./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:57,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:58,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:37:58,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:58,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:58,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:58,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:58,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:58,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:58,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:58,111 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:58,112 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:58,112 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:58,112 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:58,113 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:58,115 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:58,115 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:58,116 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:58,116 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:58,116 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:58,117 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:58,120 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:58,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:58,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:58,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:58,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:58,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:58,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:58,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:58,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:58,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:58,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:58,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:58,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:58,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:58,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:58,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:58,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:58,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:58,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:58,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:58,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:58,128 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:58,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:58,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:58,130 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:58,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:58,130 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f [2024-11-02 12:37:58,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:58,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:58,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:58,461 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:58,462 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:58,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c Unable to find full path for "g++" [2024-11-02 12:38:00,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:38:00,966 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:38:00,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c [2024-11-02 12:38:00,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/data/2bf6ffcb3/5a53378aeb824047bb29824625730903/FLAGfe1918f5b [2024-11-02 12:38:01,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/data/2bf6ffcb3/5a53378aeb824047bb29824625730903 [2024-11-02 12:38:01,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:38:01,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:38:01,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:01,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:38:01,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:38:01,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:01" (1/1) ... [2024-11-02 12:38:01,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b863fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:01, skipping insertion in model container [2024-11-02 12:38:01,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:01" (1/1) ... [2024-11-02 12:38:01,096 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:38:01,770 WARN L251 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_67947940-fdff-4fdb-8818-3d6fb3c24aa0/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2024-11-02 12:38:01,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:01,818 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:38:01,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-02 12:38:01,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2024-11-02 12:38:01,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [516] [2024-11-02 12:38:01,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [873] [2024-11-02 12:38:01,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2432] [2024-11-02 12:38:01,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3093] [2024-11-02 12:38:01,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2024-11-02 12:38:01,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [3114] [2024-11-02 12:38:01,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3273] [2024-11-02 12:38:01,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3308] [2024-11-02 12:38:02,059 WARN L251 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_67947940-fdff-4fdb-8818-3d6fb3c24aa0/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2024-11-02 12:38:02,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:02,111 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:38:02,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02 WrapperNode [2024-11-02 12:38:02,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:02,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:02,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:38:02,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:38:02,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,213 INFO L138 Inliner]: procedures = 95, calls = 339, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1121 [2024-11-02 12:38:02,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:02,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:38:02,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:38:02,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:38:02,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:38:02,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:38:02,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:38:02,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:38:02,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (1/1) ... [2024-11-02 12:38:02,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:02,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:02,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:38:02,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:38:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:38:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-02 12:38:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-02 12:38:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-02 12:38:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-02 12:38:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-02 12:38:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-02 12:38:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-02 12:38:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-02 12:38:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-02 12:38:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-02 12:38:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-02 12:38:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-02 12:38:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:38:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:38:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:38:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:38:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-02 12:38:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-02 12:38:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-02 12:38:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-02 12:38:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-02 12:38:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-02 12:38:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-02 12:38:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-02 12:38:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-02 12:38:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-02 12:38:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-02 12:38:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-02 12:38:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-02 12:38:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-02 12:38:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-02 12:38:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-02 12:38:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-02 12:38:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-02 12:38:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-02 12:38:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-02 12:38:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-02 12:38:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-02 12:38:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2024-11-02 12:38:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2024-11-02 12:38:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:38:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-02 12:38:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-02 12:38:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-02 12:38:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-02 12:38:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-02 12:38:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-02 12:38:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:38:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:38:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-02 12:38:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-02 12:38:02,604 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:38:02,606 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:38:04,207 INFO L? ?]: Removed 455 outVars from TransFormulas that were not future-live. [2024-11-02 12:38:04,207 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:38:05,371 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:38:05,372 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:38:05,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:05 BoogieIcfgContainer [2024-11-02 12:38:05,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:38:05,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:38:05,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:38:05,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:38:05,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:38:01" (1/3) ... [2024-11-02 12:38:05,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311c4297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:05, skipping insertion in model container [2024-11-02 12:38:05,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:02" (2/3) ... [2024-11-02 12:38:05,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311c4297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:05, skipping insertion in model container [2024-11-02 12:38:05,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:05" (3/3) ... [2024-11-02 12:38:05,389 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2024-11-02 12:38:05,409 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:38:05,409 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:38:05,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:38:05,504 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5240337a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:38:05,504 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:38:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 246 states have (on average 1.5934959349593496) internal successors, (392), 267 states have internal predecessors, (392), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-02 12:38:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-02 12:38:05,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:05,536 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:05,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:05,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash -886740953, now seen corresponding path program 1 times [2024-11-02 12:38:05,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:05,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137650033] [2024-11-02 12:38:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:06,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:06,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137650033] [2024-11-02 12:38:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137650033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429281993] [2024-11-02 12:38:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:06,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:38:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:38:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:38:06,155 INFO L87 Difference]: Start difference. First operand has 365 states, 246 states have (on average 1.5934959349593496) internal successors, (392), 267 states have internal predecessors, (392), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-02 12:38:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:06,353 INFO L93 Difference]: Finished difference Result 383 states and 605 transitions. [2024-11-02 12:38:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:38:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 77 [2024-11-02 12:38:06,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:06,376 INFO L225 Difference]: With dead ends: 383 [2024-11-02 12:38:06,376 INFO L226 Difference]: Without dead ends: 361 [2024-11-02 12:38:06,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:38:06,384 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:06,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-02 12:38:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-02 12:38:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 263 states have internal predecessors, (386), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-02 12:38:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 567 transitions. [2024-11-02 12:38:06,483 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 567 transitions. Word has length 77 [2024-11-02 12:38:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:06,485 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 567 transitions. [2024-11-02 12:38:06,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-02 12:38:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 567 transitions. [2024-11-02 12:38:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-02 12:38:06,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:06,502 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:06,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:06,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:06,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 66157257, now seen corresponding path program 1 times [2024-11-02 12:38:06,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:06,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314772052] [2024-11-02 12:38:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:06,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:07,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314772052] [2024-11-02 12:38:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314772052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:07,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:07,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:38:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585098139] [2024-11-02 12:38:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:07,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:38:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:38:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:07,250 INFO L87 Difference]: Start difference. First operand 361 states and 567 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-02 12:38:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:10,229 INFO L93 Difference]: Finished difference Result 1092 states and 1742 transitions. [2024-11-02 12:38:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:38:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 78 [2024-11-02 12:38:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:10,236 INFO L225 Difference]: With dead ends: 1092 [2024-11-02 12:38:10,237 INFO L226 Difference]: Without dead ends: 747 [2024-11-02 12:38:10,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:38:10,242 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 1110 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:10,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1367 Invalid, 2539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [412 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-02 12:38:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-02 12:38:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 709. [2024-11-02 12:38:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 488 states have (on average 1.5942622950819672) internal successors, (778), 521 states have internal predecessors, (778), 176 states have call successors, (176), 44 states have call predecessors, (176), 44 states have return successors, (177), 168 states have call predecessors, (177), 171 states have call successors, (177) [2024-11-02 12:38:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2024-11-02 12:38:10,310 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 78 [2024-11-02 12:38:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:10,311 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2024-11-02 12:38:10,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-02 12:38:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2024-11-02 12:38:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-02 12:38:10,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:10,320 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:10,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:38:10,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:10,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1357505786, now seen corresponding path program 1 times [2024-11-02 12:38:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:10,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517838310] [2024-11-02 12:38:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:10,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:10,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:10,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517838310] [2024-11-02 12:38:10,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517838310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:10,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:10,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:38:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958035491] [2024-11-02 12:38:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:10,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:38:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:38:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:10,741 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:38:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:11,376 INFO L93 Difference]: Finished difference Result 780 states and 1243 transitions. [2024-11-02 12:38:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2024-11-02 12:38:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:11,383 INFO L225 Difference]: With dead ends: 780 [2024-11-02 12:38:11,383 INFO L226 Difference]: Without dead ends: 765 [2024-11-02 12:38:11,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:11,386 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 631 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:11,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1421 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:38:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-02 12:38:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 713. [2024-11-02 12:38:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 492 states have (on average 1.589430894308943) internal successors, (782), 525 states have internal predecessors, (782), 176 states have call successors, (176), 44 states have call predecessors, (176), 44 states have return successors, (177), 168 states have call predecessors, (177), 171 states have call successors, (177) [2024-11-02 12:38:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1135 transitions. [2024-11-02 12:38:11,466 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1135 transitions. Word has length 82 [2024-11-02 12:38:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:11,468 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1135 transitions. [2024-11-02 12:38:11,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:38:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1135 transitions. [2024-11-02 12:38:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-02 12:38:11,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:11,474 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:11,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:38:11,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:11,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2123443322, now seen corresponding path program 1 times [2024-11-02 12:38:11,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:11,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547921915] [2024-11-02 12:38:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:11,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:11,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547921915] [2024-11-02 12:38:11,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547921915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:11,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:11,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:38:11,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142130044] [2024-11-02 12:38:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:11,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:11,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:11,754 INFO L87 Difference]: Start difference. First operand 713 states and 1135 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-02 12:38:11,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:11,945 INFO L93 Difference]: Finished difference Result 728 states and 1153 transitions. [2024-11-02 12:38:11,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:11,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 87 [2024-11-02 12:38:11,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:11,951 INFO L225 Difference]: With dead ends: 728 [2024-11-02 12:38:11,952 INFO L226 Difference]: Without dead ends: 713 [2024-11-02 12:38:11,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:11,954 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:11,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2114 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-02 12:38:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-02 12:38:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 492 states have (on average 1.5853658536585367) internal successors, (780), 525 states have internal predecessors, (780), 176 states have call successors, (176), 44 states have call predecessors, (176), 44 states have return successors, (177), 168 states have call predecessors, (177), 171 states have call successors, (177) [2024-11-02 12:38:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1133 transitions. [2024-11-02 12:38:12,004 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1133 transitions. Word has length 87 [2024-11-02 12:38:12,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:12,004 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1133 transitions. [2024-11-02 12:38:12,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-02 12:38:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1133 transitions. [2024-11-02 12:38:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-02 12:38:12,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:12,008 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:12,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:38:12,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:12,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash -43166775, now seen corresponding path program 1 times [2024-11-02 12:38:12,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:12,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523423380] [2024-11-02 12:38:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:12,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:38:12,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523423380] [2024-11-02 12:38:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523423380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:12,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:12,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749651840] [2024-11-02 12:38:12,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:12,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:12,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:12,157 INFO L87 Difference]: Start difference. First operand 713 states and 1133 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:12,401 INFO L93 Difference]: Finished difference Result 2073 states and 3329 transitions. [2024-11-02 12:38:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-02 12:38:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:12,416 INFO L225 Difference]: With dead ends: 2073 [2024-11-02 12:38:12,416 INFO L226 Difference]: Without dead ends: 1376 [2024-11-02 12:38:12,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:12,421 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 522 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:12,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1096 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-02 12:38:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1348. [2024-11-02 12:38:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 950 states have (on average 1.5989473684210527) internal successors, (1519), 1012 states have internal predecessors, (1519), 316 states have call successors, (316), 79 states have call predecessors, (316), 81 states have return successors, (330), 294 states have call predecessors, (330), 311 states have call successors, (330) [2024-11-02 12:38:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2165 transitions. [2024-11-02 12:38:12,527 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2165 transitions. Word has length 94 [2024-11-02 12:38:12,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:12,528 INFO L471 AbstractCegarLoop]: Abstraction has 1348 states and 2165 transitions. [2024-11-02 12:38:12,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2165 transitions. [2024-11-02 12:38:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-02 12:38:12,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:12,532 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:12,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:38:12,533 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:12,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1338300945, now seen corresponding path program 1 times [2024-11-02 12:38:12,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:12,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226274765] [2024-11-02 12:38:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:38:12,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:12,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226274765] [2024-11-02 12:38:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226274765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:12,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:12,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:12,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145495338] [2024-11-02 12:38:12,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:12,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:12,711 INFO L87 Difference]: Start difference. First operand 1348 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:13,041 INFO L93 Difference]: Finished difference Result 3977 states and 6448 transitions. [2024-11-02 12:38:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:13,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 95 [2024-11-02 12:38:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:13,061 INFO L225 Difference]: With dead ends: 3977 [2024-11-02 12:38:13,062 INFO L226 Difference]: Without dead ends: 2648 [2024-11-02 12:38:13,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:13,069 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 521 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:13,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1103 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-11-02 12:38:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2619. [2024-11-02 12:38:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1867 states have (on average 1.604713444027852) internal successors, (2996), 1987 states have internal predecessors, (2996), 596 states have call successors, (596), 149 states have call predecessors, (596), 155 states have return successors, (652), 546 states have call predecessors, (652), 591 states have call successors, (652) [2024-11-02 12:38:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4244 transitions. [2024-11-02 12:38:13,254 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4244 transitions. Word has length 95 [2024-11-02 12:38:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:13,255 INFO L471 AbstractCegarLoop]: Abstraction has 2619 states and 4244 transitions. [2024-11-02 12:38:13,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:13,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4244 transitions. [2024-11-02 12:38:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-02 12:38:13,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:13,258 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:13,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:38:13,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:13,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1462216651, now seen corresponding path program 1 times [2024-11-02 12:38:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310663243] [2024-11-02 12:38:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:38:13,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:13,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310663243] [2024-11-02 12:38:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310663243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:13,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:13,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:13,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685383673] [2024-11-02 12:38:13,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:13,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:13,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:13,406 INFO L87 Difference]: Start difference. First operand 2619 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:13,824 INFO L93 Difference]: Finished difference Result 7786 states and 12764 transitions. [2024-11-02 12:38:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2024-11-02 12:38:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:13,865 INFO L225 Difference]: With dead ends: 7786 [2024-11-02 12:38:13,866 INFO L226 Difference]: Without dead ends: 5192 [2024-11-02 12:38:13,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:13,913 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 520 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:13,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1109 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5192 states. [2024-11-02 12:38:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5192 to 5162. [2024-11-02 12:38:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5162 states, 3702 states have (on average 1.606158833063209) internal successors, (5946), 3938 states have internal predecessors, (5946), 1156 states have call successors, (1156), 289 states have call predecessors, (1156), 303 states have return successors, (1356), 1050 states have call predecessors, (1356), 1151 states have call successors, (1356) [2024-11-02 12:38:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 8458 transitions. [2024-11-02 12:38:14,340 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 8458 transitions. Word has length 96 [2024-11-02 12:38:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:14,341 INFO L471 AbstractCegarLoop]: Abstraction has 5162 states and 8458 transitions. [2024-11-02 12:38:14,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 8458 transitions. [2024-11-02 12:38:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-02 12:38:14,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:14,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:14,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:38:14,345 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:14,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1916047183, now seen corresponding path program 1 times [2024-11-02 12:38:14,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:14,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075040686] [2024-11-02 12:38:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:14,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:38:14,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:14,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075040686] [2024-11-02 12:38:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075040686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:14,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360486129] [2024-11-02 12:38:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:14,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:14,475 INFO L87 Difference]: Start difference. First operand 5162 states and 8458 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:15,224 INFO L93 Difference]: Finished difference Result 15405 states and 25693 transitions. [2024-11-02 12:38:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:15,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 97 [2024-11-02 12:38:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:15,304 INFO L225 Difference]: With dead ends: 15405 [2024-11-02 12:38:15,305 INFO L226 Difference]: Without dead ends: 10280 [2024-11-02 12:38:15,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:15,335 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 519 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:15,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1115 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2024-11-02 12:38:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 10249. [2024-11-02 12:38:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10249 states, 7373 states have (on average 1.605316696053167) internal successors, (11836), 7841 states have internal predecessors, (11836), 2276 states have call successors, (2276), 569 states have call predecessors, (2276), 599 states have return successors, (2992), 2058 states have call predecessors, (2992), 2271 states have call successors, (2992) [2024-11-02 12:38:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10249 states to 10249 states and 17104 transitions. [2024-11-02 12:38:16,128 INFO L78 Accepts]: Start accepts. Automaton has 10249 states and 17104 transitions. Word has length 97 [2024-11-02 12:38:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:16,129 INFO L471 AbstractCegarLoop]: Abstraction has 10249 states and 17104 transitions. [2024-11-02 12:38:16,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 10249 states and 17104 transitions. [2024-11-02 12:38:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-02 12:38:16,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:16,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:16,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:38:16,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:16,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 731960269, now seen corresponding path program 1 times [2024-11-02 12:38:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188954024] [2024-11-02 12:38:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:38:16,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:16,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188954024] [2024-11-02 12:38:16,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188954024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:16,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:16,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:16,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955268731] [2024-11-02 12:38:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:16,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:16,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:16,397 INFO L87 Difference]: Start difference. First operand 10249 states and 17104 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:17,218 INFO L93 Difference]: Finished difference Result 10917 states and 18261 transitions. [2024-11-02 12:38:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 98 [2024-11-02 12:38:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:17,312 INFO L225 Difference]: With dead ends: 10917 [2024-11-02 12:38:17,312 INFO L226 Difference]: Without dead ends: 10906 [2024-11-02 12:38:17,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:17,319 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 505 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:17,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1113 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10906 states. [2024-11-02 12:38:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10906 to 10876. [2024-11-02 12:38:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10876 states, 7824 states have (on average 1.6046779141104295) internal successors, (12555), 8321 states have internal predecessors, (12555), 2416 states have call successors, (2416), 604 states have call predecessors, (2416), 635 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-02 12:38:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10876 states to 10876 states and 18205 transitions. [2024-11-02 12:38:18,218 INFO L78 Accepts]: Start accepts. Automaton has 10876 states and 18205 transitions. Word has length 98 [2024-11-02 12:38:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:18,222 INFO L471 AbstractCegarLoop]: Abstraction has 10876 states and 18205 transitions. [2024-11-02 12:38:18,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:38:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 10876 states and 18205 transitions. [2024-11-02 12:38:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-02 12:38:18,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:18,231 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:18,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:38:18,232 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:18,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1613264624, now seen corresponding path program 1 times [2024-11-02 12:38:18,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:18,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538626077] [2024-11-02 12:38:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:18,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-02 12:38:18,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538626077] [2024-11-02 12:38:18,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538626077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:18,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:18,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538642805] [2024-11-02 12:38:18,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:18,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:18,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:18,526 INFO L87 Difference]: Start difference. First operand 10876 states and 18205 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-02 12:38:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:19,497 INFO L93 Difference]: Finished difference Result 21803 states and 37072 transitions. [2024-11-02 12:38:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:19,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 147 [2024-11-02 12:38:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:19,586 INFO L225 Difference]: With dead ends: 21803 [2024-11-02 12:38:19,586 INFO L226 Difference]: Without dead ends: 10944 [2024-11-02 12:38:19,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:19,814 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:19,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1581 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10944 states. [2024-11-02 12:38:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10944 to 10944. [2024-11-02 12:38:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10944 states, 7892 states have (on average 1.5994678155093767) internal successors, (12623), 8389 states have internal predecessors, (12623), 2416 states have call successors, (2416), 604 states have call predecessors, (2416), 635 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-02 12:38:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10944 states to 10944 states and 18273 transitions. [2024-11-02 12:38:21,027 INFO L78 Accepts]: Start accepts. Automaton has 10944 states and 18273 transitions. Word has length 147 [2024-11-02 12:38:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:21,028 INFO L471 AbstractCegarLoop]: Abstraction has 10944 states and 18273 transitions. [2024-11-02 12:38:21,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-02 12:38:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 10944 states and 18273 transitions. [2024-11-02 12:38:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-02 12:38:21,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:21,035 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:21,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:38:21,035 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:21,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1760365196, now seen corresponding path program 1 times [2024-11-02 12:38:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256419703] [2024-11-02 12:38:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-02 12:38:21,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256419703] [2024-11-02 12:38:21,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256419703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658855322] [2024-11-02 12:38:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:21,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:21,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:21,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:38:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:21,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:38:21,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-02 12:38:22,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:38:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658855322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:22,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:38:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 12:38:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876280159] [2024-11-02 12:38:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:22,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:22,060 INFO L87 Difference]: Start difference. First operand 10944 states and 18273 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 12:38:23,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:23,202 INFO L93 Difference]: Finished difference Result 23401 states and 40098 transitions. [2024-11-02 12:38:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:23,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 150 [2024-11-02 12:38:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:23,307 INFO L225 Difference]: With dead ends: 23401 [2024-11-02 12:38:23,307 INFO L226 Difference]: Without dead ends: 12474 [2024-11-02 12:38:23,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:23,360 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 144 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:23,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1384 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:38:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12474 states. [2024-11-02 12:38:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12474 to 12270. [2024-11-02 12:38:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12270 states, 9184 states have (on average 1.64470818815331) internal successors, (15105), 9681 states have internal predecessors, (15105), 2416 states have call successors, (2416), 638 states have call predecessors, (2416), 669 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-02 12:38:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12270 states to 12270 states and 20755 transitions. [2024-11-02 12:38:24,330 INFO L78 Accepts]: Start accepts. Automaton has 12270 states and 20755 transitions. Word has length 150 [2024-11-02 12:38:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:24,331 INFO L471 AbstractCegarLoop]: Abstraction has 12270 states and 20755 transitions. [2024-11-02 12:38:24,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 12:38:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12270 states and 20755 transitions. [2024-11-02 12:38:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-02 12:38:24,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:24,339 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:24,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:38:24,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:24,540 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:24,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1649918453, now seen corresponding path program 1 times [2024-11-02 12:38:24,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:24,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139482746] [2024-11-02 12:38:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:24,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-02 12:38:24,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139482746] [2024-11-02 12:38:24,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139482746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:24,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561220215] [2024-11-02 12:38:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:24,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:24,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:24,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:24,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67947940-fdff-4fdb-8818-3d6fb3c24aa0/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:38:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:25,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:38:25,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-02 12:38:25,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:38:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561220215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:25,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:38:25,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 12:38:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786323065] [2024-11-02 12:38:25,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:25,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:25,522 INFO L87 Difference]: Start difference. First operand 12270 states and 20755 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 12:38:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:26,872 INFO L93 Difference]: Finished difference Result 26155 states and 45096 transitions. [2024-11-02 12:38:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:26,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 155 [2024-11-02 12:38:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted.