]: For 9815/9815 co-relation queries the response was YES. [2022-07-19 21:04:25,995 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. [2022-07-19 21:04:26,116 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 37 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2022-07-19 21:04:26,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 166 transitions, 489 flow [2022-07-19 21:04:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-07-19 21:04:26,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8908730158730159 [2022-07-19 21:04:26,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-07-19 21:04:26,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-07-19 21:04:26,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:26,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-07-19 21:04:26,120 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) [2022-07-19 21:04:26,120 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) [2022-07-19 21:04:26,121 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) [2022-07-19 21:04:26,121 INFO L186 Difference]: Start difference. First operand has 158 places, 168 transitions, 381 flow. Second operand 3 states and 449 transitions. [2022-07-19 21:04:26,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 166 transitions, 489 flow [2022-07-19 21:04:26,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 166 transitions, 457 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-07-19 21:04:26,128 INFO L242 Difference]: Finished difference. Result has 151 places, 153 transitions, 351 flow [2022-07-19 21:04:26,128 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} [2022-07-19 21:04:26,128 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -7 predicate places. [2022-07-19 21:04:26,129 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 351 flow [2022-07-19 21:04:26,129 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) [2022-07-19 21:04:26,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:26,129 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] [2022-07-19 21:04:26,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:04:26,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 48677814, now seen corresponding path program 1 times [2022-07-19 21:04:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:26,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910107666] [2022-07-19 21:04:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:26,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910107666] [2022-07-19 21:04:26,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910107666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:26,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:26,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459900478] [2022-07-19 21:04:26,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:26,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:26,147 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-19 21:04:26,147 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) [2022-07-19 21:04:26,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:26,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-19 21:04:26,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:27,285 INFO L129 PetriNetUnfolder]: 3846/12345 cut-off events. [2022-07-19 21:04:27,285 INFO L130 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2022-07-19 21:04:27,395 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. [2022-07-19 21:04:27,480 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/165 dead transitions. [2022-07-19 21:04:27,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 165 transitions, 457 flow [2022-07-19 21:04:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-07-19 21:04:27,482 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.878968253968254 [2022-07-19 21:04:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-07-19 21:04:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-07-19 21:04:27,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:27,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-07-19 21:04:27,483 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) [2022-07-19 21:04:27,484 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) [2022-07-19 21:04:27,485 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) [2022-07-19 21:04:27,485 INFO L186 Difference]: Start difference. First operand has 151 places, 153 transitions, 351 flow. Second operand 3 states and 443 transitions. [2022-07-19 21:04:27,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 165 transitions, 457 flow [2022-07-19 21:04:27,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 165 transitions, 453 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:27,492 INFO L242 Difference]: Finished difference. Result has 153 places, 151 transitions, 342 flow [2022-07-19 21:04:27,492 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} [2022-07-19 21:04:27,492 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-19 21:04:27,493 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 342 flow [2022-07-19 21:04:27,493 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) [2022-07-19 21:04:27,493 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:27,493 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] [2022-07-19 21:04:27,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:04:27,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash 48678837, now seen corresponding path program 1 times [2022-07-19 21:04:27,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:27,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276488204] [2022-07-19 21:04:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:27,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276488204] [2022-07-19 21:04:27,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276488204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:27,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:27,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850773378] [2022-07-19 21:04:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:27,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-19 21:04:27,512 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) [2022-07-19 21:04:27,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:27,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-19 21:04:27,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:29,338 INFO L129 PetriNetUnfolder]: 5166/16994 cut-off events. [2022-07-19 21:04:29,338 INFO L130 PetriNetUnfolder]: For 2032/2032 co-relation queries the response was YES. [2022-07-19 21:04:29,437 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. [2022-07-19 21:04:29,532 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 36 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-07-19 21:04:29,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 163 transitions, 457 flow [2022-07-19 21:04:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:29,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-19 21:04:29,534 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-19 21:04:29,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-19 21:04:29,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-19 