./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje --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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:36:31,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:36:31,568 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:36:31,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:36:31,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:36:31,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:36:31,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:36:31,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:36:31,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:36:31,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:36:31,615 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:36:31,616 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:36:31,616 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:36:31,617 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:36:31,617 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:36:31,617 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:36:31,618 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:36:31,618 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:36:31,618 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:36:31,619 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:36:31,619 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:36:31,623 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:36:31,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:36:31,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:36:31,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:36:31,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:36:31,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:36:31,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:36:31,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:36:31,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:36:31,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:36:31,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:36:31,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:36:31,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:36:31,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:36:31,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:36:31,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:36:31,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:36:31,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:36:31,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:36:31,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:36:31,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:36:31,636 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:36:31,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:36:31,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:36:31,637 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:36:31,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:36:31,638 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_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2024-11-09 05:36:31,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:36:31,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:36:31,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:36:31,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:36:31,946 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:36:31,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c Unable to find full path for "g++" [2024-11-09 05:36:33,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:36:34,340 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:36:34,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2024-11-09 05:36:34,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/data/91a443173/68edaf55a48c44bda40d7f11162fa31e/FLAGfe637716d [2024-11-09 05:36:34,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/data/91a443173/68edaf55a48c44bda40d7f11162fa31e [2024-11-09 05:36:34,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:36:34,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:36:34,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:36:34,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:36:34,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:36:34,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519f6d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34, skipping insertion in model container [2024-11-09 05:36:34,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:36:35,402 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2024-11-09 05:36:35,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:36:35,426 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:36:35,438 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-11-09 05:36:35,439 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1575] [2024-11-09 05:36:35,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1934] [2024-11-09 05:36:35,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2300] [2024-11-09 05:36:35,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2391] [2024-11-09 05:36:35,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2024-11-09 05:36:35,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2439] [2024-11-09 05:36:35,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2024-11-09 05:36:35,442 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3114] [2024-11-09 05:36:35,442 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3232] [2024-11-09 05:36:35,533 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2024-11-09 05:36:35,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:36:35,571 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:36:35,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35 WrapperNode [2024-11-09 05:36:35,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:36:35,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:36:35,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:36:35,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:36:35,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,712 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 848 [2024-11-09 05:36:35,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:36:35,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:36:35,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:36:35,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:36:35,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:36:35,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:36:35,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:36:35,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:36:35,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (1/1) ... [2024-11-09 05:36:35,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:36:35,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:35,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:36:35,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:36:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-09 05:36:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-09 05:36:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:36:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 05:36:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 05:36:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-09 05:36:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-09 05:36:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 05:36:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 05:36:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 05:36:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 05:36:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 05:36:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 05:36:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:36:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:36:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:36:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:36:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-09 05:36:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-09 05:36:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 05:36:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 05:36:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 05:36:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 05:36:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 05:36:35,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 05:36:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 05:36:35,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 05:36:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 05:36:35,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 05:36:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 05:36:35,926 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 