./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX --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 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:08:08,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:08,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:08:08,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:08,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:08,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:08,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:08,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:08,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:08,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:08,406 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:08,407 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:08,407 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:08,409 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:08:08,409 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:08,410 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:08,410 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:08:08,411 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:08:08,411 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:08,412 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:08:08,412 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:08:08,413 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:08:08,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:08,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:08:08,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:08:08,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:08,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:08:08,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:08,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:08:08,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:08,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:08:08,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:08:08,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:08:08,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:08,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:08,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:08,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:08,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:08,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:08,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:08:08,420 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:08:08,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:08:08,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:08:08,421 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:08,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:08,422 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec [2023-11-12 00:08:08,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:08,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:08,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:08,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:08,742 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:08,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2023-11-12 00:08:11,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:12,281 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:12,283 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2023-11-12 00:08:12,315 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/data/e60ec002a/ef59526cf0e343bcb1ef2bd7bea05789/FLAG48d8b5c26 [2023-11-12 00:08:12,333 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/data/e60ec002a/ef59526cf0e343bcb1ef2bd7bea05789 [2023-11-12 00:08:12,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:12,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:12,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:12,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:12,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:12,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:12" (1/1) ... [2023-11-12 00:08:12,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4c4eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:12, skipping insertion in model container [2023-11-12 00:08:12,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:12" (1/1) ... [2023-11-12 00:08:12,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:13,106 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2023-11-12 00:08:13,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:13,152 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:08:13,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-11-12 00:08:13,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [86] [2023-11-12 00:08:13,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [100] [2023-11-12 00:08:13,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [286] [2023-11-12 00:08:13,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1765] [2023-11-12 00:08:13,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1884] [2023-11-12 00:08:13,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2546] [2023-11-12 00:08:13,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2638] [2023-11-12 00:08:13,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3004] [2023-11-12 00:08:13,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3013] [2023-11-12 00:08:13,247 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2023-11-12 00:08:13,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:13,284 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:08:13,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13 WrapperNode [2023-11-12 00:08:13,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:13,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:13,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:08:13,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:08:13,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,409 INFO L138 Inliner]: procedures = 91, calls = 334, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 845 [2023-11-12 00:08:13,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:13,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:08:13,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:08:13,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:08:13,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:08:13,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:08:13,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:08:13,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:08:13,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:13,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:13,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:08:13,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b702c185-cf25-46ad-9d68-08caf4da9b60/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:08:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:08:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-12 00:08:13,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-12 00:08:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-12 00:08:13,660 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-12 00:08:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-12 00:08:13,660 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-12 00:08:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-12 00:08:13,661 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-12 00:08:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-12 00:08:13,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-12 00:08:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-12 00:08:13,662 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-12 00:08:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-12 00:08:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-12 00:08:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-12 00:08:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-12 00:08:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 00:08:13,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 00:08:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-12 00:08:13,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-12 00:08:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-12 00:08:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-12 00:08:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-12 00:08:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-12 00:08:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-12 00:08:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-12 00:08:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-12 00:08:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-12 00:08:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-12 00:08:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-12 00:08:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-12 00:08:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-12 00:08:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-12 00:08:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-12 00:08:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:08:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-12 00:08:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-12 00:08:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-12 00:08:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-12 00:08:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-12 00:08:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-12 00:08:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:08:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:08:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-12 00:08:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-12 00:08:13,874 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:08:13,878 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:08:15,116 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:08:16,154 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:08:16,154 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:08:16,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:16 BoogieIcfgContainer [2023-11-12 00:08:16,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:08:16,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:08:16,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:08:16,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:08:16,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:08:12" (1/3) ... [2023-11-12 00:08:16,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b14a7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:16, skipping insertion in model container [2023-11-12 00:08:16,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (2/3) ... [2023-11-12 00:08:16,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b14a7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:16, skipping insertion in model container [2023-11-12 00:08:16,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:16" (3/3) ... [2023-11-12 00:08:16,172 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product25.cil.c [2023-11-12 00:08:16,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:08:16,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:08:16,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:08:16,272 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@521b159, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:08:16,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:08:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-12 00:08:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-12 00:08:16,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:16,302 INFO L195 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] [2023-11-12 00:08:16,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:16,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2076716161, now seen corresponding path program 1 times [2023-11-12 00:08:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068126315] [2023-11-12 00:08:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:16,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068126315] [2023-11-12 00:08:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068126315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:16,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:08:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945717672] [2023-11-12 00:08:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:16,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:08:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:08:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:08:16,915 INFO L87 Difference]: Start difference. First operand has 347 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:08:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:17,136 INFO L93 Difference]: Finished difference Result 365 states and 586 transitions. [2023-11-12 00:08:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:08:17,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2023-11-12 00:08:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:17,170 INFO L225 Difference]: With dead ends: 365 [2023-11-12 00:08:17,170 INFO L226 Difference]: Without dead ends: 343 [2023-11-12 00:08:17,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:08:17,181 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:17,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:08:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-12 00:08:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-12 00:08:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 234 states have (on average 1.6111111111111112) internal successors, (377), 253 states have internal predecessors, (377), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-12 00:08:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 548 transitions. [2023-11-12 00:08:17,281 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 548 transitions. Word has length 51 [2023-11-12 00:08:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:17,284 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 548 transitions. [2023-11-12 00:08:17,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:08:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 548 transitions. [2023-11-12 00:08:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 00:08:17,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:17,295 INFO L195 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] [2023-11-12 00:08:17,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:08:17,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:17,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash -104268367, now seen corresponding path program 1 times [2023-11-12 00:08:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:17,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457493836] [2023-11-12 00:08:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:17,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:17,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:17,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457493836] [2023-11-12 00:08:17,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457493836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:17,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:17,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:17,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479216936] [2023-11-12 00:08:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:17,816 INFO L87 Difference]: Start difference. First operand 343 states and 548 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-12 00:08:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:20,543 INFO L93 Difference]: Finished difference Result 1160 states and 1889 transitions. [2023-11-12 00:08:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:08:20,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2023-11-12 00:08:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:20,552 INFO L225 Difference]: With dead ends: 1160 [2023-11-12 00:08:20,553 INFO L226 Difference]: Without dead ends: 833 [2023-11-12 00:08:20,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:08:20,562 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1625 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:20,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1629 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 00:08:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-12 00:08:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 784. [2023-11-12 00:08:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 555 states have (on average 1.6396396396396395) internal successors, (910), 590 states have internal predecessors, (910), 185 states have call successors, (185), 41 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-11-12 00:08:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1281 transitions. [2023-11-12 00:08:20,695 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1281 transitions. Word has length 52 [2023-11-12 00:08:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:20,696 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1281 transitions. [2023-11-12 00:08:20,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-12 00:08:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1281 transitions. [2023-11-12 00:08:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 00:08:20,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:20,700 INFO L195 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] [2023-11-12 00:08:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:08:20,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:20,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:20,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1358893200, now seen corresponding path program 1 times [2023-11-12 00:08:20,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:20,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212143637] [2023-11-12 00:08:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:20,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:21,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212143637] [2023-11-12 00:08:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212143637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:08:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904026845] [2023-11-12 00:08:21,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:21,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:08:21,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:08:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:08:21,081 INFO L87 Difference]: Start difference. First operand 784 states and 1281 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:08:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:21,312 INFO L93 Difference]: Finished difference Result 1320 states and 2163 transitions. [2023-11-12 00:08:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-11-12 00:08:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:21,324 INFO L225 Difference]: With dead ends: 1320 [2023-11-12 00:08:21,324 INFO L226 Difference]: Without dead ends: 854 [2023-11-12 00:08:21,330 INFO L412 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 [2023-11-12 00:08:21,334 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 41 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:21,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2159 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-11-12 00:08:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 796. [2023-11-12 00:08:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 564 states have (on average 1.6294326241134751) internal successors, (919), 599 states have internal predecessors, (919), 185 states have call successors, (185), 41 states have call predecessors, (185), 46 states have return successors, (192), 180 states have call predecessors, (192), 180 states have call successors, (192) [2023-11-12 00:08:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1296 transitions. [2023-11-12 00:08:21,419 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1296 transitions. Word has length 56 [2023-11-12 00:08:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:21,421 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1296 transitions. [2023-11-12 00:08:21,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:08:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1296 transitions. [2023-11-12 00:08:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 00:08:21,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:21,425 INFO L195 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] [2023-11-12 00:08:21,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:08:21,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:21,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:21,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1167067128, now seen corresponding path program 1 times [2023-11-12 00:08:21,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:21,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842676056] [2023-11-12 00:08:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:21,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:21,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842676056] [2023-11-12 00:08:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842676056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:21,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:21,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:08:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334119774] [2023-11-12 00:08:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:08:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:08:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:08:21,843 INFO L87 Difference]: Start difference. First operand 796 states and 1296 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-12 00:08:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:24,433 INFO L93 Difference]: Finished difference Result 1815 states and 2949 transitions. [2023-11-12 00:08:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:08:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 60 [2023-11-12 00:08:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:24,446 INFO L225 Difference]: With dead ends: 1815 [2023-11-12 00:08:24,447 INFO L226 Difference]: Without dead ends: 1241 [2023-11-12 00:08:24,451 INFO L412 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 [2023-11-12 00:08:24,452 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1817 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:24,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 1323 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:08:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-12 00:08:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1147. [2023-11-12 00:08:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 800 states have (on average 1.58375) internal successors, (1267), 852 states have internal predecessors, (1267), 273 states have call successors, (273), 65 states have call predecessors, (273), 73 states have return successors, (289), 266 states have call predecessors, (289), 268 states have call successors, (289) [2023-11-12 00:08:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1829 transitions. [2023-11-12 00:08:24,559 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1829 transitions. Word has length 60 [2023-11-12 00:08:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:24,559 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1829 transitions. [2023-11-12 00:08:24,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-12 00:08:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1829 transitions. [2023-11-12 00:08:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 00:08:24,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:24,562 INFO L195 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] [2023-11-12 00:08:24,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:08:24,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:24,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1484174980, now seen corresponding path program 1 times [2023-11-12 00:08:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072463810] [2023-11-12 00:08:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:24,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:24,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072463810] [2023-11-12 00:08:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072463810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:24,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:08:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012153070] [2023-11-12 00:08:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:24,773 INFO L87 Difference]: Start difference. First operand 1147 states and 1829 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-12 00:08:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:25,045 INFO L93 Difference]: Finished difference Result 2216 states and 3590 transitions. [2023-11-12 00:08:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:08:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 63 [2023-11-12 00:08:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:25,056 INFO L225 Difference]: With dead ends: 2216 [2023-11-12 00:08:25,057 INFO L226 Difference]: Without dead ends: 1147 [2023-11-12 00:08:25,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:08:25,065 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 210 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:25,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1392 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-11-12 00:08:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2023-11-12 00:08:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 800 states have (on average 1.54375) internal successors, (1235), 852 states have internal predecessors, (1235), 273 states have call successors, (273), 65 states have call predecessors, (273), 73 states have return successors, (289), 266 states have call predecessors, (289), 268 states have call successors, (289) [2023-11-12 00:08:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1797 transitions. [2023-11-12 00:08:25,158 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1797 transitions. Word has length 63 [2023-11-12 00:08:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:25,159 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1797 transitions. [2023-11-12 00:08:25,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-12 00:08:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1797 transitions. [2023-11-12 00:08:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 00:08:25,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:25,162 INFO L195 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] [2023-11-12 00:08:25,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:08:25,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:25,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1757806589, now seen corresponding path program 1 times [2023-11-12 00:08:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524337147] [2023-11-12 00:08:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:25,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:25,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524337147] [2023-11-12 00:08:25,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524337147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:25,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:25,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:25,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218927938] [2023-11-12 00:08:25,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:25,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:25,506 INFO L87 Difference]: Start difference. First operand 1147 states and 1797 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 00:08:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:27,516 INFO L93 Difference]: Finished difference Result 2203 states and 3468 transitions. [2023-11-12 00:08:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:08:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 65 [2023-11-12 00:08:27,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:27,532 INFO L225 Difference]: With dead ends: 2203 [2023-11-12 00:08:27,533 INFO L226 Difference]: Without dead ends: 1335 [2023-11-12 00:08:27,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:08:27,539 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 916 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:27,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1509 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 00:08:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2023-11-12 00:08:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1174. [2023-11-12 00:08:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 818 states have (on average 1.5366748166259168) internal successors, (1257), 874 states have internal predecessors, (1257), 274 states have call successors, (274), 70 states have call predecessors, (274), 81 states have return successors, (300), 266 states have call predecessors, (300), 269 states have call successors, (300) [2023-11-12 00:08:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1831 transitions. [2023-11-12 00:08:27,654 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1831 transitions. Word has length 65 [2023-11-12 00:08:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1831 transitions. [2023-11-12 00:08:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 00:08:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1831 transitions. [2023-11-12 00:08:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 00:08:27,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:27,660 INFO L195 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] [2023-11-12 00:08:27,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:08:27,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:27,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:27,662 INFO L85 PathProgramCache]: Analyzing trace with hash 985931779, now seen corresponding path program 1 times [2023-11-12 00:08:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398459793] [2023-11-12 00:08:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:27,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:08:28,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398459793] [2023-11-12 00:08:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398459793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:28,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:28,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:08:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286086496] [2023-11-12 00:08:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:28,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:28,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:28,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:28,011 INFO L87 Difference]: Start difference. First operand 1174 states and 1831 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-12 00:08:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:28,704 INFO L93 Difference]: Finished difference Result 1246 states and 1944 transitions. [2023-11-12 00:08:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:28,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2023-11-12 00:08:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:28,718 INFO L225 Difference]: With dead ends: 1246 [2023-11-12 00:08:28,718 INFO L226 Difference]: Without dead ends: 1231 [2023-11-12 00:08:28,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:08:28,722 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 632 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:28,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1657 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:08:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2023-11-12 00:08:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1178. [2023-11-12 00:08:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 822 states have (on average 1.5340632603406326) internal successors, (1261), 878 states have internal predecessors, (1261), 274 states have call successors, (274), 70 states have call predecessors, (274), 81 states have return successors, (300), 266 states have call predecessors, (300), 269 states have call successors, (300) [2023-11-12 00:08:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1835 transitions. [2023-11-12 00:08:28,833 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1835 transitions. Word has length 69 [2023-11-12 00:08:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:28,834 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1835 transitions. [2023-11-12 00:08:28,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-12 00:08:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1835 transitions. [2023-11-12 00:08:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 00:08:28,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:28,837 INFO L195 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] [2023-11-12 00:08:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:08:28,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:28,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1852258598, now seen corresponding path program 1 times [2023-11-12 00:08:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290075377] [2023-11-12 00:08:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:08:29,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290075377] [2023-11-12 00:08:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290075377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:29,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:29,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:29,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142045675] [2023-11-12 00:08:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:29,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:29,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:29,156 INFO L87 Difference]: Start difference. First operand 1178 states and 1835 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-12 00:08:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:29,520 INFO L93 Difference]: Finished difference Result 1197 states and 1859 transitions. [2023-11-12 00:08:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:08:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2023-11-12 00:08:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:29,534 INFO L225 Difference]: With dead ends: 1197 [2023-11-12 00:08:29,534 INFO L226 Difference]: Without dead ends: 1182 [2023-11-12 00:08:29,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:08:29,537 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 257 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:29,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 2684 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-11-12 00:08:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1178. [2023-11-12 00:08:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 822 states have (on average 1.5304136253041363) internal successors, (1258), 878 states have internal predecessors, (1258), 274 states have call successors, (274), 70 states have call predecessors, (274), 81 states have return successors, (300), 266 states have call predecessors, (300), 269 states have call successors, (300) [2023-11-12 00:08:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1832 transitions. [2023-11-12 00:08:29,632 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1832 transitions. Word has length 74 [2023-11-12 00:08:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:29,633 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1832 transitions. [2023-11-12 00:08:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-12 00:08:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1832 transitions. [2023-11-12 00:08:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 00:08:29,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:29,640 INFO L195 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] [2023-11-12 00:08:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:08:29,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:29,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2145949207, now seen corresponding path program 1 times [2023-11-12 00:08:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954888022] [2023-11-12 00:08:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:08:29,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954888022] [2023-11-12 00:08:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954888022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:29,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:08:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708350357] [2023-11-12 00:08:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:29,894 INFO L87 Difference]: Start difference. First operand 1178 states and 1832 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:08:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:31,610 INFO L93 Difference]: Finished difference Result 3783 states and 5989 transitions. [2023-11-12 00:08:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 81 [2023-11-12 00:08:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:31,637 INFO L225 Difference]: With dead ends: 3783 [2023-11-12 00:08:31,637 INFO L226 Difference]: Without dead ends: 2621 [2023-11-12 00:08:31,645 INFO L412 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 [2023-11-12 00:08:31,646 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1074 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:31,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 645 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 00:08:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2023-11-12 00:08:31,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2374. [2023-11-12 00:08:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 1688 states have (on average 1.5408767772511849) internal successors, (2601), 1799 states have internal predecessors, (2601), 526 states have call successors, (526), 129 states have call predecessors, (526), 159 states have return successors, (603), 498 states have call predecessors, (603), 521 states have call successors, (603) [2023-11-12 00:08:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3730 transitions. [2023-11-12 00:08:31,867 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3730 transitions. Word has length 81 [2023-11-12 00:08:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 2374 states and 3730 transitions. [2023-11-12 00:08:31,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:08:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3730 transitions. [2023-11-12 00:08:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-12 00:08:31,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:31,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:31,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:08:31,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:31,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash 318630691, now seen corresponding path program 1 times [2023-11-12 00:08:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:31,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160998843] [2023-11-12 00:08:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:31,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:08:32,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:32,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160998843] [2023-11-12 00:08:32,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160998843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:32,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:32,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:08:32,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797660321] [2023-11-12 00:08:32,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:32,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:32,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:32,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:32,166 INFO L87 Difference]: Start difference. First operand 2374 states and 3730 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:08:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:34,002 INFO L93 Difference]: Finished difference Result 7279 states and 11631 transitions. [2023-11-12 00:08:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 85 [2023-11-12 00:08:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:34,044 INFO L225 Difference]: With dead ends: 7279 [2023-11-12 00:08:34,044 INFO L226 Difference]: Without dead ends: 4924 [2023-11-12 00:08:34,059 INFO L412 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 [2023-11-12 00:08:34,060 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1055 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:34,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 658 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:08:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2023-11-12 00:08:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4608. [2023-11-12 00:08:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 3307 states have (on average 1.5439975808890234) internal successors, (5106), 3540 states have internal predecessors, (5106), 979 states have call successors, (979), 247 states have call predecessors, (979), 321 states have return successors, (1205), 911 states have call predecessors, (1205), 974 states have call successors, (1205) [2023-11-12 00:08:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7290 transitions. [2023-11-12 00:08:34,632 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7290 transitions. Word has length 85 [2023-11-12 00:08:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:34,633 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 7290 transitions. [2023-11-12 00:08:34,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:08:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7290 transitions. [2023-11-12 00:08:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-12 00:08:34,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:34,637 INFO L195 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] [2023-11-12 00:08:34,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:08:34,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:34,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash 659442009, now seen corresponding path program 1 times [2023-11-12 00:08:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:34,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653010920] [2023-11-12 00:08:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:08:34,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653010920] [2023-11-12 00:08:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653010920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:34,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:34,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:08:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870824829] [2023-11-12 00:08:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:34,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:34,846 INFO L87 Difference]: Start difference. First operand 4608 states and 7290 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:08:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:37,146 INFO L93 Difference]: Finished difference Result 14041 states and 22771 transitions. [2023-11-12 00:08:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2023-11-12 00:08:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:37,240 INFO L225 Difference]: With dead ends: 14041 [2023-11-12 00:08:37,240 INFO L226 Difference]: Without dead ends: 9458 [2023-11-12 00:08:37,270 INFO L412 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 [2023-11-12 00:08:37,271 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1048 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:37,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 671 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:08:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9458 states. [2023-11-12 00:08:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9458 to 8990. [2023-11-12 00:08:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8990 states, 6474 states have (on average 1.5410874266295953) internal successors, (9977), 6963 states have internal predecessors, (9977), 1858 states have call successors, (1858), 483 states have call predecessors, (1858), 657 states have return successors, (2544), 1710 states have call predecessors, (2544), 1853 states have call successors, (2544) [2023-11-12 00:08:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 14379 transitions. [2023-11-12 00:08:38,365 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 14379 transitions. Word has length 83 [2023-11-12 00:08:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:38,366 INFO L495 AbstractCegarLoop]: Abstraction has 8990 states and 14379 transitions. [2023-11-12 00:08:38,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:08:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 14379 transitions. [2023-11-12 00:08:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-12 00:08:38,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:38,372 INFO L195 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] [2023-11-12 00:08:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:08:38,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1032546631, now seen corresponding path program 1 times [2023-11-12 00:08:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99472239] [2023-11-12 00:08:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:08:38,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99472239] [2023-11-12 00:08:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99472239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:08:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487571355] [2023-11-12 00:08:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:38,648 INFO L87 Difference]: Start difference. First operand 8990 states and 14379 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:08:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:41,621 INFO L93 Difference]: Finished difference Result 27335 states and 45579 transitions. [2023-11-12 00:08:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2023-11-12 00:08:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:41,774 INFO L225 Difference]: With dead ends: 27335 [2023-11-12 00:08:41,774 INFO L226 Difference]: Without dead ends: 18382 [2023-11-12 00:08:41,830 INFO L412 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 [2023-11-12 00:08:41,831 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1035 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:41,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 681 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 00:08:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18382 states. [2023-11-12 00:08:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18382 to 17596. [2023-11-12 00:08:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17596 states, 12677 states have (on average 1.5350635008282716) internal successors, (19460), 13702 states have internal predecessors, (19460), 3565 states have call successors, (3565), 955 states have call predecessors, (3565), 1353 states have return successors, (5735), 3257 states have call predecessors, (5735), 3560 states have call successors, (5735) [2023-11-12 00:08:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17596 states to 17596 states and 28760 transitions. [2023-11-12 00:08:44,088 INFO L78 Accepts]: Start accepts. Automaton has 17596 states and 28760 transitions. Word has length 84 [2023-11-12 00:08:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:44,089 INFO L495 AbstractCegarLoop]: Abstraction has 17596 states and 28760 transitions. [2023-11-12 00:08:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:08:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17596 states and 28760 transitions. [2023-11-12 00:08:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 00:08:44,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:44,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:44,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:08:44,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:44,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 35898671, now seen corresponding path program 1 times [2023-11-12 00:08:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819354946] [2023-11-12 00:08:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:44,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:08:44,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:44,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819354946] [2023-11-12 00:08:44,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819354946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:08:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015570471] [2023-11-12 00:08:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:44,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:44,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:44,303 INFO L87 Difference]: Start difference. First operand 17596 states and 28760 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:08:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:48,588 INFO L93 Difference]: Finished difference Result 53615 states and 94143 transitions. [2023-11-12 00:08:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 88 [2023-11-12 00:08:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:48,980 INFO L225 Difference]: With dead ends: 53615 [2023-11-12 00:08:48,981 INFO L226 Difference]: Without dead ends: 36070 [2023-11-12 00:08:49,065 INFO L412 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 [2023-11-12 00:08:49,066 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1021 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:49,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 696 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:08:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36070 states.