./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.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_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD --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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:20:58,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:20:58,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:20:58,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:20:58,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:20:58,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:20:58,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:20:58,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:20:58,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:20:58,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:20:58,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:20:58,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:20:58,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:20:58,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:20:59,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:20:59,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:20:59,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:20:59,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:20:59,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:20:59,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:20:59,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:20:59,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:20:59,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:20:59,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:20:59,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:20:59,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:20:59,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:20:59,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:20:59,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:20:59,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:20:59,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:20:59,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:20:59,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:20:59,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:20:59,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:20:59,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:20:59,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:20:59,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:20:59,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:20:59,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:20:59,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:20:59,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:20:59,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:20:59,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:20:59,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:20:59,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:20:59,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:20:59,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:20:59,106 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:20:59,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:20:59,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:20:59,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:20:59,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:20:59,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:20:59,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:20:59,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:20:59,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:20:59,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:20:59,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:20:59,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:20:59,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:20:59,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:20:59,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:20:59,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:20:59,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:59,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:20:59,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:20:59,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:20:59,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:20:59,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:20:59,111 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:20:59,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:20:59,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:20:59,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:20:59,112 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_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2021-10-28 23:20:59,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:20:59,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:20:59,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:20:59,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:20:59,413 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:20:59,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-28 23:20:59,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/data/ef71f482b/6cb694f1e51e4b468aa29a5f0e532eb9/FLAGb64de24b6 [2021-10-28 23:21:00,052 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:21:00,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-28 23:21:00,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/data/ef71f482b/6cb694f1e51e4b468aa29a5f0e532eb9/FLAGb64de24b6 [2021-10-28 23:21:00,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/data/ef71f482b/6cb694f1e51e4b468aa29a5f0e532eb9 [2021-10-28 23:21:00,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:21:00,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:21:00,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:21:00,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:21:00,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:21:00,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ee7fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00, skipping insertion in model container [2021-10-28 23:21:00,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:21:00,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:21:00,633 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_24370015-987f-4f19-8097-de8c622263dc/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-10-28 23:21:00,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:21:00,647 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:21:00,677 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_24370015-987f-4f19-8097-de8c622263dc/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-10-28 23:21:00,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:21:00,694 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:21:00,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00 WrapperNode [2021-10-28 23:21:00,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:21:00,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:21:00,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:21:00,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:21:00,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:21:00,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:21:00,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:21:00,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:21:00,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:21:00,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:21:00,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:21:00,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:21:00,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (1/1) ... [2021-10-28 23:21:00,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:21:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:21:00,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:21:00,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:21:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 23:21:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 23:21:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 23:21:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 23:21:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 23:21:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 23:21:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-28 23:21:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-28 23:21:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:21:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:21:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:21:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:21:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:21:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:21:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:21:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:21:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:21:00,922 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 23:21:01,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:21:01,575 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 23:21:01,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:01 BoogieIcfgContainer [2021-10-28 23:21:01,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:21:01,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:21:01,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:21:01,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:21:01,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:21:00" (1/3) ... [2021-10-28 23:21:01,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edf860f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:21:01, skipping insertion in model container [2021-10-28 23:21:01,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:00" (2/3) ... [2021-10-28 23:21:01,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edf860f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:21:01, skipping insertion in model container [2021-10-28 23:21:01,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:01" (3/3) ... [2021-10-28 23:21:01,588 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-10-28 23:21:01,595 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:21:01,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:21:01,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:21:01,596 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:21:01,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,636 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,637 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,642 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,643 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,643 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,643 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,643 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,643 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,646 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,647 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,647 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,647 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,648 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,648 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,648 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,648 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,649 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,654 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,654 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,656 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,660 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,660 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,661 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,661 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,661 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,661 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:21:01,679 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-28 23:21:01,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:21:01,754 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 23:21:01,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 23:21:01,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 300 flow [2021-10-28 23:21:01,856 INFO L129 PetriNetUnfolder]: 2/130 cut-off events. [2021-10-28 23:21:01,856 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:21:01,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 2/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2021-10-28 23:21:01,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 300 flow [2021-10-28 23:21:01,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 118 transitions, 260 flow [2021-10-28 23:21:01,914 INFO L129 PetriNetUnfolder]: 2/117 cut-off events. [2021-10-28 23:21:01,914 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:21:01,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:01,915 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] [2021-10-28 23:21:01,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -410649114, now seen corresponding path program 1 times [2021-10-28 23:21:01,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:01,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958117122] [2021-10-28 23:21:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:01,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:03,141 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 23:21:03,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:03,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958117122] [2021-10-28 23:21:03,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958117122] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:03,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:03,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:21:03,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337248539] [2021-10-28 23:21:03,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:21:03,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:21:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:21:03,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-10-28 23:21:03,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 260 flow. Second operand has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 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 23:21:03,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:03,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-10-28 23:21:03,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:03,774 INFO L129 PetriNetUnfolder]: 40/326 cut-off events. [2021-10-28 23:21:03,774 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-10-28 23:21:03,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 326 events. 40/326 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1368 event pairs, 18 based on Foata normal form. 3/312 useless extension candidates. Maximal degree in co-relation 340. Up to 49 conditions per place. [2021-10-28 23:21:03,791 INFO L132 encePairwiseOnDemand]: 117/134 looper letters, 14 selfloop transitions, 13 changer transitions 10/134 dead transitions. [2021-10-28 23:21:03,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 134 transitions, 366 flow [2021-10-28 23:21:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:21:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 23:21:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1385 transitions. [2021-10-28 23:21:03,814 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.861318407960199 [2021-10-28 23:21:03,815 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1385 transitions. [2021-10-28 23:21:03,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1385 transitions. [2021-10-28 23:21:03,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:03,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1385 transitions. [2021-10-28 23:21:03,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 12 states have internal predecessors, (1385), 0 states have call successors, (0), 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 23:21:03,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 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 23:21:03,864 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 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 23:21:03,867 INFO L186 Difference]: Start difference. First operand has 129 places, 118 transitions, 260 flow. Second operand 12 states and 1385 transitions. [2021-10-28 23:21:03,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 134 transitions, 366 flow [2021-10-28 23:21:03,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 350 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-10-28 23:21:03,878 INFO L242 Difference]: Finished difference. Result has 137 places, 121 transitions, 307 flow [2021-10-28 23:21:03,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=307, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2021-10-28 23:21:03,882 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2021-10-28 23:21:03,882 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 307 flow [2021-10-28 23:21:03,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 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 23:21:03,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:03,884 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] [2021-10-28 23:21:03,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:21:03,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:03,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1829404082, now seen corresponding path program 2 times [2021-10-28 23:21:03,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:03,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101136718] [2021-10-28 23:21:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:03,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:04,084 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 23:21:04,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:04,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101136718] [2021-10-28 23:21:04,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101136718] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:04,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:04,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:21:04,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136690892] [2021-10-28 23:21:04,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:04,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:04,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:04,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:21:04,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:04,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:04,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:05,052 INFO L129 PetriNetUnfolder]: 1390/3608 cut-off events. [2021-10-28 23:21:05,052 INFO L130 PetriNetUnfolder]: For 412/512 co-relation queries the response was YES. [2021-10-28 23:21:05,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 3608 events. 1390/3608 cut-off events. For 412/512 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31297 event pairs, 361 based on Foata normal form. 66/3475 useless extension candidates. Maximal degree in co-relation 6780. Up to 707 conditions per place. [2021-10-28 23:21:05,107 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 44 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2021-10-28 23:21:05,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 158 transitions, 513 flow [2021-10-28 23:21:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:21:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:21:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 785 transitions. [2021-10-28 23:21:05,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8368869936034116 [2021-10-28 23:21:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 785 transitions. [2021-10-28 23:21:05,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 785 transitions. [2021-10-28 23:21:05,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:05,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 785 transitions. [2021-10-28 23:21:05,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 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 23:21:05,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 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 23:21:05,120 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 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 23:21:05,120 INFO L186 Difference]: Start difference. First operand has 137 places, 121 transitions, 307 flow. Second operand 7 states and 785 transitions. [2021-10-28 23:21:05,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 158 transitions, 513 flow [2021-10-28 23:21:05,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 158 transitions, 490 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-10-28 23:21:05,129 INFO L242 Difference]: Finished difference. Result has 132 places, 137 transitions, 398 flow [2021-10-28 23:21:05,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=132, PETRI_TRANSITIONS=137} [2021-10-28 23:21:05,130 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2021-10-28 23:21:05,130 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 137 transitions, 398 flow [2021-10-28 23:21:05,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:21:05,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:05,132 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] [2021-10-28 23:21:05,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:21:05,133 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:05,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1616731496, now seen corresponding path program 3 times [2021-10-28 23:21:05,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:05,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647214127] [2021-10-28 23:21:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:05,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:05,372 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 23:21:05,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:05,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647214127] [2021-10-28 23:21:05,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647214127] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:05,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:05,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:21:05,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308320349] [2021-10-28 23:21:05,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:21:05,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:05,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:21:05,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:21:05,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:05,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 137 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 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 23:21:05,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:05,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:05,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:06,212 INFO L129 PetriNetUnfolder]: 1375/3486 cut-off events. [2021-10-28 23:21:06,213 INFO L130 PetriNetUnfolder]: For 2380/5300 co-relation queries the response was YES. [2021-10-28 23:21:06,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8791 conditions, 3486 events. 1375/3486 cut-off events. For 2380/5300 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29488 event pairs, 198 based on Foata normal form. 148/3403 useless extension candidates. Maximal degree in co-relation 8493. Up to 787 conditions per place. [2021-10-28 23:21:06,271 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 46 selfloop transitions, 55 changer transitions 2/198 dead transitions. [2021-10-28 23:21:06,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 198 transitions, 835 flow [2021-10-28 23:21:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:21:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:21:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 900 transitions. [2021-10-28 23:21:06,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8395522388059702 [2021-10-28 23:21:06,280 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 900 transitions. [2021-10-28 23:21:06,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 900 transitions. [2021-10-28 23:21:06,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:06,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 900 transitions. [2021-10-28 23:21:06,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.5) internal successors, (900), 8 states have internal predecessors, (900), 0 states have call successors, (0), 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 23:21:06,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 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 23:21:06,342 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 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 23:21:06,343 INFO L186 Difference]: Start difference. First operand has 132 places, 137 transitions, 398 flow. Second operand 8 states and 900 transitions. [2021-10-28 23:21:06,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 198 transitions, 835 flow [2021-10-28 23:21:06,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 198 transitions, 831 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:21:06,361 INFO L242 Difference]: Finished difference. Result has 140 places, 174 transitions, 774 flow [2021-10-28 23:21:06,361 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=140, PETRI_TRANSITIONS=174} [2021-10-28 23:21:06,362 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 11 predicate places. [2021-10-28 23:21:06,362 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 174 transitions, 774 flow [2021-10-28 23:21:06,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 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 23:21:06,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:06,365 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] [2021-10-28 23:21:06,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:21:06,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:06,367 INFO L85 PathProgramCache]: Analyzing trace with hash 460587904, now seen corresponding path program 4 times [2021-10-28 23:21:06,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:06,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337006232] [2021-10-28 23:21:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:06,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:06,864 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 23:21:06,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:06,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337006232] [2021-10-28 23:21:06,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337006232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:06,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:06,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:21:06,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069047868] [2021-10-28 23:21:06,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:21:06,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:06,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:21:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:06,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-10-28 23:21:06,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 174 transitions, 774 flow. Second operand has 10 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 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 23:21:06,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:06,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-10-28 23:21:06,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:07,598 INFO L129 PetriNetUnfolder]: 769/2911 cut-off events. [2021-10-28 23:21:07,598 INFO L130 PetriNetUnfolder]: For 4571/6869 co-relation queries the response was YES. [2021-10-28 23:21:07,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8132 conditions, 2911 events. 769/2911 cut-off events. For 4571/6869 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28842 event pairs, 91 based on Foata normal form. 103/2875 useless extension candidates. Maximal degree in co-relation 7704. Up to 542 conditions per place. [2021-10-28 23:21:07,645 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 19 selfloop transitions, 15 changer transitions 4/187 dead transitions. [2021-10-28 23:21:07,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 187 transitions, 912 flow [2021-10-28 23:21:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:21:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:21:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1152 transitions. [2021-10-28 23:21:07,651 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8597014925373134 [2021-10-28 23:21:07,651 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1152 transitions. [2021-10-28 23:21:07,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1152 transitions. [2021-10-28 23:21:07,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:07,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1152 transitions. [2021-10-28 23:21:07,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.2) internal successors, (1152), 10 states have internal predecessors, (1152), 0 states have call successors, (0), 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 23:21:07,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:07,661 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:07,662 INFO L186 Difference]: Start difference. First operand has 140 places, 174 transitions, 774 flow. Second operand 10 states and 1152 transitions. [2021-10-28 23:21:07,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 187 transitions, 912 flow [2021-10-28 23:21:07,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 187 transitions, 898 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-10-28 23:21:07,679 INFO L242 Difference]: Finished difference. Result has 152 places, 180 transitions, 856 flow [2021-10-28 23:21:07,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2021-10-28 23:21:07,680 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 23 predicate places. [2021-10-28 23:21:07,680 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 856 flow [2021-10-28 23:21:07,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 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 23:21:07,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:07,682 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] [2021-10-28 23:21:07,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:21:07,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -507858714, now seen corresponding path program 5 times [2021-10-28 23:21:07,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:07,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750983948] [2021-10-28 23:21:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:07,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:07,933 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 23:21:07,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:07,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750983948] [2021-10-28 23:21:07,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750983948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:07,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:21:07,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447445804] [2021-10-28 23:21:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:21:07,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:21:07,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:21:07,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:07,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 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 23:21:07,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:07,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:07,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:09,097 INFO L129 PetriNetUnfolder]: 1713/4389 cut-off events. [2021-10-28 23:21:09,097 INFO L130 PetriNetUnfolder]: For 12461/24190 co-relation queries the response was YES. [2021-10-28 23:21:09,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15636 conditions, 4389 events. 1713/4389 cut-off events. For 12461/24190 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39485 event pairs, 185 based on Foata normal form. 157/4276 useless extension candidates. Maximal degree in co-relation 15607. Up to 964 conditions per place. [2021-10-28 23:21:09,180 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 99 changer transitions 3/246 dead transitions. [2021-10-28 23:21:09,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 246 transitions, 1557 flow [2021-10-28 23:21:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:21:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:21:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1115 transitions. [2021-10-28 23:21:09,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.832089552238806 [2021-10-28 23:21:09,187 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1115 transitions. [2021-10-28 23:21:09,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1115 transitions. [2021-10-28 23:21:09,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:09,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1115 transitions. [2021-10-28 23:21:09,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 0 states have call successors, (0), 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 23:21:09,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:09,198 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:09,198 INFO L186 Difference]: Start difference. First operand has 152 places, 180 transitions, 856 flow. Second operand 10 states and 1115 transitions. [2021-10-28 23:21:09,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 246 transitions, 1557 flow [2021-10-28 23:21:09,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 246 transitions, 1514 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-10-28 23:21:09,220 INFO L242 Difference]: Finished difference. Result has 156 places, 220 transitions, 1442 flow [2021-10-28 23:21:09,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1442, PETRI_PLACES=156, PETRI_TRANSITIONS=220} [2021-10-28 23:21:09,221 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 27 predicate places. [2021-10-28 23:21:09,221 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 220 transitions, 1442 flow [2021-10-28 23:21:09,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 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 23:21:09,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:09,223 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] [2021-10-28 23:21:09,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:21:09,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1746384870, now seen corresponding path program 6 times [2021-10-28 23:21:09,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:09,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247589517] [2021-10-28 23:21:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:09,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:09,370 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 23:21:09,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:09,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247589517] [2021-10-28 23:21:09,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247589517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:09,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:09,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:21:09,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557725518] [2021-10-28 23:21:09,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:21:09,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:21:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:09,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:09,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 220 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 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 23:21:09,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:09,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:09,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:10,706 INFO L129 PetriNetUnfolder]: 1879/4897 cut-off events. [2021-10-28 23:21:10,707 INFO L130 PetriNetUnfolder]: For 23726/42957 co-relation queries the response was YES. [2021-10-28 23:21:10,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20326 conditions, 4897 events. 1879/4897 cut-off events. For 23726/42957 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 45875 event pairs, 193 based on Foata normal form. 336/4961 useless extension candidates. Maximal degree in co-relation 19840. Up to 986 conditions per place. [2021-10-28 23:21:10,791 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 48 selfloop transitions, 113 changer transitions 1/264 dead transitions. [2021-10-28 23:21:10,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 264 transitions, 2066 flow [2021-10-28 23:21:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:21:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:21:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1228 transitions. [2021-10-28 23:21:10,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8331071913161465 [2021-10-28 23:21:10,797 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1228 transitions. [2021-10-28 23:21:10,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1228 transitions. [2021-10-28 23:21:10,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:10,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1228 transitions. [2021-10-28 23:21:10,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.63636363636364) internal successors, (1228), 11 states have internal predecessors, (1228), 0 states have call successors, (0), 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 23:21:10,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 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 23:21:10,809 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 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 23:21:10,809 INFO L186 Difference]: Start difference. First operand has 156 places, 220 transitions, 1442 flow. Second operand 11 states and 1228 transitions. [2021-10-28 23:21:10,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 264 transitions, 2066 flow [2021-10-28 23:21:10,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 264 transitions, 2037 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-10-28 23:21:10,854 INFO L242 Difference]: Finished difference. Result has 165 places, 234 transitions, 1846 flow [2021-10-28 23:21:10,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1846, PETRI_PLACES=165, PETRI_TRANSITIONS=234} [2021-10-28 23:21:10,855 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 36 predicate places. [2021-10-28 23:21:10,855 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 234 transitions, 1846 flow [2021-10-28 23:21:10,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 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 23:21:10,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:10,856 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] [2021-10-28 23:21:10,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:21:10,857 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 484396320, now seen corresponding path program 7 times [2021-10-28 23:21:10,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:10,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77371222] [2021-10-28 23:21:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:10,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:11,008 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 23:21:11,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:11,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77371222] [2021-10-28 23:21:11,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77371222] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:11,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:11,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:21:11,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670757993] [2021-10-28 23:21:11,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:21:11,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:21:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:21:11,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:11,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 234 transitions, 1846 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 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 23:21:11,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:11,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:11,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:12,294 INFO L129 PetriNetUnfolder]: 1866/5048 cut-off events. [2021-10-28 23:21:12,294 INFO L130 PetriNetUnfolder]: For 32291/57670 co-relation queries the response was YES. [2021-10-28 23:21:12,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22362 conditions, 5048 events. 1866/5048 cut-off events. For 32291/57670 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 48354 event pairs, 229 based on Foata normal form. 355/5169 useless extension candidates. Maximal degree in co-relation 21849. Up to 1172 conditions per place. [2021-10-28 23:21:12,388 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 54 selfloop transitions, 108 changer transitions 3/267 dead transitions. [2021-10-28 23:21:12,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 267 transitions, 2451 flow [2021-10-28 23:21:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:21:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:21:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2021-10-28 23:21:12,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8386194029850746 [2021-10-28 23:21:12,393 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 899 transitions. [2021-10-28 23:21:12,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 899 transitions. [2021-10-28 23:21:12,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:12,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 899 transitions. [2021-10-28 23:21:12,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.375) internal successors, (899), 8 states have internal predecessors, (899), 0 states have call successors, (0), 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 23:21:12,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 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 23:21:12,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 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 23:21:12,404 INFO L186 Difference]: Start difference. First operand has 165 places, 234 transitions, 1846 flow. Second operand 8 states and 899 transitions. [2021-10-28 23:21:12,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 267 transitions, 2451 flow [2021-10-28 23:21:12,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 267 transitions, 2337 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 23:21:12,482 INFO L242 Difference]: Finished difference. Result has 168 places, 243 transitions, 2090 flow [2021-10-28 23:21:12,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2090, PETRI_PLACES=168, PETRI_TRANSITIONS=243} [2021-10-28 23:21:12,483 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 39 predicate places. [2021-10-28 23:21:12,483 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 243 transitions, 2090 flow [2021-10-28 23:21:12,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 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 23:21:12,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:12,485 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] [2021-10-28 23:21:12,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:21:12,485 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1362721314, now seen corresponding path program 8 times [2021-10-28 23:21:12,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:12,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250932851] [2021-10-28 23:21:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:12,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:12,601 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 23:21:12,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:12,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250932851] [2021-10-28 23:21:12,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250932851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:12,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:12,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:21:12,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061971612] [2021-10-28 23:21:12,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:12,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:12,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:12,608 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:12,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 243 transitions, 2090 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:21:12,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:12,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:12,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:13,731 INFO L129 PetriNetUnfolder]: 1720/4979 cut-off events. [2021-10-28 23:21:13,732 INFO L130 PetriNetUnfolder]: For 38335/62633 co-relation queries the response was YES. [2021-10-28 23:21:13,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 4979 events. 1720/4979 cut-off events. For 38335/62633 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 49575 event pairs, 348 based on Foata normal form. 288/5047 useless extension candidates. Maximal degree in co-relation 22421. Up to 989 conditions per place. [2021-10-28 23:21:13,820 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 86 selfloop transitions, 83 changer transitions 3/274 dead transitions. [2021-10-28 23:21:13,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 274 transitions, 2773 flow [2021-10-28 23:21:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:21:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:21:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2021-10-28 23:21:13,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8326226012793176 [2021-10-28 23:21:13,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2021-10-28 23:21:13,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2021-10-28 23:21:13,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:13,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2021-10-28 23:21:13,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 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 23:21:13,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 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 23:21:13,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 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 23:21:13,833 INFO L186 Difference]: Start difference. First operand has 168 places, 243 transitions, 2090 flow. Second operand 7 states and 781 transitions. [2021-10-28 23:21:13,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 274 transitions, 2773 flow [2021-10-28 23:21:13,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 274 transitions, 2611 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 23:21:13,900 INFO L242 Difference]: Finished difference. Result has 171 places, 252 transitions, 2316 flow [2021-10-28 23:21:13,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2316, PETRI_PLACES=171, PETRI_TRANSITIONS=252} [2021-10-28 23:21:13,901 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 42 predicate places. [2021-10-28 23:21:13,902 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 252 transitions, 2316 flow [2021-10-28 23:21:13,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:21:13,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:13,903 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] [2021-10-28 23:21:13,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:21:13,903 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1074931672, now seen corresponding path program 9 times [2021-10-28 23:21:13,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:13,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152498615] [2021-10-28 23:21:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:13,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:14,011 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 23:21:14,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:14,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152498615] [2021-10-28 23:21:14,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152498615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:14,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:14,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:21:14,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308204713] [2021-10-28 23:21:14,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:14,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:14,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:14,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 252 transitions, 2316 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:21:14,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:14,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:14,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:14,703 INFO L129 PetriNetUnfolder]: 728/2393 cut-off events. [2021-10-28 23:21:14,704 INFO L130 PetriNetUnfolder]: For 19522/27883 co-relation queries the response was YES. [2021-10-28 23:21:14,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10791 conditions, 2393 events. 728/2393 cut-off events. For 19522/27883 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20268 event pairs, 121 based on Foata normal form. 284/2605 useless extension candidates. Maximal degree in co-relation 10738. Up to 488 conditions per place. [2021-10-28 23:21:14,742 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 81 selfloop transitions, 91 changer transitions 1/267 dead transitions. [2021-10-28 23:21:14,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 267 transitions, 2873 flow [2021-10-28 23:21:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:21:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:21:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2021-10-28 23:21:14,746 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8326226012793176 [2021-10-28 23:21:14,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2021-10-28 23:21:14,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2021-10-28 23:21:14,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:14,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2021-10-28 23:21:14,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 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 23:21:14,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 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 23:21:14,753 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 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 23:21:14,754 INFO L186 Difference]: Start difference. First operand has 171 places, 252 transitions, 2316 flow. Second operand 7 states and 781 transitions. [2021-10-28 23:21:14,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 267 transitions, 2873 flow [2021-10-28 23:21:14,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 267 transitions, 2729 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-28 23:21:14,804 INFO L242 Difference]: Finished difference. Result has 167 places, 252 transitions, 2537 flow [2021-10-28 23:21:14,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2537, PETRI_PLACES=167, PETRI_TRANSITIONS=252} [2021-10-28 23:21:14,805 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 38 predicate places. [2021-10-28 23:21:14,805 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 252 transitions, 2537 flow [2021-10-28 23:21:14,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:21:14,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:14,807 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] [2021-10-28 23:21:14,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:21:14,807 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1383671908, now seen corresponding path program 10 times [2021-10-28 23:21:14,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:14,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041835574] [2021-10-28 23:21:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:14,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:14,980 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 23:21:14,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:14,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041835574] [2021-10-28 23:21:14,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041835574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:14,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:14,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:21:14,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476438410] [2021-10-28 23:21:14,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:21:14,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:14,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:21:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:21:14,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:14,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 252 transitions, 2537 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 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 23:21:14,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:14,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:14,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:15,765 INFO L129 PetriNetUnfolder]: 661/2307 cut-off events. [2021-10-28 23:21:15,766 INFO L130 PetriNetUnfolder]: For 18791/29337 co-relation queries the response was YES. [2021-10-28 23:21:15,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 2307 events. 661/2307 cut-off events. For 18791/29337 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19664 event pairs, 60 based on Foata normal form. 391/2613 useless extension candidates. Maximal degree in co-relation 10129. Up to 478 conditions per place. [2021-10-28 23:21:15,810 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 65 selfloop transitions, 132 changer transitions 9/300 dead transitions. [2021-10-28 23:21:15,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 300 transitions, 3448 flow [2021-10-28 23:21:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:21:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:21:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1124 transitions. [2021-10-28 23:21:15,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8388059701492537 [2021-10-28 23:21:15,817 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1124 transitions. [2021-10-28 23:21:15,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1124 transitions. [2021-10-28 23:21:15,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:15,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1124 transitions. [2021-10-28 23:21:15,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.4) internal successors, (1124), 10 states have internal predecessors, (1124), 0 states have call successors, (0), 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 23:21:15,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:15,831 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:15,831 INFO L186 Difference]: Start difference. First operand has 167 places, 252 transitions, 2537 flow. Second operand 10 states and 1124 transitions. [2021-10-28 23:21:15,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 300 transitions, 3448 flow [2021-10-28 23:21:15,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 300 transitions, 3285 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-10-28 23:21:15,878 INFO L242 Difference]: Finished difference. Result has 173 places, 259 transitions, 2808 flow [2021-10-28 23:21:15,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2808, PETRI_PLACES=173, PETRI_TRANSITIONS=259} [2021-10-28 23:21:15,880 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 44 predicate places. [2021-10-28 23:21:15,880 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 259 transitions, 2808 flow [2021-10-28 23:21:15,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 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 23:21:15,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:15,881 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] [2021-10-28 23:21:15,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:21:15,882 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 761347908, now seen corresponding path program 11 times [2021-10-28 23:21:15,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:15,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216050089] [2021-10-28 23:21:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:15,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:16,094 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 23:21:16,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:16,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216050089] [2021-10-28 23:21:16,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216050089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:16,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:16,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:21:16,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486429189] [2021-10-28 23:21:16,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:21:16,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:21:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:21:16,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:16,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 259 transitions, 2808 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 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 23:21:16,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:16,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:16,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:16,721 INFO L129 PetriNetUnfolder]: 427/1655 cut-off events. [2021-10-28 23:21:16,722 INFO L130 PetriNetUnfolder]: For 15031/26154 co-relation queries the response was YES. [2021-10-28 23:21:16,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8341 conditions, 1655 events. 427/1655 cut-off events. For 15031/26154 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13247 event pairs, 26 based on Foata normal form. 378/1976 useless extension candidates. Maximal degree in co-relation 8031. Up to 385 conditions per place. [2021-10-28 23:21:16,746 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 61 selfloop transitions, 124 changer transitions 27/306 dead transitions. [2021-10-28 23:21:16,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 306 transitions, 3807 flow [2021-10-28 23:21:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:21:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:21:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1122 transitions. [2021-10-28 23:21:16,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373134328358209 [2021-10-28 23:21:16,754 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1122 transitions. [2021-10-28 23:21:16,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1122 transitions. [2021-10-28 23:21:16,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:16,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1122 transitions. [2021-10-28 23:21:16,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.2) internal successors, (1122), 10 states have internal predecessors, (1122), 0 states have call successors, (0), 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 23:21:16,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:16,768 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 23:21:16,768 INFO L186 Difference]: Start difference. First operand has 173 places, 259 transitions, 2808 flow. Second operand 10 states and 1122 transitions. [2021-10-28 23:21:16,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 306 transitions, 3807 flow [2021-10-28 23:21:16,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 306 transitions, 3414 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-10-28 23:21:16,814 INFO L242 Difference]: Finished difference. Result has 176 places, 250 transitions, 2642 flow [2021-10-28 23:21:16,815 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2642, PETRI_PLACES=176, PETRI_TRANSITIONS=250} [2021-10-28 23:21:16,815 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 47 predicate places. [2021-10-28 23:21:16,815 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 250 transitions, 2642 flow [2021-10-28 23:21:16,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 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 23:21:16,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:16,817 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] [2021-10-28 23:21:16,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:21:16,817 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1529713992, now seen corresponding path program 12 times [2021-10-28 23:21:16,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:16,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988451523] [2021-10-28 23:21:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:16,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:16,963 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 23:21:16,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:16,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988451523] [2021-10-28 23:21:16,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988451523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:16,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:16,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:21:16,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966900059] [2021-10-28 23:21:16,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:21:16,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:21:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:16,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:16,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 250 transitions, 2642 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 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 23:21:16,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:16,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:16,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:17,491 INFO L129 PetriNetUnfolder]: 346/1481 cut-off events. [2021-10-28 23:21:17,491 INFO L130 PetriNetUnfolder]: For 12056/18003 co-relation queries the response was YES. [2021-10-28 23:21:17,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1481 events. 346/1481 cut-off events. For 12056/18003 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11857 event pairs, 26 based on Foata normal form. 210/1646 useless extension candidates. Maximal degree in co-relation 6835. Up to 322 conditions per place. [2021-10-28 23:21:17,508 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 45 selfloop transitions, 125 changer transitions 27/291 dead transitions. [2021-10-28 23:21:17,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 291 transitions, 3459 flow [2021-10-28 23:21:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:21:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:21:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1223 transitions. [2021-10-28 23:21:17,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8297150610583447 [2021-10-28 23:21:17,512 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1223 transitions. [2021-10-28 23:21:17,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1223 transitions. [2021-10-28 23:21:17,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:17,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1223 transitions. [2021-10-28 23:21:17,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.18181818181819) internal successors, (1223), 11 states have internal predecessors, (1223), 0 states have call successors, (0), 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 23:21:17,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 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 23:21:17,540 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 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 23:21:17,540 INFO L186 Difference]: Start difference. First operand has 176 places, 250 transitions, 2642 flow. Second operand 11 states and 1223 transitions. [2021-10-28 23:21:17,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 291 transitions, 3459 flow [2021-10-28 23:21:17,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 291 transitions, 3337 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 23:21:17,585 INFO L242 Difference]: Finished difference. Result has 182 places, 238 transitions, 2565 flow [2021-10-28 23:21:17,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=182, PETRI_TRANSITIONS=238} [2021-10-28 23:21:17,586 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 53 predicate places. [2021-10-28 23:21:17,587 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 238 transitions, 2565 flow [2021-10-28 23:21:17,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 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 23:21:17,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:17,588 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] [2021-10-28 23:21:17,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:21:17,588 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:17,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash 878348, now seen corresponding path program 13 times [2021-10-28 23:21:17,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:17,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745576746] [2021-10-28 23:21:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:17,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:17,815 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 23:21:17,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:17,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745576746] [2021-10-28 23:21:17,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745576746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:17,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:17,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:21:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490191841] [2021-10-28 23:21:17,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:21:17,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:21:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:21:17,819 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2021-10-28 23:21:17,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 238 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 97.18181818181819) internal successors, (1069), 11 states have internal predecessors, (1069), 0 states have call successors, (0), 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 23:21:17,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:17,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2021-10-28 23:21:17,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:18,688 INFO L129 PetriNetUnfolder]: 573/1903 cut-off events. [2021-10-28 23:21:18,689 INFO L130 PetriNetUnfolder]: For 17111/26718 co-relation queries the response was YES. [2021-10-28 23:21:18,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1903 events. 573/1903 cut-off events. For 17111/26718 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14816 event pairs, 109 based on Foata normal form. 59/1929 useless extension candidates. Maximal degree in co-relation 9847. Up to 446 conditions per place. [2021-10-28 23:21:18,716 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 143 selfloop transitions, 112 changer transitions 34/368 dead transitions. [2021-10-28 23:21:18,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 368 transitions, 4484 flow [2021-10-28 23:21:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:21:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:21:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1466 transitions. [2021-10-28 23:21:18,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7814498933901919 [2021-10-28 23:21:18,723 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1466 transitions. [2021-10-28 23:21:18,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1466 transitions. [2021-10-28 23:21:18,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:18,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1466 transitions. [2021-10-28 23:21:18,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.71428571428571) internal successors, (1466), 14 states have internal predecessors, (1466), 0 states have call successors, (0), 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 23:21:18,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:18,735 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:18,735 INFO L186 Difference]: Start difference. First operand has 182 places, 238 transitions, 2565 flow. Second operand 14 states and 1466 transitions. [2021-10-28 23:21:18,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 368 transitions, 4484 flow [2021-10-28 23:21:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 368 transitions, 4248 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-10-28 23:21:18,814 INFO L242 Difference]: Finished difference. Result has 193 places, 260 transitions, 3190 flow [2021-10-28 23:21:18,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3190, PETRI_PLACES=193, PETRI_TRANSITIONS=260} [2021-10-28 23:21:18,815 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 64 predicate places. [2021-10-28 23:21:18,815 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 260 transitions, 3190 flow [2021-10-28 23:21:18,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.18181818181819) internal successors, (1069), 11 states have internal predecessors, (1069), 0 states have call successors, (0), 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 23:21:18,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:18,816 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] [2021-10-28 23:21:18,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:21:18,817 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash -871472488, now seen corresponding path program 14 times [2021-10-28 23:21:18,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:18,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769405749] [2021-10-28 23:21:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:18,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:18,970 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 23:21:18,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:18,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769405749] [2021-10-28 23:21:18,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769405749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:18,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:18,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:21:18,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884178195] [2021-10-28 23:21:18,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:21:18,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:21:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:21:18,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:18,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 260 transitions, 3190 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 23:21:18,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:18,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:18,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:19,608 INFO L129 PetriNetUnfolder]: 299/1417 cut-off events. [2021-10-28 23:21:19,608 INFO L130 PetriNetUnfolder]: For 16594/22016 co-relation queries the response was YES. [2021-10-28 23:21:19,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 1417 events. 299/1417 cut-off events. For 16594/22016 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11575 event pairs, 32 based on Foata normal form. 227/1601 useless extension candidates. Maximal degree in co-relation 6892. Up to 270 conditions per place. [2021-10-28 23:21:19,624 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 139 changer transitions 34/309 dead transitions. [2021-10-28 23:21:19,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 309 transitions, 4164 flow [2021-10-28 23:21:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:21:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:21:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1548 transitions. [2021-10-28 23:21:19,629 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8251599147121536 [2021-10-28 23:21:19,629 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1548 transitions. [2021-10-28 23:21:19,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1548 transitions. [2021-10-28 23:21:19,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:19,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1548 transitions. [2021-10-28 23:21:19,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.57142857142857) internal successors, (1548), 14 states have internal predecessors, (1548), 0 states have call successors, (0), 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 23:21:19,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:19,640 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:19,640 INFO L186 Difference]: Start difference. First operand has 193 places, 260 transitions, 3190 flow. Second operand 14 states and 1548 transitions. [2021-10-28 23:21:19,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 309 transitions, 4164 flow [2021-10-28 23:21:19,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 309 transitions, 4095 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-10-28 23:21:19,705 INFO L242 Difference]: Finished difference. Result has 202 places, 252 transitions, 3261 flow [2021-10-28 23:21:19,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3261, PETRI_PLACES=202, PETRI_TRANSITIONS=252} [2021-10-28 23:21:19,707 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 73 predicate places. [2021-10-28 23:21:19,707 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 252 transitions, 3261 flow [2021-10-28 23:21:19,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 23:21:19,708 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:19,708 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] [2021-10-28 23:21:19,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:21:19,708 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash -745961090, now seen corresponding path program 15 times [2021-10-28 23:21:19,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:19,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718784438] [2021-10-28 23:21:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:19,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:19,869 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 23:21:19,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:19,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718784438] [2021-10-28 23:21:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718784438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:19,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:19,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:21:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945208688] [2021-10-28 23:21:19,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:21:19,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:21:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:21:19,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:19,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 252 transitions, 3261 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 23:21:19,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:19,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:19,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:20,468 INFO L129 PetriNetUnfolder]: 267/1330 cut-off events. [2021-10-28 23:21:20,468 INFO L130 PetriNetUnfolder]: For 17828/23128 co-relation queries the response was YES. [2021-10-28 23:21:20,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1330 events. 267/1330 cut-off events. For 17828/23128 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10862 event pairs, 29 based on Foata normal form. 242/1534 useless extension candidates. Maximal degree in co-relation 6792. Up to 245 conditions per place. [2021-10-28 23:21:20,484 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 45 selfloop transitions, 139 changer transitions 21/298 dead transitions. [2021-10-28 23:21:20,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 298 transitions, 4209 flow [2021-10-28 23:21:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:21:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:21:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1546 transitions. [2021-10-28 23:21:20,489 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.82409381663113 [2021-10-28 23:21:20,490 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1546 transitions. [2021-10-28 23:21:20,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1546 transitions. [2021-10-28 23:21:20,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:20,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1546 transitions. [2021-10-28 23:21:20,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.42857142857143) internal successors, (1546), 14 states have internal predecessors, (1546), 0 states have call successors, (0), 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 23:21:20,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:20,502 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:20,502 INFO L186 Difference]: Start difference. First operand has 202 places, 252 transitions, 3261 flow. Second operand 14 states and 1546 transitions. [2021-10-28 23:21:20,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 298 transitions, 4209 flow [2021-10-28 23:21:20,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 298 transitions, 3889 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-10-28 23:21:20,572 INFO L242 Difference]: Finished difference. Result has 203 places, 249 transitions, 3206 flow [2021-10-28 23:21:20,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3206, PETRI_PLACES=203, PETRI_TRANSITIONS=249} [2021-10-28 23:21:20,573 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 74 predicate places. [2021-10-28 23:21:20,573 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 249 transitions, 3206 flow [2021-10-28 23:21:20,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 23:21:20,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:21:20,574 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] [2021-10-28 23:21:20,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:21:20,575 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:21:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2086497558, now seen corresponding path program 16 times [2021-10-28 23:21:20,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:20,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85744273] [2021-10-28 23:21:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:20,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:20,716 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 23:21:20,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:20,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85744273] [2021-10-28 23:21:20,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85744273] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:20,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:20,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:21:20,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618359568] [2021-10-28 23:21:20,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:21:20,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:21:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:21:20,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-10-28 23:21:20,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 249 transitions, 3206 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 23:21:20,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:21:20,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-10-28 23:21:20,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:21:20,990 INFO L129 PetriNetUnfolder]: 52/341 cut-off events. [2021-10-28 23:21:20,990 INFO L130 PetriNetUnfolder]: For 4876/5783 co-relation queries the response was YES. [2021-10-28 23:21:20,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 341 events. 52/341 cut-off events. For 4876/5783 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1841 event pairs, 0 based on Foata normal form. 133/470 useless extension candidates. Maximal degree in co-relation 2098. Up to 85 conditions per place. [2021-10-28 23:21:20,996 INFO L132 encePairwiseOnDemand]: 124/134 looper letters, 0 selfloop transitions, 0 changer transitions 169/169 dead transitions. [2021-10-28 23:21:20,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 2181 flow [2021-10-28 23:21:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:21:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:21:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1506 transitions. [2021-10-28 23:21:21,005 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.802771855010661 [2021-10-28 23:21:21,005 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1506 transitions. [2021-10-28 23:21:21,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1506 transitions. [2021-10-28 23:21:21,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:21:21,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1506 transitions. [2021-10-28 23:21:21,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.57142857142857) internal successors, (1506), 14 states have internal predecessors, (1506), 0 states have call successors, (0), 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 23:21:21,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:21,020 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 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 23:21:21,021 INFO L186 Difference]: Start difference. First operand has 203 places, 249 transitions, 3206 flow. Second operand 14 states and 1506 transitions. [2021-10-28 23:21:21,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 2181 flow [2021-10-28 23:21:21,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 2000 flow, removed 17 selfloop flow, removed 15 redundant places. [2021-10-28 23:21:21,060 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2021-10-28 23:21:21,061 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2021-10-28 23:21:21,061 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 45 predicate places. [2021-10-28 23:21:21,061 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2021-10-28 23:21:21,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 23:21:21,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:21:21,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:21:21,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:21:21,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:21:21,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-28 23:21:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:21:21,073 INFO L731 BasicCegarLoop]: Path program histogram: [16] [2021-10-28 23:21:21,077 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:21:21,077 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:21:21,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:21:21 BasicIcfg [2021-10-28 23:21:21,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:21:21,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:21:21,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:21:21,090 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:21:21,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:01" (3/4) ... [2021-10-28 23:21:21,095 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:21:21,103 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 23:21:21,103 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 23:21:21,103 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 23:21:21,104 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-28 23:21:21,114 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-28 23:21:21,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:21:21,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:21:21,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:21:21,172 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:21:21,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:21:21,174 INFO L168 Benchmark]: Toolchain (without parser) took 20759.14 ms. Allocated memory was 98.6 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 61.7 MB in the beginning and 670.4 MB in the end (delta: -608.7 MB). Peak memory consumption was 837.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,175 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:21:21,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.68 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 50.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.67 ms. Allocated memory is still 98.6 MB. Free memory was 50.6 MB in the beginning and 48.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,177 INFO L168 Benchmark]: Boogie Preprocessor took 38.85 ms. Allocated memory is still 98.6 MB. Free memory was 48.6 MB in the beginning and 47.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,177 INFO L168 Benchmark]: RCFGBuilder took 786.86 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 47.1 MB in the beginning and 97.2 MB in the end (delta: -50.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,178 INFO L168 Benchmark]: TraceAbstraction took 19507.67 ms. Allocated memory was 132.1 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 96.5 MB in the beginning and 674.6 MB in the end (delta: -578.0 MB). Peak memory consumption was 832.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,178 INFO L168 Benchmark]: Witness Printer took 83.89 ms. Allocated memory is still 1.5 GB. Free memory was 674.6 MB in the beginning and 670.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:21,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.68 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 50.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.67 ms. Allocated memory is still 98.6 MB. Free memory was 50.6 MB in the beginning and 48.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.85 ms. Allocated memory is still 98.6 MB. Free memory was 48.6 MB in the beginning and 47.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 786.86 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 47.1 MB in the beginning and 97.2 MB in the end (delta: -50.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19507.67 ms. Allocated memory was 132.1 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 96.5 MB in the beginning and 674.6 MB in the end (delta: -578.0 MB). Peak memory consumption was 832.6 MB. Max. memory is 16.1 GB. * Witness Printer took 83.89 ms. Allocated memory is still 1.5 GB. Free memory was 674.6 MB in the beginning and 670.4 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: 146]: 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 9 procedures, 166 locations, 5 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: 19.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 541 SDslu, 566 SDs, 0 SdLazy, 2825 SolverSat, 573 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3261occurred in iteration=14, InterpolantAutomatonStates: 167, 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: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1824 NumberOfCodeBlocks, 1824 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1808 ConstructedInterpolants, 0 QuantifiedInterpolants, 4966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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 23:21:21,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24370015-987f-4f19-8097-de8c622263dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...