05:36:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 05:36:35,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 05:36:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 05:36:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 05:36:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 05:36:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 05:36:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 05:36:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 05:36:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:36:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-09 05:36:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-09 05:36:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 05:36:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 05:36:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 05:36:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 05:36:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 05:36:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 05:36:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-09 05:36:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-09 05:36:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:36:35,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:36:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 05:36:35,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 05:36:36,084 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:36:36,086 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:36:37,584 INFO L? ?]: Removed 448 outVars from TransFormulas that were not future-live. [2024-11-09 05:36:37,586 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:36:38,633 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:36:38,633 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:36:38,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:36:38 BoogieIcfgContainer [2024-11-09 05:36:38,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:36:38,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:36:38,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:36:38,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:36:38,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:36:34" (1/3) ... [2024-11-09 05:36:38,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e517b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:36:38, skipping insertion in model container [2024-11-09 05:36:38,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:35" (2/3) ... [2024-11-09 05:36:38,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e517b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:36:38, skipping insertion in model container [2024-11-09 05:36:38,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:36:38" (3/3) ... [2024-11-09 05:36:38,646 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2024-11-09 05:36:38,665 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:36:38,665 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:36:38,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:36:38,772 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@162e0f13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:36:38,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:36:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 256 states have (on average 1.58984375) internal successors, (407), 277 states have internal predecessors, (407), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-09 05:36:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:36:38,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:38,813 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:38,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:38,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash 341966825, now seen corresponding path program 1 times [2024-11-09 05:36:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950447641] [2024-11-09 05:36:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:36:39,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:39,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950447641] [2024-11-09 05:36:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950447641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:36:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045715776] [2024-11-09 05:36:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:39,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:36:39,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:36:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:36:39,924 INFO L87 Difference]: Start difference. First operand has 381 states, 256 states have (on average 1.58984375) internal successors, (407), 277 states have internal predecessors, (407), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-09 05:36:40,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:40,342 INFO L93 Difference]: Finished difference Result 741 states and 1185 transitions. [2024-11-09 05:36:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:36:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 76 [2024-11-09 05:36:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:40,365 INFO L225 Difference]: With dead ends: 741 [2024-11-09 05:36:40,365 INFO L226 Difference]: Without dead ends: 380 [2024-11-09 05:36:40,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:36:40,380 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:40,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2219 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:36:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-09 05:36:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-09 05:36:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 257 states have (on average 1.5719844357976653) internal successors, (404), 276 states have internal predecessors, (404), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-09 05:36:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 595 transitions. [2024-11-09 05:36:40,492 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 595 transitions. Word has length 76 [2024-11-09 05:36:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:40,494 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 595 transitions. [2024-11-09 05:36:40,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-09 05:36:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 595 transitions. [2024-11-09 05:36:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 05:36:40,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:40,504 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:40,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:36:40,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:40,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash -395805501, now seen corresponding path program 1 times [2024-11-09 05:36:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:40,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762677849] [2024-11-09 05:36:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:36:41,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:41,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762677849] [2024-11-09 05:36:41,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762677849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:41,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:41,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 05:36:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995365605] [2024-11-09 05:36:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:41,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:36:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:41,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:36:41,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:36:41,225 INFO L87 Difference]: Start difference. First operand 380 states and 595 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 05:36:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:44,975 INFO L93 Difference]: Finished difference Result 1287 states and 2054 transitions. [2024-11-09 05:36:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 05:36:44,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 79 [2024-11-09 05:36:44,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:44,989 INFO L225 Difference]: With dead ends: 1287 [2024-11-09 05:36:44,990 INFO L226 Difference]: Without dead ends: 930 [2024-11-09 05:36:45,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:36:45,011 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 1485 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:45,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2478 Invalid, 4371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [521 Valid, 3850 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 05:36:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-09 05:36:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 874. [2024-11-09 05:36:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 614 states have (on average 1.5944625407166124) internal successors, (979), 645 states have internal predecessors, (979), 206 states have call successors, (206), 49 states have call predecessors, (206), 53 states have return successors, (213), 204 states have call predecessors, (213), 201 states have call successors, (213) [2024-11-09 05:36:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1398 transitions. [2024-11-09 05:36:45,110 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1398 transitions. Word has length 79 [2024-11-09 05:36:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:45,110 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1398 transitions. [2024-11-09 05:36:45,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 05:36:45,111 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1398 transitions. [2024-11-09 05:36:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 05:36:45,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:45,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:45,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:36:45,117 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:45,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash -26573250, now seen corresponding path program 1 times [2024-11-09 05:36:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386979338] [2024-11-09 05:36:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:36:45,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386979338] [2024-11-09 05:36:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386979338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:45,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:45,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:36:45,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96506772] [2024-11-09 05:36:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:45,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:36:45,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:36:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:45,643 INFO L87 Difference]: Start difference. First operand 874 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:36:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:45,940 INFO L93 Difference]: Finished difference Result 1419 states and 2274 transitions. [2024-11-09 05:36:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:36:45,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2024-11-09 05:36:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:45,958 INFO L225 Difference]: With dead ends: 1419 [2024-11-09 05:36:45,958 INFO L226 Difference]: Without dead ends: 905 [2024-11-09 05:36:45,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:45,963 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 0 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:45,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3325 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:36:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-09 05:36:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 895. [2024-11-09 05:36:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 629 states have (on average 1.5802861685214626) internal successors, (994), 660 states have internal predecessors, (994), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 210 states have call predecessors, (228), 201 states have call successors, (228) [2024-11-09 05:36:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1428 transitions. [2024-11-09 05:36:46,062 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1428 transitions. Word has length 84 [2024-11-09 05:36:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:46,064 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1428 transitions. [2024-11-09 05:36:46,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:36:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1428 transitions. [2024-11-09 05:36:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 05:36:46,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:46,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:46,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:36:46,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:46,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2145368158, now seen corresponding path program 1 times [2024-11-09 05:36:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826773568] [2024-11-09 05:36:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:36:47,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826773568] [2024-11-09 05:36:47,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826773568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:47,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:36:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035954393] [2024-11-09 05:36:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:47,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:36:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:36:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:47,605 INFO L87 Difference]: Start difference. First operand 895 states and 1428 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 05:36:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:51,809 INFO L93 Difference]: Finished difference Result 3667 states and 5943 transitions. [2024-11-09 05:36:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:36:51,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 84 [2024-11-09 05:36:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:51,833 INFO L225 Difference]: With dead ends: 3667 [2024-11-09 05:36:51,833 INFO L226 Difference]: Without dead ends: 2796 [2024-11-09 05:36:51,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:36:51,841 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 2164 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:51,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 1635 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 05:36:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2024-11-09 05:36:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2572. [2024-11-09 05:36:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 1842 states have (on average 1.5808903365906624) internal successors, (2912), 1933 states have internal predecessors, (2912), 566 states have call successors, (566), 129 states have call predecessors, (566), 163 states have return successors, (656), 570 states have call predecessors, (656), 561 states have call successors, (656) [2024-11-09 05:36:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 4134 transitions. [2024-11-09 05:36:52,178 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 4134 transitions. Word has length 84 [2024-11-09 05:36:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:52,180 INFO L471 AbstractCegarLoop]: Abstraction has 2572 states and 4134 transitions. [2024-11-09 05:36:52,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 05:36:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 4134 transitions. [2024-11-09 05:36:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 05:36:52,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:52,184 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:52,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:36:52,185 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:52,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1883340059, now seen corresponding path program 1 times [2024-11-09 05:36:52,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:52,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692462405] [2024-11-09 05:36:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:36:52,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:52,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692462405] [2024-11-09 05:36:52,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692462405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:52,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:52,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:36:52,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451169391] [2024-11-09 05:36:52,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:52,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:36:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:36:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:52,547 INFO L87 Difference]: Start difference. First operand 2572 states and 4134 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:36:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:53,014 INFO L93 Difference]: Finished difference Result 4223 states and 6777 transitions. [2024-11-09 05:36:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:36:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2024-11-09 05:36:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:53,035 INFO L225 Difference]: With dead ends: 4223 [2024-11-09 05:36:53,036 INFO L226 Difference]: Without dead ends: 2647 [2024-11-09 05:36:53,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:53,047 INFO L432 NwaCegarLoop]: 558 mSDtfsCounter, 0 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:53,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3319 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:36:53,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2024-11-09 05:36:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2591. [2024-11-09 05:36:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 1857 states have (on average 1.57619816908993) internal successors, (2927), 1941 states have internal predecessors, (2927), 566 states have call successors, (566), 129 states have call predecessors, (566), 167 states have return successors, (664), 581 states have call predecessors, (664), 561 states have call successors, (664) [2024-11-09 05:36:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 4157 transitions. [2024-11-09 05:36:53,389 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 4157 transitions. Word has length 83 [2024-11-09 05:36:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:53,390 INFO L471 AbstractCegarLoop]: Abstraction has 2591 states and 4157 transitions. [2024-11-09 05:36:53,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:36:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 4157 transitions. [2024-11-09 05:36:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 05:36:53,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:53,393 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:53,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:36:53,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:53,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1263626220, now seen corresponding path program 1 times [2024-11-09 05:36:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:53,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326191524] [2024-11-09 05:36:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:53,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:36:53,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326191524] [2024-11-09 05:36:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326191524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:53,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:53,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:36:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144371687] [2024-11-09 05:36:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:53,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:36:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:36:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:36:53,743 INFO L87 Difference]: Start difference. First operand 2591 states and 4157 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 8 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-09 05:36:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:56,465 INFO L93 Difference]: Finished difference Result 5889 states and 9508 transitions. [2024-11-09 05:36:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:36:56,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 8 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 90 [2024-11-09 05:36:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:56,494 INFO L225 Difference]: With dead ends: 5889 [2024-11-09 05:36:56,494 INFO L226 Difference]: Without dead ends: 3943 [2024-11-09 05:36:56,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:36:56,506 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 1736 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:56,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 1513 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 05:36:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-09 05:36:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3767. [2024-11-09 05:36:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 2653 states have (on average 1.5344892574444025) internal successors, (4071), 2786 states have internal predecessors, (4071), 850 states have call successors, (850), 211 states have call predecessors, (850), 263 states have return successors, (1018), 860 states have call predecessors, (1018), 845 states have call successors, (1018) [2024-11-09 05:36:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 5939 transitions. [2024-11-09 05:36:56,956 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 5939 transitions. Word has length 90 [2024-11-09 05:36:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:56,957 INFO L471 AbstractCegarLoop]: Abstraction has 3767 states and 5939 transitions. [2024-11-09 05:36:56,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 8 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-09 05:36:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 5939 transitions. [2024-11-09 05:36:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 05:36:56,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:56,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:56,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:36:56,960 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:56,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1568018839, now seen corresponding path program 1 times [2024-11-09 05:36:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:56,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190188514] [2024-11-09 05:36:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:36:57,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190188514] [2024-11-09 05:36:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190188514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:57,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:36:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266965463] [2024-11-09 05:36:57,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:57,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:36:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:36:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:36:57,432 INFO L87 Difference]: Start difference. First operand 3767 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 05:36:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:59,943 INFO L93 Difference]: Finished difference Result 7168 states and 11366 transitions. [2024-11-09 05:36:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:36:59,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 92 [2024-11-09 05:36:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:59,972 INFO L225 Difference]: With dead ends: 7168 [2024-11-09 05:36:59,973 INFO L226 Difference]: Without dead ends: 4273 [2024-11-09 05:36:59,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:36:59,990 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 998 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:59,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1608 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 05:36:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2024-11-09 05:37:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 3848. [2024-11-09 05:37:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 2707 states have (on average 1.528260066494274) internal successors, (4137), 2852 states have internal predecessors, (4137), 853 states have call successors, (853), 226 states have call predecessors, (853), 287 states have return successors, (1052), 860 states have call predecessors, (1052), 848 states have call successors, (1052) [2024-11-09 05:37:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 6042 transitions. [2024-11-09 05:37:00,466 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 6042 transitions. Word has length 92 [2024-11-09 05:37:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:00,467 INFO L471 AbstractCegarLoop]: Abstraction has 3848 states and 6042 transitions. [2024-11-09 05:37:00,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 05:37:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 6042 transitions. [2024-11-09 05:37:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 05:37:00,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:00,470 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:00,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:37:00,470 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:00,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1616014808, now seen corresponding path program 1 times [2024-11-09 05:37:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:00,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067680600] [2024-11-09 05:37:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:37:00,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067680600] [2024-11-09 05:37:00,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067680600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:00,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:00,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:37:00,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870008728] [2024-11-09 05:37:00,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:00,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:37:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:37:00,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:37:00,794 INFO L87 Difference]: Start difference. First operand 3848 states and 6042 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:37:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:01,689 INFO L93 Difference]: Finished difference Result 3952 states and 6204 transitions. [2024-11-09 05:37:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:37:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2024-11-09 05:37:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:01,717 INFO L225 Difference]: With dead ends: 3952 [2024-11-09 05:37:01,717 INFO L226 Difference]: Without dead ends: 3937 [2024-11-09 05:37:01,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:37:01,722 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 655 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:01,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1825 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:37:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2024-11-09 05:37:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3854. [2024-11-09 05:37:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 2713 states have (on average 1.5270917803169923) internal successors, (4143), 2858 states have internal predecessors, (4143), 853 states have call successors, (853), 226 states have call predecessors, (853), 287 states have return successors, (1052), 860 states have call predecessors, (1052), 848 states have call successors, (1052) [2024-11-09 05:37:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 6048 transitions. [2024-11-09 05:37:02,309 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 6048 transitions. Word has length 96 [2024-11-09 05:37:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:02,310 INFO L471 AbstractCegarLoop]: Abstraction has 3854 states and 6048 transitions. [2024-11-09 05:37:02,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:37:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 6048 transitions. [2024-11-09 05:37:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 05:37:02,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:02,313 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:02,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:37:02,314 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:02,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash -411802111, now seen corresponding path program 1 times [2024-11-09 05:37:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:02,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077380504] [2024-11-09 05:37:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:37:02,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077380504] [2024-11-09 05:37:02,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077380504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:02,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:02,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 05:37:02,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36115462] [2024-11-09 05:37:02,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:02,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:37:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:37:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:37:02,691 INFO L87 Difference]: Start difference. First operand 3854 states and 6048 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 05:37:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:03,533 INFO L93 Difference]: Finished difference Result 7331 states and 11669 transitions. [2024-11-09 05:37:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:37:03,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 102 [2024-11-09 05:37:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:03,565 INFO L225 Difference]: With dead ends: 7331 [2024-11-09 05:37:03,565 INFO L226 Difference]: Without dead ends: 4126 [2024-11-09 05:37:03,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:37:03,585 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 318 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:03,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 4077 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:37:03,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2024-11-09 05:37:04,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4070. [2024-11-09 05:37:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4070 states, 2909 states have (on average 1.5032657270539704) internal successors, (4373), 3064 states have internal predecessors, (4373), 858 states have call successors, (858), 231 states have call predecessors, (858), 302 states have return successors, (1069), 865 states have call predecessors, (1069), 853 states have call successors, (1069) [2024-11-09 05:37:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 6300 transitions. [2024-11-09 05:37:04,106 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 6300 transitions. Word has length 102 [2024-11-09 05:37:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:04,110 INFO L471 AbstractCegarLoop]: Abstraction has 4070 states and 6300 transitions. [2024-11-09 05:37:04,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 05:37:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 6300 transitions. [2024-11-09 05:37:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 05:37:04,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:04,114 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:04,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:37:04,114 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:04,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 625558603, now seen corresponding path program 1 times [2024-11-09 05:37:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952593659] [2024-11-09 05:37:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 05:37:04,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:04,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952593659] [2024-11-09 05:37:04,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952593659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:04,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:04,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:37:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614312341] [2024-11-09 05:37:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:04,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:37:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:37:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:37:04,816 INFO L87 Difference]: Start difference. First operand 4070 states and 6300 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-09 05:37:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:09,017 INFO L93 Difference]: Finished difference Result 14829 states and 23326 transitions. [2024-11-09 05:37:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:37:09,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 109 [2024-11-09 05:37:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:09,077 INFO L225 Difference]: With dead ends: 14829 [2024-11-09 05:37:09,077 INFO L226 Difference]: Without dead ends: 10782 [2024-11-09 05:37:09,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:37:09,098 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 1606 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:09,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 1973 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 05:37:09,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10782 states. [2024-11-09 05:37:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10782 to 9529. [2024-11-09 05:37:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9529 states, 6763 states have (on average 1.5136773621174036) internal successors, (10237), 7152 states have internal predecessors, (10237), 2113 states have call successors, (2113), 497 states have call predecessors, (2113), 652 states have return successors, (2576), 2016 states have call predecessors, (2576), 2108 states have call successors, (2576) [2024-11-09 05:37:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9529 states to 9529 states and 14926 transitions. [2024-11-09 05:37:10,418 INFO L78 Accepts]: Start accepts. Automaton has 9529 states and 14926 transitions. Word has length 109 [2024-11-09 05:37:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:10,418 INFO L471 AbstractCegarLoop]: Abstraction has 9529 states and 14926 transitions. [2024-11-09 05:37:10,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-09 05:37:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 9529 states and 14926 transitions. [2024-11-09 05:37:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 05:37:10,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:10,422 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:10,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:37:10,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:10,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1068917295, now seen corresponding path program 1 times [2024-11-09 05:37:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:10,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479077226] [2024-11-09 05:37:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:10,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:37:12,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:12,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479077226] [2024-11-09 05:37:12,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479077226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222620573] [2024-11-09 05:37:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:12,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:12,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:12,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:37:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:13,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:37:13,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:37:13,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:37:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222620573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:37:13,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [20] total 22 [2024-11-09 05:37:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308558842] [2024-11-09 05:37:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:13,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:37:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:13,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:37:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:37:13,480 INFO L87 Difference]: Start difference. First operand 9529 states and 14926 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-09 05:37:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:14,438 INFO L93 Difference]: Finished difference Result 9566 states and 14977 transitions. [2024-11-09 05:37:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:37:14,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 110 [2024-11-09 05:37:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:14,490 INFO L225 Difference]: With dead ends: 9566 [2024-11-09 05:37:14,490 INFO L226 Difference]: Without dead ends: 9551 [2024-11-09 05:37:14,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:37:14,497 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 0 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:14,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1655 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:37:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9551 states. [2024-11-09 05:37:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9551 to 9551. [2024-11-09 05:37:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9551 states, 6785 states have (on average 1.511864406779661) internal successors, (10258), 7174 states have internal predecessors, (10258), 2113 states have call successors, (2113), 497 states have call predecessors, (2113), 652 states have return successors, (2576), 2016 states have call predecessors, (2576), 2108 states have call successors, (2576) [2024-11-09 05:37:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9551 states to 9551 states and 14947 transitions. [2024-11-09 05:37:15,363 INFO L78 Accepts]: Start accepts. Automaton has 9551 states and 14947 transitions. Word has length 110 [2024-11-09 05:37:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:15,364 INFO L471 AbstractCegarLoop]: Abstraction has 9551 states and 14947 transitions. [2024-11-09 05:37:15,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-09 05:37:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9551 states and 14947 transitions. [2024-11-09 05:37:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 05:37:15,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:15,370 INFO L215 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:15,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:37:15,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:37:15,571 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:15,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1263742365, now seen corresponding path program 1 times [2024-11-09 05:37:15,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:15,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600105418] [2024-11-09 05:37:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:15,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:37:17,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:17,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600105418] [2024-11-09 05:37:17,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600105418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:17,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501956979] [2024-11-09 05:37:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:17,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:17,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:17,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:17,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:37:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:18,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 05:37:18,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:37:18,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:37:30,181 WARN L286 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 2228 DAG size of output: 10 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:39:38,183 WARN L286 SmtUtils]: Spent 2.13m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:41:46,330 WARN L286 SmtUtils]: Spent 2.13m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:41:54,203 WARN L286 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 2228 DAG size of output: 10 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:41:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:41:54,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501956979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:41:54,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35784682] [2024-11-09 05:41:54,289 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2024-11-09 05:41:54,289 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:41:54,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:41:54,301 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:41:54,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:10,970 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 580 for LOIs [2024-11-09 05:42:31,682 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2024-11-09 05:42:44,557 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 441 for LOIs [2024-11-09 05:42:45,122 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 36 for LOIs [2024-11-09 05:42:45,142 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 437 for LOIs [2024-11-09 05:42:45,435 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 587 for LOIs [2024-11-09 05:42:57,458 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 463 for LOIs [2024-11-09 05:42:57,810 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 550 for LOIs [2024-11-09 05:43:08,177 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 642 for LOIs [2024-11-09 05:43:11,995 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 519 for LOIs [2024-11-09 05:43:13,695 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:43:19,044 WARN L286 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:24,775 WARN L286 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:32,390 WARN L286 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 587 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:40,021 WARN L286 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 519 DAG size of output: 516 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:51,419 WARN L286 SmtUtils]: Spent 10.04s on a formula simplification. DAG size of input: 553 DAG size of output: 523 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:59,442 WARN L286 SmtUtils]: Spent 7.64s on a formula simplification that was a NOOP. DAG size: 589 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:07,362 WARN L286 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 589 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:29,976 WARN L286 SmtUtils]: Spent 20.11s on a formula simplification. DAG size of input: 642 DAG size of output: 602 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:35,486 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 515 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:07,821 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:13,981 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:20,096 WARN L286 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:26,684 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 587 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:32,548 WARN L286 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:46,847 WARN L286 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:53,060 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:59,505 WARN L286 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:46:06,325 WARN L286 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:46:13,387 WARN L286 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:25,832 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 505 DAG size of output: 488 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [35784682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:25,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:47:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [20, 13, 12] total 82 [2024-11-09 05:47:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760341959] [2024-11-09 05:47:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:25,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-09 05:47:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:47:25,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-09 05:47:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=6085, Unknown=0, NotChecked=0, Total=6642 [2024-11-09 05:47:25,841 INFO L87 Difference]: Start difference. First operand 9551 states and 14947 transitions. Second operand has 45 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 13 states have call successors, (24), 10 states have call predecessors, (24), 8 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-09 05:47:34,009 WARN L286 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 596 DAG size of output: 589 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:41,959 WARN L286 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 603 DAG size of output: 591 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:49,719 WARN L286 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 639 DAG size of output: 591 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:56,268 WARN L286 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 596 DAG size of output: 552 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:02,196 WARN L286 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 603 DAG size of output: 554 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:08,641 WARN L286 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 602 DAG size of output: 554 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:24,119 WARN L286 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 589 DAG size of output: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:30,521 WARN L286 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 592 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:36,911 WARN L286 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 598 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:42,857 WARN L286 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 606 DAG size of output: 594 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:48,583 WARN L286 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 591 DAG size of output: 585 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:54,614 WARN L286 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 596 DAG size of output: 590 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:00,384 WARN L286 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 591 DAG size of output: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:06,136 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 593 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:11,936 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 595 DAG size of output: 588 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:17,797 WARN L286 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 593 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:23,646 WARN L286 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 593 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:30,051 WARN L286 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 593 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:36,058 WARN L286 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 593 DAG size of output: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:50:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:12,240 INFO L93 Difference]: Finished difference Result 19197 states and 30061 transitions. [2024-11-09 05:50:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 05:50:12,241 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 13 states have call successors, (24), 10 states have call predecessors, (24), 8 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) Word has length 134 [2024-11-09 05:50:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:12,305 INFO L225 Difference]: With dead ends: 19197 [2024-11-09 05:50:12,305 INFO L226 Difference]: Without dead ends: 9666 [2024-11-09 05:50:12,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3100 ImplicationChecksByTransitivity, 378.8s TimeCoverageRelationStatistics Valid=1003, Invalid=9503, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 05:50:12,349 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 329 mSDsluCounter, 5192 mSDsCounter, 0 mSdLazyCounter, 8209 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 5692 SdHoareTripleChecker+Invalid, 8295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 8209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:12,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 5692 Invalid, 8295 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [86 Valid, 8209 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2024-11-09 05:50:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2024-11-09 05:50:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 9585. [2024-11-09 05:50:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 6809 states have (on average 1.5102070788662065) internal successors, (10283), 7199 states have internal predecessors, (10283), 2117 states have call successors, (2117), 503 states have call predecessors, (2117), 658 states have return successors, (2581), 2019 states have call predecessors, (2581), 2112 states have call successors, (2581) [2024-11-09 05:50:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 14981 transitions. [2024-11-09 05:50:13,708 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 14981 transitions. Word has length 134 [2024-11-09 05:50:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:13,709 INFO L471 AbstractCegarLoop]: Abstraction has 9585 states and 14981 transitions. [2024-11-09 05:50:13,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 13 states have call successors, (24), 10 states have call predecessors, (24), 8 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-09 05:50:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 14981 transitions. [2024-11-09 05:50:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 05:50:13,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:13,714 INFO L215 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:13,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:50:13,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783a4b40-d77a-41a3-ac0f-38f823dc6724/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:13,920 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:13,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:13,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1307726218, now seen corresponding path program 1 times [2024-11-09 05:50:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:13,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951210114] [2024-11-09 05:50:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:13,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat