./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E --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 b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:32:06,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:32:06,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:32:06,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:32:06,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:32:06,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:32:06,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:32:06,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:32:06,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:32:06,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:32:06,504 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:32:06,505 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:32:06,505 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:32:06,505 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:32:06,506 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:32:06,506 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:32:06,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:32:06,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:32:06,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:32:06,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:32:06,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:32:06,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:32:06,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:32:06,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:32:06,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:32:06,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:32:06,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:06,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:32:06,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:32:06,510 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E 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 -> b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd [2024-11-14 04:32:06,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:32:06,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:32:06,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:32:06,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:32:06,875 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:32:06,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c Unable to find full path for "g++" [2024-11-14 04:32:08,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:32:09,199 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:32:09,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2024-11-14 04:32:09,238 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/data/039576baf/975429e906d7424481f5f2b077c991bb/FLAG0618a568a [2024-11-14 04:32:09,265 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/data/039576baf/975429e906d7424481f5f2b077c991bb [2024-11-14 04:32:09,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:32:09,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:32:09,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:09,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:32:09,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:32:09,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:09" (1/1) ... [2024-11-14 04:32:09,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a655f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:09, skipping insertion in model container [2024-11-14 04:32:09,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:09" (1/1) ... [2024-11-14 04:32:09,349 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:32:09,964 WARN L250 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_25176b16-ef41-4ceb-b55f-2f99e6473303/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2024-11-14 04:32:10,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:10,119 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:32:10,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-14 04:32:10,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2024-11-14 04:32:10,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [452] [2024-11-14 04:32:10,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1120] [2024-11-14 04:32:10,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1220] [2024-11-14 04:32:10,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1574] [2024-11-14 04:32:10,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1586] [2024-11-14 04:32:10,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [1706] [2024-11-14 04:32:10,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1890] [2024-11-14 04:32:10,134 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1899] [2024-11-14 04:32:10,217 WARN L250 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_25176b16-ef41-4ceb-b55f-2f99e6473303/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2024-11-14 04:32:10,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:10,333 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:32:10,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10 WrapperNode [2024-11-14 04:32:10,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:10,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:10,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:32:10,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:32:10,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,455 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 859 [2024-11-14 04:32:10,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:10,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:32:10,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:32:10,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:32:10,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:32:10,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:32:10,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:32:10,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:32:10,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (1/1) ... [2024-11-14 04:32:10,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:10,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:32:10,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:32:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:32:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-14 04:32:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-14 04:32:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-14 04:32:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-14 04:32:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-14 04:32:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-14 04:32:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-14 04:32:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-14 04:32:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-14 04:32:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-14 04:32:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 04:32:10,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 04:32:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 04:32:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 04:32:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-14 04:32:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-14 04:32:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-14 04:32:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-14 04:32:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-14 04:32:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-14 04:32:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-14 04:32:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-14 04:32:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-14 04:32:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-14 04:32:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-14 04:32:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-14 04:32:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-14 04:32:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-14 04:32:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-14 04:32:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-14 04:32:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-14 04:32:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-14 04:32:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-14 04:32:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-14 04:32:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-14 04:32:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-14 04:32:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:32:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-14 04:32:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-14 04:32:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-14 04:32:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-14 04:32:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-14 04:32:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-14 04:32:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-14 04:32:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-14 04:32:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-14 04:32:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-14 04:32:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:32:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:32:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-14 04:32:10,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-14 04:32:10,916 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:32:10,918 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:32:12,570 INFO L? ?]: Removed 448 outVars from TransFormulas that were not future-live. [2024-11-14 04:32:12,570 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:32:13,797 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:32:13,798 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:32:13,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:13 BoogieIcfgContainer [2024-11-14 04:32:13,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:32:13,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:32:13,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:32:13,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:32:13,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:32:09" (1/3) ... [2024-11-14 04:32:13,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb9275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:13, skipping insertion in model container [2024-11-14 04:32:13,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:10" (2/3) ... [2024-11-14 04:32:13,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb9275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:13, skipping insertion in model container [2024-11-14 04:32:13,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:13" (3/3) ... [2024-11-14 04:32:13,810 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2024-11-14 04:32:13,829 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:32:13,832 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product21.cil.c that has 25 procedures, 374 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:32:13,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:32:13,924 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;@24d04b05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:32:13,925 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:32:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 253 states have (on average 1.5968379446640317) internal successors, (404), 274 states have internal predecessors, (404), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-14 04:32:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 04:32:13,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:13,969 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:13,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:13,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash 821588810, now seen corresponding path program 1 times [2024-11-14 04:32:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707237729] [2024-11-14 04:32:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:32:15,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:15,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707237729] [2024-11-14 04:32:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707237729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:15,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:32:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989196574] [2024-11-14 04:32:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:15,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:32:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:32:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:32:15,280 INFO L87 Difference]: Start difference. First operand has 374 states, 253 states have (on average 1.5968379446640317) internal successors, (404), 274 states have internal predecessors, (404), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 04:32:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:15,715 INFO L93 Difference]: Finished difference Result 734 states and 1176 transitions. [2024-11-14 04:32:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2024-11-14 04:32:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:15,733 INFO L225 Difference]: With dead ends: 734 [2024-11-14 04:32:15,736 INFO L226 Difference]: Without dead ends: 373 [2024-11-14 04:32:15,747 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 [2024-11-14 04:32:15,751 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 0 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:15,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2183 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:32:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-14 04:32:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2024-11-14 04:32:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 254 states have (on average 1.578740157480315) internal successors, (401), 273 states have internal predecessors, (401), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-14 04:32:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 586 transitions. [2024-11-14 04:32:15,872 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 586 transitions. Word has length 65 [2024-11-14 04:32:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:15,874 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 586 transitions. [2024-11-14 04:32:15,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 04:32:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 586 transitions. [2024-11-14 04:32:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 04:32:15,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:15,881 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:15,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:32:15,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:15,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 705570618, now seen corresponding path program 1 times [2024-11-14 04:32:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:15,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862678250] [2024-11-14 04:32:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:32:16,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862678250] [2024-11-14 04:32:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862678250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:16,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:16,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:32:16,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980239353] [2024-11-14 04:32:16,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:16,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:32:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:16,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:32:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:32:16,713 INFO L87 Difference]: Start difference. First operand 373 states and 586 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-14 04:32:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:21,333 INFO L93 Difference]: Finished difference Result 1280 states and 2045 transitions. [2024-11-14 04:32:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 04:32:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 68 [2024-11-14 04:32:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:21,354 INFO L225 Difference]: With dead ends: 1280 [2024-11-14 04:32:21,354 INFO L226 Difference]: Without dead ends: 923 [2024-11-14 04:32:21,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:32:21,360 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 1478 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 4316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:21,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2473 Invalid, 4316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [510 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-14 04:32:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-14 04:32:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 867. [2024-11-14 04:32:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 611 states have (on average 1.5973813420621932) internal successors, (976), 642 states have internal predecessors, (976), 203 states have call successors, (203), 48 states have call predecessors, (203), 52 states have return successors, (210), 201 states have call predecessors, (210), 198 states have call successors, (210) [2024-11-14 04:32:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1389 transitions. [2024-11-14 04:32:21,528 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1389 transitions. Word has length 68 [2024-11-14 04:32:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:21,529 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1389 transitions. [2024-11-14 04:32:21,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-14 04:32:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1389 transitions. [2024-11-14 04:32:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 04:32:21,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:21,540 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:21,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:32:21,541 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:21,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1158199637, now seen corresponding path program 1 times [2024-11-14 04:32:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:21,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115749095] [2024-11-14 04:32:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:32:22,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115749095] [2024-11-14 04:32:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115749095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:22,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:32:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730188271] [2024-11-14 04:32:22,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:22,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:32:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:32:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:22,083 INFO L87 Difference]: Start difference. First operand 867 states and 1389 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-14 04:32:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:22,416 INFO L93 Difference]: Finished difference Result 1412 states and 2265 transitions. [2024-11-14 04:32:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:32:22,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2024-11-14 04:32:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:22,426 INFO L225 Difference]: With dead ends: 1412 [2024-11-14 04:32:22,426 INFO L226 Difference]: Without dead ends: 898 [2024-11-14 04:32:22,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:22,430 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 0 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:22,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3271 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:32:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-11-14 04:32:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 888. [2024-11-14 04:32:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 626 states have (on average 1.5830670926517572) internal successors, (991), 657 states have internal predecessors, (991), 203 states have call successors, (203), 48 states have call predecessors, (203), 58 states have return successors, (225), 207 states have call predecessors, (225), 198 states have call successors, (225) [2024-11-14 04:32:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1419 transitions. [2024-11-14 04:32:22,542 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1419 transitions. Word has length 72 [2024-11-14 04:32:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:22,542 INFO L471 AbstractCegarLoop]: Abstraction has 888 states and 1419 transitions. [2024-11-14 04:32:22,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-14 04:32:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1419 transitions. [2024-11-14 04:32:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 04:32:22,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:22,551 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:22,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:32:22,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:22,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1816208649, now seen corresponding path program 1 times [2024-11-14 04:32:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:22,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693076551] [2024-11-14 04:32:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:32:24,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:24,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693076551] [2024-11-14 04:32:24,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693076551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:24,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:24,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:32:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048435070] [2024-11-14 04:32:24,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:24,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:32:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:32:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:24,068 INFO L87 Difference]: Start difference. First operand 888 states and 1419 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-14 04:32:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:28,606 INFO L93 Difference]: Finished difference Result 3660 states and 5934 transitions. [2024-11-14 04:32:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:32:28,607 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), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 73 [2024-11-14 04:32:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:28,634 INFO L225 Difference]: With dead ends: 3660 [2024-11-14 04:32:28,634 INFO L226 Difference]: Without dead ends: 2789 [2024-11-14 04:32:28,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:32:28,641 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 2557 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 1151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:28,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2632 Valid, 1397 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1151 Valid, 2327 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-14 04:32:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2024-11-14 04:32:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2565. [2024-11-14 04:32:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 1839 states have (on average 1.5818379554105493) internal successors, (2909), 1930 states have internal predecessors, (2909), 563 states have call successors, (563), 128 states have call predecessors, (563), 162 states have return successors, (653), 567 states have call predecessors, (653), 558 states have call successors, (653) [2024-11-14 04:32:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4125 transitions. [2024-11-14 04:32:29,006 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4125 transitions. Word has length 73 [2024-11-14 04:32:29,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:29,007 INFO L471 AbstractCegarLoop]: Abstraction has 2565 states and 4125 transitions. [2024-11-14 04:32:29,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-14 04:32:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4125 transitions. [2024-11-14 04:32:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 04:32:29,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:29,012 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:29,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:32:29,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:29,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash 306817239, now seen corresponding path program 1 times [2024-11-14 04:32:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382560014] [2024-11-14 04:32:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:32:29,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382560014] [2024-11-14 04:32:29,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382560014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:29,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:29,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:32:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384229502] [2024-11-14 04:32:29,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:29,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:32:29,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:32:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:29,326 INFO L87 Difference]: Start difference. First operand 2565 states and 4125 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-14 04:32:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:29,836 INFO L93 Difference]: Finished difference Result 4216 states and 6768 transitions. [2024-11-14 04:32:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:32:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2024-11-14 04:32:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:29,860 INFO L225 Difference]: With dead ends: 4216 [2024-11-14 04:32:29,861 INFO L226 Difference]: Without dead ends: 2640 [2024-11-14 04:32:29,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:29,869 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 0 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:29,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3271 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:32:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2024-11-14 04:32:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2584. [2024-11-14 04:32:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 1854 states have (on average 1.5771305285868393) internal successors, (2924), 1938 states have internal predecessors, (2924), 563 states have call successors, (563), 128 states have call predecessors, (563), 166 states have return successors, (661), 578 states have call predecessors, (661), 558 states have call successors, (661) [2024-11-14 04:32:30,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4148 transitions. [2024-11-14 04:32:30,195 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4148 transitions. Word has length 73 [2024-11-14 04:32:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:30,196 INFO L471 AbstractCegarLoop]: Abstraction has 2584 states and 4148 transitions. [2024-11-14 04:32:30,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-14 04:32:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4148 transitions. [2024-11-14 04:32:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:32:30,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:30,199 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:30,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:32:30,200 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:30,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2141530935, now seen corresponding path program 1 times [2024-11-14 04:32:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:30,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077381811] [2024-11-14 04:32:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:30,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:32:30,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077381811] [2024-11-14 04:32:30,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077381811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:30,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:30,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:32:30,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672754978] [2024-11-14 04:32:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:30,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:32:30,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:32:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:32:30,601 INFO L87 Difference]: Start difference. First operand 2584 states and 4148 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:32:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:33,899 INFO L93 Difference]: Finished difference Result 5882 states and 9499 transitions. [2024-11-14 04:32:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:32:33,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 79 [2024-11-14 04:32:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:33,933 INFO L225 Difference]: With dead ends: 5882 [2024-11-14 04:32:33,933 INFO L226 Difference]: Without dead ends: 3936 [2024-11-14 04:32:33,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:32:33,946 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 1944 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:33,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 1414 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 04:32:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2024-11-14 04:32:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3760. [2024-11-14 04:32:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2650 states have (on average 1.5350943396226415) internal successors, (4068), 2783 states have internal predecessors, (4068), 847 states have call successors, (847), 210 states have call predecessors, (847), 262 states have return successors, (1015), 857 states have call predecessors, (1015), 842 states have call successors, (1015) [2024-11-14 04:32:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5930 transitions. [2024-11-14 04:32:34,415 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5930 transitions. Word has length 79 [2024-11-14 04:32:34,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:34,417 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 5930 transitions. [2024-11-14 04:32:34,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:32:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5930 transitions. [2024-11-14 04:32:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:32:34,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:34,422 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:34,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:32:34,424 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:34,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1245726722, now seen corresponding path program 1 times [2024-11-14 04:32:34,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:34,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776402846] [2024-11-14 04:32:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:32:34,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:34,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776402846] [2024-11-14 04:32:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776402846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:34,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:34,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:32:34,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749936465] [2024-11-14 04:32:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:34,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:32:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:32:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:34,720 INFO L87 Difference]: Start difference. First operand 3760 states and 5930 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 04:32:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:37,502 INFO L93 Difference]: Finished difference Result 7161 states and 11357 transitions. [2024-11-14 04:32:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:32:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 81 [2024-11-14 04:32:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:37,544 INFO L225 Difference]: With dead ends: 7161 [2024-11-14 04:32:37,544 INFO L226 Difference]: Without dead ends: 4266 [2024-11-14 04:32:37,563 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 [2024-11-14 04:32:37,564 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 991 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:37,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1606 Invalid, 2594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 04:32:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2024-11-14 04:32:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3841. [2024-11-14 04:32:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 2704 states have (on average 1.5288461538461537) internal successors, (4134), 2849 states have internal predecessors, (4134), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 857 states have call predecessors, (1049), 845 states have call successors, (1049) [2024-11-14 04:32:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 6033 transitions. [2024-11-14 04:32:38,153 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 6033 transitions. Word has length 81 [2024-11-14 04:32:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:38,154 INFO L471 AbstractCegarLoop]: Abstraction has 3841 states and 6033 transitions. [2024-11-14 04:32:38,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 04:32:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 6033 transitions. [2024-11-14 04:32:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 04:32:38,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:38,157 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:38,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:32:38,157 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:38,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash 861005061, now seen corresponding path program 1 times [2024-11-14 04:32:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054342362] [2024-11-14 04:32:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:38,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:32:38,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:38,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054342362] [2024-11-14 04:32:38,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054342362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:38,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:38,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:32:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304020955] [2024-11-14 04:32:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:38,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:32:38,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:32:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:32:38,422 INFO L87 Difference]: Start difference. First operand 3841 states and 6033 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 04:32:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:39,371 INFO L93 Difference]: Finished difference Result 3945 states and 6195 transitions. [2024-11-14 04:32:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:39,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2024-11-14 04:32:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:39,400 INFO L225 Difference]: With dead ends: 3945 [2024-11-14 04:32:39,400 INFO L226 Difference]: Without dead ends: 3930 [2024-11-14 04:32:39,403 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 [2024-11-14 04:32:39,403 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 647 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:39,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1468 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:32:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2024-11-14 04:32:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3847. [2024-11-14 04:32:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 2710 states have (on average 1.5276752767527675) internal successors, (4140), 2855 states have internal predecessors, (4140), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 857 states have call predecessors, (1049), 845 states have call successors, (1049) [2024-11-14 04:32:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 6039 transitions. [2024-11-14 04:32:39,919 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 6039 transitions. Word has length 86 [2024-11-14 04:32:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:39,920 INFO L471 AbstractCegarLoop]: Abstraction has 3847 states and 6039 transitions. [2024-11-14 04:32:39,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 04:32:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 6039 transitions. [2024-11-14 04:32:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-14 04:32:39,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:39,923 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:39,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:32:39,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:39,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1837415285, now seen corresponding path program 1 times [2024-11-14 04:32:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490515416] [2024-11-14 04:32:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:39,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:32:40,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:40,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490515416] [2024-11-14 04:32:40,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490515416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:40,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:40,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:32:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525998143] [2024-11-14 04:32:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:40,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:32:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:32:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:32:40,229 INFO L87 Difference]: Start difference. First operand 3847 states and 6039 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-14 04:32:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:41,211 INFO L93 Difference]: Finished difference Result 7324 states and 11660 transitions. [2024-11-14 04:32:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:32:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 91 [2024-11-14 04:32:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:41,253 INFO L225 Difference]: With dead ends: 7324 [2024-11-14 04:32:41,253 INFO L226 Difference]: Without dead ends: 4119 [2024-11-14 04:32:41,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:32:41,278 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 318 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:41,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 4005 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:32:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2024-11-14 04:32:41,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 4063. [2024-11-14 04:32:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 2906 states have (on average 1.503785271851342) internal successors, (4370), 3061 states have internal predecessors, (4370), 855 states have call successors, (855), 230 states have call predecessors, (855), 301 states have return successors, (1066), 862 states have call predecessors, (1066), 850 states have call successors, (1066) [2024-11-14 04:32:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 6291 transitions. [2024-11-14 04:32:41,940 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 6291 transitions. Word has length 91 [2024-11-14 04:32:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:41,941 INFO L471 AbstractCegarLoop]: Abstraction has 4063 states and 6291 transitions. [2024-11-14 04:32:41,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-14 04:32:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 6291 transitions. [2024-11-14 04:32:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-14 04:32:41,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:41,947 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:41,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:32:41,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:41,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2070464969, now seen corresponding path program 1 times [2024-11-14 04:32:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:41,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427400918] [2024-11-14 04:32:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:41,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:32:42,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:42,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427400918] [2024-11-14 04:32:42,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427400918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:42,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:42,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:32:42,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585465511] [2024-11-14 04:32:42,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:42,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:32:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:32:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:32:42,160 INFO L87 Difference]: Start difference. First operand 4063 states and 6291 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 04:32:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:44,738 INFO L93 Difference]: Finished difference Result 11490 states and 18069 transitions. [2024-11-14 04:32:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 97 [2024-11-14 04:32:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:44,797 INFO L225 Difference]: With dead ends: 11490 [2024-11-14 04:32:44,797 INFO L226 Difference]: Without dead ends: 7446 [2024-11-14 04:32:44,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:32:44,816 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 1155 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:44,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 680 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 04:32:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2024-11-14 04:32:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 6996. [2024-11-14 04:32:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6996 states, 5054 states have (on average 1.514839730906213) internal successors, (7656), 5324 states have internal predecessors, (7656), 1427 states have call successors, (1427), 373 states have call predecessors, (1427), 514 states have return successors, (1865), 1420 states have call predecessors, (1865), 1422 states have call successors, (1865) [2024-11-14 04:32:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 10948 transitions. [2024-11-14 04:32:45,730 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 10948 transitions. Word has length 97 [2024-11-14 04:32:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:45,731 INFO L471 AbstractCegarLoop]: Abstraction has 6996 states and 10948 transitions. [2024-11-14 04:32:45,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 04:32:45,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 10948 transitions. [2024-11-14 04:32:45,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 04:32:45,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:45,736 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:45,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:32:45,736 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:45,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1937726409, now seen corresponding path program 1 times [2024-11-14 04:32:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:45,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693231627] [2024-11-14 04:32:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:32:47,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693231627] [2024-11-14 04:32:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693231627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:32:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683200746] [2024-11-14 04:32:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:47,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:47,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:32:47,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:32:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:47,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:32:47,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:32:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:32:48,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:32:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683200746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:32:48,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [19] total 24 [2024-11-14 04:32:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422853808] [2024-11-14 04:32:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:48,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:32:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:32:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:32:48,577 INFO L87 Difference]: Start difference. First operand 6996 states and 10948 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 04:32:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:51,535 INFO L93 Difference]: Finished difference Result 15236 states and 23792 transitions. [2024-11-14 04:32:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 99 [2024-11-14 04:32:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:51,589 INFO L225 Difference]: With dead ends: 15236 [2024-11-14 04:32:51,590 INFO L226 Difference]: Without dead ends: 8256 [2024-11-14 04:32:51,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2024-11-14 04:32:51,617 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 711 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:51,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1567 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 04:32:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8256 states. [2024-11-14 04:32:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8256 to 8206. [2024-11-14 04:32:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8206 states, 5920 states have (on average 1.5055743243243243) internal successors, (8913), 6218 states have internal predecessors, (8913), 1683 states have call successors, (1683), 446 states have call predecessors, (1683), 602 states have return successors, (2177), 1664 states have call predecessors, (2177), 1678 states have call successors, (2177) [2024-11-14 04:32:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8206 states to 8206 states and 12773 transitions. [2024-11-14 04:32:52,557 INFO L78 Accepts]: Start accepts. Automaton has 8206 states and 12773 transitions. Word has length 99 [2024-11-14 04:32:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:52,557 INFO L471 AbstractCegarLoop]: Abstraction has 8206 states and 12773 transitions. [2024-11-14 04:32:52,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 04:32:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8206 states and 12773 transitions. [2024-11-14 04:32:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-14 04:32:52,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:52,562 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:32:52,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:32:52,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:52,763 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:52,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1797337801, now seen corresponding path program 1 times [2024-11-14 04:32:52,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:52,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544694795] [2024-11-14 04:32:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:52,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:32:53,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544694795] [2024-11-14 04:32:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544694795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:32:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137369105] [2024-11-14 04:32:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:53,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:53,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:53,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:32:53,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:32:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:53,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:32:53,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:32:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:32:53,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:32:53,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137369105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:53,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:32:53,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-11-14 04:32:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174432343] [2024-11-14 04:32:53,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:53,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:32:53,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:32:53,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:32:53,826 INFO L87 Difference]: Start difference. First operand 8206 states and 12773 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-14 04:32:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:54,684 INFO L93 Difference]: Finished difference Result 8257 states and 12843 transitions. [2024-11-14 04:32:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:32:54,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 101 [2024-11-14 04:32:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:54,739 INFO L225 Difference]: With dead ends: 8257 [2024-11-14 04:32:54,739 INFO L226 Difference]: Without dead ends: 8238 [2024-11-14 04:32:54,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:32:54,746 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 0 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:54,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1628 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:32:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8238 states. [2024-11-14 04:32:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8238 to 8238. [2024-11-14 04:32:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8238 states, 5952 states have (on average 1.5025201612903225) internal successors, (8943), 6250 states have internal predecessors, (8943), 1683 states have call successors, (1683), 446 states have call predecessors, (1683), 602 states have return successors, (2177), 1664 states have call predecessors, (2177), 1678 states have call successors, (2177) [2024-11-14 04:32:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8238 states to 8238 states and 12803 transitions. [2024-11-14 04:32:55,514 INFO L78 Accepts]: Start accepts. Automaton has 8238 states and 12803 transitions. Word has length 101 [2024-11-14 04:32:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:55,515 INFO L471 AbstractCegarLoop]: Abstraction has 8238 states and 12803 transitions. [2024-11-14 04:32:55,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-14 04:32:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8238 states and 12803 transitions. [2024-11-14 04:32:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-14 04:32:55,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:55,520 INFO L215 NwaCegarLoop]: trace histogram [7, 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] [2024-11-14 04:32:55,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:32:55,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25176b16-ef41-4ceb-b55f-2f99e6473303/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:55,724 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:55,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1835738710, now seen corresponding path program 1 times [2024-11-14 04:32:55,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:55,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985334336] [2024-11-14 04:32:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:32:55,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985334336] [2024-11-14 04:32:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985334336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:55,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:32:55,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488017772] [2024-11-14 04:32:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:55,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:32:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:32:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:32:55,941 INFO L87 Difference]: Start difference. First operand 8238 states and 12803 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 04:32:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:58,913 INFO L93 Difference]: Finished difference Result 22472 states and 35504 transitions. [2024-11-14 04:32:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2024-11-14 04:32:58,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:59,000 INFO L225 Difference]: With dead ends: 22472 [2024-11-14 04:32:59,000 INFO L226 Difference]: Without dead ends: 14256 [2024-11-14 04:32:59,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:32:59,031 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 1122 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:59,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 698 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:32:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14256 states. [2024-11-14 04:33:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14256 to 13687. [2024-11-14 04:33:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13687 states, 9952 states have (on average 1.5094453376205788) internal successors, (15022), 10508 states have internal predecessors, (15022), 2691 states have call successors, (2691), 732 states have call predecessors, (2691), 1043 states have return successors, (3772), 2644 states have call predecessors, (3772), 2686 states have call successors, (3772) [2024-11-14 04:33:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13687 states to 13687 states and 21485 transitions. [2024-11-14 04:33:00,388 INFO L78 Accepts]: Start accepts. Automaton has 13687 states and 21485 transitions. Word has length 124 [2024-11-14 04:33:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:33:00,389 INFO L471 AbstractCegarLoop]: Abstraction has 13687 states and 21485 transitions. [2024-11-14 04:33:00,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 04:33:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13687 states and 21485 transitions. [2024-11-14 04:33:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-14 04:33:00,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:33:00,394 INFO L215 NwaCegarLoop]: trace histogram [7, 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] [2024-11-14 04:33:00,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 04:33:00,394 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:33:00,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:33:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 349418728, now seen corresponding path program 1 times [2024-11-14 04:33:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:33:00,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838542474] [2024-11-14 04:33:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:33:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:33:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:33:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:33:00,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:33:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838542474] [2024-11-14 04:33:00,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838542474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:33:00,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:33:00,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:33:00,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803777189] [2024-11-14 04:33:00,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:33:00,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:33:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:33:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:33:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:33:00,611 INFO L87 Difference]: Start difference. First operand 13687 states and 21485 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 04:33:04,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:33:04,425 INFO L93 Difference]: Finished difference Result 38963 states and 62757 transitions. [2024-11-14 04:33:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:33:04,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2024-11-14 04:33:04,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:33:04,571 INFO L225 Difference]: With dead ends: 38963 [2024-11-14 04:33:04,571 INFO L226 Difference]: Without dead ends: 25304 [2024-11-14 04:33:04,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:33:04,628 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 1109 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:33:04,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 711 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 04:33:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25304 states. [2024-11-14 04:33:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25304 to 24469. [2024-11-14 04:33:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24469 states, 17851 states have (on average 1.5112318637611337) internal successors, (26977), 18943 states have internal predecessors, (26977), 4670 states have call successors, (4670), 1304 states have call predecessors, (4670), 1947 states have return successors, (7335), 4567 states have call predecessors, (7335), 4665 states have call successors, (7335) [2024-11-14 04:33:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24469 states to 24469 states and 38982 transitions. [2024-11-14 04:33:07,167 INFO L78 Accepts]: Start accepts. Automaton has 24469 states and 38982 transitions. Word has length 124 [2024-11-14 04:33:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:33:07,167 INFO L471 AbstractCegarLoop]: Abstraction has 24469 states and 38982 transitions. [2024-11-14 04:33:07,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 04:33:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 24469 states and 38982 transitions. [2024-11-14 04:33:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 04:33:07,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:33:07,173 INFO L215 NwaCegarLoop]: trace histogram [7, 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] [2024-11-14 04:33:07,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 04:33:07,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:33:07,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:33:07,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2053050088, now seen corresponding path program 1 times [2024-11-14 04:33:07,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:33:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097131504] [2024-11-14 04:33:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:33:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:33:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:33:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:33:07,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:33:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097131504] [2024-11-14 04:33:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097131504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:33:07,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:33:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:33:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217645410] [2024-11-14 04:33:07,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:33:07,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:33:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:33:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:33:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:33:07,387 INFO L87 Difference]: Start difference. First operand 24469 states and 38982 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 04:33:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:33:14,049 INFO L93 Difference]: Finished difference Result 71613 states and 119065 transitions. [2024-11-14 04:33:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:33:14,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 125 [2024-11-14 04:33:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:33:14,359 INFO L225 Difference]: With dead ends: 71613 [2024-11-14 04:33:14,359 INFO L226 Difference]: Without dead ends: 47184 [2024-11-14 04:33:14,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:33:14,471 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 1096 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:33:14,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 721 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:33:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47184 states.