./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8 --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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:27:49,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:49,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:49,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:49,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:49,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:49,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:49,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:49,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:49,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:49,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:49,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:49,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:49,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:49,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:49,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:49,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:49,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:49,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:49,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:49,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:49,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:49,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:49,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:49,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:49,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:49,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:49,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:49,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:49,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:49,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:49,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:49,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:49,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:49,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:49,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:49,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:49,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:49,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:49,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:49,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:49,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:27:49,749 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:49,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:49,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:49,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:49,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:49,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:49,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:49,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:49,753 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:49,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:49,754 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:49,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:49,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:49,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:49,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:27:49,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:49,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:27:49,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:49,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:27:49,756 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:49,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:27:49,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:49,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:49,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:49,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:49,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:49,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:49,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:27:49,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:27:49,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:27:49,759 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:27:49,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:27:49,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:27:49,760 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_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-11-16 12:27:50,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:50,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:50,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:50,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:50,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:50,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-16 12:27:50,184 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/data/7e71f25ef/2fb0cfe0eeb34baead87bda6887090c8/FLAG3a79952c3 [2022-11-16 12:27:50,861 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:50,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-16 12:27:50,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/data/7e71f25ef/2fb0cfe0eeb34baead87bda6887090c8/FLAG3a79952c3 [2022-11-16 12:27:51,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/data/7e71f25ef/2fb0cfe0eeb34baead87bda6887090c8 [2022-11-16 12:27:51,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:51,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:51,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:51,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:51,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:51,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:51" (1/1) ... [2022-11-16 12:27:51,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173ce75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:51, skipping insertion in model container [2022-11-16 12:27:51,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:51" (1/1) ... [2022-11-16 12:27:51,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:51,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:51,440 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:27:52,049 WARN L229 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_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-16 12:27:52,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:52,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:27:52,134 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:27:52,187 WARN L229 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_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-16 12:27:52,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:52,323 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:27:52,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52 WrapperNode [2022-11-16 12:27:52,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:52,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:52,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:27:52,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:27:52,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,400 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2022-11-16 12:27:52,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:52,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:27:52,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:27:52,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:27:52,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:27:52,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:27:52,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:27:52,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:27:52,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:52,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:27:52,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffabe6-3682-4a3f-92ee-3a31f9ee750f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:27:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:27:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:27:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:27:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:27:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:27:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:27:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:27:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:27:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-16 12:27:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-16 12:27:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:27:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:27:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:27:52,566 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:27:52,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:27:52,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:27:53,324 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:27:53,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:27:53,346 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:27:53,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:53 BoogieIcfgContainer [2022-11-16 12:27:53,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:27:53,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:27:53,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:27:53,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:27:53,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:51" (1/3) ... [2022-11-16 12:27:53,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20141fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:53, skipping insertion in model container [2022-11-16 12:27:53,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52" (2/3) ... [2022-11-16 12:27:53,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20141fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:53, skipping insertion in model container [2022-11-16 12:27:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:53" (3/3) ... [2022-11-16 12:27:53,363 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-11-16 12:27:53,373 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:27:53,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:27:53,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:27:53,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:27:53,466 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:27:53,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2022-11-16 12:27:53,690 INFO L130 PetriNetUnfolder]: 8/208 cut-off events. [2022-11-16 12:27:53,695 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:27:53,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2022-11-16 12:27:53,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2022-11-16 12:27:53,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2022-11-16 12:27:53,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:53,737 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76167ba7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:53,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 12:27:53,764 INFO L130 PetriNetUnfolder]: 0/104 cut-off events. [2022-11-16 12:27:53,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:53,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:53,765 INFO L209 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] [2022-11-16 12:27:53,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:27:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2022-11-16 12:27:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182419143] [2022-11-16 12:27:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182419143] [2022-11-16 12:27:54,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182419143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:54,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:54,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:27:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832994211] [2022-11-16 12:27:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:55,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:27:55,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-11-16 12:27:55,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:55,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:55,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-11-16 12:27:55,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:56,173 INFO L130 PetriNetUnfolder]: 832/1897 cut-off events. [2022-11-16 12:27:56,174 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 12:27:56,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1897 events. 832/1897 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11874 event pairs, 187 based on Foata normal form. 17/1861 useless extension candidates. Maximal degree in co-relation 3159. Up to 598 conditions per place. [2022-11-16 12:27:56,191 INFO L137 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2022-11-16 12:27:56,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2022-11-16 12:27:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:27:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:27:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2022-11-16 12:27:56,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2022-11-16 12:27:56,222 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2022-11-16 12:27:56,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2022-11-16 12:27:56,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:56,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2022-11-16 12:27:56,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.5) internal successors, (1547), 14 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,256 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,259 INFO L175 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2022-11-16 12:27:56,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2022-11-16 12:27:56,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:56,275 INFO L231 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2022-11-16 12:27:56,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=580, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2022-11-16 12:27:56,283 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-11-16 12:27:56,283 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2022-11-16 12:27:56,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:56,285 INFO L209 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] [2022-11-16 12:27:56,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:27:56,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:27:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2022-11-16 12:27:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:56,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500954102] [2022-11-16 12:27:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:56,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:56,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500954102] [2022-11-16 12:27:56,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500954102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:56,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:56,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:27:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68364103] [2022-11-16 12:27:56,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:56,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:27:56,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-11-16 12:27:56,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:56,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-11-16 12:27:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:57,656 INFO L130 PetriNetUnfolder]: 1086/2489 cut-off events. [2022-11-16 12:27:57,657 INFO L131 PetriNetUnfolder]: For 10527/10625 co-relation queries the response was YES. [2022-11-16 12:27:57,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8859 conditions, 2489 events. 1086/2489 cut-off events. For 10527/10625 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17120 event pairs, 249 based on Foata normal form. 47/2500 useless extension candidates. Maximal degree in co-relation 7868. Up to 841 conditions per place. [2022-11-16 12:27:57,681 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2022-11-16 12:27:57,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2022-11-16 12:27:57,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:27:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:27:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2022-11-16 12:27:57,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2022-11-16 12:27:57,686 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2022-11-16 12:27:57,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2022-11-16 12:27:57,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:57,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2022-11-16 12:27:57,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.36363636363636) internal successors, (1225), 11 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,696 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,696 INFO L175 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2022-11-16 12:27:57,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2022-11-16 12:27:57,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:57,715 INFO L231 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2022-11-16 12:27:57,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-11-16 12:27:57,717 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2022-11-16 12:27:57,717 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2022-11-16 12:27:57,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:57,718 INFO L209 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] [2022-11-16 12:27:57,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:27:57,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:27:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:57,720 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2022-11-16 12:27:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:57,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105048408] [2022-11-16 12:27:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105048408] [2022-11-16 12:27:57,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105048408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:57,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:57,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:27:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770130414] [2022-11-16 12:27:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:27:57,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2022-11-16 12:27:57,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:57,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2022-11-16 12:27:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:58,030 INFO L130 PetriNetUnfolder]: 50/290 cut-off events. [2022-11-16 12:27:58,030 INFO L131 PetriNetUnfolder]: For 1055/1175 co-relation queries the response was YES. [2022-11-16 12:27:58,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 290 events. 50/290 cut-off events. For 1055/1175 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1093 event pairs, 15 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 716. Up to 31 conditions per place. [2022-11-16 12:27:58,033 INFO L137 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-11-16 12:27:58,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2022-11-16 12:27:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2022-11-16 12:27:58,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2022-11-16 12:27:58,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2022-11-16 12:27:58,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2022-11-16 12:27:58,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:58,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2022-11-16 12:27:58,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,048 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,048 INFO L175 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2022-11-16 12:27:58,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2022-11-16 12:27:58,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-11-16 12:27:58,056 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2022-11-16 12:27:58,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2022-11-16 12:27:58,059 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2022-11-16 12:27:58,059 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2022-11-16 12:27:58,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:58,060 INFO L209 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] [2022-11-16 12:27:58,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:27:58,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:27:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1541405648, now seen corresponding path program 1 times [2022-11-16 12:27:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415838754] [2022-11-16 12:27:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415838754] [2022-11-16 12:28:02,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415838754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:02,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:02,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:28:02,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731654425] [2022-11-16 12:28:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:28:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:28:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:28:02,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:28:02,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:02,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:28:02,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:11,000 INFO L130 PetriNetUnfolder]: 1063/2314 cut-off events. [2022-11-16 12:28:11,000 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-11-16 12:28:11,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2314 events. 1063/2314 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13798 event pairs, 49 based on Foata normal form. 0/2274 useless extension candidates. Maximal degree in co-relation 4674. Up to 402 conditions per place. [2022-11-16 12:28:11,016 INFO L137 encePairwiseOnDemand]: 133/163 looper letters, 226 selfloop transitions, 57 changer transitions 0/338 dead transitions. [2022-11-16 12:28:11,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 338 transitions, 1347 flow [2022-11-16 12:28:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:28:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 12:28:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3134 transitions. [2022-11-16 12:28:11,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5196484828386669 [2022-11-16 12:28:11,025 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3134 transitions. [2022-11-16 12:28:11,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3134 transitions. [2022-11-16 12:28:11,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:11,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3134 transitions. [2022-11-16 12:28:11,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.70270270270271) internal successors, (3134), 37 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,052 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,052 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 37 states and 3134 transitions. [2022-11-16 12:28:11,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 338 transitions, 1347 flow [2022-11-16 12:28:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 338 transitions, 1340 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:11,063 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 620 flow [2022-11-16 12:28:11,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=620, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-11-16 12:28:11,065 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 27 predicate places. [2022-11-16 12:28:11,070 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 620 flow [2022-11-16 12:28:11,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:11,071 INFO L209 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] [2022-11-16 12:28:11,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:28:11,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:11,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1708419984, now seen corresponding path program 2 times [2022-11-16 12:28:11,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:11,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495733444] [2022-11-16 12:28:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495733444] [2022-11-16 12:28:12,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495733444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:12,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:12,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:28:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178368532] [2022-11-16 12:28:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:28:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:28:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:12,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:28:12,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 163 transitions, 620 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:12,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:28:12,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:14,734 INFO L130 PetriNetUnfolder]: 820/2254 cut-off events. [2022-11-16 12:28:14,734 INFO L131 PetriNetUnfolder]: For 2433/2531 co-relation queries the response was YES. [2022-11-16 12:28:14,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 2254 events. 820/2254 cut-off events. For 2433/2531 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16201 event pairs, 167 based on Foata normal form. 5/2157 useless extension candidates. Maximal degree in co-relation 5918. Up to 561 conditions per place. [2022-11-16 12:28:14,760 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 171 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2022-11-16 12:28:14,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 286 transitions, 1638 flow [2022-11-16 12:28:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-11-16 12:28:14,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-11-16 12:28:14,766 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-11-16 12:28:14,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-11-16 12:28:14,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:14,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-11-16 12:28:14,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:14,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:14,778 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:14,779 INFO L175 Difference]: Start difference. First operand has 178 places, 163 transitions, 620 flow. Second operand 21 states and 1877 transitions. [2022-11-16 12:28:14,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 286 transitions, 1638 flow [2022-11-16 12:28:14,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 286 transitions, 1601 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-16 12:28:14,798 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 916 flow [2022-11-16 12:28:14,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-11-16 12:28:14,800 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-11-16 12:28:14,801 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 916 flow [2022-11-16 12:28:14,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:14,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:14,802 INFO L209 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] [2022-11-16 12:28:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:28:14,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash 648824556, now seen corresponding path program 3 times [2022-11-16 12:28:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:14,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009287310] [2022-11-16 12:28:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:16,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009287310] [2022-11-16 12:28:16,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009287310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:16,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:16,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:28:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132359356] [2022-11-16 12:28:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:28:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:28:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:16,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:28:16,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 916 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:16,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:16,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:28:16,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:18,580 INFO L130 PetriNetUnfolder]: 1142/3253 cut-off events. [2022-11-16 12:28:18,580 INFO L131 PetriNetUnfolder]: For 4852/4957 co-relation queries the response was YES. [2022-11-16 12:28:18,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 3253 events. 1142/3253 cut-off events. For 4852/4957 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 26327 event pairs, 362 based on Foata normal form. 5/3122 useless extension candidates. Maximal degree in co-relation 8993. Up to 1140 conditions per place. [2022-11-16 12:28:18,615 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 187 selfloop transitions, 51 changer transitions 0/310 dead transitions. [2022-11-16 12:28:18,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 310 transitions, 2061 flow [2022-11-16 12:28:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-11-16 12:28:18,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-11-16 12:28:18,625 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-11-16 12:28:18,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-11-16 12:28:18,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:18,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-11-16 12:28:18,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,641 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,641 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 916 flow. Second operand 21 states and 1877 transitions. [2022-11-16 12:28:18,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 310 transitions, 2061 flow [2022-11-16 12:28:18,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 310 transitions, 2033 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-16 12:28:18,672 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 1304 flow [2022-11-16 12:28:18,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1304, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-11-16 12:28:18,675 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 71 predicate places. [2022-11-16 12:28:18,676 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 1304 flow [2022-11-16 12:28:18,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:18,677 INFO L209 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] [2022-11-16 12:28:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:28:18,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 183204884, now seen corresponding path program 4 times [2022-11-16 12:28:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:18,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406231540] [2022-11-16 12:28:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406231540] [2022-11-16 12:28:20,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406231540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:20,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:20,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:28:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884442763] [2022-11-16 12:28:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:28:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:28:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:20,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:28:20,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 1304 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:20,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:20,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:28:20,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:22,373 INFO L130 PetriNetUnfolder]: 1180/3433 cut-off events. [2022-11-16 12:28:22,374 INFO L131 PetriNetUnfolder]: For 8261/8384 co-relation queries the response was YES. [2022-11-16 12:28:22,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 3433 events. 1180/3433 cut-off events. For 8261/8384 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 28006 event pairs, 561 based on Foata normal form. 8/3294 useless extension candidates. Maximal degree in co-relation 10101. Up to 1535 conditions per place. [2022-11-16 12:28:22,400 INFO L137 encePairwiseOnDemand]: 142/163 looper letters, 180 selfloop transitions, 54 changer transitions 0/306 dead transitions. [2022-11-16 12:28:22,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 306 transitions, 2344 flow [2022-11-16 12:28:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:28:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:28:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1774 transitions. [2022-11-16 12:28:22,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5441717791411043 [2022-11-16 12:28:22,406 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1774 transitions. [2022-11-16 12:28:22,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1774 transitions. [2022-11-16 12:28:22,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:22,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1774 transitions. [2022-11-16 12:28:22,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.7) internal successors, (1774), 20 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,418 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,419 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 1304 flow. Second operand 20 states and 1774 transitions. [2022-11-16 12:28:22,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 306 transitions, 2344 flow [2022-11-16 12:28:22,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 306 transitions, 2291 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-16 12:28:22,462 INFO L231 Difference]: Finished difference. Result has 248 places, 233 transitions, 1658 flow [2022-11-16 12:28:22,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1658, PETRI_PLACES=248, PETRI_TRANSITIONS=233} [2022-11-16 12:28:22,463 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 97 predicate places. [2022-11-16 12:28:22,463 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 233 transitions, 1658 flow [2022-11-16 12:28:22,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:22,464 INFO L209 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] [2022-11-16 12:28:22,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:28:22,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:22,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 237013254, now seen corresponding path program 5 times [2022-11-16 12:28:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:22,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913899209] [2022-11-16 12:28:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:24,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913899209] [2022-11-16 12:28:24,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913899209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:24,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:24,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:28:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676290369] [2022-11-16 12:28:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:28:24,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:28:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:24,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:28:24,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 233 transitions, 1658 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:24,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:24,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:28:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:26,547 INFO L130 PetriNetUnfolder]: 1199/3520 cut-off events. [2022-11-16 12:28:26,547 INFO L131 PetriNetUnfolder]: For 11920/12065 co-relation queries the response was YES. [2022-11-16 12:28:26,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 3520 events. 1199/3520 cut-off events. For 11920/12065 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 29148 event pairs, 139 based on Foata normal form. 7/3426 useless extension candidates. Maximal degree in co-relation 11153. Up to 821 conditions per place. [2022-11-16 12:28:26,578 INFO L137 encePairwiseOnDemand]: 139/163 looper letters, 172 selfloop transitions, 115 changer transitions 0/359 dead transitions. [2022-11-16 12:28:26,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 359 transitions, 3054 flow [2022-11-16 12:28:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2022-11-16 12:28:26,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2022-11-16 12:28:26,584 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2022-11-16 12:28:26,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2022-11-16 12:28:26,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:26,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2022-11-16 12:28:26,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.80952380952381) internal successors, (1886), 21 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:26,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:26,597 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:26,597 INFO L175 Difference]: Start difference. First operand has 248 places, 233 transitions, 1658 flow. Second operand 21 states and 1886 transitions. [2022-11-16 12:28:26,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 359 transitions, 3054 flow [2022-11-16 12:28:26,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 359 transitions, 2975 flow, removed 35 selfloop flow, removed 5 redundant places. [2022-11-16 12:28:26,661 INFO L231 Difference]: Finished difference. Result has 270 places, 268 transitions, 2387 flow [2022-11-16 12:28:26,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2387, PETRI_PLACES=270, PETRI_TRANSITIONS=268} [2022-11-16 12:28:26,665 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 119 predicate places. [2022-11-16 12:28:26,665 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 268 transitions, 2387 flow [2022-11-16 12:28:26,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:26,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:26,675 INFO L209 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] [2022-11-16 12:28:26,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:28:26,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:26,676 INFO L85 PathProgramCache]: Analyzing trace with hash 499604106, now seen corresponding path program 6 times [2022-11-16 12:28:26,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:26,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879178471] [2022-11-16 12:28:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:26,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879178471] [2022-11-16 12:28:28,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879178471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:28,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:28,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:28:28,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603826441] [2022-11-16 12:28:28,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:28:28,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:28:28,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:28,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:28:28,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 268 transitions, 2387 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:28,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:28,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:28:28,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:30,508 INFO L130 PetriNetUnfolder]: 1192/3600 cut-off events. [2022-11-16 12:28:30,508 INFO L131 PetriNetUnfolder]: For 16031/16150 co-relation queries the response was YES. [2022-11-16 12:28:30,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 3600 events. 1192/3600 cut-off events. For 16031/16150 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 30133 event pairs, 331 based on Foata normal form. 9/3484 useless extension candidates. Maximal degree in co-relation 12311. Up to 1135 conditions per place. [2022-11-16 12:28:30,569 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 236 selfloop transitions, 71 changer transitions 0/379 dead transitions. [2022-11-16 12:28:30,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 379 transitions, 3865 flow [2022-11-16 12:28:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-11-16 12:28:30,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-11-16 12:28:30,578 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-11-16 12:28:30,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-11-16 12:28:30,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:30,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-11-16 12:28:30,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:30,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:30,589 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:30,589 INFO L175 Difference]: Start difference. First operand has 270 places, 268 transitions, 2387 flow. Second operand 21 states and 1877 transitions. [2022-11-16 12:28:30,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 379 transitions, 3865 flow [2022-11-16 12:28:30,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 379 transitions, 3745 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-11-16 12:28:30,699 INFO L231 Difference]: Finished difference. Result has 291 places, 291 transitions, 2882 flow [2022-11-16 12:28:30,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2882, PETRI_PLACES=291, PETRI_TRANSITIONS=291} [2022-11-16 12:28:30,701 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 140 predicate places. [2022-11-16 12:28:30,701 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 291 transitions, 2882 flow [2022-11-16 12:28:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:30,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:30,702 INFO L209 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] [2022-11-16 12:28:30,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:28:30,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1963083982, now seen corresponding path program 7 times [2022-11-16 12:28:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:30,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083978824] [2022-11-16 12:28:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:30,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:32,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083978824] [2022-11-16 12:28:32,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083978824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:32,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:32,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:28:32,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992230905] [2022-11-16 12:28:32,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:32,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:28:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:28:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:28:32,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:28:32,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 291 transitions, 2882 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:32,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:32,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:28:32,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:38,774 INFO L130 PetriNetUnfolder]: 2724/6808 cut-off events. [2022-11-16 12:28:38,774 INFO L131 PetriNetUnfolder]: For 35880/35954 co-relation queries the response was YES. [2022-11-16 12:28:38,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24460 conditions, 6808 events. 2724/6808 cut-off events. For 35880/35954 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 58822 event pairs, 516 based on Foata normal form. 37/6718 useless extension candidates. Maximal degree in co-relation 24384. Up to 2285 conditions per place. [2022-11-16 12:28:38,855 INFO L137 encePairwiseOnDemand]: 135/163 looper letters, 404 selfloop transitions, 104 changer transitions 0/563 dead transitions. [2022-11-16 12:28:38,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 563 transitions, 6809 flow [2022-11-16 12:28:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:28:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:28:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2022-11-16 12:28:38,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2022-11-16 12:28:38,860 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2022-11-16 12:28:38,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2022-11-16 12:28:38,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:38,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2022-11-16 12:28:38,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:38,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:38,872 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:38,873 INFO L175 Difference]: Start difference. First operand has 291 places, 291 transitions, 2882 flow. Second operand 24 states and 2065 transitions. [2022-11-16 12:28:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 563 transitions, 6809 flow [2022-11-16 12:28:39,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 563 transitions, 6558 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-11-16 12:28:39,112 INFO L231 Difference]: Finished difference. Result has 321 places, 342 transitions, 3850 flow [2022-11-16 12:28:39,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3850, PETRI_PLACES=321, PETRI_TRANSITIONS=342} [2022-11-16 12:28:39,114 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 170 predicate places. [2022-11-16 12:28:39,114 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 342 transitions, 3850 flow [2022-11-16 12:28:39,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:39,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:39,116 INFO L209 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] [2022-11-16 12:28:39,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:28:39,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash 149158956, now seen corresponding path program 8 times [2022-11-16 12:28:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:39,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365942662] [2022-11-16 12:28:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:41,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365942662] [2022-11-16 12:28:41,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365942662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:41,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:41,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:28:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918072513] [2022-11-16 12:28:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:28:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:28:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:28:41,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:28:41,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 342 transitions, 3850 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:41,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:41,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:28:41,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:50,307 INFO L130 PetriNetUnfolder]: 4076/9895 cut-off events. [2022-11-16 12:28:50,307 INFO L131 PetriNetUnfolder]: For 62177/62316 co-relation queries the response was YES. [2022-11-16 12:28:50,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37649 conditions, 9895 events. 4076/9895 cut-off events. For 62177/62316 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 91587 event pairs, 422 based on Foata normal form. 95/9822 useless extension candidates. Maximal degree in co-relation 37560. Up to 3440 conditions per place. [2022-11-16 12:28:50,433 INFO L137 encePairwiseOnDemand]: 134/163 looper letters, 403 selfloop transitions, 150 changer transitions 0/608 dead transitions. [2022-11-16 12:28:50,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 608 transitions, 7598 flow [2022-11-16 12:28:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:28:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:28:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2643 transitions. [2022-11-16 12:28:50,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.523055610528399 [2022-11-16 12:28:50,438 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2643 transitions. [2022-11-16 12:28:50,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2643 transitions. [2022-11-16 12:28:50,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:50,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2643 transitions. [2022-11-16 12:28:50,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.25806451612904) internal successors, (2643), 31 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:50,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:50,452 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:50,452 INFO L175 Difference]: Start difference. First operand has 321 places, 342 transitions, 3850 flow. Second operand 31 states and 2643 transitions. [2022-11-16 12:28:50,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 608 transitions, 7598 flow [2022-11-16 12:28:50,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 608 transitions, 7484 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:50,896 INFO L231 Difference]: Finished difference. Result has 364 places, 406 transitions, 5389 flow [2022-11-16 12:28:50,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5389, PETRI_PLACES=364, PETRI_TRANSITIONS=406} [2022-11-16 12:28:50,898 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 213 predicate places. [2022-11-16 12:28:50,898 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 406 transitions, 5389 flow [2022-11-16 12:28:50,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:50,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:50,899 INFO L209 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] [2022-11-16 12:28:50,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:28:50,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:28:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash 788458796, now seen corresponding path program 9 times [2022-11-16 12:28:50,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:50,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654796598] [2022-11-16 12:28:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:52,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:52,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654796598] [2022-11-16 12:28:52,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654796598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:52,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:52,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:28:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26007023] [2022-11-16 12:28:52,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:28:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:52,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:28:52,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:28:52,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:28:52,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 406 transitions, 5389 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:52,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:52,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:28:52,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:03,225 INFO L130 PetriNetUnfolder]: 5689/13594 cut-off events. [2022-11-16 12:29:03,225 INFO L131 PetriNetUnfolder]: For 104503/104684 co-relation queries the response was YES. [2022-11-16 12:29:03,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55865 conditions, 13594 events. 5689/13594 cut-off events. For 104503/104684 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 131622 event pairs, 1218 based on Foata normal form. 77/13454 useless extension candidates. Maximal degree in co-relation 55755. Up to 3767 conditions per place. [2022-11-16 12:29:03,445 INFO L137 encePairwiseOnDemand]: 134/163 looper letters, 404 selfloop transitions, 199 changer transitions 0/658 dead transitions. [2022-11-16 12:29:03,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 658 transitions, 9220 flow [2022-11-16 12:29:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:29:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:29:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2726 transitions. [2022-11-16 12:29:03,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5226226993865031 [2022-11-16 12:29:03,453 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2726 transitions. [2022-11-16 12:29:03,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2726 transitions. [2022-11-16 12:29:03,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:03,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2726 transitions. [2022-11-16 12:29:03,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.1875) internal successors, (2726), 32 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:03,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 163.0) internal successors, (5379), 33 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:03,497 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 163.0) internal successors, (5379), 33 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:03,498 INFO L175 Difference]: Start difference. First operand has 364 places, 406 transitions, 5389 flow. Second operand 32 states and 2726 transitions. [2022-11-16 12:29:03,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 658 transitions, 9220 flow [2022-11-16 12:29:04,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 658 transitions, 8960 flow, removed 116 selfloop flow, removed 6 redundant places. [2022-11-16 12:29:04,477 INFO L231 Difference]: Finished difference. Result has 412 places, 474 transitions, 7262 flow [2022-11-16 12:29:04,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=5216, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7262, PETRI_PLACES=412, PETRI_TRANSITIONS=474} [2022-11-16 12:29:04,478 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 261 predicate places. [2022-11-16 12:29:04,478 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 474 transitions, 7262 flow [2022-11-16 12:29:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:04,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:04,479 INFO L209 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] [2022-11-16 12:29:04,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:29:04,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:29:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1547922784, now seen corresponding path program 10 times [2022-11-16 12:29:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:04,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132310178] [2022-11-16 12:29:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132310178] [2022-11-16 12:29:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132310178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:06,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:29:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508583366] [2022-11-16 12:29:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:29:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:29:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:29:06,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:29:06,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 474 transitions, 7262 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:06,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:06,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:29:06,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:16,345 INFO L130 PetriNetUnfolder]: 6886/16541 cut-off events. [2022-11-16 12:29:16,345 INFO L131 PetriNetUnfolder]: For 159849/160039 co-relation queries the response was YES. [2022-11-16 12:29:16,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72945 conditions, 16541 events. 6886/16541 cut-off events. For 159849/160039 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 167250 event pairs, 1657 based on Foata normal form. 69/16334 useless extension candidates. Maximal degree in co-relation 72812. Up to 7179 conditions per place. [2022-11-16 12:29:16,698 INFO L137 encePairwiseOnDemand]: 135/163 looper letters, 482 selfloop transitions, 173 changer transitions 0/710 dead transitions. [2022-11-16 12:29:16,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 710 transitions, 11761 flow [2022-11-16 12:29:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:29:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:29:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2062 transitions. [2022-11-16 12:29:16,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5270961145194274 [2022-11-16 12:29:16,704 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2062 transitions. [2022-11-16 12:29:16,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2062 transitions. [2022-11-16 12:29:16,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:16,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2062 transitions. [2022-11-16 12:29:16,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.91666666666667) internal successors, (2062), 24 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:16,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:16,717 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:16,718 INFO L175 Difference]: Start difference. First operand has 412 places, 474 transitions, 7262 flow. Second operand 24 states and 2062 transitions. [2022-11-16 12:29:16,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 710 transitions, 11761 flow [2022-11-16 12:29:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 710 transitions, 11410 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:18,162 INFO L231 Difference]: Finished difference. Result has 443 places, 525 transitions, 8712 flow [2022-11-16 12:29:18,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=7023, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8712, PETRI_PLACES=443, PETRI_TRANSITIONS=525} [2022-11-16 12:29:18,163 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 292 predicate places. [2022-11-16 12:29:18,164 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 525 transitions, 8712 flow [2022-11-16 12:29:18,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:18,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:18,164 INFO L209 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] [2022-11-16 12:29:18,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:29:18,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:29:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash -607534250, now seen corresponding path program 11 times [2022-11-16 12:29:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:18,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96146678] [2022-11-16 12:29:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:19,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96146678] [2022-11-16 12:29:19,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96146678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:19,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:19,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:29:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869507784] [2022-11-16 12:29:19,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:19,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:29:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:29:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:29:19,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:29:19,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 525 transitions, 8712 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:19,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:19,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:29:19,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:30,441 INFO L130 PetriNetUnfolder]: 6884/16538 cut-off events. [2022-11-16 12:29:30,441 INFO L131 PetriNetUnfolder]: For 189593/189705 co-relation queries the response was YES. [2022-11-16 12:29:30,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75299 conditions, 16538 events. 6884/16538 cut-off events. For 189593/189705 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 169382 event pairs, 1217 based on Foata normal form. 53/16273 useless extension candidates. Maximal degree in co-relation 75153. Up to 7781 conditions per place. [2022-11-16 12:29:30,820 INFO L137 encePairwiseOnDemand]: 135/163 looper letters, 648 selfloop transitions, 169 changer transitions 0/872 dead transitions. [2022-11-16 12:29:30,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 872 transitions, 15517 flow [2022-11-16 12:29:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:29:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 12:29:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2150 transitions. [2022-11-16 12:29:30,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2022-11-16 12:29:30,825 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2150 transitions. [2022-11-16 12:29:30,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2150 transitions. [2022-11-16 12:29:30,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:30,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2150 transitions. [2022-11-16 12:29:30,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,834 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,835 INFO L175 Difference]: Start difference. First operand has 443 places, 525 transitions, 8712 flow. Second operand 25 states and 2150 transitions. [2022-11-16 12:29:30,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 872 transitions, 15517 flow [2022-11-16 12:29:33,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 872 transitions, 15130 flow, removed 93 selfloop flow, removed 8 redundant places. [2022-11-16 12:29:33,345 INFO L231 Difference]: Finished difference. Result has 467 places, 543 transitions, 9362 flow [2022-11-16 12:29:33,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=8453, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9362, PETRI_PLACES=467, PETRI_TRANSITIONS=543} [2022-11-16 12:29:33,346 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 316 predicate places. [2022-11-16 12:29:33,346 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 543 transitions, 9362 flow [2022-11-16 12:29:33,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:33,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:33,347 INFO L209 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] [2022-11-16 12:29:33,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:29:33,347 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:29:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash 340835736, now seen corresponding path program 12 times [2022-11-16 12:29:33,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:33,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587505258] [2022-11-16 12:29:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:34,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:34,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587505258] [2022-11-16 12:29:34,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587505258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:34,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:34,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:29:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079887925] [2022-11-16 12:29:34,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:34,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:29:34,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:34,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:29:34,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:29:34,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:29:34,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 543 transitions, 9362 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:34,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:34,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:29:34,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:43,642 INFO L130 PetriNetUnfolder]: 6464/17602 cut-off events. [2022-11-16 12:29:43,642 INFO L131 PetriNetUnfolder]: For 197135/199200 co-relation queries the response was YES. [2022-11-16 12:29:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74214 conditions, 17602 events. 6464/17602 cut-off events. For 197135/199200 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 202046 event pairs, 1196 based on Foata normal form. 915/18094 useless extension candidates. Maximal degree in co-relation 74060. Up to 4690 conditions per place. [2022-11-16 12:29:44,189 INFO L137 encePairwiseOnDemand]: 139/163 looper letters, 553 selfloop transitions, 209 changer transitions 0/879 dead transitions. [2022-11-16 12:29:44,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 879 transitions, 17483 flow [2022-11-16 12:29:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:29:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:29:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1688 transitions. [2022-11-16 12:29:44,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5450435905715209 [2022-11-16 12:29:44,193 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1688 transitions. [2022-11-16 12:29:44,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1688 transitions. [2022-11-16 12:29:44,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:44,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1688 transitions. [2022-11-16 12:29:44,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.84210526315789) internal successors, (1688), 19 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:44,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:44,202 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:44,202 INFO L175 Difference]: Start difference. First operand has 467 places, 543 transitions, 9362 flow. Second operand 19 states and 1688 transitions. [2022-11-16 12:29:44,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 879 transitions, 17483 flow [2022-11-16 12:29:46,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 879 transitions, 17253 flow, removed 44 selfloop flow, removed 13 redundant places. [2022-11-16 12:29:46,278 INFO L231 Difference]: Finished difference. Result has 480 places, 640 transitions, 12060 flow [2022-11-16 12:29:46,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12060, PETRI_PLACES=480, PETRI_TRANSITIONS=640} [2022-11-16 12:29:46,280 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 329 predicate places. [2022-11-16 12:29:46,280 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 640 transitions, 12060 flow [2022-11-16 12:29:46,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:46,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:46,281 INFO L209 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] [2022-11-16 12:29:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:29:46,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:29:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1028361340, now seen corresponding path program 13 times [2022-11-16 12:29:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:46,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797723082] [2022-11-16 12:29:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:46,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797723082] [2022-11-16 12:29:47,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797723082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:47,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:47,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:29:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774548188] [2022-11-16 12:29:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:29:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:29:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:29:47,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-16 12:29:47,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 640 transitions, 12060 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:47,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:47,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-16 12:29:47,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:00,847 INFO L130 PetriNetUnfolder]: 8371/24667 cut-off events. [2022-11-16 12:30:00,847 INFO L131 PetriNetUnfolder]: For 289282/291606 co-relation queries the response was YES. [2022-11-16 12:30:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107081 conditions, 24667 events. 8371/24667 cut-off events. For 289282/291606 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 304585 event pairs, 3825 based on Foata normal form. 1037/25134 useless extension candidates. Maximal degree in co-relation 106919. Up to 8784 conditions per place. [2022-11-16 12:30:01,604 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 652 selfloop transitions, 245 changer transitions 0/1014 dead transitions. [2022-11-16 12:30:01,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1014 transitions, 20798 flow [2022-11-16 12:30:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:30:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:30:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1867 transitions. [2022-11-16 12:30:01,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5454279871457786 [2022-11-16 12:30:01,608 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1867 transitions. [2022-11-16 12:30:01,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1867 transitions. [2022-11-16 12:30:01,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:01,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1867 transitions. [2022-11-16 12:30:01,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.9047619047619) internal successors, (1867), 21 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:01,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:01,617 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:01,618 INFO L175 Difference]: Start difference. First operand has 480 places, 640 transitions, 12060 flow. Second operand 21 states and 1867 transitions. [2022-11-16 12:30:01,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1014 transitions, 20798 flow [2022-11-16 12:30:04,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1014 transitions, 20579 flow, removed 54 selfloop flow, removed 8 redundant places. [2022-11-16 12:30:04,075 INFO L231 Difference]: Finished difference. Result has 503 places, 757 transitions, 15659 flow [2022-11-16 12:30:04,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=11892, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15659, PETRI_PLACES=503, PETRI_TRANSITIONS=757} [2022-11-16 12:30:04,076 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 352 predicate places. [2022-11-16 12:30:04,076 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 757 transitions, 15659 flow [2022-11-16 12:30:04,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:04,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:04,077 INFO L209 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] [2022-11-16 12:30:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:30:04,078 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:30:04,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1671104464, now seen corresponding path program 14 times [2022-11-16 12:30:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:04,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242804400] [2022-11-16 12:30:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:06,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242804400] [2022-11-16 12:30:06,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242804400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:06,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:06,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:30:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214607499] [2022-11-16 12:30:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:06,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:30:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:30:06,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:30:06,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-16 12:30:06,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 757 transitions, 15659 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:06,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:06,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-16 12:30:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand