./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.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 b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:45:35,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:45:35,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:45:35,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:45:35,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:45:35,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:45:35,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:45:35,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:45:35,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:45:35,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:45:35,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:45:35,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:45:35,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:45:35,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:45:35,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:45:35,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:45:35,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:45:35,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:45:35,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:45:35,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:45:35,425 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:45:35,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:45:35,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:45:35,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:45:35,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:45:35,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:45:35,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:45:35,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:45:35,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:45:35,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:45:35,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:45:35,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:45:35,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:45:35,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:45:35,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:45:35,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:45:35,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:45:35,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:45:35,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:45:35,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:45:35,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:45:35,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:45:35,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:45:35,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:45:35,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:45:35,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:45:35,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:45:35,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:45:35,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:45:35,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:45:35,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:45:35,465 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:45:35,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:45:35,465 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:45:35,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:45:35,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:45:35,466 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:45:35,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:45:35,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:45:35,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:45:35,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:45:35,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:45:35,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:45:35,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:45:35,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:45:35,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:45:35,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:45:35,469 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:45:35,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:45:35,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:45:35,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2022-07-13 21:45:35,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:45:35,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:45:35,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:45:35,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:45:35,698 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:45:35,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2022-07-13 21:45:35,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36368f9b7/fd1f037a7b8d470db922be992df04899/FLAG241f5eb52 [2022-07-13 21:45:36,142 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:45:36,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2022-07-13 21:45:36,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36368f9b7/fd1f037a7b8d470db922be992df04899/FLAG241f5eb52 [2022-07-13 21:45:36,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36368f9b7/fd1f037a7b8d470db922be992df04899 [2022-07-13 21:45:36,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:45:36,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:45:36,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:45:36,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:45:36,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:45:36,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:36,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6d5dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36, skipping insertion in model container [2022-07-13 21:45:36,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:36,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:45:36,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:45:36,686 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-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-13 21:45:36,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:45:36,876 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:45:36,889 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-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-13 21:45:36,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:45:36,973 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:45:36,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36 WrapperNode [2022-07-13 21:45:36,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:45:36,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:45:36,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:45:36,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:45:36,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,039 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-07-13 21:45:37,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:45:37,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:45:37,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:45:37,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:45:37,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:45:37,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:45:37,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:45:37,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:45:37,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (1/1) ... [2022-07-13 21:45:37,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:45:37,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:45:37,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:45:37,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:45:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:45:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:45:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:45:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:45:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:45:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:45:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:45:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:45:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:45:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-13 21:45:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-13 21:45:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-13 21:45:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-13 21:45:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:45:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:45:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:45:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:45:37,172 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:45:37,299 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:45:37,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:45:37,654 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:45:37,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:45:37,887 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:45:37,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:45:37 BoogieIcfgContainer [2022-07-13 21:45:37,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:45:37,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:45:37,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:45:37,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:45:37,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:45:36" (1/3) ... [2022-07-13 21:45:37,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ad8277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:45:37, skipping insertion in model container [2022-07-13 21:45:37,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:45:36" (2/3) ... [2022-07-13 21:45:37,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ad8277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:45:37, skipping insertion in model container [2022-07-13 21:45:37,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:45:37" (3/3) ... [2022-07-13 21:45:37,895 INFO L111 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2022-07-13 21:45:37,899 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:45:37,905 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:45:37,905 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:45:37,905 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:45:37,970 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:45:37,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-07-13 21:45:38,043 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2022-07-13 21:45:38,044 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:45:38,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-13 21:45:38,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-07-13 21:45:38,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-07-13 21:45:38,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:45:38,070 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@27a93e00, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@46b01e0 [2022-07-13 21:45:38,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 21:45:38,092 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2022-07-13 21:45:38,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:45:38,093 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:45:38,094 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:45:38,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:45:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:45:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1261973162, now seen corresponding path program 1 times [2022-07-13 21:45:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:45:38,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060557146] [2022-07-13 21:45:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:45:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:45:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:45:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:45:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:45:38,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060557146] [2022-07-13 21:45:38,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060557146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:45:38,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:45:38,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:45:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695263477] [2022-07-13 21:45:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:45:38,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:45:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:45:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:45:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:45:38,352 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-07-13 21:45:38,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:38,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:45:38,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-07-13 21:45:38,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:45:38,545 INFO L129 PetriNetUnfolder]: 162/623 cut-off events. [2022-07-13 21:45:38,545 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-13 21:45:38,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3460 event pairs, 132 based on Foata normal form. 46/631 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-13 21:45:38,552 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-07-13 21:45:38,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-07-13 21:45:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:45:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:45:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-07-13 21:45:38,562 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-07-13 21:45:38,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-07-13 21:45:38,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-07-13 21:45:38,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:45:38,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-07-13 21:45:38,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:38,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:38,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:38,576 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-07-13 21:45:38,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-07-13 21:45:38,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 21:45:38,581 INFO L242 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-07-13 21:45:38,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-07-13 21:45:38,586 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-07-13 21:45:38,586 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-07-13 21:45:38,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:38,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:45:38,587 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:45:38,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:45:38,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:45:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:45:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1699652514, now seen corresponding path program 1 times [2022-07-13 21:45:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:45:38,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532115052] [2022-07-13 21:45:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:45:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:45:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:45:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:45:38,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:45:38,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532115052] [2022-07-13 21:45:38,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532115052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:45:38,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:45:38,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:45:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530618593] [2022-07-13 21:45:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:45:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:45:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:45:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:45:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:45:38,806 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-13 21:45:38,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:38,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:45:38,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-13 21:45:38,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:45:43,182 INFO L129 PetriNetUnfolder]: 19707/42016 cut-off events. [2022-07-13 21:45:43,182 INFO L130 PetriNetUnfolder]: For 1610/1610 co-relation queries the response was YES. [2022-07-13 21:45:43,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70690 conditions, 42016 events. 19707/42016 cut-off events. For 1610/1610 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 452738 event pairs, 4318 based on Foata normal form. 0/41093 useless extension candidates. Maximal degree in co-relation 70628. Up to 10076 conditions per place. [2022-07-13 21:45:43,568 INFO L132 encePairwiseOnDemand]: 122/139 looper letters, 37 selfloop transitions, 13 changer transitions 102/239 dead transitions. [2022-07-13 21:45:43,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 239 transitions, 786 flow [2022-07-13 21:45:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:45:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:45:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1077 transitions. [2022-07-13 21:45:43,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8609112709832134 [2022-07-13 21:45:43,572 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1077 transitions. [2022-07-13 21:45:43,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1077 transitions. [2022-07-13 21:45:43,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:45:43,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1077 transitions. [2022-07-13 21:45:43,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:43,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:43,578 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:43,578 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 9 states and 1077 transitions. [2022-07-13 21:45:43,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 239 transitions, 786 flow [2022-07-13 21:45:43,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 239 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:45:43,583 INFO L242 Difference]: Finished difference. Result has 156 places, 125 transitions, 388 flow [2022-07-13 21:45:43,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=156, PETRI_TRANSITIONS=125} [2022-07-13 21:45:43,584 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 10 predicate places. [2022-07-13 21:45:43,584 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 125 transitions, 388 flow [2022-07-13 21:45:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:43,585 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:45:43,585 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:45:43,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:45:43,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:45:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:45:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash -699640547, now seen corresponding path program 1 times [2022-07-13 21:45:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:45:43,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388950754] [2022-07-13 21:45:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:45:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:45:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:45:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:45:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:45:43,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388950754] [2022-07-13 21:45:43,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388950754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:45:43,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:45:43,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:45:43,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713749023] [2022-07-13 21:45:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:45:43,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:45:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:45:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:45:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:45:43,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-13 21:45:43,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 125 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:43,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:45:43,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-13 21:45:43,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:45:46,396 INFO L129 PetriNetUnfolder]: 13238/22639 cut-off events. [2022-07-13 21:45:46,397 INFO L130 PetriNetUnfolder]: For 37987/38059 co-relation queries the response was YES. [2022-07-13 21:45:46,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 22639 events. 13238/22639 cut-off events. For 37987/38059 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 183609 event pairs, 2330 based on Foata normal form. 532/22672 useless extension candidates. Maximal degree in co-relation 68724. Up to 5647 conditions per place. [2022-07-13 21:45:46,577 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 58 selfloop transitions, 9 changer transitions 130/284 dead transitions. [2022-07-13 21:45:46,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 284 transitions, 1674 flow [2022-07-13 21:45:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:45:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:45:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1524 transitions. [2022-07-13 21:45:46,581 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8433868289983398 [2022-07-13 21:45:46,581 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1524 transitions. [2022-07-13 21:45:46,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1524 transitions. [2022-07-13 21:45:46,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:45:46,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1524 transitions. [2022-07-13 21:45:46,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:46,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:46,588 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:46,589 INFO L186 Difference]: Start difference. First operand has 156 places, 125 transitions, 388 flow. Second operand 13 states and 1524 transitions. [2022-07-13 21:45:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 284 transitions, 1674 flow [2022-07-13 21:45:46,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 284 transitions, 1560 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:45:46,649 INFO L242 Difference]: Finished difference. Result has 158 places, 130 transitions, 478 flow [2022-07-13 21:45:46,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=478, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2022-07-13 21:45:46,650 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-07-13 21:45:46,650 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 478 flow [2022-07-13 21:45:46,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:46,650 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:45:46,651 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:45:46,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:45:46,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:45:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:45:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1311624956, now seen corresponding path program 1 times [2022-07-13 21:45:46,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:45:46,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765423759] [2022-07-13 21:45:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:45:46,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:45:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:45:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:45:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:45:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765423759] [2022-07-13 21:45:46,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765423759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:45:46,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:45:46,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:45:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687411132] [2022-07-13 21:45:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:45:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:45:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:45:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:45:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:45:46,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-13 21:45:46,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:46,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:45:46,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-13 21:45:46,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:45:49,132 INFO L129 PetriNetUnfolder]: 8972/16036 cut-off events. [2022-07-13 21:45:49,132 INFO L130 PetriNetUnfolder]: For 46172/46175 co-relation queries the response was YES. [2022-07-13 21:45:49,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53390 conditions, 16036 events. 8972/16036 cut-off events. For 46172/46175 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 130616 event pairs, 1200 based on Foata normal form. 330/16130 useless extension candidates. Maximal degree in co-relation 53304. Up to 3520 conditions per place. [2022-07-13 21:45:49,246 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 55 selfloop transitions, 15 changer transitions 106/263 dead transitions. [2022-07-13 21:45:49,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 263 transitions, 1658 flow [2022-07-13 21:45:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:45:49,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:45:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1502 transitions. [2022-07-13 21:45:49,250 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8312119535141118 [2022-07-13 21:45:49,250 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1502 transitions. [2022-07-13 21:45:49,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1502 transitions. [2022-07-13 21:45:49,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:45:49,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1502 transitions. [2022-07-13 21:45:49,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.53846153846153) internal successors, (1502), 13 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:49,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:49,255 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:49,255 INFO L186 Difference]: Start difference. First operand has 158 places, 130 transitions, 478 flow. Second operand 13 states and 1502 transitions. [2022-07-13 21:45:49,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 263 transitions, 1658 flow [2022-07-13 21:45:49,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 263 transitions, 1577 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-07-13 21:45:49,524 INFO L242 Difference]: Finished difference. Result has 169 places, 137 transitions, 624 flow [2022-07-13 21:45:49,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=624, PETRI_PLACES=169, PETRI_TRANSITIONS=137} [2022-07-13 21:45:49,525 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 23 predicate places. [2022-07-13 21:45:49,526 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 137 transitions, 624 flow [2022-07-13 21:45:49,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:49,526 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:45:49,526 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:45:49,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:45:49,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:45:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:45:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1348306673, now seen corresponding path program 1 times [2022-07-13 21:45:49,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:45:49,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333369491] [2022-07-13 21:45:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:45:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:45:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:45:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:45:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:45:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333369491] [2022-07-13 21:45:49,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333369491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:45:49,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:45:49,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:45:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178914754] [2022-07-13 21:45:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:45:49,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:45:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:45:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:45:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:45:49,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-13 21:45:49,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 137 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:49,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:45:49,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-13 21:45:49,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:45:54,336 INFO L129 PetriNetUnfolder]: 21401/37736 cut-off events. [2022-07-13 21:45:54,336 INFO L130 PetriNetUnfolder]: For 54787/72336 co-relation queries the response was YES. [2022-07-13 21:45:54,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91890 conditions, 37736 events. 21401/37736 cut-off events. For 54787/72336 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 353047 event pairs, 1502 based on Foata normal form. 371/35878 useless extension candidates. Maximal degree in co-relation 91795. Up to 11388 conditions per place. [2022-07-13 21:45:54,762 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 101 selfloop transitions, 20 changer transitions 0/233 dead transitions. [2022-07-13 21:45:54,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 233 transitions, 1288 flow [2022-07-13 21:45:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:45:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:45:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-07-13 21:45:54,765 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-07-13 21:45:54,765 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-07-13 21:45:54,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-07-13 21:45:54,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:45:54,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-07-13 21:45:54,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:54,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:54,770 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:54,770 INFO L186 Difference]: Start difference. First operand has 169 places, 137 transitions, 624 flow. Second operand 10 states and 1227 transitions. [2022-07-13 21:45:54,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 233 transitions, 1288 flow [2022-07-13 21:45:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 233 transitions, 1186 flow, removed 49 selfloop flow, removed 10 redundant places. [2022-07-13 21:45:54,857 INFO L242 Difference]: Finished difference. Result has 165 places, 155 transitions, 707 flow [2022-07-13 21:45:54,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=707, PETRI_PLACES=165, PETRI_TRANSITIONS=155} [2022-07-13 21:45:54,857 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 19 predicate places. [2022-07-13 21:45:54,858 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 155 transitions, 707 flow [2022-07-13 21:45:54,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:54,858 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:45:54,858 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:45:54,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:45:54,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:45:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:45:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash -561857278, now seen corresponding path program 1 times [2022-07-13 21:45:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:45:54,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312138372] [2022-07-13 21:45:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:45:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:45:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:45:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:45:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:45:54,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312138372] [2022-07-13 21:45:54,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312138372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:45:54,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:45:54,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:45:54,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061444667] [2022-07-13 21:45:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:45:54,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:45:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:45:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:45:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:45:54,949 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-13 21:45:54,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 155 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:45:54,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:45:54,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-13 21:45:54,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:45:59,756 INFO L129 PetriNetUnfolder]: 20000/36860 cut-off events. [2022-07-13 21:45:59,756 INFO L130 PetriNetUnfolder]: For 68385/87163 co-relation queries the response was YES. [2022-07-13 21:46:00,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113786 conditions, 36860 events. 20000/36860 cut-off events. For 68385/87163 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 368102 event pairs, 1100 based on Foata normal form. 880/36146 useless extension candidates. Maximal degree in co-relation 113692. Up to 7040 conditions per place. [2022-07-13 21:46:00,125 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 132 selfloop transitions, 38 changer transitions 0/282 dead transitions. [2022-07-13 21:46:00,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 282 transitions, 1767 flow [2022-07-13 21:46:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:46:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:46:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1600 transitions. [2022-07-13 21:46:00,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854454897620365 [2022-07-13 21:46:00,129 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1600 transitions. [2022-07-13 21:46:00,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1600 transitions. [2022-07-13 21:46:00,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:46:00,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1600 transitions. [2022-07-13 21:46:00,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.07692307692308) internal successors, (1600), 13 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:00,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:00,139 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:00,139 INFO L186 Difference]: Start difference. First operand has 165 places, 155 transitions, 707 flow. Second operand 13 states and 1600 transitions. [2022-07-13 21:46:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 282 transitions, 1767 flow [2022-07-13 21:46:00,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 282 transitions, 1747 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-07-13 21:46:00,771 INFO L242 Difference]: Finished difference. Result has 176 places, 175 transitions, 980 flow [2022-07-13 21:46:00,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=980, PETRI_PLACES=176, PETRI_TRANSITIONS=175} [2022-07-13 21:46:00,772 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 30 predicate places. [2022-07-13 21:46:00,772 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 175 transitions, 980 flow [2022-07-13 21:46:00,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:00,773 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:46:00,773 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:46:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:46:00,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:46:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:46:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1184555868, now seen corresponding path program 1 times [2022-07-13 21:46:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:46:00,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52218634] [2022-07-13 21:46:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:46:00,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:46:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:46:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:46:00,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:46:00,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52218634] [2022-07-13 21:46:00,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52218634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:46:00,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:46:00,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:46:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620001110] [2022-07-13 21:46:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:46:00,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:46:00,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:46:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:46:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:46:00,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-13 21:46:00,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 175 transitions, 980 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:00,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:46:00,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-13 21:46:00,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:46:05,764 INFO L129 PetriNetUnfolder]: 19424/35999 cut-off events. [2022-07-13 21:46:05,764 INFO L130 PetriNetUnfolder]: For 118855/137425 co-relation queries the response was YES. [2022-07-13 21:46:06,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133008 conditions, 35999 events. 19424/35999 cut-off events. For 118855/137425 co-relation queries the response was YES. Maximal size of possible extension queue 2541. Compared 363802 event pairs, 1040 based on Foata normal form. 635/35061 useless extension candidates. Maximal degree in co-relation 132912. Up to 6854 conditions per place. [2022-07-13 21:46:06,150 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 128 selfloop transitions, 58 changer transitions 30/328 dead transitions. [2022-07-13 21:46:06,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 328 transitions, 2438 flow [2022-07-13 21:46:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:46:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:46:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1972 transitions. [2022-07-13 21:46:06,154 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-13 21:46:06,155 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1972 transitions. [2022-07-13 21:46:06,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1972 transitions. [2022-07-13 21:46:06,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:46:06,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1972 transitions. [2022-07-13 21:46:06,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.25) internal successors, (1972), 16 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:06,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:06,162 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:06,162 INFO L186 Difference]: Start difference. First operand has 176 places, 175 transitions, 980 flow. Second operand 16 states and 1972 transitions. [2022-07-13 21:46:06,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 328 transitions, 2438 flow [2022-07-13 21:46:11,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 328 transitions, 2329 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-07-13 21:46:11,938 INFO L242 Difference]: Finished difference. Result has 191 places, 201 transitions, 1340 flow [2022-07-13 21:46:11,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1340, PETRI_PLACES=191, PETRI_TRANSITIONS=201} [2022-07-13 21:46:11,939 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 45 predicate places. [2022-07-13 21:46:11,939 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 201 transitions, 1340 flow [2022-07-13 21:46:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:11,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:46:11,940 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:46:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:46:11,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:46:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:46:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash -928883341, now seen corresponding path program 1 times [2022-07-13 21:46:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:46:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524006194] [2022-07-13 21:46:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:46:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:46:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:46:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:46:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:46:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524006194] [2022-07-13 21:46:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524006194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:46:12,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:46:12,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:46:12,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576469095] [2022-07-13 21:46:12,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:46:12,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:46:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:46:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:46:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:46:12,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-13 21:46:12,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 201 transitions, 1340 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:12,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:46:12,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-13 21:46:12,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:46:16,727 INFO L129 PetriNetUnfolder]: 19344/35467 cut-off events. [2022-07-13 21:46:16,727 INFO L130 PetriNetUnfolder]: For 120186/137290 co-relation queries the response was YES. [2022-07-13 21:46:17,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131489 conditions, 35467 events. 19344/35467 cut-off events. For 120186/137290 co-relation queries the response was YES. Maximal size of possible extension queue 2484. Compared 353974 event pairs, 1201 based on Foata normal form. 402/34340 useless extension candidates. Maximal degree in co-relation 131388. Up to 4610 conditions per place. [2022-07-13 21:46:17,168 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 111 selfloop transitions, 63 changer transitions 41/327 dead transitions. [2022-07-13 21:46:17,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 327 transitions, 2537 flow [2022-07-13 21:46:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 21:46:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-13 21:46:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2293 transitions. [2022-07-13 21:46:17,172 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8682317304051496 [2022-07-13 21:46:17,172 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2293 transitions. [2022-07-13 21:46:17,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2293 transitions. [2022-07-13 21:46:17,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:46:17,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2293 transitions. [2022-07-13 21:46:17,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 120.6842105263158) internal successors, (2293), 19 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:17,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 139.0) internal successors, (2780), 20 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:17,181 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 139.0) internal successors, (2780), 20 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:17,181 INFO L186 Difference]: Start difference. First operand has 191 places, 201 transitions, 1340 flow. Second operand 19 states and 2293 transitions. [2022-07-13 21:46:17,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 327 transitions, 2537 flow [2022-07-13 21:46:23,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 327 transitions, 2122 flow, removed 161 selfloop flow, removed 16 redundant places. [2022-07-13 21:46:23,352 INFO L242 Difference]: Finished difference. Result has 200 places, 200 transitions, 1168 flow [2022-07-13 21:46:23,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1168, PETRI_PLACES=200, PETRI_TRANSITIONS=200} [2022-07-13 21:46:23,353 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 54 predicate places. [2022-07-13 21:46:23,353 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 200 transitions, 1168 flow [2022-07-13 21:46:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:23,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:46:23,354 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:46:23,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:46:23,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:46:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:46:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash 857185854, now seen corresponding path program 1 times [2022-07-13 21:46:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:46:23,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218494203] [2022-07-13 21:46:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:46:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:46:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:46:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:46:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:46:23,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218494203] [2022-07-13 21:46:23,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218494203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:46:23,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:46:23,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:46:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974715384] [2022-07-13 21:46:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:46:23,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:46:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:46:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:46:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:46:23,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 139 [2022-07-13 21:46:23,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 200 transitions, 1168 flow. Second operand has 10 states, 10 states have (on average 103.4) internal successors, (1034), 10 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:23,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:46:23,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 139 [2022-07-13 21:46:23,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:46:27,600 INFO L129 PetriNetUnfolder]: 10763/34174 cut-off events. [2022-07-13 21:46:27,600 INFO L130 PetriNetUnfolder]: For 77136/80227 co-relation queries the response was YES. [2022-07-13 21:46:28,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111542 conditions, 34174 events. 10763/34174 cut-off events. For 77136/80227 co-relation queries the response was YES. Maximal size of possible extension queue 4113. Compared 514765 event pairs, 239 based on Foata normal form. 19/31989 useless extension candidates. Maximal degree in co-relation 111434. Up to 3223 conditions per place. [2022-07-13 21:46:28,124 INFO L132 encePairwiseOnDemand]: 115/139 looper letters, 111 selfloop transitions, 100 changer transitions 8/365 dead transitions. [2022-07-13 21:46:28,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 365 transitions, 2700 flow [2022-07-13 21:46:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:46:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:46:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2022-07-13 21:46:28,127 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8085224128389596 [2022-07-13 21:46:28,127 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2022-07-13 21:46:28,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2022-07-13 21:46:28,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:46:28,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2022-07-13 21:46:28,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.38461538461539) internal successors, (1461), 13 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:28,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:28,132 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:28,132 INFO L186 Difference]: Start difference. First operand has 200 places, 200 transitions, 1168 flow. Second operand 13 states and 1461 transitions. [2022-07-13 21:46:28,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 365 transitions, 2700 flow [2022-07-13 21:46:34,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 365 transitions, 2398 flow, removed 103 selfloop flow, removed 17 redundant places. [2022-07-13 21:46:34,123 INFO L242 Difference]: Finished difference. Result has 203 places, 284 transitions, 2138 flow [2022-07-13 21:46:34,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2138, PETRI_PLACES=203, PETRI_TRANSITIONS=284} [2022-07-13 21:46:34,123 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 57 predicate places. [2022-07-13 21:46:34,124 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 284 transitions, 2138 flow [2022-07-13 21:46:34,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.4) internal successors, (1034), 10 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:34,124 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:46:34,124 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:46:34,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:46:34,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:46:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:46:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1040173294, now seen corresponding path program 2 times [2022-07-13 21:46:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:46:34,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787869610] [2022-07-13 21:46:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:46:34,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:46:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:46:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:46:34,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:46:34,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787869610] [2022-07-13 21:46:34,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787869610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:46:34,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:46:34,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:46:34,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643592336] [2022-07-13 21:46:34,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:46:34,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:46:34,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:46:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:46:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:46:34,392 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-13 21:46:34,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 284 transitions, 2138 flow. Second operand has 13 states, 13 states have (on average 108.15384615384616) internal successors, (1406), 13 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:34,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:46:34,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-13 21:46:34,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:46:35,185 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1129] L806-->L809: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0][220], [Black: 348#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), Black: 374#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= ~__unbuffered_cnt~0 3) (<= 0 ~main$tmp_guard0~0)), 42#L809true, Black: 342#true, 32#L796true, Black: 182#true, Black: 265#(and (= ~__unbuffered_cnt~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), 94#L766true, Black: 257#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), P0Thread1of1ForFork3InUse, Black: 269#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), Black: 254#true, Black: 332#(and (<= ~__unbuffered_cnt~0 2) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), P2Thread1of1ForFork2InUse, 185#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 312#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), P3Thread1of1ForFork0InUse, Black: 307#true, P1Thread1of1ForFork1InUse, 393#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 261#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), Black: 400#(and (= ~a$w_buff0_used~0 1) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (= ~a$r_buff0_thd1~0 1)), Black: 407#(and (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (not (= ~y~0 0))), Black: 390#(= ~a$w_buff0_used~0 0), Black: 398#(and (= ~a$w_buff0_used~0 0) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0)))), Black: 411#(and (<= 1 ~main$tmp_guard1~0) (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (not (= ~y~0 0))), Black: 389#(and (= ~a$w_buff0_used~0 1) (= ~a$r_buff0_thd1~0 1)), Black: 405#(and (= ~a$w_buff0_used~0 0) (not (= ~y~0 0))), Black: 387#true, Black: 413#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (not (= ~y~0 0))), Black: 409#(and (<= 1 ~main$tmp_guard1~0) (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (not (= ~y~0 0))), Black: 281#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), Black: 277#true, Black: 299#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), Black: 295#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= ~__unbuffered_cnt~0 1) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), Black: 157#true, 221#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 218#true, 431#(and (= ~a$r_buff1_thd4~0 0) (= ~a$r_buff1_thd2~0 0) (= ~a$r_buff1_thd3~0 0) (= ~a$w_buff0_used~0 ~a$w_buff0~0) (= ~a$w_buff0_used~0 1) (= ~a$r_buff0_thd2~0 0) (= ~a$r_buff0_thd3~0 0) (= ~a$r_buff0_thd1~0 1) (= ~a$r_buff0_thd4~0 0)), 31#L876-3true, 11#L829true, Black: 372#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (<= ~__unbuffered_cnt~0 3) (<= 0 ~main$tmp_guard0~0)), Black: 362#(and (<= ~main$tmp_guard0~0 0) (<= ~__unbuffered_cnt~0 3) (<= 0 ~main$tmp_guard0~0))]) [2022-07-13 21:46:35,185 INFO L384 tUnfolder$Statistics]: this new event has 83 ancestors and is cut-off event [2022-07-13 21:46:35,185 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-07-13 21:46:35,185 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-07-13 21:46:35,185 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-07-13 21:46:39,181 INFO L129 PetriNetUnfolder]: 12840/41456 cut-off events. [2022-07-13 21:46:39,181 INFO L130 PetriNetUnfolder]: For 72350/75699 co-relation queries the response was YES. [2022-07-13 21:46:39,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122261 conditions, 41456 events. 12840/41456 cut-off events. For 72350/75699 co-relation queries the response was YES. Maximal size of possible extension queue 5017. Compared 648088 event pairs, 312 based on Foata normal form. 160/38884 useless extension candidates. Maximal degree in co-relation 122220. Up to 4163 conditions per place. [2022-07-13 21:46:39,793 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 53 selfloop transitions, 17 changer transitions 9/311 dead transitions. [2022-07-13 21:46:39,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 311 transitions, 2484 flow [2022-07-13 21:46:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:46:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 21:46:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1323 transitions. [2022-07-13 21:46:39,797 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7931654676258992 [2022-07-13 21:46:39,797 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1323 transitions. [2022-07-13 21:46:39,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1323 transitions. [2022-07-13 21:46:39,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:46:39,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1323 transitions. [2022-07-13 21:46:39,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 110.25) internal successors, (1323), 12 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:39,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:39,813 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:39,813 INFO L186 Difference]: Start difference. First operand has 203 places, 284 transitions, 2138 flow. Second operand 12 states and 1323 transitions. [2022-07-13 21:46:39,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 311 transitions, 2484 flow [2022-07-13 21:46:48,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 311 transitions, 2474 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-07-13 21:46:48,772 INFO L242 Difference]: Finished difference. Result has 213 places, 287 transitions, 2235 flow [2022-07-13 21:46:48,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2235, PETRI_PLACES=213, PETRI_TRANSITIONS=287} [2022-07-13 21:46:48,773 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 67 predicate places. [2022-07-13 21:46:48,773 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 287 transitions, 2235 flow [2022-07-13 21:46:48,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 108.15384615384616) internal successors, (1406), 13 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:48,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:46:48,776 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:46:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:46:48,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 21:46:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:46:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash -660980030, now seen corresponding path program 3 times [2022-07-13 21:46:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:46:48,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893129394] [2022-07-13 21:46:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:46:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:46:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:46:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:46:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:46:48,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893129394] [2022-07-13 21:46:48,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893129394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:46:48,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:46:48,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:46:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119878222] [2022-07-13 21:46:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:46:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:46:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:46:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:46:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:46:48,941 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 139 [2022-07-13 21:46:48,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 287 transitions, 2235 flow. Second operand has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:46:48,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:46:48,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 139 [2022-07-13 21:46:48,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand