./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ --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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:23:50,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:23:50,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:23:50,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:23:50,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:23:50,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:23:50,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:23:50,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:23:50,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:23:50,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:23:50,769 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:23:50,770 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:23:50,770 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:23:50,771 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:23:50,771 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:23:50,772 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:23:50,772 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:23:50,773 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:23:50,773 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:23:50,774 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:23:50,774 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:23:50,775 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:23:50,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:23:50,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:23:50,776 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:23:50,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:23:50,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:23:50,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:23:50,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:23:50,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:23:50,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:23:50,779 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:23:50,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:23:50,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:23:50,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:23:50,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:23:50,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:50,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:23:50,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:23:50,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:23:50,797 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:23:50,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:23:50,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:23:50,799 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:23:50,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:23:50,799 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_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2023-11-19 05:23:51,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:23:51,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:23:51,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:23:51,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:23:51,099 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:23:51,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2023-11-19 05:23:54,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:23:54,544 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:23:54,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2023-11-19 05:23:54,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/data/ad922577f/221358650bb247e2912bc78256fef4f7/FLAG04d4addfa [2023-11-19 05:23:54,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/data/ad922577f/221358650bb247e2912bc78256fef4f7 [2023-11-19 05:23:54,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:23:54,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:23:54,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:54,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:23:54,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:23:54,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:54" (1/1) ... [2023-11-19 05:23:54,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c85c4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:54, skipping insertion in model container [2023-11-19 05:23:54,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:54" (1/1) ... [2023-11-19 05:23:54,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:23:55,142 WARN L240 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_d5e69154-9cb9-4993-bce7-5d748dd10a0f/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2023-11-19 05:23:55,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:55,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:23:55,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-11-19 05:23:55,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2023-11-19 05:23:55,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [185] [2023-11-19 05:23:55,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [370] [2023-11-19 05:23:55,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1901] [2023-11-19 05:23:55,287 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1939] [2023-11-19 05:23:55,288 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1948] [2023-11-19 05:23:55,288 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2023-11-19 05:23:55,288 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2407] [2023-11-19 05:23:55,288 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2757] [2023-11-19 05:23:55,411 WARN L240 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_d5e69154-9cb9-4993-bce7-5d748dd10a0f/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2023-11-19 05:23:55,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:55,541 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:23:55,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55 WrapperNode [2023-11-19 05:23:55,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:55,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:55,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:23:55,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:23:55,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,785 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1117 [2023-11-19 05:23:55,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:55,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:23:55,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:23:55,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:23:55,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:23:55,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:23:55,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:23:55,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:23:55,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (1/1) ... [2023-11-19 05:23:55,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:55,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:23:55,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:23:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-19 05:23:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-19 05:23:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:23:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-19 05:23:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-19 05:23:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-19 05:23:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-19 05:23:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-19 05:23:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-19 05:23:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-19 05:23:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-19 05:23:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-19 05:23:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-19 05:23:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 05:23:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 05:23:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 05:23:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 05:23:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-19 05:23:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-19 05:23:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 05:23:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 05:23:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-19 05:23:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-19 05:23:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-19 05:23:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-19 05:23:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-19 05:23:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-19 05:23:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-19 05:23:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-19 05:23:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-19 05:23:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-19 05:23:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-19 05:23:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-19 05:23:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-19 05:23:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-19 05:23:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-19 05:23:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-19 05:23:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-19 05:23:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-19 05:23:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-19 05:23:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-19 05:23:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:23:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-19 05:23:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-19 05:23:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-19 05:23:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-19 05:23:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-19 05:23:56,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-19 05:23:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:23:56,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:23:56,004 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-19 05:23:56,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-19 05:23:56,222 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:23:56,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:23:57,361 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:23:58,286 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:23:58,287 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:23:58,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:58 BoogieIcfgContainer [2023-11-19 05:23:58,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:23:58,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:23:58,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:23:58,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:23:58,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:23:54" (1/3) ... [2023-11-19 05:23:58,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798a7e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:58, skipping insertion in model container [2023-11-19 05:23:58,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:55" (2/3) ... [2023-11-19 05:23:58,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798a7e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:58, skipping insertion in model container [2023-11-19 05:23:58,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:58" (3/3) ... [2023-11-19 05:23:58,307 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2023-11-19 05:23:58,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:23:58,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:23:58,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:23:58,410 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@32d7ee2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:23:58,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:23:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-19 05:23:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 05:23:58,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:58,444 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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] [2023-11-19 05:23:58,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:23:58,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash 395993298, now seen corresponding path program 1 times [2023-11-19 05:23:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773442282] [2023-11-19 05:23:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 05:23:59,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773442282] [2023-11-19 05:23:59,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773442282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:59,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:59,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757576148] [2023-11-19 05:23:59,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:59,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:23:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:59,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:23:59,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:23:59,245 INFO L87 Difference]: Start difference. First operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 05:23:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:59,455 INFO L93 Difference]: Finished difference Result 393 states and 623 transitions. [2023-11-19 05:23:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:23:59,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2023-11-19 05:23:59,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:59,480 INFO L225 Difference]: With dead ends: 393 [2023-11-19 05:23:59,480 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 05:23:59,484 INFO L412 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 [2023-11-19 05:23:59,488 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:59,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 05:23:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-19 05:23:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 05:23:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 585 transitions. [2023-11-19 05:23:59,576 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 585 transitions. Word has length 88 [2023-11-19 05:23:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:59,578 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 585 transitions. [2023-11-19 05:23:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 05:23:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 585 transitions. [2023-11-19 05:23:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 05:23:59,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:59,586 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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] [2023-11-19 05:23:59,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:23:59,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:23:59,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -561861494, now seen corresponding path program 1 times [2023-11-19 05:23:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:59,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456507074] [2023-11-19 05:23:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:59,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 05:24:00,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:00,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456507074] [2023-11-19 05:24:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456507074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:00,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:24:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976314036] [2023-11-19 05:24:00,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:00,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:24:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:24:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:24:00,334 INFO L87 Difference]: Start difference. First operand 371 states and 585 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 05:24:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:02,803 INFO L93 Difference]: Finished difference Result 1130 states and 1816 transitions. [2023-11-19 05:24:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:24:02,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2023-11-19 05:24:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:02,814 INFO L225 Difference]: With dead ends: 1130 [2023-11-19 05:24:02,814 INFO L226 Difference]: Without dead ends: 782 [2023-11-19 05:24:02,821 INFO L412 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 [2023-11-19 05:24:02,822 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1142 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:02,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1605 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 05:24:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-11-19 05:24:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 733. [2023-11-19 05:24:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 504 states have (on average 1.5992063492063493) internal successors, (806), 537 states have internal predecessors, (806), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-11-19 05:24:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1177 transitions. [2023-11-19 05:24:02,929 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1177 transitions. Word has length 89 [2023-11-19 05:24:02,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:02,931 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1177 transitions. [2023-11-19 05:24:02,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 05:24:02,932 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1177 transitions. [2023-11-19 05:24:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 05:24:02,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:02,938 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1] [2023-11-19 05:24:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:24:02,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:02,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1280693141, now seen corresponding path program 1 times [2023-11-19 05:24:02,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:02,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560698566] [2023-11-19 05:24:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 05:24:03,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560698566] [2023-11-19 05:24:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560698566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:03,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:03,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:24:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329947204] [2023-11-19 05:24:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:24:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:24:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:24:03,378 INFO L87 Difference]: Start difference. First operand 733 states and 1177 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 05:24:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:04,067 INFO L93 Difference]: Finished difference Result 804 states and 1289 transitions. [2023-11-19 05:24:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:24:04,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-11-19 05:24:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:04,076 INFO L225 Difference]: With dead ends: 804 [2023-11-19 05:24:04,076 INFO L226 Difference]: Without dead ends: 789 [2023-11-19 05:24:04,078 INFO L412 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 [2023-11-19 05:24:04,079 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 648 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:04,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1817 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:24:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-11-19 05:24:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 737. [2023-11-19 05:24:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 508 states have (on average 1.594488188976378) internal successors, (810), 541 states have internal predecessors, (810), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-11-19 05:24:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1181 transitions. [2023-11-19 05:24:04,157 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1181 transitions. Word has length 93 [2023-11-19 05:24:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:04,159 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1181 transitions. [2023-11-19 05:24:04,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 05:24:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1181 transitions. [2023-11-19 05:24:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 05:24:04,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:04,163 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:24:04,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -600970529, now seen corresponding path program 1 times [2023-11-19 05:24:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313741716] [2023-11-19 05:24:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 05:24:04,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:04,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313741716] [2023-11-19 05:24:04,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313741716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:04,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:04,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:24:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67492627] [2023-11-19 05:24:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:04,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:24:04,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:24:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:04,584 INFO L87 Difference]: Start difference. First operand 737 states and 1181 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 05:24:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:04,783 INFO L93 Difference]: Finished difference Result 756 states and 1205 transitions. [2023-11-19 05:24:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:24:04,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2023-11-19 05:24:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:04,792 INFO L225 Difference]: With dead ends: 756 [2023-11-19 05:24:04,793 INFO L226 Difference]: Without dead ends: 741 [2023-11-19 05:24:04,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:24:04,795 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 30 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:04,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2184 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:24:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-11-19 05:24:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2023-11-19 05:24:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 508 states have (on average 1.5905511811023623) internal successors, (808), 541 states have internal predecessors, (808), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-11-19 05:24:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1179 transitions. [2023-11-19 05:24:04,867 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1179 transitions. Word has length 98 [2023-11-19 05:24:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:04,868 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1179 transitions. [2023-11-19 05:24:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 05:24:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1179 transitions. [2023-11-19 05:24:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 05:24:04,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:04,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:04,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:24:04,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:04,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2101659709, now seen corresponding path program 1 times [2023-11-19 05:24:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:04,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788603120] [2023-11-19 05:24:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:04,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:24:09,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788603120] [2023-11-19 05:24:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788603120] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:09,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50294667] [2023-11-19 05:24:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:09,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:09,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:09,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:09,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:24:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:09,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-19 05:24:09,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 05:24:10,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50294667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:24:10,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [26] total 34 [2023-11-19 05:24:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154310208] [2023-11-19 05:24:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:10,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:24:10,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:10,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:24:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1031, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 05:24:10,505 INFO L87 Difference]: Start difference. First operand 737 states and 1179 transitions. Second operand has 10 states, 6 states have (on average 9.333333333333334) internal successors, (56), 8 states have internal predecessors, (56), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-19 05:24:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:13,095 INFO L93 Difference]: Finished difference Result 1441 states and 2321 transitions. [2023-11-19 05:24:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:24:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 6 states have (on average 9.333333333333334) internal successors, (56), 8 states have internal predecessors, (56), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 105 [2023-11-19 05:24:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:13,104 INFO L225 Difference]: With dead ends: 1441 [2023-11-19 05:24:13,104 INFO L226 Difference]: Without dead ends: 727 [2023-11-19 05:24:13,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 05:24:13,113 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 739 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:13,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1158 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 05:24:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-11-19 05:24:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2023-11-19 05:24:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 502 states have (on average 1.5836653386454183) internal successors, (795), 534 states have internal predecessors, (795), 181 states have call successors, (181), 43 states have call predecessors, (181), 43 states have return successors, (183), 174 states have call predecessors, (183), 177 states have call successors, (183) [2023-11-19 05:24:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1159 transitions. [2023-11-19 05:24:13,180 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1159 transitions. Word has length 105 [2023-11-19 05:24:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:13,183 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1159 transitions. [2023-11-19 05:24:13,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 6 states have (on average 9.333333333333334) internal successors, (56), 8 states have internal predecessors, (56), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-19 05:24:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1159 transitions. [2023-11-19 05:24:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 05:24:13,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:13,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:13,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:13,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e69154-9cb9-4993-bce7-5d748dd10a0f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:13,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:13,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash 726801260, now seen corresponding path program 1 times [2023-11-19 05:24:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528552667] [2023-11-19 05:24:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 05:24:15,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528552667] [2023-11-19 05:24:15,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528552667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:15,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-19 05:24:15,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548526961] [2023-11-19 05:24:15,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:15,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:24:15,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:24:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:24:15,170 INFO L87 Difference]: Start difference. First operand 727 states and 1159 transitions. Second operand has 16 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 9 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-19 05:24:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:25,156 INFO L93 Difference]: Finished difference Result 3069 states and 4955 transitions. [2023-11-19 05:24:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-19 05:24:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 9 states have call predecessors, (19), 5 states have call successors, (19) Word has length 106 [2023-11-19 05:24:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:25,183 INFO L225 Difference]: With dead ends: 3069 [2023-11-19 05:24:25,183 INFO L226 Difference]: Without dead ends: 1562 [2023-11-19 05:24:25,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 05:24:25,198 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 3019 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 11289 mSolverCounterSat, 1513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 12802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1513 IncrementalHoareTripleChecker+Valid, 11289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:25,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3019 Valid, 4267 Invalid, 12802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1513 Valid, 11289 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-19 05:24:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2023-11-19 05:24:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1474. [2023-11-19 05:24:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1025 states have (on average 1.5863414634146342) internal successors, (1626), 1086 states have internal predecessors, (1626), 366 states have call successors, (366), 81 states have call predecessors, (366), 82 states have return successors, (381), 356 states have call predecessors, (381), 362 states have call successors, (381) [2023-11-19 05:24:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2373 transitions. [2023-11-19 05:24:25,490 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2373 transitions. Word has length 106 [2023-11-19 05:24:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:25,491 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2373 transitions. [2023-11-19 05:24:25,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 9 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-19 05:24:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2373 transitions. [2023-11-19 05:24:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 05:24:25,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:25,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:24:25,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:25,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash -456165749, now seen corresponding path program 1 times [2023-11-19 05:24:25,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002364370] [2023-11-19 05:24:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:25,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 05:24:25,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002364370] [2023-11-19 05:24:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002364370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:25,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:24:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820691300] [2023-11-19 05:24:25,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:24:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:24:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:25,846 INFO L87 Difference]: Start difference. First operand 1474 states and 2373 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-19 05:24:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:28,428 INFO L93 Difference]: Finished difference Result 5317 states and 8746 transitions. [2023-11-19 05:24:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:24:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 107 [2023-11-19 05:24:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:28,471 INFO L225 Difference]: With dead ends: 5317 [2023-11-19 05:24:28,471 INFO L226 Difference]: Without dead ends: 3874 [2023-11-19 05:24:28,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:24:28,487 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1321 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:28,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 874 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 05:24:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2023-11-19 05:24:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3352. [2023-11-19 05:24:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 2411 states have (on average 1.604313562836997) internal successors, (3868), 2538 states have internal predecessors, (3868), 756 states have call successors, (756), 179 states have call predecessors, (756), 184 states have return successors, (835), 708 states have call predecessors, (835), 752 states have call successors, (835) [2023-11-19 05:24:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 5459 transitions. [2023-11-19 05:24:28,959 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 5459 transitions. Word has length 107 [2023-11-19 05:24:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:28,959 INFO L495 AbstractCegarLoop]: Abstraction has 3352 states and 5459 transitions. [2023-11-19 05:24:28,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-19 05:24:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 5459 transitions. [2023-11-19 05:24:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 05:24:28,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:28,972 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:24:28,973 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:28,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1277108893, now seen corresponding path program 1 times [2023-11-19 05:24:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734730451] [2023-11-19 05:24:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat