./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg --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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:58:03,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:58:03,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:58:03,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:58:03,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:58:03,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:58:03,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:58:03,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:58:03,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:58:03,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:58:03,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:58:03,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:58:03,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:58:03,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:58:03,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:58:03,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:58:03,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:58:03,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:58:03,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:58:03,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:58:03,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:58:03,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:58:03,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:58:03,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:58:03,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:58:03,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:58:03,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:58:03,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:58:03,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:58:03,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:58:03,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:58:03,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:58:03,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:58:03,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:58:03,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:58:03,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:58:03,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:58:03,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:58:03,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:58:03,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:58:03,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:58:03,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:58:03,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:58:03,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:58:03,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:58:03,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:58:03,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:58:03,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:58:03,589 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:58:03,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:58:03,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:58:03,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:58:03,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:58:03,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:58:03,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:58:03,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:58:03,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:58:03,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:58:03,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:58:03,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:58:03,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:58:03,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:58:03,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:58:03,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:58:03,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:03,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:58:03,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:58:03,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:58:03,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:58:03,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:58:03,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:58:03,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:58:03,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:58:03,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:58:03,601 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e [2021-10-28 09:58:03,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:58:03,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:58:03,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:58:03,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:58:03,945 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:58:03,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2021-10-28 09:58:04,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/data/bcf7ad1bc/ee35a9ddeb7242abba83ecae5a18e540/FLAGefdec6937 [2021-10-28 09:58:04,781 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:58:04,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2021-10-28 09:58:04,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/data/bcf7ad1bc/ee35a9ddeb7242abba83ecae5a18e540/FLAGefdec6937 [2021-10-28 09:58:05,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/data/bcf7ad1bc/ee35a9ddeb7242abba83ecae5a18e540 [2021-10-28 09:58:05,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:58:05,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:58:05,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:05,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:58:05,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:58:05,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87ea914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05, skipping insertion in model container [2021-10-28 09:58:05,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:58:05,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:58:05,507 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2848,2861] [2021-10-28 09:58:05,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:05,528 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:58:05,559 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2848,2861] [2021-10-28 09:58:05,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:05,585 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:58:05,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05 WrapperNode [2021-10-28 09:58:05,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:05,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:58:05,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:58:05,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:58:05,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:58:05,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:58:05,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:58:05,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:58:05,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:58:05,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:58:05,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:58:05,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:58:05,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (1/1) ... [2021-10-28 09:58:05,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:05,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:58:05,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:58:05,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:58:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:58:05,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:58:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:58:05,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:58:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:58:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:58:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:58:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:58:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:58:05,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:58:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:58:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:58:05,819 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:58:06,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:58:06,503 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-28 09:58:06,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:06 BoogieIcfgContainer [2021-10-28 09:58:06,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:58:06,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:58:06,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:58:06,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:58:06,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:58:05" (1/3) ... [2021-10-28 09:58:06,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1283b4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:06, skipping insertion in model container [2021-10-28 09:58:06,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:05" (2/3) ... [2021-10-28 09:58:06,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1283b4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:06, skipping insertion in model container [2021-10-28 09:58:06,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:06" (3/3) ... [2021-10-28 09:58:06,533 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2021-10-28 09:58:06,539 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:58:06,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:58:06,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:58:06,540 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:58:06,639 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,640 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,641 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,641 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,643 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,646 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,646 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,647 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,649 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,650 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,650 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,650 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,651 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,651 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,651 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,652 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,652 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,652 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,653 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,653 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,653 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,653 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,654 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,654 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,656 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,656 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,656 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,658 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,658 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,659 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,659 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,659 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,660 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,660 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,660 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,661 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,661 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,661 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,663 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,663 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,663 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,664 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,664 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,664 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,666 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,666 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,666 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,692 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,692 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,693 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,693 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,695 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,696 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,697 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,697 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,697 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,697 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,698 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,700 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,701 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,720 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,720 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,721 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,721 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,721 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,721 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,722 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,722 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,722 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,722 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,723 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,723 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,728 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,728 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,728 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,728 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,729 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,729 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,729 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,736 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,736 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,742 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,743 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,743 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,743 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,743 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,745 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,745 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:58:06,754 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 09:58:06,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:58:06,829 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:58:06,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:58:06,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 224 transitions, 464 flow [2021-10-28 09:58:07,004 INFO L129 PetriNetUnfolder]: 25/222 cut-off events. [2021-10-28 09:58:07,004 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:58:07,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 222 events. 25/222 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2021-10-28 09:58:07,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 224 transitions, 464 flow [2021-10-28 09:58:07,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 214 transitions, 440 flow [2021-10-28 09:58:07,083 INFO L129 PetriNetUnfolder]: 25/213 cut-off events. [2021-10-28 09:58:07,083 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:58:07,083 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:07,084 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:07,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1724889782, now seen corresponding path program 1 times [2021-10-28 09:58:07,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:07,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854313526] [2021-10-28 09:58:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:07,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:07,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:07,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854313526] [2021-10-28 09:58:07,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854313526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:07,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:07,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:58:07,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668857590] [2021-10-28 09:58:07,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:58:07,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:58:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:58:07,595 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 224 [2021-10-28 09:58:07,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 214 transitions, 440 flow. Second operand has 2 states, 2 states have (on average 213.0) internal successors, (426), 2 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:07,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:07,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 224 [2021-10-28 09:58:07,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:07,742 INFO L129 PetriNetUnfolder]: 14/203 cut-off events. [2021-10-28 09:58:07,743 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:58:07,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 203 events. 14/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 302 event pairs, 0 based on Foata normal form. 11/193 useless extension candidates. Maximal degree in co-relation 209. Up to 3 conditions per place. [2021-10-28 09:58:07,747 INFO L132 encePairwiseOnDemand]: 213/224 looper letters, 0 selfloop transitions, 0 changer transitions 7/203 dead transitions. [2021-10-28 09:58:07,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 203 transitions, 418 flow [2021-10-28 09:58:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:58:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 09:58:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 435 transitions. [2021-10-28 09:58:07,778 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9709821428571429 [2021-10-28 09:58:07,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 435 transitions. [2021-10-28 09:58:07,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 435 transitions. [2021-10-28 09:58:07,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:07,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 435 transitions. [2021-10-28 09:58:07,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 217.5) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:07,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:07,814 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:07,817 INFO L186 Difference]: Start difference. First operand has 196 places, 214 transitions, 440 flow. Second operand 2 states and 435 transitions. [2021-10-28 09:58:07,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 203 transitions, 418 flow [2021-10-28 09:58:07,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 203 transitions, 410 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:58:07,832 INFO L242 Difference]: Finished difference. Result has 193 places, 196 transitions, 396 flow [2021-10-28 09:58:07,835 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=193, PETRI_TRANSITIONS=196} [2021-10-28 09:58:07,836 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -3 predicate places. [2021-10-28 09:58:07,837 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 196 transitions, 396 flow [2021-10-28 09:58:07,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 213.0) internal successors, (426), 2 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:07,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:07,838 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:07,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:58:07,839 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1921787016, now seen corresponding path program 1 times [2021-10-28 09:58:07,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:07,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133660787] [2021-10-28 09:58:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:07,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:08,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:08,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133660787] [2021-10-28 09:58:08,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133660787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:08,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:08,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:08,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254291589] [2021-10-28 09:58:08,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:08,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:08,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 224 [2021-10-28 09:58:08,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 196 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:08,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 224 [2021-10-28 09:58:08,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:08,218 INFO L129 PetriNetUnfolder]: 13/215 cut-off events. [2021-10-28 09:58:08,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:58:08,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 215 events. 13/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 223. Up to 5 conditions per place. [2021-10-28 09:58:08,233 INFO L132 encePairwiseOnDemand]: 221/224 looper letters, 4 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2021-10-28 09:58:08,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 197 transitions, 410 flow [2021-10-28 09:58:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:58:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2021-10-28 09:58:08,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2021-10-28 09:58:08,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2021-10-28 09:58:08,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2021-10-28 09:58:08,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:08,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2021-10-28 09:58:08,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,255 INFO L186 Difference]: Start difference. First operand has 193 places, 196 transitions, 396 flow. Second operand 3 states and 628 transitions. [2021-10-28 09:58:08,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 197 transitions, 410 flow [2021-10-28 09:58:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 197 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:58:08,279 INFO L242 Difference]: Finished difference. Result has 189 places, 196 transitions, 404 flow [2021-10-28 09:58:08,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=189, PETRI_TRANSITIONS=196} [2021-10-28 09:58:08,281 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -7 predicate places. [2021-10-28 09:58:08,281 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 196 transitions, 404 flow [2021-10-28 09:58:08,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,283 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:08,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:08,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:58:08,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2031512262, now seen corresponding path program 1 times [2021-10-28 09:58:08,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:08,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875079168] [2021-10-28 09:58:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:08,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:08,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:08,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875079168] [2021-10-28 09:58:08,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875079168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:08,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:08,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:08,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81920955] [2021-10-28 09:58:08,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:08,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:08,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:08,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:08,448 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 224 [2021-10-28 09:58:08,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 196 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:08,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 224 [2021-10-28 09:58:08,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:08,530 INFO L129 PetriNetUnfolder]: 12/252 cut-off events. [2021-10-28 09:58:08,530 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:58:08,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 252 events. 12/252 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 448 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 264. Up to 5 conditions per place. [2021-10-28 09:58:08,534 INFO L132 encePairwiseOnDemand]: 221/224 looper letters, 4 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2021-10-28 09:58:08,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 197 transitions, 418 flow [2021-10-28 09:58:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:58:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2021-10-28 09:58:08,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2021-10-28 09:58:08,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2021-10-28 09:58:08,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2021-10-28 09:58:08,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:08,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2021-10-28 09:58:08,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,548 INFO L186 Difference]: Start difference. First operand has 189 places, 196 transitions, 404 flow. Second operand 3 states and 628 transitions. [2021-10-28 09:58:08,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 197 transitions, 418 flow [2021-10-28 09:58:08,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 197 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:58:08,580 INFO L242 Difference]: Finished difference. Result has 190 places, 196 transitions, 408 flow [2021-10-28 09:58:08,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=190, PETRI_TRANSITIONS=196} [2021-10-28 09:58:08,581 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -6 predicate places. [2021-10-28 09:58:08,581 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 196 transitions, 408 flow [2021-10-28 09:58:08,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:08,582 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:08,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:58:08,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1292257270, now seen corresponding path program 1 times [2021-10-28 09:58:08,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:08,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072507917] [2021-10-28 09:58:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:08,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:08,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:08,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072507917] [2021-10-28 09:58:08,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072507917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:08,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:08,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:08,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575657801] [2021-10-28 09:58:08,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:08,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:08,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 224 [2021-10-28 09:58:08,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 196 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:08,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 224 [2021-10-28 09:58:08,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:08,856 INFO L129 PetriNetUnfolder]: 51/589 cut-off events. [2021-10-28 09:58:08,857 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:58:08,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 589 events. 51/589 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3054 event pairs, 9 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 654. Up to 29 conditions per place. [2021-10-28 09:58:08,864 INFO L132 encePairwiseOnDemand]: 218/224 looper letters, 14 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2021-10-28 09:58:08,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 200 transitions, 448 flow [2021-10-28 09:58:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:58:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2021-10-28 09:58:08,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9226190476190477 [2021-10-28 09:58:08,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2021-10-28 09:58:08,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2021-10-28 09:58:08,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:08,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2021-10-28 09:58:08,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,878 INFO L186 Difference]: Start difference. First operand has 190 places, 196 transitions, 408 flow. Second operand 3 states and 620 transitions. [2021-10-28 09:58:08,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 200 transitions, 448 flow [2021-10-28 09:58:08,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 200 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:58:08,886 INFO L242 Difference]: Finished difference. Result has 192 places, 198 transitions, 428 flow [2021-10-28 09:58:08,887 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=192, PETRI_TRANSITIONS=198} [2021-10-28 09:58:08,887 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -4 predicate places. [2021-10-28 09:58:08,887 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 198 transitions, 428 flow [2021-10-28 09:58:08,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:08,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:08,889 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:08,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:58:08,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:08,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:08,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1149578150, now seen corresponding path program 2 times [2021-10-28 09:58:08,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:08,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551293781] [2021-10-28 09:58:08,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:08,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:09,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:09,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551293781] [2021-10-28 09:58:09,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551293781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:09,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:09,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:09,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496394491] [2021-10-28 09:58:09,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:09,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:09,029 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 224 [2021-10-28 09:58:09,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 198 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:09,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 224 [2021-10-28 09:58:09,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:09,128 INFO L129 PetriNetUnfolder]: 27/355 cut-off events. [2021-10-28 09:58:09,129 INFO L130 PetriNetUnfolder]: For 29/53 co-relation queries the response was YES. [2021-10-28 09:58:09,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 355 events. 27/355 cut-off events. For 29/53 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1125 event pairs, 6 based on Foata normal form. 5/345 useless extension candidates. Maximal degree in co-relation 417. Up to 24 conditions per place. [2021-10-28 09:58:09,133 INFO L132 encePairwiseOnDemand]: 220/224 looper letters, 14 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2021-10-28 09:58:09,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 200 transitions, 468 flow [2021-10-28 09:58:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:58:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2021-10-28 09:58:09,153 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-10-28 09:58:09,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2021-10-28 09:58:09,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2021-10-28 09:58:09,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:09,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2021-10-28 09:58:09,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,162 INFO L186 Difference]: Start difference. First operand has 192 places, 198 transitions, 428 flow. Second operand 3 states and 616 transitions. [2021-10-28 09:58:09,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 200 transitions, 468 flow [2021-10-28 09:58:09,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 200 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:58:09,171 INFO L242 Difference]: Finished difference. Result has 195 places, 200 transitions, 450 flow [2021-10-28 09:58:09,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=195, PETRI_TRANSITIONS=200} [2021-10-28 09:58:09,173 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -1 predicate places. [2021-10-28 09:58:09,173 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 200 transitions, 450 flow [2021-10-28 09:58:09,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,174 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:09,175 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:09,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:58:09,175 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash -847073480, now seen corresponding path program 1 times [2021-10-28 09:58:09,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:09,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983705361] [2021-10-28 09:58:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:09,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:09,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:09,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983705361] [2021-10-28 09:58:09,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983705361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:09,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:09,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:58:09,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017191415] [2021-10-28 09:58:09,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:58:09,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:58:09,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:58:09,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 224 [2021-10-28 09:58:09,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 200 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:09,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 224 [2021-10-28 09:58:09,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:09,501 INFO L129 PetriNetUnfolder]: 21/403 cut-off events. [2021-10-28 09:58:09,501 INFO L130 PetriNetUnfolder]: For 38/73 co-relation queries the response was YES. [2021-10-28 09:58:09,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 403 events. 21/403 cut-off events. For 38/73 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1519 event pairs, 2 based on Foata normal form. 9/396 useless extension candidates. Maximal degree in co-relation 474. Up to 16 conditions per place. [2021-10-28 09:58:09,506 INFO L132 encePairwiseOnDemand]: 218/224 looper letters, 16 selfloop transitions, 4 changer transitions 0/204 dead transitions. [2021-10-28 09:58:09,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 204 transitions, 508 flow [2021-10-28 09:58:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:58:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 09:58:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 820 transitions. [2021-10-28 09:58:09,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9151785714285714 [2021-10-28 09:58:09,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 820 transitions. [2021-10-28 09:58:09,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 820 transitions. [2021-10-28 09:58:09,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:09,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 820 transitions. [2021-10-28 09:58:09,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,522 INFO L186 Difference]: Start difference. First operand has 195 places, 200 transitions, 450 flow. Second operand 4 states and 820 transitions. [2021-10-28 09:58:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 204 transitions, 508 flow [2021-10-28 09:58:09,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 204 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:58:09,532 INFO L242 Difference]: Finished difference. Result has 199 places, 202 transitions, 476 flow [2021-10-28 09:58:09,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=476, PETRI_PLACES=199, PETRI_TRANSITIONS=202} [2021-10-28 09:58:09,533 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 3 predicate places. [2021-10-28 09:58:09,533 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 202 transitions, 476 flow [2021-10-28 09:58:09,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:09,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:09,536 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:09,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:58:09,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1744717064, now seen corresponding path program 1 times [2021-10-28 09:58:09,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:09,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051327480] [2021-10-28 09:58:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:09,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:10,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:10,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051327480] [2021-10-28 09:58:10,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051327480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:10,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:10,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-10-28 09:58:10,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533423178] [2021-10-28 09:58:10,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:58:10,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:58:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:58:10,497 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 224 [2021-10-28 09:58:10,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 202 transitions, 476 flow. Second operand has 20 states, 20 states have (on average 143.5) internal successors, (2870), 20 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:10,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:10,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 224 [2021-10-28 09:58:10,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:12,640 INFO L129 PetriNetUnfolder]: 176/1792 cut-off events. [2021-10-28 09:58:12,640 INFO L130 PetriNetUnfolder]: For 78/114 co-relation queries the response was YES. [2021-10-28 09:58:12,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1792 events. 176/1792 cut-off events. For 78/114 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14409 event pairs, 60 based on Foata normal form. 4/1650 useless extension candidates. Maximal degree in co-relation 2602. Up to 179 conditions per place. [2021-10-28 09:58:12,662 INFO L132 encePairwiseOnDemand]: 198/224 looper letters, 126 selfloop transitions, 24 changer transitions 13/301 dead transitions. [2021-10-28 09:58:12,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 301 transitions, 1000 flow [2021-10-28 09:58:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 09:58:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-28 09:58:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3689 transitions. [2021-10-28 09:58:12,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65875 [2021-10-28 09:58:12,680 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3689 transitions. [2021-10-28 09:58:12,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3689 transitions. [2021-10-28 09:58:12,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:12,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3689 transitions. [2021-10-28 09:58:12,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 147.56) internal successors, (3689), 25 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 224.0) internal successors, (5824), 26 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,722 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 224.0) internal successors, (5824), 26 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,723 INFO L186 Difference]: Start difference. First operand has 199 places, 202 transitions, 476 flow. Second operand 25 states and 3689 transitions. [2021-10-28 09:58:12,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 301 transitions, 1000 flow [2021-10-28 09:58:12,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 301 transitions, 998 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:58:12,741 INFO L242 Difference]: Finished difference. Result has 234 places, 214 transitions, 594 flow [2021-10-28 09:58:12,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=594, PETRI_PLACES=234, PETRI_TRANSITIONS=214} [2021-10-28 09:58:12,742 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 38 predicate places. [2021-10-28 09:58:12,742 INFO L470 AbstractCegarLoop]: Abstraction has has 234 places, 214 transitions, 594 flow [2021-10-28 09:58:12,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 143.5) internal successors, (2870), 20 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:12,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:12,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:58:12,745 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1623272968, now seen corresponding path program 2 times [2021-10-28 09:58:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:12,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665290033] [2021-10-28 09:58:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:12,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:13,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:13,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665290033] [2021-10-28 09:58:13,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665290033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:13,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:13,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:13,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027678156] [2021-10-28 09:58:13,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:13,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:13,196 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 224 [2021-10-28 09:58:13,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 214 transitions, 594 flow. Second operand has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:13,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:13,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 224 [2021-10-28 09:58:13,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:14,315 INFO L129 PetriNetUnfolder]: 169/2068 cut-off events. [2021-10-28 09:58:14,316 INFO L130 PetriNetUnfolder]: For 162/205 co-relation queries the response was YES. [2021-10-28 09:58:14,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 2068 events. 169/2068 cut-off events. For 162/205 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 17715 event pairs, 53 based on Foata normal form. 12/1942 useless extension candidates. Maximal degree in co-relation 3204. Up to 402 conditions per place. [2021-10-28 09:58:14,338 INFO L132 encePairwiseOnDemand]: 213/224 looper letters, 64 selfloop transitions, 1 changer transitions 14/242 dead transitions. [2021-10-28 09:58:14,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 242 transitions, 824 flow [2021-10-28 09:58:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:58:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1982 transitions. [2021-10-28 09:58:14,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7373511904761905 [2021-10-28 09:58:14,348 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1982 transitions. [2021-10-28 09:58:14,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1982 transitions. [2021-10-28 09:58:14,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:14,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1982 transitions. [2021-10-28 09:58:14,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 165.16666666666666) internal successors, (1982), 12 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,370 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,370 INFO L186 Difference]: Start difference. First operand has 234 places, 214 transitions, 594 flow. Second operand 12 states and 1982 transitions. [2021-10-28 09:58:14,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 242 transitions, 824 flow [2021-10-28 09:58:14,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 242 transitions, 790 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-10-28 09:58:14,393 INFO L242 Difference]: Finished difference. Result has 241 places, 214 transitions, 595 flow [2021-10-28 09:58:14,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=595, PETRI_PLACES=241, PETRI_TRANSITIONS=214} [2021-10-28 09:58:14,394 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 45 predicate places. [2021-10-28 09:58:14,394 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 214 transitions, 595 flow [2021-10-28 09:58:14,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:14,398 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:14,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:58:14,399 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -193617050, now seen corresponding path program 2 times [2021-10-28 09:58:14,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:14,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285296394] [2021-10-28 09:58:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:14,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:14,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:14,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285296394] [2021-10-28 09:58:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285296394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:14,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:14,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:58:14,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064747633] [2021-10-28 09:58:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:58:14,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:58:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:58:14,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 224 [2021-10-28 09:58:14,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 214 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:14,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 224 [2021-10-28 09:58:14,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:14,843 INFO L129 PetriNetUnfolder]: 49/1152 cut-off events. [2021-10-28 09:58:14,843 INFO L130 PetriNetUnfolder]: For 193/320 co-relation queries the response was YES. [2021-10-28 09:58:14,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 1152 events. 49/1152 cut-off events. For 193/320 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7985 event pairs, 3 based on Foata normal form. 27/1137 useless extension candidates. Maximal degree in co-relation 1691. Up to 43 conditions per place. [2021-10-28 09:58:14,857 INFO L132 encePairwiseOnDemand]: 218/224 looper letters, 18 selfloop transitions, 4 changer transitions 0/218 dead transitions. [2021-10-28 09:58:14,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 218 transitions, 661 flow [2021-10-28 09:58:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:58:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 09:58:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 820 transitions. [2021-10-28 09:58:14,862 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9151785714285714 [2021-10-28 09:58:14,863 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 820 transitions. [2021-10-28 09:58:14,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 820 transitions. [2021-10-28 09:58:14,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:14,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 820 transitions. [2021-10-28 09:58:14,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,873 INFO L186 Difference]: Start difference. First operand has 241 places, 214 transitions, 595 flow. Second operand 4 states and 820 transitions. [2021-10-28 09:58:14,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 218 transitions, 661 flow [2021-10-28 09:58:14,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 218 transitions, 642 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-10-28 09:58:14,889 INFO L242 Difference]: Finished difference. Result has 227 places, 216 transitions, 608 flow [2021-10-28 09:58:14,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=608, PETRI_PLACES=227, PETRI_TRANSITIONS=216} [2021-10-28 09:58:14,890 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 31 predicate places. [2021-10-28 09:58:14,890 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 216 transitions, 608 flow [2021-10-28 09:58:14,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:14,892 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:14,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:58:14,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1649476180, now seen corresponding path program 1 times [2021-10-28 09:58:14,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:14,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240638082] [2021-10-28 09:58:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:14,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:15,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:15,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240638082] [2021-10-28 09:58:15,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240638082] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:15,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:15,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:15,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956657137] [2021-10-28 09:58:15,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:15,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:15,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:15,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 216 transitions, 608 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:15,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:15,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:15,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:15,556 INFO L129 PetriNetUnfolder]: 154/1704 cut-off events. [2021-10-28 09:58:15,556 INFO L130 PetriNetUnfolder]: For 287/343 co-relation queries the response was YES. [2021-10-28 09:58:15,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1704 events. 154/1704 cut-off events. For 287/343 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13412 event pairs, 61 based on Foata normal form. 3/1647 useless extension candidates. Maximal degree in co-relation 2722. Up to 494 conditions per place. [2021-10-28 09:58:15,573 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 67 selfloop transitions, 3 changer transitions 14/252 dead transitions. [2021-10-28 09:58:15,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 252 transitions, 851 flow [2021-10-28 09:58:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:58:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2174 transitions. [2021-10-28 09:58:15,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7465659340659341 [2021-10-28 09:58:15,583 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2174 transitions. [2021-10-28 09:58:15,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2174 transitions. [2021-10-28 09:58:15,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:15,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2174 transitions. [2021-10-28 09:58:15,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.23076923076923) internal successors, (2174), 13 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:15,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:15,614 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:15,622 INFO L186 Difference]: Start difference. First operand has 227 places, 216 transitions, 608 flow. Second operand 13 states and 2174 transitions. [2021-10-28 09:58:15,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 252 transitions, 851 flow [2021-10-28 09:58:15,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 252 transitions, 845 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-28 09:58:15,632 INFO L242 Difference]: Finished difference. Result has 249 places, 218 transitions, 645 flow [2021-10-28 09:58:15,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=645, PETRI_PLACES=249, PETRI_TRANSITIONS=218} [2021-10-28 09:58:15,634 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 53 predicate places. [2021-10-28 09:58:15,634 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 218 transitions, 645 flow [2021-10-28 09:58:15,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:15,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:15,636 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:15,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:58:15,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:15,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 370753876, now seen corresponding path program 2 times [2021-10-28 09:58:15,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:15,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236429779] [2021-10-28 09:58:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:15,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:15,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:15,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236429779] [2021-10-28 09:58:15,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236429779] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:15,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:15,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:15,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589543230] [2021-10-28 09:58:15,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:15,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:15,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:15,776 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:15,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 218 transitions, 645 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:15,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:15,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:15,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:16,257 INFO L129 PetriNetUnfolder]: 157/1701 cut-off events. [2021-10-28 09:58:16,257 INFO L130 PetriNetUnfolder]: For 667/741 co-relation queries the response was YES. [2021-10-28 09:58:16,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1701 events. 157/1701 cut-off events. For 667/741 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13274 event pairs, 70 based on Foata normal form. 3/1644 useless extension candidates. Maximal degree in co-relation 3208. Up to 563 conditions per place. [2021-10-28 09:58:16,278 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 52 selfloop transitions, 8 changer transitions 9/237 dead transitions. [2021-10-28 09:58:16,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 237 transitions, 886 flow [2021-10-28 09:58:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:58:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1837 transitions. [2021-10-28 09:58:16,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7455357142857143 [2021-10-28 09:58:16,286 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1837 transitions. [2021-10-28 09:58:16,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1837 transitions. [2021-10-28 09:58:16,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:16,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1837 transitions. [2021-10-28 09:58:16,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.0) internal successors, (1837), 11 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:16,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:16,301 INFO L186 Difference]: Start difference. First operand has 249 places, 218 transitions, 645 flow. Second operand 11 states and 1837 transitions. [2021-10-28 09:58:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 237 transitions, 886 flow [2021-10-28 09:58:16,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 237 transitions, 857 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-10-28 09:58:16,316 INFO L242 Difference]: Finished difference. Result has 252 places, 224 transitions, 709 flow [2021-10-28 09:58:16,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=709, PETRI_PLACES=252, PETRI_TRANSITIONS=224} [2021-10-28 09:58:16,317 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 56 predicate places. [2021-10-28 09:58:16,317 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 224 transitions, 709 flow [2021-10-28 09:58:16,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:16,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:16,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:16,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:58:16,320 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1549023984, now seen corresponding path program 3 times [2021-10-28 09:58:16,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:16,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279793791] [2021-10-28 09:58:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:16,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:16,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:16,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279793791] [2021-10-28 09:58:16,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279793791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:16,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:16,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:16,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023914996] [2021-10-28 09:58:16,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:16,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:16,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:16,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 224 transitions, 709 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:16,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:16,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:16,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:17,040 INFO L129 PetriNetUnfolder]: 151/1722 cut-off events. [2021-10-28 09:58:17,040 INFO L130 PetriNetUnfolder]: For 904/1002 co-relation queries the response was YES. [2021-10-28 09:58:17,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3429 conditions, 1722 events. 151/1722 cut-off events. For 904/1002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13672 event pairs, 70 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 3394. Up to 569 conditions per place. [2021-10-28 09:58:17,067 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 56 selfloop transitions, 10 changer transitions 9/243 dead transitions. [2021-10-28 09:58:17,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 243 transitions, 995 flow [2021-10-28 09:58:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:58:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1836 transitions. [2021-10-28 09:58:17,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7451298701298701 [2021-10-28 09:58:17,076 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1836 transitions. [2021-10-28 09:58:17,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1836 transitions. [2021-10-28 09:58:17,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:17,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1836 transitions. [2021-10-28 09:58:17,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 166.9090909090909) internal successors, (1836), 11 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:17,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:17,128 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:17,128 INFO L186 Difference]: Start difference. First operand has 252 places, 224 transitions, 709 flow. Second operand 11 states and 1836 transitions. [2021-10-28 09:58:17,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 243 transitions, 995 flow [2021-10-28 09:58:17,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 243 transitions, 956 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-10-28 09:58:17,147 INFO L242 Difference]: Finished difference. Result has 260 places, 231 transitions, 791 flow [2021-10-28 09:58:17,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=791, PETRI_PLACES=260, PETRI_TRANSITIONS=231} [2021-10-28 09:58:17,149 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 64 predicate places. [2021-10-28 09:58:17,149 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 231 transitions, 791 flow [2021-10-28 09:58:17,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:17,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:17,150 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:17,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:58:17,151 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -966047184, now seen corresponding path program 4 times [2021-10-28 09:58:17,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:17,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803692540] [2021-10-28 09:58:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:17,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:17,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:17,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803692540] [2021-10-28 09:58:17,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803692540] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:17,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:17,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:17,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088758673] [2021-10-28 09:58:17,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:17,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:17,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:17,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:17,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:17,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 231 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:17,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:17,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:17,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:18,016 INFO L129 PetriNetUnfolder]: 148/1740 cut-off events. [2021-10-28 09:58:18,016 INFO L130 PetriNetUnfolder]: For 1330/1443 co-relation queries the response was YES. [2021-10-28 09:58:18,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1740 events. 148/1740 cut-off events. For 1330/1443 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13937 event pairs, 70 based on Foata normal form. 3/1680 useless extension candidates. Maximal degree in co-relation 3607. Up to 494 conditions per place. [2021-10-28 09:58:18,042 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 68 selfloop transitions, 9 changer transitions 16/261 dead transitions. [2021-10-28 09:58:18,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 261 transitions, 1184 flow [2021-10-28 09:58:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:58:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2171 transitions. [2021-10-28 09:58:18,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7455357142857143 [2021-10-28 09:58:18,051 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2171 transitions. [2021-10-28 09:58:18,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2171 transitions. [2021-10-28 09:58:18,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:18,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2171 transitions. [2021-10-28 09:58:18,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,072 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,073 INFO L186 Difference]: Start difference. First operand has 260 places, 231 transitions, 791 flow. Second operand 13 states and 2171 transitions. [2021-10-28 09:58:18,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 261 transitions, 1184 flow [2021-10-28 09:58:18,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 261 transitions, 1124 flow, removed 30 selfloop flow, removed 4 redundant places. [2021-10-28 09:58:18,097 INFO L242 Difference]: Finished difference. Result has 273 places, 232 transitions, 829 flow [2021-10-28 09:58:18,098 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=829, PETRI_PLACES=273, PETRI_TRANSITIONS=232} [2021-10-28 09:58:18,098 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 77 predicate places. [2021-10-28 09:58:18,099 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 232 transitions, 829 flow [2021-10-28 09:58:18,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,099 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:18,100 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:18,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:58:18,100 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:18,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash -654527192, now seen corresponding path program 5 times [2021-10-28 09:58:18,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:18,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867639367] [2021-10-28 09:58:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:18,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:18,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:18,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867639367] [2021-10-28 09:58:18,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867639367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:18,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910327025] [2021-10-28 09:58:18,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:18,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:18,274 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:18,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 232 transitions, 829 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:18,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:18,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:18,814 INFO L129 PetriNetUnfolder]: 136/1698 cut-off events. [2021-10-28 09:58:18,814 INFO L130 PetriNetUnfolder]: For 1642/1755 co-relation queries the response was YES. [2021-10-28 09:58:18,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1698 events. 136/1698 cut-off events. For 1642/1755 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13543 event pairs, 64 based on Foata normal form. 9/1647 useless extension candidates. Maximal degree in co-relation 3535. Up to 551 conditions per place. [2021-10-28 09:58:18,838 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 55 selfloop transitions, 3 changer transitions 16/242 dead transitions. [2021-10-28 09:58:18,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 242 transitions, 1066 flow [2021-10-28 09:58:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:58:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1996 transitions. [2021-10-28 09:58:18,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7425595238095238 [2021-10-28 09:58:18,842 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1996 transitions. [2021-10-28 09:58:18,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1996 transitions. [2021-10-28 09:58:18,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:18,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1996 transitions. [2021-10-28 09:58:18,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 166.33333333333334) internal successors, (1996), 12 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,857 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,857 INFO L186 Difference]: Start difference. First operand has 273 places, 232 transitions, 829 flow. Second operand 12 states and 1996 transitions. [2021-10-28 09:58:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 242 transitions, 1066 flow [2021-10-28 09:58:18,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 242 transitions, 1036 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-28 09:58:18,879 INFO L242 Difference]: Finished difference. Result has 274 places, 225 transitions, 757 flow [2021-10-28 09:58:18,880 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=757, PETRI_PLACES=274, PETRI_TRANSITIONS=225} [2021-10-28 09:58:18,881 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 78 predicate places. [2021-10-28 09:58:18,881 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 225 transitions, 757 flow [2021-10-28 09:58:18,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:18,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:18,882 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:18,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:58:18,882 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash 546551912, now seen corresponding path program 6 times [2021-10-28 09:58:18,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:18,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515607320] [2021-10-28 09:58:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:18,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:19,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:19,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515607320] [2021-10-28 09:58:19,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515607320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:19,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:19,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:19,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443935977] [2021-10-28 09:58:19,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:19,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:19,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:19,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 225 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:19,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:19,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:19,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:19,484 INFO L129 PetriNetUnfolder]: 121/1539 cut-off events. [2021-10-28 09:58:19,485 INFO L130 PetriNetUnfolder]: For 1072/1131 co-relation queries the response was YES. [2021-10-28 09:58:19,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1539 events. 121/1539 cut-off events. For 1072/1131 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11695 event pairs, 61 based on Foata normal form. 3/1482 useless extension candidates. Maximal degree in co-relation 3007. Up to 476 conditions per place. [2021-10-28 09:58:19,509 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 46 selfloop transitions, 0 changer transitions 21/231 dead transitions. [2021-10-28 09:58:19,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 231 transitions, 931 flow [2021-10-28 09:58:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:58:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1992 transitions. [2021-10-28 09:58:19,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2021-10-28 09:58:19,515 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1992 transitions. [2021-10-28 09:58:19,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1992 transitions. [2021-10-28 09:58:19,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:19,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1992 transitions. [2021-10-28 09:58:19,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:19,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:19,530 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:19,531 INFO L186 Difference]: Start difference. First operand has 274 places, 225 transitions, 757 flow. Second operand 12 states and 1992 transitions. [2021-10-28 09:58:19,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 231 transitions, 931 flow [2021-10-28 09:58:19,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 231 transitions, 869 flow, removed 18 selfloop flow, removed 16 redundant places. [2021-10-28 09:58:19,546 INFO L242 Difference]: Finished difference. Result has 260 places, 210 transitions, 596 flow [2021-10-28 09:58:19,547 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=596, PETRI_PLACES=260, PETRI_TRANSITIONS=210} [2021-10-28 09:58:19,548 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 64 predicate places. [2021-10-28 09:58:19,548 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 210 transitions, 596 flow [2021-10-28 09:58:19,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:19,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:19,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:19,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:58:19,550 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1383677580, now seen corresponding path program 1 times [2021-10-28 09:58:19,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:19,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519536081] [2021-10-28 09:58:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:19,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:19,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:19,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519536081] [2021-10-28 09:58:19,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519536081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:19,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:19,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:19,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365630754] [2021-10-28 09:58:19,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:19,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:19,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:19,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 210 transitions, 596 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:19,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:19,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:19,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:20,092 INFO L129 PetriNetUnfolder]: 121/1494 cut-off events. [2021-10-28 09:58:20,093 INFO L130 PetriNetUnfolder]: For 592/636 co-relation queries the response was YES. [2021-10-28 09:58:20,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1494 events. 121/1494 cut-off events. For 592/636 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11122 event pairs, 43 based on Foata normal form. 3/1437 useless extension candidates. Maximal degree in co-relation 2683. Up to 422 conditions per place. [2021-10-28 09:58:20,112 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 47 selfloop transitions, 8 changer transitions 13/232 dead transitions. [2021-10-28 09:58:20,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 232 transitions, 854 flow [2021-10-28 09:58:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:58:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1836 transitions. [2021-10-28 09:58:20,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7451298701298701 [2021-10-28 09:58:20,117 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1836 transitions. [2021-10-28 09:58:20,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1836 transitions. [2021-10-28 09:58:20,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:20,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1836 transitions. [2021-10-28 09:58:20,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 166.9090909090909) internal successors, (1836), 11 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,130 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,132 INFO L186 Difference]: Start difference. First operand has 260 places, 210 transitions, 596 flow. Second operand 11 states and 1836 transitions. [2021-10-28 09:58:20,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 232 transitions, 854 flow [2021-10-28 09:58:20,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 232 transitions, 782 flow, removed 34 selfloop flow, removed 12 redundant places. [2021-10-28 09:58:20,145 INFO L242 Difference]: Finished difference. Result has 243 places, 216 transitions, 637 flow [2021-10-28 09:58:20,145 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=637, PETRI_PLACES=243, PETRI_TRANSITIONS=216} [2021-10-28 09:58:20,146 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 47 predicate places. [2021-10-28 09:58:20,146 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 216 transitions, 637 flow [2021-10-28 09:58:20,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:20,147 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:20,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:58:20,148 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash -922046582, now seen corresponding path program 2 times [2021-10-28 09:58:20,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:20,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150540923] [2021-10-28 09:58:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:20,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:20,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:20,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150540923] [2021-10-28 09:58:20,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150540923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:20,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:20,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:20,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658413185] [2021-10-28 09:58:20,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:20,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:20,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:20,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 216 transitions, 637 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:20,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:20,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:20,791 INFO L129 PetriNetUnfolder]: 118/1494 cut-off events. [2021-10-28 09:58:20,792 INFO L130 PetriNetUnfolder]: For 524/577 co-relation queries the response was YES. [2021-10-28 09:58:20,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1494 events. 118/1494 cut-off events. For 524/577 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11133 event pairs, 34 based on Foata normal form. 3/1437 useless extension candidates. Maximal degree in co-relation 2755. Up to 350 conditions per place. [2021-10-28 09:58:20,811 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 64 selfloop transitions, 6 changer transitions 18/252 dead transitions. [2021-10-28 09:58:20,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 252 transitions, 980 flow [2021-10-28 09:58:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:58:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2171 transitions. [2021-10-28 09:58:20,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7455357142857143 [2021-10-28 09:58:20,817 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2171 transitions. [2021-10-28 09:58:20,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2171 transitions. [2021-10-28 09:58:20,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:20,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2171 transitions. [2021-10-28 09:58:20,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,837 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,838 INFO L186 Difference]: Start difference. First operand has 243 places, 216 transitions, 637 flow. Second operand 13 states and 2171 transitions. [2021-10-28 09:58:20,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 252 transitions, 980 flow [2021-10-28 09:58:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 252 transitions, 910 flow, removed 31 selfloop flow, removed 6 redundant places. [2021-10-28 09:58:20,851 INFO L242 Difference]: Finished difference. Result has 253 places, 216 transitions, 649 flow [2021-10-28 09:58:20,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=649, PETRI_PLACES=253, PETRI_TRANSITIONS=216} [2021-10-28 09:58:20,853 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 57 predicate places. [2021-10-28 09:58:20,853 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 216 transitions, 649 flow [2021-10-28 09:58:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:20,854 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:20,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:58:20,855 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash -493016908, now seen corresponding path program 3 times [2021-10-28 09:58:20,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:20,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176930169] [2021-10-28 09:58:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:20,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:20,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:20,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176930169] [2021-10-28 09:58:20,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176930169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:20,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:20,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:20,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140423868] [2021-10-28 09:58:20,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:20,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:20,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:20,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 216 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:20,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:20,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:20,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:21,486 INFO L129 PetriNetUnfolder]: 115/1500 cut-off events. [2021-10-28 09:58:21,486 INFO L130 PetriNetUnfolder]: For 653/700 co-relation queries the response was YES. [2021-10-28 09:58:21,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 1500 events. 115/1500 cut-off events. For 653/700 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11318 event pairs, 25 based on Foata normal form. 3/1449 useless extension candidates. Maximal degree in co-relation 2791. Up to 341 conditions per place. [2021-10-28 09:58:21,511 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 66 selfloop transitions, 6 changer transitions 18/254 dead transitions. [2021-10-28 09:58:21,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 254 transitions, 1023 flow [2021-10-28 09:58:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:58:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2174 transitions. [2021-10-28 09:58:21,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7465659340659341 [2021-10-28 09:58:21,516 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2174 transitions. [2021-10-28 09:58:21,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2174 transitions. [2021-10-28 09:58:21,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:21,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2174 transitions. [2021-10-28 09:58:21,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.23076923076923) internal successors, (2174), 13 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:21,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:21,533 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:21,534 INFO L186 Difference]: Start difference. First operand has 253 places, 216 transitions, 649 flow. Second operand 13 states and 2174 transitions. [2021-10-28 09:58:21,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 254 transitions, 1023 flow [2021-10-28 09:58:21,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 254 transitions, 964 flow, removed 15 selfloop flow, removed 10 redundant places. [2021-10-28 09:58:21,547 INFO L242 Difference]: Finished difference. Result has 256 places, 216 transitions, 663 flow [2021-10-28 09:58:21,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=663, PETRI_PLACES=256, PETRI_TRANSITIONS=216} [2021-10-28 09:58:21,548 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 60 predicate places. [2021-10-28 09:58:21,549 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 216 transitions, 663 flow [2021-10-28 09:58:21,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:21,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:21,550 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:21,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:58:21,550 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -504323628, now seen corresponding path program 4 times [2021-10-28 09:58:21,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:21,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091077860] [2021-10-28 09:58:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:21,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:21,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:21,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091077860] [2021-10-28 09:58:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091077860] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:21,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:21,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:21,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761141723] [2021-10-28 09:58:21,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:21,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:21,696 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:21,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 216 transitions, 663 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:21,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:21,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:21,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:22,186 INFO L129 PetriNetUnfolder]: 103/1497 cut-off events. [2021-10-28 09:58:22,186 INFO L130 PetriNetUnfolder]: For 1010/1063 co-relation queries the response was YES. [2021-10-28 09:58:22,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1497 events. 103/1497 cut-off events. For 1010/1063 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11389 event pairs, 28 based on Foata normal form. 3/1446 useless extension candidates. Maximal degree in co-relation 2893. Up to 416 conditions per place. [2021-10-28 09:58:22,207 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 51 selfloop transitions, 10 changer transitions 13/238 dead transitions. [2021-10-28 09:58:22,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 238 transitions, 972 flow [2021-10-28 09:58:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:58:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1837 transitions. [2021-10-28 09:58:22,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7455357142857143 [2021-10-28 09:58:22,212 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1837 transitions. [2021-10-28 09:58:22,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1837 transitions. [2021-10-28 09:58:22,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:22,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1837 transitions. [2021-10-28 09:58:22,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.0) internal successors, (1837), 11 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,225 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,226 INFO L186 Difference]: Start difference. First operand has 256 places, 216 transitions, 663 flow. Second operand 11 states and 1837 transitions. [2021-10-28 09:58:22,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 238 transitions, 972 flow [2021-10-28 09:58:22,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 238 transitions, 913 flow, removed 19 selfloop flow, removed 10 redundant places. [2021-10-28 09:58:22,242 INFO L242 Difference]: Finished difference. Result has 256 places, 222 transitions, 741 flow [2021-10-28 09:58:22,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=256, PETRI_TRANSITIONS=222} [2021-10-28 09:58:22,246 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 60 predicate places. [2021-10-28 09:58:22,246 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 222 transitions, 741 flow [2021-10-28 09:58:22,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:22,248 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:22,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 09:58:22,248 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2011516422, now seen corresponding path program 5 times [2021-10-28 09:58:22,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:22,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871055521] [2021-10-28 09:58:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:22,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:22,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:22,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871055521] [2021-10-28 09:58:22,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871055521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:22,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:22,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:22,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016791220] [2021-10-28 09:58:22,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:22,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:22,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:22,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:22,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 222 transitions, 741 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:22,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:22,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:22,853 INFO L129 PetriNetUnfolder]: 97/1464 cut-off events. [2021-10-28 09:58:22,854 INFO L130 PetriNetUnfolder]: For 959/1033 co-relation queries the response was YES. [2021-10-28 09:58:22,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 1464 events. 97/1464 cut-off events. For 959/1033 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11046 event pairs, 28 based on Foata normal form. 12/1422 useless extension candidates. Maximal degree in co-relation 2809. Up to 398 conditions per place. [2021-10-28 09:58:22,871 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 49 selfloop transitions, 4 changer transitions 19/236 dead transitions. [2021-10-28 09:58:22,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 236 transitions, 970 flow [2021-10-28 09:58:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:58:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1996 transitions. [2021-10-28 09:58:22,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7425595238095238 [2021-10-28 09:58:22,876 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1996 transitions. [2021-10-28 09:58:22,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1996 transitions. [2021-10-28 09:58:22,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:22,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1996 transitions. [2021-10-28 09:58:22,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 166.33333333333334) internal successors, (1996), 12 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,889 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,890 INFO L186 Difference]: Start difference. First operand has 256 places, 222 transitions, 741 flow. Second operand 12 states and 1996 transitions. [2021-10-28 09:58:22,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 236 transitions, 970 flow [2021-10-28 09:58:22,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 236 transitions, 921 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-10-28 09:58:22,905 INFO L242 Difference]: Finished difference. Result has 263 places, 216 transitions, 675 flow [2021-10-28 09:58:22,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=675, PETRI_PLACES=263, PETRI_TRANSITIONS=216} [2021-10-28 09:58:22,907 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 67 predicate places. [2021-10-28 09:58:22,908 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 216 transitions, 675 flow [2021-10-28 09:58:22,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:22,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:22,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:22,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:58:22,909 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1501791554, now seen corresponding path program 6 times [2021-10-28 09:58:22,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:22,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113932656] [2021-10-28 09:58:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:22,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:23,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:23,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113932656] [2021-10-28 09:58:23,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113932656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:23,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:23,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:23,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444869606] [2021-10-28 09:58:23,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:23,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:23,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 224 [2021-10-28 09:58:23,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 216 transitions, 675 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:23,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 224 [2021-10-28 09:58:23,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:23,445 INFO L129 PetriNetUnfolder]: 88/1356 cut-off events. [2021-10-28 09:58:23,445 INFO L130 PetriNetUnfolder]: For 854/910 co-relation queries the response was YES. [2021-10-28 09:58:23,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 1356 events. 88/1356 cut-off events. For 854/910 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9788 event pairs, 34 based on Foata normal form. 3/1302 useless extension candidates. Maximal degree in co-relation 2506. Up to 359 conditions per place. [2021-10-28 09:58:23,456 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 40 selfloop transitions, 0 changer transitions 32/228 dead transitions. [2021-10-28 09:58:23,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 228 transitions, 874 flow [2021-10-28 09:58:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:58:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1993 transitions. [2021-10-28 09:58:23,463 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7414434523809523 [2021-10-28 09:58:23,463 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1993 transitions. [2021-10-28 09:58:23,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1993 transitions. [2021-10-28 09:58:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1993 transitions. [2021-10-28 09:58:23,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 166.08333333333334) internal successors, (1993), 12 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,474 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,474 INFO L186 Difference]: Start difference. First operand has 263 places, 216 transitions, 675 flow. Second operand 12 states and 1993 transitions. [2021-10-28 09:58:23,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 228 transitions, 874 flow [2021-10-28 09:58:23,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 228 transitions, 810 flow, removed 19 selfloop flow, removed 14 redundant places. [2021-10-28 09:58:23,485 INFO L242 Difference]: Finished difference. Result has 251 places, 196 transitions, 502 flow [2021-10-28 09:58:23,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=502, PETRI_PLACES=251, PETRI_TRANSITIONS=196} [2021-10-28 09:58:23,486 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, 55 predicate places. [2021-10-28 09:58:23,486 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 196 transitions, 502 flow [2021-10-28 09:58:23,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:23,487 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:58:23,487 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1232028139, now seen corresponding path program 1 times [2021-10-28 09:58:23,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:23,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408988693] [2021-10-28 09:58:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:23,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:23,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:23,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408988693] [2021-10-28 09:58:23,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408988693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:23,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:23,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:23,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93576670] [2021-10-28 09:58:23,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:23,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:23,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 224 [2021-10-28 09:58:23,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 196 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:23,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 224 [2021-10-28 09:58:23,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:23,678 INFO L129 PetriNetUnfolder]: 7/284 cut-off events. [2021-10-28 09:58:23,678 INFO L130 PetriNetUnfolder]: For 26/31 co-relation queries the response was YES. [2021-10-28 09:58:23,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 284 events. 7/284 cut-off events. For 26/31 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 721 event pairs, 0 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 435. Up to 64 conditions per place. [2021-10-28 09:58:23,681 INFO L132 encePairwiseOnDemand]: 213/224 looper letters, 29 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2021-10-28 09:58:23,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 170 transitions, 494 flow [2021-10-28 09:58:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:58:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 994 transitions. [2021-10-28 09:58:23,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2021-10-28 09:58:23,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 994 transitions. [2021-10-28 09:58:23,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 994 transitions. [2021-10-28 09:58:23,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:23,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 994 transitions. [2021-10-28 09:58:23,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,691 INFO L186 Difference]: Start difference. First operand has 251 places, 196 transitions, 502 flow. Second operand 6 states and 994 transitions. [2021-10-28 09:58:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 170 transitions, 494 flow [2021-10-28 09:58:23,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 170 transitions, 446 flow, removed 5 selfloop flow, removed 23 redundant places. [2021-10-28 09:58:23,697 INFO L242 Difference]: Finished difference. Result has 191 places, 170 transitions, 388 flow [2021-10-28 09:58:23,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=191, PETRI_TRANSITIONS=170} [2021-10-28 09:58:23,698 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -5 predicate places. [2021-10-28 09:58:23,698 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 170 transitions, 388 flow [2021-10-28 09:58:23,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:23,699 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:23,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:58:23,700 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash 988438649, now seen corresponding path program 1 times [2021-10-28 09:58:23,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:23,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317796072] [2021-10-28 09:58:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:23,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:23,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:23,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317796072] [2021-10-28 09:58:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317796072] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:23,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:23,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:58:23,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665855696] [2021-10-28 09:58:23,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:58:23,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:58:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:58:23,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 224 [2021-10-28 09:58:23,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 170 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:23,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 224 [2021-10-28 09:58:23,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:23,932 INFO L129 PetriNetUnfolder]: 26/239 cut-off events. [2021-10-28 09:58:23,933 INFO L130 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2021-10-28 09:58:23,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 239 events. 26/239 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 546 event pairs, 4 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 353. Up to 32 conditions per place. [2021-10-28 09:58:23,935 INFO L132 encePairwiseOnDemand]: 214/224 looper letters, 15 selfloop transitions, 9 changer transitions 4/149 dead transitions. [2021-10-28 09:58:23,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 149 transitions, 403 flow [2021-10-28 09:58:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:58:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1577 transitions. [2021-10-28 09:58:23,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7822420634920635 [2021-10-28 09:58:23,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1577 transitions. [2021-10-28 09:58:23,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1577 transitions. [2021-10-28 09:58:23,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:23,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1577 transitions. [2021-10-28 09:58:23,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.22222222222223) internal successors, (1577), 9 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,949 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,949 INFO L186 Difference]: Start difference. First operand has 191 places, 170 transitions, 388 flow. Second operand 9 states and 1577 transitions. [2021-10-28 09:58:23,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 149 transitions, 403 flow [2021-10-28 09:58:23,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 149 transitions, 384 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 09:58:23,955 INFO L242 Difference]: Finished difference. Result has 173 places, 144 transitions, 328 flow [2021-10-28 09:58:23,955 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=328, PETRI_PLACES=173, PETRI_TRANSITIONS=144} [2021-10-28 09:58:23,955 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -23 predicate places. [2021-10-28 09:58:23,956 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 144 transitions, 328 flow [2021-10-28 09:58:23,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:23,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:58:23,957 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:23,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 09:58:23,957 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:58:23,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash -159530773, now seen corresponding path program 1 times [2021-10-28 09:58:23,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:23,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090738567] [2021-10-28 09:58:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:23,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:24,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:24,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090738567] [2021-10-28 09:58:24,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090738567] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:24,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:24,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:58:24,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433463335] [2021-10-28 09:58:24,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:58:24,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:58:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:58:24,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 224 [2021-10-28 09:58:24,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 144 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:24,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:58:24,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 224 [2021-10-28 09:58:24,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:58:24,136 INFO L129 PetriNetUnfolder]: 3/109 cut-off events. [2021-10-28 09:58:24,137 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-10-28 09:58:24,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 109 events. 3/109 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 3/112 useless extension candidates. Maximal degree in co-relation 161. Up to 13 conditions per place. [2021-10-28 09:58:24,138 INFO L132 encePairwiseOnDemand]: 214/224 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2021-10-28 09:58:24,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 101 transitions, 289 flow [2021-10-28 09:58:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:58:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1573 transitions. [2021-10-28 09:58:24,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7802579365079365 [2021-10-28 09:58:24,143 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1573 transitions. [2021-10-28 09:58:24,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1573 transitions. [2021-10-28 09:58:24,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:58:24,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1573 transitions. [2021-10-28 09:58:24,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 174.77777777777777) internal successors, (1573), 9 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:24,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:24,152 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:24,152 INFO L186 Difference]: Start difference. First operand has 173 places, 144 transitions, 328 flow. Second operand 9 states and 1573 transitions. [2021-10-28 09:58:24,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 101 transitions, 289 flow [2021-10-28 09:58:24,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 101 transitions, 265 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-10-28 09:58:24,155 INFO L242 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2021-10-28 09:58:24,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2021-10-28 09:58:24,155 INFO L334 CegarLoopForPetriNet]: 196 programPoint places, -69 predicate places. [2021-10-28 09:58:24,155 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2021-10-28 09:58:24,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:24,159 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:24,159 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:58:24,160 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:58:24,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 09:58:24,164 INFO L731 BasicCegarLoop]: Path program histogram: [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:24,169 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:58:24,169 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:58:24,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:58:24 BasicIcfg [2021-10-28 09:58:24,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:58:24,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:58:24,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:58:24,180 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:58:24,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:06" (3/4) ... [2021-10-28 09:58:24,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:58:24,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:58:24,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:58:24,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-28 09:58:24,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:58:24,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:58:24,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:58:24,288 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:58:24,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:58:24,291 INFO L168 Benchmark]: Toolchain (without parser) took 19185.75 ms. Allocated memory was 111.1 MB in the beginning and 323.0 MB in the end (delta: 211.8 MB). Free memory was 78.2 MB in the beginning and 132.2 MB in the end (delta: -54.0 MB). Peak memory consumption was 157.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,291 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:24,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.69 ms. Allocated memory is still 111.1 MB. Free memory was 78.0 MB in the beginning and 83.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.30 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 81.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,293 INFO L168 Benchmark]: Boogie Preprocessor took 63.57 ms. Allocated memory is still 111.1 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,294 INFO L168 Benchmark]: RCFGBuilder took 800.17 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 63.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,294 INFO L168 Benchmark]: TraceAbstraction took 17670.19 ms. Allocated memory was 111.1 MB in the beginning and 323.0 MB in the end (delta: 211.8 MB). Free memory was 63.0 MB in the beginning and 136.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 139.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,295 INFO L168 Benchmark]: Witness Printer took 109.27 ms. Allocated memory is still 323.0 MB. Free memory was 136.4 MB in the beginning and 132.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:24,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.69 ms. Allocated memory is still 111.1 MB. Free memory was 78.0 MB in the beginning and 83.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.30 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 81.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.57 ms. Allocated memory is still 111.1 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 800.17 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 63.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17670.19 ms. Allocated memory was 111.1 MB in the beginning and 323.0 MB in the end (delta: 211.8 MB). Free memory was 63.0 MB in the beginning and 136.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 139.2 MB. Max. memory is 16.1 GB. * Witness Printer took 109.27 ms. Allocated memory is still 323.0 MB. Free memory was 136.4 MB in the beginning and 132.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 105]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 270 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.3s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 771 SDtfs, 1005 SDslu, 2624 SDs, 0 SdLazy, 2330 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=829occurred in iteration=13, InterpolantAutomatonStates: 227, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 2908 NumberOfCodeBlocks, 2908 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2884 ConstructedInterpolants, 0 QuantifiedInterpolants, 6438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:58:24,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3073d1-8f2e-43c6-8d1f-4ca48e6ebc53/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...