21:04:29,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:29,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-19 21:04:29,536 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) [2022-07-19 21:04:29,537 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) [2022-07-19 21:04:29,537 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) [2022-07-19 21:04:29,537 INFO L186 Difference]: Start difference. First operand has 153 places, 151 transitions, 342 flow. Second operand 3 states and 431 transitions. [2022-07-19 21:04:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 163 transitions, 457 flow [2022-07-19 21:04:29,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:29,546 INFO L242 Difference]: Finished difference. Result has 154 places, 150 transitions, 338 flow [2022-07-19 21:04:29,546 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} [2022-07-19 21:04:29,547 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -4 predicate places. [2022-07-19 21:04:29,547 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 338 flow [2022-07-19 21:04:29,547 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) [2022-07-19 21:04:29,547 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:29,547 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] [2022-07-19 21:04:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:04:29,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 47725525, now seen corresponding path program 1 times [2022-07-19 21:04:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:29,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911548435] [2022-07-19 21:04:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:29,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911548435] [2022-07-19 21:04:29,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911548435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:29,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:29,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451531976] [2022-07-19 21:04:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:29,580 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-19 21:04:29,581 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) [2022-07-19 21:04:29,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:29,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-19 21:04:29,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:30,763 INFO L129 PetriNetUnfolder]: 3432/10702 cut-off events. [2022-07-19 21:04:30,763 INFO L130 PetriNetUnfolder]: For 1202/1202 co-relation queries the response was YES. [2022-07-19 21:04:30,818 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. [2022-07-19 21:04:30,870 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-19 21:04:30,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 161 transitions, 444 flow [2022-07-19 21:04:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-19 21:04:30,872 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-19 21:04:30,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-19 21:04:30,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-19 21:04:30,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:30,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-19 21:04:30,874 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) [2022-07-19 21:04:30,875 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) [2022-07-19 21:04:30,875 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) [2022-07-19 21:04:30,875 INFO L186 Difference]: Start difference. First operand has 154 places, 150 transitions, 338 flow. Second operand 3 states and 442 transitions. [2022-07-19 21:04:30,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 161 transitions, 444 flow [2022-07-19 21:04:30,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 440 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-19 21:04:30,879 INFO L242 Difference]: Finished difference. Result has 153 places, 148 transitions, 333 flow [2022-07-19 21:04:30,879 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} [2022-07-19 21:04:30,880 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-19 21:04:30,880 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 333 flow [2022-07-19 21:04:30,880 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) [2022-07-19 21:04:30,880 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:30,881 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] [2022-07-19 21:04:30,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:04:30,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash -985739132, now seen corresponding path program 1 times [2022-07-19 21:04:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:30,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119063715] [2022-07-19 21:04:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:30,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:30,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:30,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119063715] [2022-07-19 21:04:30,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119063715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:30,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:30,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87105862] [2022-07-19 21:04:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:30,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:30,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-19 21:04:30,900 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) [2022-07-19 21:04:30,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:30,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-19 21:04:30,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:32,356 INFO L129 PetriNetUnfolder]: 5228/15122 cut-off events. [2022-07-19 21:04:32,356 INFO L130 PetriNetUnfolder]: For 1574/1574 co-relation queries the response was YES. [2022-07-19 21:04:32,456 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. [2022-07-19 21:04:32,615 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-19 21:04:32,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 161 transitions, 440 flow [2022-07-19 21:04:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-19 21:04:32,618 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-19 21:04:32,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-19 21:04:32,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-19 21:04:32,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:32,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-19 21:04:32,619 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) [2022-07-19 21:04:32,620 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) [2022-07-19 21:04:32,620 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) [2022-07-19 21:04:32,620 INFO L186 Difference]: Start difference. First operand has 153 places, 148 transitions, 333 flow. Second operand 3 states and 442 transitions. [2022-07-19 21:04:32,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 161 transitions, 440 flow [2022-07-19 21:04:32,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:32,623 INFO L242 Difference]: Finished difference. Result has 155 places, 148 transitions, 337 flow [2022-07-19 21:04:32,623 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} [2022-07-19 21:04:32,623 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -3 predicate places. [2022-07-19 21:04:32,624 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 337 flow [2022-07-19 21:04:32,624 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) [2022-07-19 21:04:32,624 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:32,624 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] [2022-07-19 21:04:32,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:04:32,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash -985738109, now seen corresponding path program 1 times [2022-07-19 21:04:32,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:32,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328606137] [2022-07-19 21:04:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:32,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:32,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:32,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328606137] [2022-07-19 21:04:32,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328606137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:32,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:32,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554547319] [2022-07-19 21:04:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:32,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:32,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:32,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:32,641 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-19 21:04:32,641 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) [2022-07-19 21:04:32,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:32,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-19 21:04:32,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:34,977 INFO L129 PetriNetUnfolder]: 8136/23042 cut-off events. [2022-07-19 21:04:34,978 INFO L130 PetriNetUnfolder]: For 2669/2669 co-relation queries the response was YES. [2022-07-19 21:04:35,115 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. [2022-07-19 21:04:35,224 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 35 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2022-07-19 21:04:35,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 161 transitions, 454 flow [2022-07-19 21:04:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-07-19 21:04:35,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-07-19 21:04:35,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-07-19 21:04:35,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-07-19 21:04:35,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:35,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-07-19 21:04:35,227 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) [2022-07-19 21:04:35,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:04:35,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:04:35,228 INFO L186 Difference]: Start difference. First operand has 155 places, 148 transitions, 337 flow. Second operand 3 states and 432 transitions. [2022-07-19 21:04:35,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 161 transitions, 454 flow [2022-07-19 21:04:35,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 161 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:35,238 INFO L242 Difference]: Finished difference. Result has 158 places, 149 transitions, 354 flow [2022-07-19 21:04:35,238 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} [2022-07-19 21:04:35,238 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-19 21:04:35,238 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 149 transitions, 354 flow [2022-07-19 21:04:35,239 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) [2022-07-19 21:04:35,239 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:35,239 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] [2022-07-19 21:04:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:04:35,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash -986691421, now seen corresponding path program 1 times [2022-07-19 21:04:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593522801] [2022-07-19 21:04:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:35,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593522801] [2022-07-19 21:04:35,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593522801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:35,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:35,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173611349] [2022-07-19 21:04:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:35,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:35,264 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-19 21:04:35,264 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) [2022-07-19 21:04:35,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:35,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-19 21:04:35,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:36,861 INFO L129 PetriNetUnfolder]: 4536/13446 cut-off events. [2022-07-19 21:04:36,862 INFO L130 PetriNetUnfolder]: For 1777/1777 co-relation queries the response was YES. [2022-07-19 21:04:36,956 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. [2022-07-19 21:04:37,034 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 31 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2022-07-19 21:04:37,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 447 flow [2022-07-19 21:04:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-19 21:04:37,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-19 21:04:37,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-19 21:04:37,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-19 21:04:37,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:37,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-19 21:04:37,048 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) [2022-07-19 21:04:37,052 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) [2022-07-19 21:04:37,053 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) [2022-07-19 21:04:37,053 INFO L186 Difference]: Start difference. First operand has 158 places, 149 transitions, 354 flow. Second operand 3 states and 441 transitions. [2022-07-19 21:04:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 447 flow [2022-07-19 21:04:37,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 159 transitions, 439 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-19 21:04:37,083 INFO L242 Difference]: Finished difference. Result has 158 places, 147 transitions, 341 flow [2022-07-19 21:04:37,083 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} [2022-07-19 21:04:37,084 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-19 21:04:37,084 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 341 flow [2022-07-19 21:04:37,084 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) [2022-07-19 21:04:37,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:37,084 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] [2022-07-19 21:04:37,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:04:37,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash -986692444, now seen corresponding path program 1 times [2022-07-19 21:04:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630513510] [2022-07-19 21:04:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:37,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:04:37,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:37,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630513510] [2022-07-19 21:04:37,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630513510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:37,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:37,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796412960] [2022-07-19 21:04:37,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:37,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:37,140 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-19 21:04:37,140 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) [2022-07-19 21:04:37,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:37,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-19 21:04:37,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:39,247 INFO L129 PetriNetUnfolder]: 6240/18874 cut-off events. [2022-07-19 21:04:39,248 INFO L130 PetriNetUnfolder]: For 2045/2045 co-relation queries the response was YES. [2022-07-19 21:04:39,400 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. [2022-07-19 21:04:39,495 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 34 selfloop transitions, 1 changer transitions 0/157 dead transitions. [2022-07-19 21:04:39,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 445 flow [2022-07-19 21:04:39,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-07-19 21:04:39,497 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-07-19 21:04:39,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-07-19 21:04:39,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-07-19 21:04:39,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:39,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-07-19 21:04:39,498 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) [2022-07-19 21:04:39,499 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) [2022-07-19 21:04:39,499 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) [2022-07-19 21:04:39,499 INFO L186 Difference]: Start difference. First operand has 158 places, 147 transitions, 341 flow. Second operand 3 states and 429 transitions. [2022-07-19 21:04:39,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 445 flow [2022-07-19 21:04:39,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:39,516 INFO L242 Difference]: Finished difference. Result has 157 places, 145 transitions, 337 flow [2022-07-19 21:04:39,516 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} [2022-07-19 21:04:39,517 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -1 predicate places. [2022-07-19 21:04:39,517 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 337 flow [2022-07-19 21:04:39,517 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) [2022-07-19 21:04:39,517 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:39,517 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] [2022-07-19 21:04:39,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:04:39,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1011929366, now seen corresponding path program 1 times [2022-07-19 21:04:39,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:39,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499902144] [2022-07-19 21:04:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 21:04:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:39,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499902144] [2022-07-19 21:04:39,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499902144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:39,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:39,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567848182] [2022-07-19 21:04:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:39,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-19 21:04:39,536 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) [2022-07-19 21:04:39,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:39,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-19 21:04:39,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:41,359 INFO L129 PetriNetUnfolder]: 6004/15750 cut-off events. [2022-07-19 21:04:41,360 INFO L130 PetriNetUnfolder]: For 1789/1789 co-relation queries the response was YES. [2022-07-19 21:04:41,443 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. [2022-07-19 21:04:41,520 INFO L132 encePairwiseOnDemand]: 165/168 looper letters, 30 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-07-19 21:04:41,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 435 flow [2022-07-19 21:04:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-19 21:04:41,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-19 21:04:41,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-19 21:04:41,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-19 21:04:41,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:41,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-19 21:04:41,524 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) [2022-07-19 21:04:41,525 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) [2022-07-19 21:04:41,525 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) [2022-07-19 21:04:41,525 INFO L186 Difference]: Start difference. First operand has 157 places, 145 transitions, 337 flow. Second operand 3 states and 441 transitions. [2022-07-19 21:04:41,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 435 flow [2022-07-19 21:04:41,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:41,528 INFO L242 Difference]: Finished difference. Result has 160 places, 146 transitions, 350 flow [2022-07-19 21:04:41,528 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} [2022-07-19 21:04:41,529 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 2 predicate places. [2022-07-19 21:04:41,529 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 350 flow [2022-07-19 21:04:41,529 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) [2022-07-19 21:04:41,529 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:41,529 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] [2022-07-19 21:04:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:04:41,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1011928343, now seen corresponding path program 1 times [2022-07-19 21:04:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:41,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464642210] [2022-07-19 21:04:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:41,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 21:04:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:41,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464642210] [2022-07-19 21:04:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464642210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:41,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:41,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084216018] [2022-07-19 21:04:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:41,548 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-19 21:04:41,549 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) [2022-07-19 21:04:41,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:41,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-19 21:04:41,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:44,163 INFO L129 PetriNetUnfolder]: 9388/23678 cut-off events. [2022-07-19 21:04:44,163 INFO L130 PetriNetUnfolder]: For 3069/3069 co-relation queries the response was YES. [2022-07-19 21:04:44,382 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. [2022-07-19 21:04:44,523 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 34 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2022-07-19 21:04:44,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 158 transitions, 458 flow [2022-07-19 21:04:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-19 21:04:44,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-19 21:04:44,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-19 21:04:44,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-19 21:04:44,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:44,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-19 21:04:44,526 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) [2022-07-19 21:04:44,527 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) [2022-07-19 21:04:44,527 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) [2022-07-19 21:04:44,527 INFO L186 Difference]: Start difference. First operand has 160 places, 146 transitions, 350 flow. Second operand 3 states and 431 transitions. [2022-07-19 21:04:44,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 158 transitions, 458 flow [2022-07-19 21:04:44,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:44,550 INFO L242 Difference]: Finished difference. Result has 163 places, 147 transitions, 366 flow [2022-07-19 21:04:44,550 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} [2022-07-19 21:04:44,550 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 5 predicate places. [2022-07-19 21:04:44,551 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 366 flow [2022-07-19 21:04:44,551 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) [2022-07-19 21:04:44,551 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:44,551 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] [2022-07-19 21:04:44,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:04:44,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1012881655, now seen corresponding path program 1 times [2022-07-19 21:04:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:44,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396168116] [2022-07-19 21:04:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 21:04:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396168116] [2022-07-19 21:04:44,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396168116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:44,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:44,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:44,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9575555] [2022-07-19 21:04:44,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:44,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:44,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:44,576 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-19 21:04:44,576 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) [2022-07-19 21:04:44,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:44,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-19 21:04:44,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:46,378 INFO L129 PetriNetUnfolder]: 5796/15126 cut-off events. [2022-07-19 21:04:46,378 INFO L130 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2022-07-19 21:04:46,470 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. [2022-07-19 21:04:46,543 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 30 selfloop transitions, 1 changer transitions 0/155 dead transitions. [2022-07-19 21:04:46,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 155 transitions, 445 flow [2022-07-19 21:04:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-07-19 21:04:46,546 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-07-19 21:04:46,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-07-19 21:04:46,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-07-19 21:04:46,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:46,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-07-19 21:04:46,547 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) [2022-07-19 21:04:46,548 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) [2022-07-19 21:04:46,548 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) [2022-07-19 21:04:46,548 INFO L186 Difference]: Start difference. First operand has 163 places, 147 transitions, 366 flow. Second operand 3 states and 440 transitions. [2022-07-19 21:04:46,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 155 transitions, 445 flow [2022-07-19 21:04:46,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 437 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-19 21:04:46,578 INFO L242 Difference]: Finished difference. Result has 162 places, 144 transitions, 345 flow [2022-07-19 21:04:46,578 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} [2022-07-19 21:04:46,579 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 4 predicate places. [2022-07-19 21:04:46,579 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 345 flow [2022-07-19 21:04:46,579 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) [2022-07-19 21:04:46,579 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:46,579 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] [2022-07-19 21:04:46,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:04:46,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:04:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1012882678, now seen corresponding path program 1 times [2022-07-19 21:04:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:46,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134985882] [2022-07-19 21:04:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:46,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 21:04:46,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:46,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134985882] [2022-07-19 21:04:46,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134985882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:46,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:46,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:46,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989325477] [2022-07-19 21:04:46,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:46,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:46,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-19 21:04:46,598 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) [2022-07-19 21:04:46,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:46,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-19 21:04:46,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:48,839 INFO L129 PetriNetUnfolder]: 7884/20462 cut-off events. [2022-07-19 21:04:48,839 INFO L130 PetriNetUnfolder]: For 2365/2365 co-relation queries the response was YES. [2022-07-19 21:04:49,042 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. [2022-07-19 21:04:49,167 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2022-07-19 21:04:49,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 153 transitions, 440 flow [2022-07-19 21:04:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-07-19 21:04:49,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2022-07-19 21:04:49,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-07-19 21:04:49,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-07-19 21:04:49,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:49,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-07-19 21:04:49,170 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) [2022-07-19 21:04:49,171 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) [2022-07-19 21:04:49,171 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) [2022-07-19 21:04:49,171 INFO L186 Difference]: Start difference. First operand has 162 places, 144 transitions, 345 flow. Second operand 3 states and 428 transitions. [2022-07-19 21:04:49,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 153 transitions, 440 flow [2022-07-19 21:04:49,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:04:49,188 INFO L242 Difference]: Finished difference. Result has 161 places, 142 transitions, 341 flow [2022-07-19 21:04:49,189 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} [2022-07-19 21:04:49,189 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 3 predicate places. [2022-07-19 21:04:49,189 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 341 flow [2022-07-19 21:04:49,189 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) [2022-07-19 21:04:49,189 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:49,190 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] [2022-07-19 21:04:49,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:04:49,190 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)] === [2022-07-19 21:04:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash -351366252, now seen corresponding path program 1 times [2022-07-19 21:04:49,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:49,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354886960] [2022-07-19 21:04:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:49,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:49,203 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:04:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:04:49,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:04:49,215 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:04:49,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-19 21:04:49,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-19 21:04:49,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-19 21:04:49,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-19 21:04:49,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-19 21:04:49,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-19 21:04:49,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-19 21:04:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:04:49,217 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:04:49,217 WARN L231 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:04:49,217 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-07-19 21:04:49,235 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:04:49,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 196 transitions, 452 flow [2022-07-19 21:04:49,259 INFO L129 PetriNetUnfolder]: 31/272 cut-off events. [2022-07-19 21:04:49,259 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-07-19 21:04:49,262 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. [2022-07-19 21:04:49,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 196 transitions, 452 flow [2022-07-19 21:04:49,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 196 transitions, 452 flow [2022-07-19 21:04:49,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:04:49,265 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@4d66263a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fe73658 [2022-07-19 21:04:49,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-19 21:04:49,269 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-19 21:04:49,270 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:04:49,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:49,270 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] [2022-07-19 21:04:49,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-19 21:04:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash 80089653, now seen corresponding path program 1 times [2022-07-19 21:04:49,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:49,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009133019] [2022-07-19 21:04:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:49,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009133019] [2022-07-19 21:04:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009133019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:49,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:49,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:49,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706151247] [2022-07-19 21:04:49,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:49,288 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 196 [2022-07-19 21:04:49,289 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) [2022-07-19 21:04:49,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:49,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 196 [2022-07-19 21:04:49,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:04:56,764 INFO L129 PetriNetUnfolder]: 20846/59256 cut-off events. [2022-07-19 21:04:56,764 INFO L130 PetriNetUnfolder]: For 43024/43024 co-relation queries the response was YES. [2022-07-19 21:04:57,450 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. [2022-07-19 21:04:58,125 INFO L132 encePairwiseOnDemand]: 183/196 looper letters, 43 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2022-07-19 21:04:58,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 587 flow [2022-07-19 21:04:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:04:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:04:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-07-19 21:04:58,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8945578231292517 [2022-07-19 21:04:58,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-07-19 21:04:58,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-07-19 21:04:58,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:04:58,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-07-19 21:04:58,144 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) [2022-07-19 21:04:58,145 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) [2022-07-19 21:04:58,145 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) [2022-07-19 21:04:58,154 INFO L186 Difference]: Start difference. First operand has 184 places, 196 transitions, 452 flow. Second operand 3 states and 526 transitions. [2022-07-19 21:04:58,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 587 flow [2022-07-19 21:04:58,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 195 transitions, 537 flow, removed 25 selfloop flow, removed 0 redundant places. [2022-07-19 21:04:58,220 INFO L242 Difference]: Finished difference. Result has 176 places, 179 transitions, 408 flow [2022-07-19 21:04:58,220 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} [2022-07-19 21:04:58,221 INFO L279 CegarLoopForPetriNet]: 184 programPoint places, -8 predicate places. [2022-07-19 21:04:58,221 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 408 flow [2022-07-19 21:04:58,221 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) [2022-07-19 21:04:58,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:04:58,221 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] [2022-07-19 21:04:58,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:04:58,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-19 21:04:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:04:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash 80090676, now seen corresponding path program 1 times [2022-07-19 21:04:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:04:58,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777026638] [2022-07-19 21:04:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:04:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:04:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:04:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:04:58,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:04:58,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777026638] [2022-07-19 21:04:58,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777026638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:04:58,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:04:58,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:04:58,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392706121] [2022-07-19 21:04:58,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:04:58,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:04:58,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:04:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:04:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:04:58,239 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 196 [2022-07-19 21:04:58,239 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) [2022-07-19 21:04:58,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:04:58,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 196 [2022-07-19 21:04:58,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:05:03,081 INFO L129 PetriNetUnfolder]: 14221/38364 cut-off events. [2022-07-19 21:05:03,081 INFO L130 PetriNetUnfolder]: For 4051/4051 co-relation queries the response was YES. [2022-07-19 21:05:03,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59519 conditions, 38364 events. 14221/38364 cut-off events. For 4051/4051 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 465214 event pairs, 6927 based on Foata normal form. 0/34351 useless extension candidates. Maximal degree in co-relation 52197. Up to 9112 conditions per place. [2022-07-19 21:05:03,806 INFO L132 encePairwiseOnDemand]: 193/196 looper letters, 38 selfloop transitions, 2 changer transitions 0/195 dead transitions. [2022-07-19 21:05:03,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 195 transitions, 543 flow [2022-07-19 21:05:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:05:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:05:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2022-07-19 21:05:03,808 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-07-19 21:05:03,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2022-07-19 21:05:03,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2022-07-19 21:05:03,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:05:03,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2022-07-19 21:05:03,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:05:03,810 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) [2022-07-19 21:05:03,811 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) [2022-07-19 21:05:03,811 INFO L186 Difference]: Start difference. First operand has 176 places, 179 transitions, 408 flow. Second operand 3 states and 518 transitions. [2022-07-19 21:05:03,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 195 transitions, 543 flow [2022-07-19 21:05:03,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 195 transitions, 538 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:05:03,850 INFO L242 Difference]: Finished difference. Result has 179 places, 179 transitions, 413 flow [2022-07-19 21:05:03,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2022-07-19 21:05:03,851 INFO L279 CegarLoopForPetriNet]: 184 programPoint places, -5 predicate places. [2022-07-19 21:05:03,851 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 413 flow [2022-07-19 21:05:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:05:03,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:05:03,852 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] [2022-07-19 21:05:03,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:05:03,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-19 21:05:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:05:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash 81042965, now seen corresponding path program 1 times [2022-07-19 21:05:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:05:03,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163126310] [2022-07-19 21:05:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:05:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:05:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:05:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:05:03,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:05:03,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163126310] [2022-07-19 21:05:03,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163126310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:05:03,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:05:03,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:05:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405702688] [2022-07-19 21:05:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:05:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:05:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:05:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:05:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:05:03,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 196 [2022-07-19 21:05:03,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:05:03,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:05:03,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 196 [2022-07-19 21:05:03,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand